Grain size, bulk density, and organic carbon of sediment cores from San Pablo Bay and Grizzly Bay, California, 2019

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What does this data set describe?

Title:
Grain size, bulk density, and organic carbon of sediment cores from San Pablo Bay and Grizzly Bay, California, 2019
Abstract:
Bed sediment samples were collected in San Pablo Bay and Grizzly Bays on eight days from June through November 2019, to analyze for sediment properties including bulk density, particle size distribution, and percent organic carbon. Sediment samples were collected from a small vessel near pre-established USGS instrument moorings using a Gomex box corer that was subsampled with three push cores (37 mm in diameter) per Gomex core. Six subsamples were collected from the top 5 centimeters (cm) of each push core, a few push cores included the top 8 cm. The top two subsamples were each 0.5 cm thick, and all following subsamples were each 1 cm thick. Push core samples from the first, third, and fifth centimeter depth were analyzed for grain size and percent organic carbon, while all 6 sections were analyzed for bulk density. Data are provided in a comma-delimited values spreadsheet. These data were collected as part of a collaborative project with the USGS California Water Science Center and the USGS Water Mission Area on physical and biological controls on sediment erodibility, funded by the USGS Priority Ecosystems Program for San Francisco Bay and Delta and the USGS Coastal Marine Hazards and Resources Program.
Supplemental_Information:
Information about the data collection field activities can be found at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-625-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-668-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    WinklerPrins, Lukas, and Tan, Angela C., 20201231, Grain size, bulk density, and organic carbon of sediment cores from San Pablo Bay and Grizzly Bay, California, 2019: data release doi:10.5066/P9P7I65U, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Lacy, Jessica R., McGill, Samantha C., Joanne C. T. Ferreira, Allen, Rachel M., WinklerPrins, Lukas, and Tan, Angela C., 20201030, Hydrodynamic and sediment transport data from San Pablo Bay and Grizzly Bay , California, 2019: data release doi:10.5066/P9P7I65U, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -122.39110
    East_Bounding_Coordinate: -121.04072
    North_Bounding_Coordinate: 38.11671
    South_Bounding_Coordinate: 38.08336
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/5f497ad982ce4c3d122bbb15?name=ERO19_study_area.jpg &allowOpen=true (JPEG)
    Digital elevation model (DEM) of study area showing locations of USGS moorings in San Pablo Bay (PBM) and Grizzly Bay (GBM).
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 12-Jun-2019
    Ending_Date: 25-Nov-2019
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: Comma-separated values
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      Data were collected in San Pablo Bay and Grizzly Bay , California
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (607)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 1.0E-5. Longitudes are given to the nearest 1.0E-5. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is World Geodetic System 1984 (WGS84).
      The ellipsoid used is WGS84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    ERO19_GS-BD-C.csv
    Table containing attribute information associated with the dataset (Source: Producer defined)
    FAN ID
    Unique U.S. Geological Survey field activity number (FAN). "NA" indicates that no value was assigned. (Source: Producer defined) Unique U.S. Geological Survey field activity number (FAN).
    Bag ID
    Sample bag identifier (Source: Producer defined) Sequentially numbered unique identifier for sample bags; assigned in the lab.
    Sample ID
    Sample identifier (Source: Producer defined) Unique identifier for samples; assigned in the field.
    Lab ID
    Sample identifier for sediment lab in YY-FFFFF-XX format, where YY is the 2-digit year (for example 19=2019), FFFFF is the 5-digit field-activity-number (FAN) ID code, and XX is a sequential number given to the sample in the lab. "NA" indicates that no value was assigned. (Source: Producer defined) Unique identifier for samples; assigned in the sediment lab.
    Date Collected
    Date in month/day/year format of sample collection. (Source: Producer defined)
    Range of values
    Minimum:06/12/2019
    Maximum:11/25/2019
    Units:Date in month/day/year format
    Time (PDT)
    Time of sample collection, in hours:minutes:seconds format, Pacific Daylight Time (PDT), (Source: Producer defined)
    Range of values
    Minimum:00:00:00
    Maximum:23:59:59
    Units:hours:minutes:seconds format, Pacific Daylight Time (PDT)
    Site
    Code identifying sampling locations. (Source: Producer defined)
    ValueDefinition
    GBMGrizzly Bay mooring
    PBMGrizzly Bay mooring
    SPB1San Pablo Bay 1
    GB1Grizzly Bay 1
    Latitude
    Latitude of sample location in decimal degrees, north. (Source: Producer defined)
    Range of values
    Minimum:38.08336
    Maximum:38.11671
    Units:Decimal degrees
    Longitude
    Longitude of sample location in decimal degrees, east. (Source: Producer defined)
    Range of values
    Minimum:-122.39110
    Maximum:-122.04072
    Units:Decimal degrees
    Core Depth
    The midpoint of the depth into the sediment bed of the sample . (Source: Producer defined)
    Range of values
    Minimum:0.25
    Maximum:7.5
    Units:centimeters
    Processing Notes
    Relevant information regarding the sample during its processing (Source: Producer defined) Unique note of relevant information regarding sample
