Surface-sediment grain-size distributions from the Elwha River delta, Washington, September 2014

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Frequently anticipated questions:


What does this data set describe?

Title:
Surface-sediment grain-size distributions from the Elwha River delta, Washington, September 2014
Abstract:
This portion of the data release presents sediment grain-size data from samples collected on the Elwha River delta, Washington, in September 2014 (USGS Field Activity 2014-649-FA). Surface sediment was collected from 63 locations using a small ponar, or 'grab', sampler from the R/V Frontier on September 5, 2014 in depths between about 1 and 17 m around the delta. The locations of grab samples were determined with a hand-held global navigation satellite system (GNSS). The grain-size distributions of samples were determined using standard techniques developed by the USGS Pacific Coastal and Marine Science Center sediment lab. The grain-size data are provided in a comma-delimited spreadsheet (.csv).
Supplemental_Information:
Additional information about the field activities from which these data were derived are available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2014-649-FA
  1. How might this data set be cited?
    Stevens, Andrew W., Gelfenbaum, Guy, Warrick, Jonathan A., Miller, Ian M., and Weiner, Heather M., 2016, Surface-sediment grain-size distributions from the Elwha River delta, Washington, September 2014: data release DOI:10.5066/F7P55KN0, U.S. Geological Survey, Santa Cruz, CA.

    Online Links:

    This is part of the following larger work.

