Jessica R. Lacy
Joanne C. T. Ferreira
Emily M. Carlson
2016
Water-level, wind-wave, and suspended-sediment concentration (SSC) time-series data from Liberty Island (station LWA), Sacramento-San Joaquin Delta, California, 2015-2017
ver 2.0, September 2019
NetCDF files
data release
DOI:10.5066/F73R0R07
https://doi.org/10.5066/F73R0R07
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
Jessica R. Lacy
Emily M. Carlson
Joanne C. T. Ferreira
2016
Wind-wave and sediment-transport time-series data from Liberty Island and Little Holland Tract, Sacramento-San Joaquin Delta, California, 2015-2017
ver 2.0, September 2019
data release
DOI:10.5066/F73R0R07
Pacific Coastal and Marine Science Center, Santa Cruz, California
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/F73R0R07
Water depth and turbidity time-series data were collected in Little Holland Tract (LHT) from 2015 to 2017. Depth (from pressure) was measured in high-frequency (6 or 8 Hz) bursts. Burst means represent tidal stage, and burst data can be used to determine wave height and period. The turbidity sensors were calibrated to suspended-sediment concentration measured in water samples collected on site. The calibration and fit parameters for all of the turbidity sensors used in the study are tabulated and provided with the data. Data were sequentially added to this data release as they were collected and post-processed.
Typically, each zip folder for a deployment period contains one file from an optical backscatter sensor and two files of data from a bursting pressure sensor.
These data will be used to determine the range of turbidity and suspended-sediment concentration (SSC) in Liberty Island and the extent to which wind waves contribute to turbidity, to investigate physical attributes of flooded habitats that promote enhanced turbidity, and to evaluate the potential for flooded agricultural tracts to contribute to elevated turbidity in adjacent waters.
Information about the data collection field activities can be found at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-659-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-663-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-678-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-607-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-623-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-646-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-662-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-669-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-681-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-613-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-619-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-641-FA
https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-664-FA
20150804
20171003
ground condition at time data were collected
None planned
-121.6917
-121.6533
38.32737
38.24528
USGS Metadata Identifier
USGS:5b98605be4b0702d0e842cb5
Global Change Master Directory (GCMD)
WATER DEPTH
WATER PRESSURE
SEDIMENT TRANSPORT
CURRENTS
WATER TEMPERATURE
WAVE HEIGHT
CONDUCTIVITY
SALINITY
TURBIDITY
TIDAL HEIGHT
PRESSURE SENSORS
CURRENT METERS
WAVE HEIGHT GAUGES
CTD
USGS Thesaurus
time series datasets
CTD measurement
marine water quality
ocean waves
Marine Realms Information Bank (MRIB) keywords
wave observations
water level measurements
physical oceanography
None
U.S. Geological Survey
USGS
Coastal and Marine Hazards and Resources Program
CMHRP
Pacific Coastal and Marine Science Center
PCMSC
Current
Suspended-sediment concentration
Wind waves
Shallow-water habitat
Tidal shallows
ISO 19115 Topic Category
inlandWaters
Geographic Names Information System (GNIS)
California
Sacramento-San Joaquin Delta
Yolo County
Solano County
Liberty Island
Little Holland Tract
Cache Slough
none
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.
PCMSC Science Data Coordinator
U.S. Geological Survey, Pacific Coastal and Marine Science Center
mailing and physical address
2885 Mission Street
Santa Cruz
CA
95060
USA
831-427-4747
pcmsc_data@usgs.gov
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=2018_locus_map.png&allowOpen=true
Map of Liberty Island and Little Holland Tract in the Sacramento-San Joaquin Delta showing locations of sampling stations.
PNG
Alex G Snyder
Andrew W Stevens
Emily M Carlson
Jessica R Lacy
2016
Digital elevation model of Little Holland Tract, Sacramento-San Joaquin Delta, California, 2015
data release
doi:10.5066/F7RX9954
Pacific Coastal and Marine Science Center, Santa Cruz, California
U.S. Geological Survey
http://dx.doi.org/10.5066/F7RX9954
No formal attribute accuracy tests were conducted.
Data fall within expected ranges.
Typically, except for times of instrument failure, each zip folder for a deployment period contains one file from an optical backscatter sensor and two files of data from a bursting pressure sensor. Data were sequentially added to this data release as they were retrieved and post-processed. Users are advised to read the metadata for each part of this data release carefully for additional details.
A formal accuracy assessment of the horizontal positional information in the data set has either not been conducted, or is not applicable.