    Wt. percent in -4.00 phi bin or 16 mm bin
    Weight percent of sample with grain diameter greater than -4.00 phi, or 16 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -3.75 phi bin or 13.5 mm bin
    Weight percent of sample with grain diameter between -4.00 and -3.75 phi, or 13.5 and 16 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -3.50 phi bin or 11.2 mm bin
    Weight percent of sample with grain diameter between -3.75 and -3.50 phi, or 11.2 and 13.5 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -3.25 phi bin or 9.51 mm bin
    Weight percent of sample with grain diameter between -3.50 and -3.25 phi, or 9.51 and 11.2 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -3.00 phi bin or 8 mm bin
    Weight percent of sample with grain diameter between -3.25 and -3.00 phi, or 8 and 9.51 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -2.75 phi bin or 6.73 mm bin
    Weight percent of sample with grain diameter between -3.00 and -2.75 phi, or 6.73 and 8 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -2.50 phi bin or 5.66 mm bin
    Weight percent of sample with grain diameter between -2.75 and -2.50 phi, or 5.66 and 6.73 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -2.25 phi bin or 4.76 mm bin
    Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -2.00 phi bin or 4 mm bin
    Weight percent of sample with grain diameter between -2.25 and -2.00 phi, or 4 and 4.76 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -1.75 phi bin or 3.36 mm bin
    Weight percent of sample with grain diameter between -2.00 and -1.75 phi, or 3.36 and 4 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -1.50 phi bin or 2.83 mm bin
    Weight percent of sample with grain diameter between -1.75 and -1.50 phi, or 2.83 and 3.36 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -1.25 phi bin or 2.38 mm bin
    Weight percent of sample with grain diameter between -1.50 and -1.25 phi, or 2.38 and 2.83 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -1.00 phi bin or 2 mm bin
    Weight percent of sample with grain diameter between -1.25 and -1.00 phi, or 2 and 2.38 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -0.75 phi bin or 1.68 mm bin
    Weight percent of sample with grain diameter between -1.00 and -0.75 phi, or 1.68 and 2 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:percentage
    Wt. percent in -0.50 phi bin or 1.41 mm bin
    Weight percent of sample with grain diameter between -0.75 and -0.50 phi, or 1.41 and 1.68 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.00089
    Units:percentage
    Wt. percent in -0.25 phi bin or 1.19 mm bin
    Weight percent of sample with grain diameter between -0.50 and -0.25 phi, or 1.19 and 1.41 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.025622
    Units:percentage
    Wt. percent in 0.00 phi bin or 1 mm bin
    Weight percent of sample with grain diameter between -0.25 and 0.00 phi, or 1 and 1.19 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.097072
    Units:percentage
    Wt. percent in 0.25 phi bin or 0.8409 mm bin
    Weight percent of sample with grain diameter between 0.00 and 0.25 phi, or 0.8409 and 1 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.133713
    Units:percentage
    Wt. percent in 0.50 phi bin or 0.7071 mm bin
    Weight percent of sample with grain diameter between 0.25 and 0.50 phi, or 0.7071 and 0.8409 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.109178
    Units:percentage
    Wt. percent in 0.75 phi bin or 0.5946 mm bin
    Weight percent of sample with grain diameter between 0.50 and 0.75 phi, or 0.5946 and 0.7071 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.161366
    Units:percentage
    Wt. percent in 1.00 phi bin or 0.5 mm bin
    Weight percent of sample with grain diameter between 0.75 and 1.00 phi, or 0.5 and 0.5946 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.191249
    Units:percentage
    Wt. percent in 1.25 phi bin or 0.4204 mm bin
    Weight percent of sample with grain diameter between 1.00 and 1.25 phi, or 0.4204 and 0.5 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.125507
    Units:percentage
    Wt. percent in 1.50 phi bin or 0.3536 mm bin
    Weight percent of sample with grain diameter between 1.25 and 1.50 phi, or 0.3536 and 0.4204 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.133006
    Units:percentage
    Wt. percent in 1.75 phi bin or 0.2973 mm bin
    Weight percent of sample with grain diameter between 1.50 and 1.75 phi, or 0.2973 and 0.3536 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.048757
    Units:percentage
    Wt. percent in 2.00 phi bin or 0.25 mm bin
    Weight percent of sample with grain diameter between 1.75 and 2.00 phi, or 0.25 and 0.2973 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.146529
    Units:percentage
    Wt. percent in 2.25 phi bin or 0.2102 mm bin
    Weight percent of sample with grain diameter between 2.00 and 2.25 phi, or 0.2102 and 0.25 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.420049
    Units:percentage
    Wt. percent in 2.50 phi bin or 0.1768 mm bin
    Weight percent of sample with grain diameter between 2.25 and 2.50 phi, or 0.1768 and 0.2102 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.649953
    Units:percentage
    Wt. percent in 2.75 phi bin or 0.1487 mm bin
    Weight percent of sample with grain diameter between 2.50 and 2.75 phi, or 0.1487 and 0.1768 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.809941
    Units:percentage
    Wt. percent in 3.00 phi bin or 0.125 mm bin
    Weight percent of sample with grain diameter between 2.75 and 3.00 phi, or 0.125 and 0.1487 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0.78968
    Units:percentage
