Water-level, wind-wave, and suspended-sediment concentration (SSC) time-series data from Little Holland Tract (station HWA), Sacramento-San Joaquin Delta, California, 2015

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Jessica R. Lacy
Originator: Emily M. Carlson
Originator: Joanne C. T. Ferreira
Publication_Date: 2016
Title:
Water-level, wind-wave, and suspended-sediment concentration (SSC) time-series data from Little Holland Tract (station HWA), Sacramento-San Joaquin Delta, California, 2015
Edition: ver 2.0, September 2019
Geospatial_Data_Presentation_Form: NetCDF files
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F73R0R07
Online_Linkage: https://doi.org/10.5066/F73R0R07
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Jessica R. Lacy
Originator: Emily M. Carlson
Originator: Joanne C. T. Ferreira
Publication_Date: 2016
Title:
Wind-wave and sediment-transport time-series data from Liberty Island and Little Holland Tract, Sacramento-San Joaquin Delta, California, 2015-2017
Edition: ver 2.0, September 2019
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F73R0R07
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.5066/F73R0R07
Description:
Abstract:
Water depth and turbidity time-series data were collected in Little Holland Tract (LHT) in 2015. 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.
Purpose:
These data will be used to determine the range of turbidity and suspended-sediment concentration (SSC) in Little Holland Tract 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.
Supplemental_Information:
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20150804
Ending_Date: 20151211
Currentness_Reference: ground condition at time data were collected
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -121.6917
East_Bounding_Coordinate: -121.6533
North_Bounding_Coordinate: 38.32737
South_Bounding_Coordinate: 38.24528
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5b982933e4b0702d0e8425a5
Theme:
Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
Theme_Keyword: WATER DEPTH
Theme_Keyword: WATER PRESSURE
Theme_Keyword: SEDIMENT TRANSPORT
Theme_Keyword: CURRENTS
Theme_Keyword: WATER TEMPERATURE
Theme_Keyword: WAVE HEIGHT
Theme_Keyword: CONDUCTIVITY
Theme_Keyword: SALINITY
Theme_Keyword: TURBIDITY
Theme_Keyword: TIDAL HEIGHT
Theme_Keyword: PRESSURE SENSORS
Theme_Keyword: CURRENT METERS
Theme_Keyword: WAVE HEIGHT GAUGES
Theme_Keyword: CTD
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: time series datasets
Theme_Keyword: CTD measurement
Theme_Keyword: marine water quality
Theme_Keyword: ocean waves
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: wave observations
Theme_Keyword: water level measurements
Theme_Keyword: physical oceanography
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Theme_Keyword: Current
Theme_Keyword: Suspended-sediment concentration
Theme_Keyword: Wind waves
Theme_Keyword: Shallow-water habitat
Theme_Keyword: Tidal shallows
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: California
Place_Keyword: Sacramento-San Joaquin Delta
Place_Keyword: Yolo County
Place_Keyword: Solano County
Place_Keyword: Liberty Island
Place_Keyword: Little Holland Tract
Place_Keyword: Cache Slough
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.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: PCMSC Science Data Coordinator
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical address
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: USA
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description:
Map of Liberty Island and Little Holland Tract in the Sacramento-San Joaquin Delta showing locations of sampling stations.
Browse_Graphic_File_Type: PNG
Cross_Reference:
Citation_Information:
Originator: Alex G Snyder
Originator: Andrew W Stevens
Originator: Emily M Carlson
Originator: Jessica R Lacy
Publication_Date: 2016
Title:
Digital elevation model of Little Holland Tract, Sacramento-San Joaquin Delta, California, 2015
Series_Information:
Series_Name: data release
Issue_Identification: doi:10.5066/F7RX9954
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: http://dx.doi.org/10.5066/F7RX9954
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.
Logical_Consistency_Report: Data fall within expected ranges.
Completeness_Report:
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.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
A formal accuracy assessment of the horizontal positional information in the data set has either not been conducted, or is not applicable.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
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.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: The Iowa Environmental Mesonet (IEM)
Publication_Date: 2016
Title: ASOS-AWOS-METAR Data Download
Publication_Information:
Publication_Place: Ames, IA
Publisher: Iowa State University
Online_Linkage:
Type_of_Source_Media: Digital Resources
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20150804
Ending_Date: 20151211
Source_Currentness_Reference: observed
Source_Citation_Abbreviation: IEM
Source_Contribution:
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.
Process_Step:
Process_Description:
Instruments included in deployment are: RBR duo bursting pressure sensor, and RBR virtuoso turbidity meter.
Process_Date: 20150804
Process_Step:
Process_Description:
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.
Process_Date: 20151008
Process_Step:
Process_Description: Instruments were removed from station. End of data collection.
Process_Date: 20151207
Process_Step:
Process_Description:
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.
Process_Date: 20151211
Process_Step:
Process_Description:
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.
Process_Date: 20151211
Process_Step:
Process_Description:
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).
Process_Date: 20151211
Process_Step:
Process_Description:
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.
Process_Date: 20191007
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Susan A Cochran
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission St.
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: United States
Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@usgs.gov
Process_Step:
Process_Description:
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
Process_Date: 20201019
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
Performed minor edits to the metadata to correct typos. No data were changed
Process_Date: 20211014
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Susan A. Cochran
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
NetCDF files are self-contained and attribute information may be found in the header of the file itself.
Entity_and_Attribute_Detail_Citation:
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.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description: Downloadable time-series data in NetCDF format.
Distribution_Liability:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: NetCDF
Format_Version_Number: MATLAB R2016b
Format_Information_Content:
Zip file contains time-series data in NetCDF format for the deployment period of 20150804-20151007
File_Decompression_Technique: zip archive
Transfer_Size: 80.4
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
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.
Fees: None
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: NetCDF
Format_Version_Number: MATLAB R2016b
Format_Information_Content:
Zip file contains time-series data in NetCDF format for the deployment period of 20151008-20151207
File_Decompression_Technique: zip archive
Transfer_Size: 72.01
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
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.
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20211014
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: PCMSC Science Data Coordinator
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical address
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: USA
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: universal time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None

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