Metadata: Identification_Information: Citation: Citation_Information: Originator: Joanne C. T. Ferreira Originator: Daniel J. Nowacki Publication_Date: 20240807 Title: Conductivity-Temperature-Depth (CTD) profile data from transects of Whales Tail Marsh tidal creeks, South San Francisco Bay, California during 2021 and 2022 Geospatial_Data_Presentation_Form: netCDF Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P17ZUBYC 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/P17ZUBYC Larger_Work_Citation: Citation_Information: Originator: Joanne C. T. Ferreira Originator: Daniel J. Nowacki Originator: Andrew W. Stevens Publication_Date: 2024 Title: Oceanographic, water-quality, bathymetric, and discharge data from Whales Tail Marsh tidal creeks, South San Francisco Bay, California, 2021-2023 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P17ZUBYC Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Ferreira, J.C.T., Nowacki, D.J., and Stevens, A.S., 2024, Oceanographic, water-quality, bathymetric, and discharge data from Whales Tail Marsh tidal creeks, South San Francisco Bay, California, 2021-2023: U.S. Geological Survey data release, https://doi.org/10.5066/P17ZUBYC. Online_Linkage: https://doi.org/10.5066/P17ZUBYC Description: Abstract: Spatial surveys of water column physical properties were acquired with a conductivity-temperature-depth (CTD) profiler for five (5) surveys in summer 2021 and three (3) surveys in winter 2021-2022 during king tides along transects of tidal creeks in the Whales Tail Marsh, South San Francisco Bay, California. The data are provided in netCDF files. Purpose: Conductivity, temperature, depth, and suspended-sediment concentration data were collected to measure the physical characteristics of tidal creeks during periods of maximum inundation of the marsh and the resulting high flow velocities. These data are part of a study to quantify sediment fluxes and changes in marsh morphology at Whales Tail Marsh in southern San Francisco Bay. These data are intended for researchers, students, policy makers, and the general public. Supplemental_Information: Information about the data collection field activities are available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2021-627-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2021-660-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: 20210615 Ending_Date: 20220104 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: -122.1419 East_Bounding_Coordinate: -122.1412 North_Bounding_Coordinate: 37.5865 South_Bounding_Coordinate: 37.5836 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:6c0e2064-f38f-4acb-b044-2726332677e7 Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: WATER TEMPERATURE Theme_Keyword: CONDUCTIVITY Theme_Keyword: SALINITY Theme_Keyword: DENSITY Theme_Keyword: CTD Theme_Keyword: Water pressure Theme_Keyword: Water depth Theme_Keyword: SUSPENDED SOLIDS Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Water Column Features Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: time series datasets Theme_Keyword: marine water quality Theme_Keyword: CTD measurement Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords 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: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: Oceans Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Alameda County Place_Keyword: San Francisco Bay Place_Keyword: State of California Place: Place_Keyword_Thesaurus: None Place_Keyword: Cargill Marsh Place_Keyword: Whales Tail Marsh Place_Keyword: Whales Tail South Marsh Place_Keyword: Eden Landing Ecological Reserve Access_Constraints: no access constraints 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: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Cross_Reference: Citation_Information: Originator: Joanne C. T. Ferreira Originator: Jessica R. Lacy Originator: Samantha C. McGill Originator: Lukas T. WinklerPrins Originator: Daniel J. Nowacki Originator: Andrew W. Stevens Originator: Angela C. Tan Publication_Date: 2023 Title: Hydrodynamic and sediment transport data from Whale's Tail South marsh and adjacent waters in South San Francisco Bay, California 2021-2022 Other_Citation_Details: Water samples collected during the transecting data collection are published in this data release. Online_Linkage: https://doi.org/10.5066/P972R6AW Cross_Reference: Citation_Information: Originator: Joanne C. T. Ferreira Originator: Daniel J. Nowacki Originator: SeanPaul M. La Selle Publication_Date: 2024 Title: Sediment core data collected from Cargill Marsh, South San Francisco Bay, California during field activities 2022-643-FA and 2023-681-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P15AORBR Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P15AORBR Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. The RBR Maestro CTD has the following accuracies: a conductivity range of 0 to 85 mS/cm with accuracy 0.003 mS/cm, a temperature range of -5 to 35 degrees Celsius with accuracy of 0.002 degrees Celsius, a pressure range of 0 - 100 dbar with accuracy of 0.05 dbar. Logical_Consistency_Report: Data fall within expected ranges. We recommend users plot the downcast (from the beginning of a cast to the maximum value of P_1ac) to view the cleanest data. In some cases, multiple profiles were taken at the edges of the tidal creek as well as mid-channel. Some of these profiles are extremely shallow and may be considered as a data point rather than a profile during those conditions. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. 