    Wt. percent in 3.25 phi bin or 0.1051 mm bin
    Weight percent of sample with grain diameter between 3.00 and 3.25 phi, or 0.1051 and 0.125 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:1.320742
    Units:percentage
    Wt. percent in 3.50 phi bin or 0.08839 mm bin
    Weight percent of sample with grain diameter between 3.25 and 3.50 phi, or 0.08839 and 0.1051 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.00068
    Maximum:2.328851
    Units:percentage
    Wt. percent in 3.75 phi bin or 0.07433 mm bin
    Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.07433 and 0.08839 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.041999
    Maximum:3.506402
    Units:percentage
    Wt. percent in 4.00 phi bin or 0.0625 mm bin
    Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.07433 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.199992
    Maximum:4.403353
    Units:percentage
    Wt. percent in 4.25 phi bin or 0.052556 mm bin
    Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.239991
    Maximum:4.900079
    Units:percentage
    Wt. percent in 4.50 phi bin or 0.044194 mm bin
    Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.499981
    Maximum:6.790753
    Units:percentage
    Wt. percent in 4.75 phi bin or 0.037163 mm bin
    Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.149955
    Maximum:9.211021
    Units:percentage
    Wt. percent in 5.00 phi bin or 0.03125 mm bin
    Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.009922
    Maximum:9.531057
    Units:percentage
    Wt. percent in 5.25 phi bin or 0.02628 mm bin
    Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.02628 and 0.03125 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.490219
    Maximum:7.920878
    Units:percentage
    Wt. percent in 5.50 phi bin or 0.0221 mm bin
    Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.0221 and 0.02628 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.62023
    Maximum:6.020055
    Units:percentage
    Wt. percent in 5.75 phi bin or 0.01858 mm bin
    Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.01858 and 0.0221 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.750242
    Maximum:5.650259
    Units:percentage
    Wt. percent in 6.00 phi bin or 0.01563 mm bin
    Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.01563 and 0.01858 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.130275
    Maximum:5.569871
    Units:percentage
    Wt. percent in 6.25 phi bin or 0.01314 mm bin
    Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.01314 and 0.01563 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.375021
    Maximum:5.63987
    Units:percentage
    Wt. percent in 6.50 phi bin or 0.01105 mm bin
    Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.01105 and 0.01314 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.410378
    Maximum:5.95976
    Units:percentage
    Wt. percent in 6.75 phi bin or 0.00929 mm bin
    Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.00929 and 0.01105 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.350371
    Maximum:6.129762
    Units:percentage
    Wt. percent in 7.00 phi bin or 0.00781 mm bin
    Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.00781 and 0.00929 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.260361
    Maximum:6.039766
    Units:percentage
    Wt. percent in 7.25 phi bin or 0.00657 mm bin
    Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.00781 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.140348
    Maximum:5.799775
    Units:percentage
    Wt. percent in 7.50 phi bin or 0.00552 mm bin
    Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.00552 and 0.00657 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.040337
    Maximum:5.650497
    Units:percentage
    Wt. percent in 7.75 phi bin or 0.00465 mm bin
    Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.00465 and 0.00552 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.830314
    Maximum:5.500484
    Units:percentage
    Wt. percent in 8.00 phi bin or 0.00391 mm bin
    Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.00391 and 0.00465 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.680297
    Maximum:5.390474
    Units:percentage
    Wt. percent in 8.25 phi bin or 0.00329 mm bin
    Weight percent of sample with grain diameter between 8.00 and 8.25 phi, or 0.00329 and 0.00391 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.510278
    Maximum:5.150453
    Units:percentage
    Wt. percent in 8.50 phi bin or 0.00276 mm bin
    Weight percent of sample with grain diameter between 8.25 and 8.50 phi, or 0.00276 and 0.00329 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.280253
    Maximum:4.710414
    Units:percentage
    Wt. percent in 8.75 phi bin or 0.00232 mm bin
    Weight percent of sample with grain diameter between 8.50 and 8.75 phi, or 0.00232 and 0.00276 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.130236
    Maximum:4.370384
    Units:percentage
    Wt. percent in 9.00 phi bin or 0.00195 mm bin
    Weight percent of sample with grain diameter between 8.75 and 9.00 phi, or 0.00195 and 0.00232 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.000222
    Maximum:4.050356
    Units:percentage
    Wt. percent in 9.25 phi bin or 0.00164 mm bin
    Weight percent of sample with grain diameter between 9.00 and 9.25 phi, or 0.00164 and 0.00195 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.89021
    Maximum:3.740329
    Units:percentage
    Wt. percent in 9.50 phi bin or 0.00138 mm bin
    Weight percent of sample with grain diameter between 9.25 and 9.50 phi, or 0.00138 and 0.00164 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.810201
    Maximum:3.490307