    Stevens, Andrew W., Gelfenbaum, Guy, Warrick, Jonathan A., Miller, Ian M., and Weiner, Heather M., 2016, Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, September 2014: data release DOI:10.5066/F7P55KN0, U.S. Geological Survey, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -123.583655
    East_Bounding_Coordinate: -123.535125
    North_Bounding_Coordinate: 48.154274
    South_Bounding_Coordinate: 48.139830
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 05-Sep-2014
    Ending_Date: 05-Sep-2014
    Currentness_Reference:
    ground condition at time the samples were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: comma-delimited spreadsheet (.csv file)
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set.
    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-6. Longitudes are given to the nearest 1.0E-6. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is WGS1984.
      The ellipsoid used is WGS1984.
      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?
    Attribute Table
    Table containing attribute information associated with the dataset (Source: Producer defined)
    FACS/FAN I.D.
    Unique U.S. Geological Survey field activity identifier (Source: producer defined) Unique identifier for the U.S. Geological Survey field activity
    Sample ID
    Name of sample (Source: producer defined) Unique identifier for the sample used given in the field
    Sample Recovered
    Flag to indicate whether sample was recovered (Source: producer defined)
    ValueDefinition
    YesSample collection successful at site, sample collected
    NoSample collection unsuccessful, no sample recovered. Not used in this data release as all samples were collected successfully.
    Date Collected
    Date of sample collection in mm/dd/yyyy format (Source: producer defined)
    Range of values
    Minimum:9/05/2014
    Maximum:9/05/2014
    Units:Dates in mm/dd/yyyy format
    Time (GMT)
    Time of sample collection in HH:MM:SS format relative to Grenwich Mean Time (GMT). N.A. = Not Available, because information was not recorded (Source: producer defined)
    Range of values
    Minimum:00:00:00
    Maximum:23:59:59
    Units:Times in HH:MM:SS format
    Latitude (deg. N)
    Latitude of sample in decimal degrees, north (Source: producer defined)
    Range of values
    Minimum:48.139830
    Maximum:48.154274
    Units:decimal degrees
    Longitude (deg. E)
    Longitude of sample in decimal degrees, east (Source: producer defined)
    Range of values
    Minimum:-123.583655
    Maximum:-123.535125
    Units:decimal degrees
    Sample Type
    Type of sample collected (Source: Produce defined)
    ValueDefinition
    GrabSample collected with grab sampler from boat
    Lab ID
    Name of sample identifier in YY-FFFFF-XX format, where YY is the 2-digit year (for example 16=2016, 99=1999), 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=not applicable, because no sample was recovered. (Source: Producer defined) Unique identifier for the sample given during analysis in the lab
    Wt. percent in -2.00 phi bin
    Weight percent of sample with grain diameter greater than -2.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in -1.00 phi bin
    Weight percent of sample with grain diameter between -2.00 and -1.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in -0.75 phi bin
    Weight percent of sample with grain diameter between -1.00 and -0.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in -0.50 phi bin
    Weight percent of sample with grain diameter between -0.75 and -0.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in -0.25 phi bin
    Weight percent of sample with grain diameter between -0.50 and -0.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 0.00 phi bin
    Weight percent of sample with grain diameter between -0.25 and 0.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 0.25 phi bin
    Weight percent of sample with grain diameter between 0.00 and 0.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 0.50 phi bin
    Weight percent of sample with grain diameter between 0.25 and 0.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 0.75 phi bin
    Weight percent of sample with grain diameter between 0.50 and 0.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 1.00 phi bin
    Weight percent of sample with grain diameter between 0.75 and 1.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 1.25 phi bin
    Weight percent of sample with grain diameter between 1.00 and 1.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 1.50 phi bin
    Weight percent of sample with grain diameter between 1.25 and 1.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 1.75 phi bin
    Weight percent of sample with grain diameter between 1.50 and 1.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 2.00 phi bin
    Weight percent of sample with grain diameter between 1.75 and 2.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 2.25 phi bin
    Weight percent of sample with grain diameter between 2.00 and 2.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 2.50 phi bin
    Weight percent of sample with grain diameter between 2.25 and 2.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 2.75 phi bin
    Weight percent of sample with grain diameter between 2.50 and 2.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 3.00 phi bin
    Weight percent of sample with grain diameter between 2.75 and 3.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 3.25 phi bin
    Weight percent of sample with grain diameter between 3.00 and 3.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 3.50 phi bin
    Weight percent of sample with grain diameter between 3.25 and 3.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 3.75 phi bin
    Weight percent of sample with grain diameter between 3.50 and 3.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 4.00 phi bin
    Weight percent of sample with grain diameter between 3.75 and 4.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 4.25 phi bin
    Weight percent of sample with grain diameter between 4.00 and 4.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 4.50 phi bin
    Weight percent of sample with grain diameter between 4.25 and 4.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 4.75 phi bin
    Weight percent of sample with grain diameter between 4.50 and 4.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 5.00 phi bin
    Weight percent of sample with grain diameter between 4.75 and 5.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 5.25 phi bin
    Weight percent of sample with grain diameter between 5.00 and 5.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 5.50 phi bin
    Weight percent of sample with grain diameter between 5.25 and 5.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 5.75 phi bin
    Weight percent of sample with grain diameter between 5.50 and 5.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 6.00 phi bin
    Weight percent of sample with grain diameter between 5.75 and 6.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 6.25 phi bin
    Weight percent of sample with grain diameter between 6.00 and 6.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 6.50 phi bin
    Weight percent of sample with grain diameter between 6.25 and 6.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 6.75 phi bin
    Weight percent of sample with grain diameter between 6.50 and 6.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 7.00 phi bin
    Weight percent of sample with grain diameter between 6.75 and 7.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 7.25 phi bin
    Weight percent of sample with grain diameter between 7.00 and 7.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 7.50 phi bin
    Weight percent of sample with grain diameter between 7.25 and 7.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 7.75 phi bin
    Weight percent of sample with grain diameter between 7.50 and 7.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 8.00 phi bin
    Weight percent of sample with grain diameter between 7.75 and 8.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 8.25 phi bin
    Weight percent of sample with grain diameter between 8.00 and 8.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 8.50 phi bin
    Weight percent of sample with grain diameter between 8.25 and 8.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 8.75 phi bin
    Weight percent of sample with grain diameter between 8.50 and 8.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 9.00 phi bin
    Weight percent of sample with grain diameter between 8.75 and 9.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 9.25 phi bin
    Weight percent of sample with grain diameter between 9.00 and 9.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 9.50 phi bin
    Weight percent of sample with grain diameter between 9.25 and 9.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 9.75 phi bin
    Weight percent of sample with grain diameter between 9.50 and 9.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 10.00 phi bin
    Weight percent of sample with grain diameter between 9.75 and 10.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 10.25 phi bin
    Weight percent of sample with grain diameter between 10.00 and 10.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 10.50 phi bin
    Weight percent of sample with grain diameter between 10.25 and 10.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 10.75 phi bin
    Weight percent of sample with grain diameter between 10.50 and 10.75 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 11.00 phi bin
    Weight percent of sample with grain diameter between 10.75 and 11.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 11.25 phi bin
    Weight percent of sample with grain diameter between 11.00 and 11.25 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 11.50 phi bin
    Weight percent of sample with grain diameter between 11.25 and 11.50 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 12.00 phi bin
    Weight percent of sample with grain diameter between 11.50 and 12.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Wt. percent in 13.00 phi bin
    Weight percent of sample with grain diameter between 12.00 and 13.00 phi. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Percent Gravel
    percent of sample greater than 2 mm. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Percent Sand
    percent of sample less than 2 mm and greater than 63 microns. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Percent Silt
    percent of sample less than 63 microns and greater than 4 microns. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Percent Clay
    percent of sample less than 4 microns. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    Percent Mud
    percent of sample less than 63 microns. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:100
    Units:percentage
    D5 Phi
    Phi size at D5 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D10 Phi
    Phi size at D10 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D16 Phi
    Phi size at D16 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D25 Phi
    Phi size at D25 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D50 Phi
    Phi size at D50, or average particle diameter by mass, for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D75 Phi
    Phi size at D75 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D84 Phi
    Phi size at D84 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D90 Phi
    Phi size at D90 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    D95 Phi
    Phi size at D95 for sample. (Source: producer defined)
    Range of values
    Minimum:-4
    Maximum:13
    Units:Phi size
    F-W Median
    Phi size median for sample by Folk and Ward (1957) method. (Source: producer defined)
    Range of values
    Minimum:-3
    Maximum:6.05
    Units:Phi size
    F-W Mean
    Phi size mean for sample by Folk and Ward (1957) method. (Source: producer defined)
    Range of values
    Minimum:-3
    Maximum:5.88
    Units:Phi size
    F-W Sorting
    sorting for sample by Folk and Ward (1957) method. (Source: producer defined)
    Range of values
    Minimum:0.53
    Maximum:2.82
    Units:Phi size
    F-W Skewness
    skewness for sample by Folk and Ward (1957) method. (Source: producer defined)
    Range of values
    Minimum:-0.31
    Maximum:0.61
    Units:Phi size
    F-W Kurtosis
    Kurtosis for sample by Folk and Ward (1957) method. (Source: producer defined)
    Range of values
    Minimum:0.49
    Maximum:3.12
    Units:Phi size
    Inman Median
    Phi size median for sample by Inman (1952) method. (Source: producer defined)
    Range of values
    Minimum:-3
    Maximum:6.05
    Units:Phi size
    Inman Mean
    Phi size mean for sample by Inman (1952) method. (Source: producer defined)
    Range of values
    Minimum:-3
    Maximum:5.88
    Units:Phi size
    Inman Sorting
    sorting for sample by Inman (1952) method. (Source: producer defined)
    Range of values
    Minimum:0.48
    Maximum:2.98
    Units:Phi size
    Inman Skew 16-84
    skewness for sample (D16-D84) by Inman (1952) method. (Source: producer defined)
    Range of values
    Minimum:-0.24
    Maximum:0.60
    Units:Phi size
    Inman Skew 05-95
    skewness for sample (D5-D95) by Inman (1952) method. (Source: producer defined)
    Range of values
    Minimum:-0.80
    Maximum:3.28
    Units:Phi size
    Inman Kurtosis
    Kurtosis for sample by Inman (1952) method. (Source: producer defined)
    Range of values
    Minimum:0.14
    Maximum:3.93
    Units:Phi size
    Moment 1 Mean
    moment measure of mean. (Source: producer defined)
    Range of values
    Minimum:-2.12
    Maximum:5.89
    Units:Phi size
    Moment 2 Variance
    moment measure of variance. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:7.17
    Units:Phi size
    Moment 3 Skewness
    moment measure of skewness. (Source: producer defined)
    Range of values
    Minimum:-0.29
    Maximum:49.36
    Units:Phi size
    Moment 4 Kurtosis
    moment measure of kurtosis. (Source: producer defined)
    Range of values
    Minimum:2.17
    Maximum:2437.02
    Units:Phi size