There are two sources of uncertainty associated with vertical positioning of the instruments: 1) the measuring tools used during instrument mounting; and, 2) the amount of settling that occurs during deployment. There was no evidence that the platforms settled to a large degree, they are easily lifted by one person, the sediment tends to be very compacted in the study area, and analysis of distance to bed data did not show gradients over the duration of deployment. The measuring tools used to mount the instruments onto the platforms have a resolution of 0.1 cm resulting in an uncertainty of 0.05 cm.
The Iowa Environmental Mesonet (IEM)
2016
ASOS-AWOS-METAR Data Download
Ames, IA
Iowa State University
https://mesonet.agron.iastate.edu/request/download.phtml?network=CA_ASOS#
Digital Resources
20150804
20171003
observed
IEM
Source information used in support of the development of the dataset. Local atmospheric readings were obtained from the IEM database to use during post-processing of the data to adjust for local atmospheric deviations.
Instruments included in deployment are: RBR duo bursting pressure sensor, and RBR virtuoso turbidity meter.
20150804
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20151008
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20151207
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20160204
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20160412
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20160608
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20160809
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20161012
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20161207
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20160130
Data were accumulated into NetCDF files. During post-processing, data collected when instruments were out of the water, and data degraded by biological fouling, were removed from the time series. Bad data points were identified by 1) the deployment and recovery times; 2) pressure readings equal to or less than 3 cm of water; and, 3) amplitude or correlation values outside of predetermined quality thresholds for the velocimeter. Pressure data were adjusted from absolute pressure to hydrostatic pressure by removing local atmospheric pressure. Local atmospheric pressure was obtained from IEM for the Travis Air Force Base (SUU) station, which is located 15 miles from the study site.
20170207
Optical backscatter (OBS) data were put through a rigorous cleaning process, as these types of data are inherently noisy. First, the data were inspected for extended periods of time (typically many days) of unrealistic values that did not follow typical trends. These periods of bad data, believed to be caused by vegetation blocking the sensor, were manually removed from the time series. Second, large values of the first derivative of the time series were removed, which indicate unrealistic single point spikes in the data. Spikes were identified by change thresholds of +/-70 mg/L for the burst-average time series and +/-1 mg/L within the bursts. Third, readings above 90 percent of the maximum instrument voltage were removed. In particularly noisy data, points deviating more than 3 standard deviations from the running mean were removed. Finally, 'island' points were identified (and removed) by checking for real-value points with both neighbors flagged as bad. Bad data points were then replaced by linear interpolation, except for the large chunks that were removed in the first step of filtering. The OBS data were converted to suspended-sediment concentration using calibration constants derived from linear regression between OBS data and sediment concentration measured in water samples collected in the study area.
20170207
Files were named with a convention that uses a 13-digit alpha-numeric code. The first two characters for this dataset are all 'DL' for the experiment name. For deployments 1 - 9, the third character is a number indicating which deployment period the data comes from (1, 2, 3, etc.); the fourth and fifth positions represent the calendar year in which the first data point in the file was taken (15, 2015; 16, 2016). Deployments 10 to 13 occurred during the year 2017. In these cases, the third and fourth character indicates the deployment number while a '7' in the fifth position represents calendar year. The sixth position is a letter indicating the water body/region (L, Liberty Island; H, Little Holland Tract). The seventh position is a letter representing the station type (V, velocity station; W, wind-wave station). The eighth position represents the location of the station (A, B, C, etc.) within the water body/region. Next is a three-character code for the instrument type (vec, Nortek's Acoustic Doppler Velocimeter; rbr, RBR's bursting pressure sensor; ctd, RBR's CTD; vir, RBR's Virtuosos turbidity sensor). There are an additional two characters for the instruments that collect in a bursting pattern to indicate if the burst is included in the file or the statistics of the burst, this indicator is omitted if there is no bursting pattern (-b, burst; -s, statistics).
20180806
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20170330
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20170531
Instruments were retrieved and replaced with identical instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
2017728
Instruments were retrieved. The data from the retrieved instruments were post-processed and sequentially added to this data release.
20171003
Data were accumulated into NetCDF files. During post-processing, data collected when instruments were out of the water, and data degraded by biological fouling, were removed from the time series. Bad data points were identified by 1) the deployment and recovery times; 2) pressure readings equal to or less than 3 cm of water; and, 3) amplitude or correlation values outside of predetermined quality thresholds for the velocimeter. Pressure data were adjusted from absolute pressure to hydrostatic pressure by removing local atmospheric pressure. Local atmospheric pressure was obtained from IEM for the Travis Air Force Base (SUU) station, which is located 15 miles from the study site.