    Units:percentage
    Wt. percent in 9.75 phi bin or 0.00116 mm bin
    Weight percent of sample with grain diameter between 9.50 and 9.75 phi, or 0.00116 and 0.00138 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.740191
    Maximum:3.310291
    Units:percentage
    Wt. percent in 9.99 phi bin or 0.00098 mm bin
    Weight percent of sample with grain diameter between 9.75 and 9.99 phi, or 0.00098 and 0.00116 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.590176
    Maximum:2.990263
    Units:percentage
    Wt. percent in 10.25 phi bin or 0.00082 mm bin
    Weight percent of sample with grain diameter between 9.99 and 10.25 phi, or 0.00082 and 0.00098 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.53017
    Maximum:2.881772
    Units:percentage
    Wt. percent in 10.50 phi bin or 0.00069 mm bin
    Weight percent of sample with grain diameter between 10.25 and 10.50 phi, or 0.00069 and 0.00082 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.270141
    Maximum:2.465846
    Units:percentage
    Wt. percent in 10.75 phi bin or 0.00058 mm bin
    Weight percent of sample with grain diameter between 10.50 and 10.75 phi, or 0.00058 and 0.00069 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.030114
    Maximum:2.030114
    Units:percentage
    Wt. percent in 10.99 phi bin or 0.00049 mm bin
    Weight percent of sample with grain diameter between 10.75 and 10.99 phi, or 0.00049 and 0.00058 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.710079
    Maximum:1.426031
    Units:percentage
    Wt. percent in 11.25 phi bin or 0.0004 mm bin
    Weight percent of sample with grain diameter between 10.99 and 11.25 phi, or 0.0004 and 0.00049 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.400044
    Maximum:0.812046
    Units:percentage
    Wt. percent in 11.48 phi bin or 0.00035 mm bin
    Weight percent of sample with grain diameter between 11.25 and 11.48 phi, or 0.00035 and 0.0004 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.09401
    Maximum:0.189999
    Units:percentage
    Wt. percent in 12.02 phi bin or 0.000241 mm bin
    Weight percent of sample with grain diameter between 11.50 and 12.02 phi, or 0.000241 and 0.00035 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in 13.02 phi bin or 0.00012 mm bin
    Weight percent of sample with grain diameter between 12.02 and 13.02 phi, or 0.00012 and 0.000241 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Percent Gravel
    Percent of sample greater than 2 mm, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:Percentage
    Percent Sand
    Percent of sample less than 2 mm and greater than 63 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.38150
    Maximum:13.18545
    Units:Percentage
    Percent Silt
    Percent of sample less than 63 microns and greater than 4 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:57.45505
    Maximum:76.01843
    Units:Percentage
    Percent Clay
    Percent of sample less than 4 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:20.98633
    Maximum:41.25363
    Units:Percentage
    Percent Mud
    Percent of sample less than 63 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:86.81455
    Maximum:99.61850
    Units:Percentage
    Gravel to Sand Ratio
    ratio of percent gravel in sample to percent sand. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:no unit
    Sand to Silt Ratio
    ratio of percent sand in sample to percent silt. (Source: producer defined)
    Range of values
    Minimum:0.00600
    Maximum:0.21600
    Units:no unit
    Silt to Clay Ratio
    ratio of percent silt in sample to percent clay. (Source: producer defined)
    Range of values
    Minimum:1.39300
    Maximum:3.62200
    Units:no unit
    Sand to Clay Ratio
    ratio of percent sand in sample to percent clay. (Source: producer defined)
    Range of values
    Minimum:0.01200
    Maximum:0.51400
    Units:no unit
    Sand to Mud Ratio
    ratio of percent sand in sample to percent mud. (Source: producer defined)
    Range of values
    Minimum:0.00400
    Maximum:0.15200
    Units:no unit
    Gravel to Mud Ratio
    ratio of percent gravel in sample to percent mud. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:no unit
    D5 Phi
    Phi size at D5 for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.47900
    Maximum:5.01500
    Units:Phi size
    D10 Phi
    Phi size at D10 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:3.82600
    Maximum:5.43800
    Units:Phi size
    D16 Phi
    Phi size at D16 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:4.15000
    Maximum:5.87000
    Units:Phi size
    D25 Phi
    Phi size at D25 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:4.59300
    Maximum:6.44100
    Units:Phi size
    D50 Phi
    Phi size at D50 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:5.74200
    Maximum:7.60000
    Units:Phi size
    D75 Phi
    Phi size at D75 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:7.63200
    Maximum:8.87700
    Units:Phi size
    D84 Phi
    Phi size at D84 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:8.52400
    Maximum:9.48800
    Units:Phi size
    D90 Phi
    Phi size at D90 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:9.27600
    Maximum:9.97900
    Units:Phi size
    D95 Phi
    Phi size at D95 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:10.00100
    Maximum:10.44600
    Units:Phi size
    D5 mm
    mm size at D5 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.00070
    Maximum:0.00100
    Units:millimeters
    D10 mm
    mm size at D10 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.00100
    Maximum:0.00160
    Units:millimeters
    D16 mm
    mm size at D16 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.00140
