Hydrodynamic time-series data from San Pablo Bay and Grizzly Bay, California, 2020

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Joanne C. T. Ferreira
Originator: Samantha C. McGill
Originator: Rachel M. Allen
Originator: Jessica R. Lacy
Publication_Date: 20210915
Title:
Hydrodynamic time-series data from San Pablo Bay and Grizzly Bay, California, 2020
Geospatial_Data_Presentation_Form: NetCDF files
Series_Information:
Series_Name: data release
Issue_Identification: doi:10.5066/P9N88U5G
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9N88U5G
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Samantha C. McGill
Originator: Jessica R. Lacy
Originator: Joanne C. T. Ferreira
Originator: Rachel M. Allen
Originator: Lukas WinklerPrins
Originator: Angela C. Tan
Publication_Date: 2021
Title:
Hydrodynamic and sediment transport data from San Pablo Bay and Grizzly Bay, California, 2019
Series_Information:
Series_Name: data release
Issue_Identification: doi:10.5066/P9N88U5G
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9N88U5G
Description:
Abstract:
Hydrodynamic and sediment transport time-series data, including water depth, velocity, turbidity, conductivity, and temperature, were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center within two embayments of San Francisco Bay. Data were collected in San Pablo Bay and Grizzly Bay from January to June 2020 at seven locations. Data files are grouped by area (shallows of San Pablo Bay, channel of San Pablo Bay, and shallows of Grizzly Bay). Each shallow site contained a variety of sensors located on two tripods, while the channel site consisted of one tripod. Users are advised to assess data quality carefully, and to check metadata for instrument information, as platform deployment times and data-processing methods varied.
Purpose:
These data were collected to measure the physical forces that resuspend sediment, specifically waves and tidal currents, as well as suspended-sediment concentration in the water column. 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 science researchers, students, policy makers, and the general public.
Supplemental_Information:
Additional information about the field activity from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2020-603-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20200121
Ending_Date: 20200602
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: -122.6160
East_Bounding_Coordinate: -121.9456
North_Bounding_Coordinate: 38.17843
South_Bounding_Coordinate: 37.95883
Keywords:
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: Conductivity
Theme_Keyword: Salinity
Theme_Keyword: Turbidity
Theme_Keyword: Tidal height
Theme_Keyword: Pressure sensors
Theme_Keyword: Wave height gauges
Theme_Keyword: CTD
Theme_Keyword: Aquatic ecosystems
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Water-Quality Parameters
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: time series datasets
Theme_Keyword: CTD measurement
Theme_Keyword: marine water quality
Theme_Keyword: suspended material (water)
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: seabed
Theme_Keyword: field observation
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: Suspended-sediment concentration
Theme_Keyword: Shallow-water habitat
Theme_Keyword: Tidal shallows
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:60a45590d34ea221ce45ed3a
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: State of California
Place_Keyword: Grizzly Bay
Place_Keyword: San Pablo Bay
Place_Keyword: San Francisco Bay
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 originators of the dataset and in products derived from these data. This information is not intended for navigation purposes.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060-5792
Country: US
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description:
Digital elevation model (DEM) of study area showing locations of stations in San Pablo Bay and Grizzly Bay where instrumentation was deployed.
Browse_Graphic_File_Type: PNG
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.
Logical_Consistency_Report:
No formal logical accuracy tests were conducted. Data fall within expected ranges.
Completeness_Report:
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.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal accuracy derived from GPS instrumentation is less than 1 m.
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, 2) the amount of settling that occurs during deployment. No corrections were made to the data to account for these errors. Users may refer to the pre-deployment sensor heights provided in the data files in addition to the nominal heights of the sensors which are also found in the data files to verify changes in sensor elevation. The heights provided do not account for any sinking that may have occurred during the deployment.
Lineage:
Process_Step:
Process_Description:
Two instrument tripod platforms were deployed at the Grizzly Bay shallow sites, and together contained the following instruments: RBR DUO bursting pressure sensor, Two Echologger Altimeter, two RBR CTDs, RBR Vituosos with Seapoint turbidity meter, three Nortek single point acoustic doppler velocimeters each with a Seapoint turbidity meter, Sequoia Scientific Laser In-situ scattering and transmissometry (LISST).
Process_Date: 20200121
Process_Step:
Process_Description:
Two instrument tripod platforms were deployed at the San Pablo Bay shallow sites, and together contained the following instruments: RBR DUO bursting pressure sensor, Echologger Altimeter, two RBR CTDs, RBR Vituosos with Seapoint turbidity meter, three Nortek single point acoustic doppler velocimeters with Seapoint turbidity meter, Sequoia Scientific acoustic backscatter.
Process_Date: 20200122
Process_Step:
Process_Description:
An instrument platform was deployed at the San Pablo Bay channel site containing the following instruments: RDInstruments acoustic doppler current profiler and RBR CTD.