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Andrew W. Stevens
    • Guy Gelfenbaum
    • Jonathan A. Warrick
    • Ian M. Miller
    • Heather M. Weiner
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Andrew W. Stevens
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    USA

    831-460-7424 (voice)
    astevens@usgs.gov

Why was the data set created?

Data were obtained to assess the ecosystem response following the removal of two dams on the Elwha River. These data are intended for science 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: 05-Sep-2014 (process 1 of 2)
    Surface sediment was collected on September 5, 2014 at a total of 63 locations using a small ponar, or 'grab', sampler from the R/V Frontier in water depths between about 1 and 17 m around the delta. A handheld global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples.
    Date: 23-Oct-2014 (process 2 of 2)
    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 sub-sampled and 10 mL of 35 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 2 mm and 63 um sieves to separate the gravel (greater than 2 mm), sand (63 um to 2 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.
  3. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?
    No formal attribute accuracy tests were conducted
  2. How accurate are the geographic locations?
    The locations of samples were determined using a Garmin 78s handheld global satellite navigation systems (GNSS) receiver capable of receiving wide area augmentation system (WAAS) signals. The manufacturer reported accuracy for horizontal positions is 3-5 m while receiving WAAS signals.
  3. How accurate are the heights or depths?
    No formal positional accuracy tests were conducted
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted

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 as the originator(s) of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - Science Base
    U.S. Geological Survey
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO
    USA

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? Grain-size analyses data are presented as a comma-delimited text file (.csv), along with associated 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?

Who wrote the metadata?

Dates:
Last modified: 30-Nov-2016
Metadata author:
Andrew W. Stevens
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Oceanographer
2885 Mission St.
Santa Cruz, CA
USA

831-460-7424 (voice)
astevens@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/westcoast/washington/elwha/ew14_sept_grainsize.faq.html>
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