    Maximum:0.00270
    Units:millimeters
    D25 mm
    mm size at D25 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.00210
    Maximum:0.00500
    Units:millimeters
    D50 mm
    mm size at D50 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.00520
    Maximum:0.01870
    Units:millimeters
    D75 mm
    mm size at D75 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.01150
    Maximum:0.04140
    Units:millimeters
    D84 mm
    mm size at D84 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.01710
    Maximum:0.05630
    Units:millimeters
    D90 mm
    mm size at D90 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.02310
    Maximum:0.07050
    Units:millimeters
    D95 mm
    mm size at D95 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.03090
    Maximum:0.08970
    Units:millimeters
    F-W Median
    Phi size median for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:5.74183
    Maximum:7.599702
    Units:Phi size
    F-W Mean
    Phi size mean for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:6.282356
    Maximum:7.650653
    Units:Phi size
    F-W Sorting
    sorting for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.689219
    Maximum:2.201538
    Units:Phi size
    F-W Skewness
    skewness for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.010524
    Maximum:0.436839
    Units:Phi size
    F-W Kurtosis
    Kurtosis for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.793878
    Maximum:0.943448
    Units:Phi size
    Inman Median
    Phi size median for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:5.74183
    Maximum:7.599702
    Units:Phi size
    Inman Mean
    Phi size mean for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:6.489514
    Maximum:7.676129
    Units:Phi size
    Inman Sorting
    sorting for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.758329
    Maximum:2.372108
    Units:Phi size
    Inman Skew 16-84
    skewness for sample (D16-D84) by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.016144
    Maximum:0.411275
    Units:Phi size
    Inman Skew 05-95
    skewness for sample (D5-D95) by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.006928
    Maximum:0.683074
    Units:Phi size
    Inman Kurtosis
    Kurtosis for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.396682
    Maximum:0.600657
    Units:Phi size
    Trask Median
    mm size median for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.005155
    Maximum:0.018687
    Units:millimeters
    Trask Mean
    mm size mean for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.006819
    Maximum:0.022595
    Units:millimeters
    Trask Sorting
    sorting for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.29888
    Maximum:3.317257
    Units:millimeters
    Trask Skewness
    skewness for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.511808
    Maximum:1.00911
    Units:millimeters
    Trask Kurtosis
    kurtosis for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.196735
    Maximum:0.332382
    Units:millimeters
    Mean Phi
    phi size mean for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:6.314059
    Maximum:7.619815
    Units:Phi size
    Mean mm
    mm size mean for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.005084
    Maximum:0.012568
    Units:millimeters
    Variance Phi
    variance for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.715325
    Maximum:4.64159
    Units:Phi size
    Std. Dev. Phi
    standard deviation for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.647824
    Maximum:2.154435
    Units:Phi size
    Skewness Phi
    skewness for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-0.15883
    Maximum:0.71669
    Units:Phi size
    Kurtosis Phi
    kurtosis for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.044506
    Maximum:2.693647
    Units:Phi size
    Bag Weight
    The weight of the empty sample bag. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.193
    Maximum:4.427
    Units:grams
    Bag and Wet Sediment Weight
    The weight of the initial wet sample, as it was collected in the sample bag. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:8.1851
    Maximum:22.457
    Units:grams
    Bag and Dry Sediment Weight
    The weight of the dry sample including the weight of its sample bag. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:4.783
    Maximum:12.614
    Units:grams
    Dry Sediment Weight
    The weight of the dried sediment in the sample. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.541
    Maximum:9.349
    Units:grams
    Water Weight
    The weight of the water from the sample. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.013
    Maximum:10.69
    Units:grams
    Bulk Density
    The bulk density of the sample, calculated as the mass of the dry sediment divided by the volume of the initial sample. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.209983
    Maximum:1.513086
    Units:grams per cubic centimeter
    Percent Total Carbon
    Total weight percentage of organic carbon for sample. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.751
    Maximum:8.33
    Units:percentage
    Percent Total Organic Carbon
    Total weight percentage of total carbon for sample. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.72836
    Maximum:3.093
    Units:percentage
    Percent Total Inorganic Carbon
    Total weight percentage of inorganic carbon for sample. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:5.238
    Units:percentage
    Percent Calcium Carbonate
    Total weight percentage of calcium carbonate (CaCO3) for sample. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:43.645
    Units:grams per cubic centimeter

