Metadata: Identification_Information: Citation: Citation_Information: Originator: Rachel M. Allen Originator: Samantha C. McGill Originator: Joanne C. T. Ferreira Originator: Jessica R. Lacy Publication_Date: 20211015 Title: Hydrodynamic timeseries data from south San Francisco Bay, California, summer 2020 Geospatial_Data_Presentation_Form: NetCDF files Series_Information: Series_Name: data release Issue_Identification: doi:10.5066/P99Q4CHM 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/P99Q4CHM Online_Linkage: https://www.sciencebase.gov/catalog/item/60283d79d34eb120311398cd Larger_Work_Citation: Citation_Information: Originator: Rachel M. Allen Originator: Samantha C. McGill Originator: Joanne C. T. Ferreira Originator: Jessica R. Lacy Originator: Angela C. Tan Publication_Date: 20210301 Title: Hydrodynamic, sediment transport, and sediment flocculation data from south San Francisco Bay, California, summer 2020 Series_Information: Series_Name: data release Issue_Identification: doi:10.5066/P99Q4CHM 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/P99Q4CHM Description: Abstract: Hydrodynamic and sediment transport time-series data, including water depth, velocity, turbidity, suspended particle size, conductivity, and temperature, were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at two locations in south San Francisco Bay. Data were collected in the channel (one platform) and in the shallows (three co-located platforms) for 2 weeks in July 2020. Data files are grouped by site (channel or shallows). Each site contained instrumentation to collect the data listed, with slight instrument and setup variations between the two sites due to logistics. 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 control sediment flocculation, specifically waves, tidal currents, and turbulence, as well as suspended-sediment concentration in the water column. They were collected as part of a San Francisco Estuary Initute (SFEI)-funded study performed collaboratively with the USGS California Water Science Center. 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=2020-621-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: 20200716 Ending_Date: 20200730 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: -122.1788 East_Bounding_Coordinate: -122.1669 North_Bounding_Coordinate: 37.5490 South_Bounding_Coordinate: 37.5413 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:602a99fad34eb1203113b18a 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_Keyword: suspended material (water) Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: State of California 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: https://www.sciencebase.gov/catalog/file/get/602a99fad34eb1203113b18a?name=CSF20_SiteMap.jpg&allowOpen=true Browse_Graphic_File_Description: Map of study area showing instrument deployment locations in south San Francisco Bay. Browse_Graphic_File_Type: JPEG 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 datafiles 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: One platform was deployed in the channel, and it contained the following instruments: Nortek Signature1000 acoustic doppler current profiler, EofE Ultrasonics Altimeter, RBR CTD, Nortek single point acoustic doppler velocimeter with a Seapoint turbidity meter, Sequoia Scientific Laser In-situ scattering and transmissometry (LISST). Process_Date: 20200716 Process_Step: Process_Description: Three platforms were deployed in the shallows, and together contained the following instruments: RDInstrument ADCP, RBR DUO bursting pressure sensor, Nortek single point acoustic doppler velocimeter (no turbidity meter), Sequoia Scientific Laser In-situ scattering and transmissometry (LISST), RBR Virtuoso with Seapoint turbidity meter, EofE Ultrasonics Altimeter, RBR CTD. Process_Date: 20200716 Process_Step: Process_Description: Instruments were retrieved from both the channel and shallows sites. The data from the retrieved instruments were post-processed using manufacturers software packages and USGS matlab codes. Process_Date: 20200730 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. In a few datasets with persistent vegetative 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, as light passing through the sample volume is unlikely to be scattered by more than one particle. Process_Date: 20210301 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 'CSF' 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 alphanumeric code for the platform name (CHT, SC1, 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, Nortek's Acoustic Doppler Velocimeter; alt, EofE Ultrasonics' altimeter; wh, RDInstrument's acoustic doppler current profile current data; pt, RBR's bursting pressure sensor with temperature; ctd, RBR's CTD; Tu, RBR's Virtuoso turbidity logger; ls, Sequoia Scientific's LISST; sig, Nortek's Signature1000 ADCP). There are an additional 2-4 characters for instruments that collect in a bursting pattern to indicate whether the file includes the raw burst data (-b), the statistics of the burst (-s), or the wave data (-wvs). This indicator is omitted if there is no bursting pattern. Process_Date: 20210301 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Data were collected continuously at survey locations. 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 and are 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: 2910 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/602a99fad34eb1203113b18a?name=CSF20_Channel_Time_Series.zip Network_Resource_Name: https://www.sciencebase.gov/catalog/item/602a99fad34eb1203113b18a Network_Resource_Name: https://doi.org/10.5066/P99Q4CHM 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 the channel station (CHT). The second link points to a landing page with 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: 899.8 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/602a99fad34eb1203113b18a?name=CSF20_Shallows_Time_Series.zip Network_Resource_Name: https://www.sciencebase.gov/catalog/item/602a99fad34eb1203113b18a Network_Resource_Name: https://doi.org/10.5066/P99Q4CHM 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 the three shallows stations. The second link points to a landing page with 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 utilites. 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: 20211015 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