20180806
Optical backscatter (OBS) data were put through a rigorous cleaning process, as these types of data are inherently noisy. First, the data were inspected for extended periods of time (typically many days) of unrealistic values that did not follow typical trends. These periods of bad data, believed to be caused by vegetation blocking the sensor, were manually removed from the time series. Second, large values of the first derivative of the time series were removed, which indicate unrealistic single point spikes in the data. Spikes were identified by change thresholds of +/-70 mg/L for the burst-average time series and +/-1 mg/L within the bursts. Third, readings above 90 percent of the maximum instrument voltage were removed. In particularly noisy data, points deviating more than 3 standard deviations from the running mean were removed. Finally, 'island' points were identified (and removed) by checking for real-value points with both neighbors flagged as bad. Bad data points were then replaced by linear interpolation, except for the large chunks that were removed in the first step of filtering. The OBS data were converted to suspended-sediment concentration using calibration constants derived from linear regression between OBS data and sediment concentration measured in water samples collected in the study area.
20180806
Files were named with a convention that uses a 13-digit alpha-numeric code. The first two characters for this dataset are all 'DL' for the experiment name. For deployments 1 - 9, the third character is a number indicating which deployment period the data comes from (1, 2, 3, etc.); the fourth and fifth positions represent the calendar year in which the first data point in the file was taken (15, 2015; 16, 2016). Deployments 10 to 13 occurred during the year 2017. In these cases, the third and fourth character indicates the deployment number while a '7' in the fifth position represents calendar year. The sixth position is a letter indicating the water body/region (L, Liberty Island; H, Little Holland Tract). The seventh position is a letter representing the station type (V, velocity station; W, wind-wave station). The eighth position represents the location of the station (A, B, C, etc.) within the water body/region. Next is a three-character code for the instrument type (vec, Nortek's Acoustic Doppler Velocimeter; rbr, RBR's bursting pressure sensor; ctd, RBR's CTD; vir, RBR's Virtuosos turbidity sensor). There are an additional two characters for the instruments that collect in a bursting pattern to indicate if the burst is included in the file or the statistics of the burst, this indicator is omitted if there is no bursting pattern (-b, burst; -s, statistics).
20180806
Corrected the original publication date for Citation and for Larger Work Citation to conform to new guidance issued regarding data release revisions. For information regarding the original version of this data release, see Point of Contact section of this metadata file.
20191007
Susan A Cochran
U.S. Geological Survey, Pacific Coastal and Marine Science Center
mailing and physical
2885 Mission St.
Santa Cruz
CA
95060
United States
831-460-7545
scochran@usgs.gov
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
20201019
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Point
NetCDF files are self-contained and attribute information may be found in the header of the file itself.
The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.
U.S. Geological Survey - ScienceBase
Mailing and Physical Address
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
USA
1-888-275-8747
sciencebase@usgs.gov
Downloadable time-series data in NetCDF format.
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.
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20150804-20151007
zip archive
79.4
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL115LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20151008-20151207
zip archive
76.1
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL215LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20151207-20160204.
zip archive
74.7
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL315LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20160204-20160412.
zip archive
86.9
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL416LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20160412-20160608
zip archive
71.4
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL516LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20160608-20160809
zip archive
79.1
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL616LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20160809-20161012
zip archive
82.7
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL716LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20161012-20161207
zip archive
69.0
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL816LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20161207-20170130
zip archive
65.9
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL916LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20170130-20170330
zip archive
101.8
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL107LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20170330-20170531
zip archive
111.5
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL117LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20170531-20170728
zip archive
100.6
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL127LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
NetCDF
MATLAB R2016b
Zip file contains time-series data in NetCDF format for the deployment period of 20170728-20171003
zip archive
119.7
https://www.sciencebase.gov/catalog/file/get/5b98605be4b0702d0e842cb5?name=DL137LWA.zip
https://www.sciencebase.gov/catalog/item/5b98605be4b0702d0e842cb5
https://doi.org/10.5066/F73R0R07
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to begin downloading the zipped file of data from this particular deployment. The second link points to a page with metadata and data from all the deployments at this station. The third link points to the landing page for the entire project.
None
20201019
PCMSC Science Data Coordinator
U.S. Geological Survey, Pacific Coastal and Marine Science Center
mailing and physical address
2885 Mission Street
Santa Cruz
CA
95060
USA
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
universal time
None
None