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Lukas WinklerPrins
    • Angela C. Tan
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-460-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

These data were collected to investigate temporal variability in physical properties of the sediment bed that may influence erodibility. They were collected as part of a collaborative study with the USGS California Water Science Center and the USGS Water Resource Mission Area investigating physical and biological controls on bed erodibility. These data are intended for researchers, students, policy makers, and the general public.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 03-Feb-2020 (process 1 of 3)
    Wet samples weights were measured, then samples were placed in a 60 degrees C oven until fully dried. Once samples were fully dried, they were placed in a desiccator for an hour, then dry weights were measured. Samples were then placed back in the oven for another 4 hours at 60 degrees C, moved to the desiccator for 1 hour, and reweighed. Samples were considered dry when their weights were equal to or less than 0.004g of their previously recorded dry weight. The bulk density reported here was calculated with the formula: bulk density = (water density * sediment density) / (water density + (sediment density - water density) * water content), where water density is 1 g/cm3 and sediment density is 2.65 g/cm3. Measurements were made in the USGS Pacific Coastal and Marine Science Center sediment lab.
    Date: 11-Mar-2020 (process 2 of 3)
    The grain-size distributions of samples were determined in the USGS Pacific Coastal and Marine Science Center sediment lab. Approximately 20 g of sediment was subsampled and 10 mL of 30 percent hydrogen peroxide was added to remove organic material in the sample. The sample was heated at 250 degrees C to remove any remaining hydrogen peroxide and was placed in an ultrasonic bath to liberate the fine fraction. Subsequently, the sample was centrifuged for 1.5 hours to remove soluble salts. Samples were funneled through a 1-mm and a 63-um sieve to separate the gravel (greater than 1 mm), sand (63 um to 1 mm), and mud (less than 63 um). The sand and gravel fractions were dried in an 80-degree C oven and weighed. Five mL of sodium hexametaphosphate was added to the mud fraction and a 20 mL aliquot was taken from a 1 L graduated cylinder to determine the weight of the mud. The particle-size distribution of the mud and sand fractions was analyzed separately using a Beckman Coulter LS 13 320, and the gravel, sand, and mud results were integrated into a single grain-size distribution for each sample. Where used, phi sizes are equal to the negative log base 1 of millimeter size.
    Date: 19-Jun-2020 (process 3 of 3)
    Percent carbon measurements were made in the USGS Pacific Coastal and Marine Science Center sediment lab. To determine percent carbon in sediment samples, approximately 5g of sample sediment was sub-sampled and dried in an 80 degrees C oven overnight. Samples were then pulverized into a fine powder. To obtain percent total carbon (TC), approximately 20mg of the pulverized sample was weighed and wrapped in an aluminum tin. A UIC CM 5200 furnace attached to a CM 5015 coulometer was used to incinerate the samples at 950 degree C which converted the produced CO2 into a value to obtain total carbon as percent dry weight. For percent total inorganic carbon (TIC), approximately 20mg of sample was weighed into and placed in glass sample tubes which were loaded into a UIC CM 5230 acid digester attached to a CM 5015 coulometer. The samples were digested with 2mL perchloric acid and the produced CO2 was measured to obtain a total inorganic carbon value as percent dry weight. To determine percent calcium carbonate of a sample, the percent TIC value was multiplied by 8.333. The percent total organic carbon (TOC) value was determined by subtracting the percent TIC value from the percent TC value. Two analyses were run per system and the results were averaged.
  3. What similar or related data should the user be aware of?
    Folk, Robert Louis, and Ward, William C., 1957, Brazos River bar; a study in the significance of grain size parameters: Journal article Journal of Sedimentary Research, v. 27, n. 1, p. 3-26, SEPM Society for Sedimentary Geology, Boulder, CO.