Process_Date: 20200121
Process_Step:
Process_Description:
Instruments were retrieved from the San Pablo Bay shallow and San Pablo Bay channel sites. The data from the retrieved instruments were post-processed using manufacturers software packages and USGS matlab codes.
Process_Date: 20200527
Process_Step:
Process_Description:
Instruments were retrieved from the Grizzly Bay shallow sites. The data from the retrieved instruments were post-processed using manufacturers software packages and USGS matlab codes.
Process_Date: 20200602
Process_Step:
Process_Description:
Data were accumulated into NetCDF files. During post-processing, data collected when instruments were out of the water were removed from the time series. Bad data points identified by 1) the deployment and recovery times, 2) data flagged as erroneous by the manufacturer, 3) amplitude or correlation values outside of predetermined quality thresholds for the velocimeter, were removed. The files include data of intermittent poor quality due to interference by vegetation caught on frames or other biofouling. In a few datasets with persistent vegetative/biofouling interference the compromised data were removed, as noted in the associated metadata. Turbidity data are raw unless otherwise noted and include high values that may be attributable to vegetation. Use of these data requires careful assessment of data quality. LISST volume concentrations are most accurate when the optical percent transmission is above 30; when this is true, light passing through the sample volume is unlikely to be scattered by more than one particle. Low quality LISST data at the end of a few files were removed, however some bad data are still present in the files and therefore judgment should be applied when using them, as with all other data files. Some platforms experienced sinking over time or shifted from an unknown cause which altered the roll, pitch, heading, or sensor elevation. No corrections were made to account for these possible shifts, therefore the user should examine the data and metadata carefully.
Process_Date: 20210605
Process_Step:
Process_Description:
Files were named with a convention that uses a 12- to 15-digit alpha-numeric code. The first three characters for this dataset are all 'ERO' for the experiment name; the fourth and fifth positions represent the calendar year in which the data were collected (20, 2020); the sixth, seventh and eighth characters are an alphabetic code for the site name (GHT, PCT, etc.); the ninth and tenth characters represent the instrument position on the platform, where 01 is the top-most. Next is a two- or three-character code for the instrument type (vec, Norteks Acoustic Doppler Velocimeter; wh, RDInstrument's acoustic doppler current profile current data; wv, RDInstrument's acoustic doppler current profile wave data; pt, RBRs bursting pressure sensor with temperature; ctd, RBRs CTD; tu, RBRs Virtuoso turbidity logger; ls or lsa, Sequoia Scientifics LISST, LISST ABS). There are an additional 2 to 3 characters for instruments that collect in a bursting pattern to indicate whether the file includes the burst data (-b) or the statistics and/or singular observations of the burst (-s), and for instruments that output wave statistics (-wvs). This indicator is omitted if there is no bursting pattern.
Process_Date: 20216110
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Data were collected continuously at survey locations in San Pablo Bay and Grizzly Bay, California. Refer to self-contained NetCDF files for more location information.
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 1.0E-5
Longitude_Resolution: 1.0E-5
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: World Geodetic System 1984 (WGS84)
Ellipsoid_Name: WGS84
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563
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: 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:
These data are available in zipped NetCDF format accompanied by CSDGM FGDC-compliant metadata.
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
Format_Specification: Data are in NetCDF formats.
Format_Information_Content: Downloadable zip file contains NetCDF (.nc) files and metadata.
File_Decompression_Technique: WinZip or archive utility
Transfer_Size: 1680
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 download the zipped file of time-series data from Grizzly Bay shallows. The second link points to a landing page with the time-series data, metadata, and a browse image for all three study sites. The third link points to the landing page for the entire data release, including links to pages of the various data files.
Fees: none
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: NetCDF
Format_Version_Number: MATLAB
Format_Specification: Data are in NetCDF formats.
Format_Information_Content: Downloadable zip file contains NetCDF (.nc) files and metadata.
File_Decompression_Technique: WinZip or archive utility
Transfer_Size: 1580
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 download the zipped file of time-series data for San Pablo Bay shallows. The second link points to a landing page with the data, metadata, and a browse image for all three study sites. The third link points to the landing page for the entire data release, including links to pages of the various data files.
Fees: none
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: NetCDF
Format_Version_Number: MATLAB
Format_Specification: Data are in NetCDF formats.
Format_Information_Content: Downloadable zip file contains NetCDF (.nc) files and metadata.
File_Decompression_Technique: WinZip or archive utility
Transfer_Size: 128.8
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 download the zipped file of time-series data for San Pablo Bay channel. The second link points to a landing page with the data, metadata, and a browse image for all three study sites. The third link points to the landing page for the entire data release, including links to pages of the various data files.
Fees: none
Technical_Prerequisites:
The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip or other archive utilities. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing a NetCDF file. These data can be viewed with the NOAA netCDF file viewer, ncBrowse, which can be downloaded from the internet at https://www.pmel.noaa.gov/epic/java/ncBrowse.
Metadata_Reference_Information:
Metadata_Date: 20210915
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: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: United States
Contact_Voice_Telephone: 831-427-7520
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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