    Online Links:

    Inman, Douglas Lamar, 1952, Measures for describing the size distribution of sediments: Journal article Journal of Sedimentary Research, v. 22, n. 3, p. 125-145, SEPM Society for Sedimentary Geology, Boulder, CO.

    Online Links:

    Trask, Parker D., 1930, Mechanical analyses of sediments by centrifuge: Journal article Economic Geology, v. 26, n. 6, p. 581-599, Society of Economic Geologists (SEG), Littleton, CO.

    Online Links:

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Data values are within the expected values.
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Dataset Six subsamples were collected from the top 5 centimeters (cm) of each push core, a few push cores included the top 8 cm. The top two subsamples were each 0.5 cm thick, and all following subsamples were each 1 cm thick. Subsamples were placed into pre-weighed Whirl-pak bags.
  5. How consistent are the relationships among the observations, including topology?
    Data values are within the expected values.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey (USGS) as the originator of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    U.S. Geological Survey
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO
    United States

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? These data are available in csv format (ERO19_GS-BD-C.csv) along with CSDGM FGDC-compliant metadata.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    The data is available in comma-separated values (CSV) spreadsheet format. Text editing software can be used to open the file, as well as spreadsheet programs, such as Microsoft Excel.

Who wrote the metadata?

Dates:
Last modified: 31-Dec-2020
Metadata author:
PCMSC Science Data Coordinator
U.S. Geological Survey, Pacific Coastal and Marine Science Center
2885 Mission Street
Santa Cruz, CA
United States

831-427-7520 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P9P7I65U/ERO19_GS_BD_C_metadata.faq.html>
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