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: Horizontal accuracy derived from Garmin GPSmap 78sc instrumentation is 3 m with a resolution of 0.3 m. As position information was recorded at the water surface prior to each profile, some change in position results from non-coincident measurement from a moving platform. In addition, displacement down current while lowering the CTD was severe during periods of high flow and, in extreme cases, it is possible the profile did not reach the target of 0.5 m above bottom. The primary value of these data is to identify edge versus mid-channel locations as tidal creek width varies, as well as confirmation of the particular tidal creek observed. Where GPS location data is not available a value of NaN has been filled in the data. As all measurements within a file are on the same tidal creek transect location, a general value for the location may be inferred. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: RBR Maestro CTD specification of 0.05 meter accuracy with better than 0.001 meter resolution. Lineage: Process_Step: Process_Description: Conductivity, salinity, optical backscatter and pressure (CTD) data were collected with an RBRmaestro multi-channel logger at site TCE (Tidal Creek East) intermittently over the period from June 17,2021 to July 28, 2021. The instrument was hand lowered from a kayak at various locations across the tidal creek after ADCP transect data collection was completed. Data from water samples collected during this activity have been previously published. See cross reference. Process_Date: 20210728 Process_Step: Process_Description: Conductivity, salinity, optical backscatter and pressure (CTD) data were collected with an RBRmaestro multi-channel logger on tidal creek site TCM (Tidal Creek Main channel) on December 3-4,2021 and on tidal creek site TCE on December 6-7, 2021. The instrument was hand lowered from a kayak at various locations across the tidal creek after ADCP transect data collection was completed. Data from water samples collected during this activity have been previously published. See cross reference. Process_Date: 20211207 Process_Step: Process_Description: Conductivity, salinity, optical backscatter, and pressure (CTD) data were collected with an RBRmaestro multi-channel logger at site TCM intermittently over the period from January 3-4,2022. The instrument was hand lowered from a kayak at various locations across the tidal creek after ADCP transect data collection was completed. Data from water samples collected during this activity have been previously published. See cross reference. Process_Date: 20220104 Process_Step: Process_Description: Data were collected in a single file over multiple days for each data collection interval. Data not part of this study were removed during post-processing. The raw data files downloaded from the CTD were processed and converted to netCDF using the stglib python library, a package of code to process data consistent with procedures of the USGS Coastal/Marine Hazards and Resources Program. In stglib, attributes conforming to Climate and Forecast (CF) Conventions version 1.8 were added. All times are in Coordinated Universal Time (UTC). Corrected pressure data (P_1ac) were calculated by finding an offset with local atmospheric pressure readings when the pressure sensor was reading in air just prior to deployment. Pressure data were corrected using the offset and a time-series of local atmospheric pressure from NOAA station 9414523 Redwood City, CA, over the course of the deployment to remove the atmospheric contribution to the deployed pressure data. The resulting corrected pressure variable is the pressure due to seawater (standard_name "sea_water_pressure_due_to_seawater" in netCDF files). Process_Date: 20240614 Process_Step: Process_Description: Data quality assurance and quality control (QAQC) was performed by inspecting all variables and replacing spurious values with NaN. Details of which portions of data were flagged and replaced are available in the metadata in each netCDF file and information about the individual QAQC trimming functions are available in the stglib documentation (https://stglib.readthedocs.io/en/latest/) in the "Instrument configuration file" section. Files are named with a convention that uses a multi-element alphanumeric code delimited by underscores. The first element for this dataset represents location and time of year (e.g. WTS21 or WTW21 for Whales Tail Summer 2021 or Winter 2021); the second element (e.g. CTDaprof) indicates the type of data (CTD), 'a' or 'b' indicating the first or second file of the time of year where more than one datafile was collected, and the type of data acquisition (e.g. prof indicates profiling rather than data collected at a fixed point); the suffix '-cal' indicates the data has been corrected for observed atmospheric pressure variations. Process_Date: 20240614 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: GPS location was taken with a handheld GPS immediately before each CTD profile. Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.2572236 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Local surface Depth_Resolution: 0.01 Depth_Distance_Units: meters Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates 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 - CMGDS 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: 1-831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Resource_Description: Downloadable data in netCDF format. There are three (3) different files, each containing multiple profiling days. The first two letters 'WT' refer to the location at the Whales Tail Marsh, the next letter refers to the season, 'S' for summer or 'W' for winter, '21' for the year 2021 at the start of the season, 'prof' indicates the data are profiles, and '-cal' indicates all calibrations including atmospheric pressure correction have been applied to the data. An 'a' or 'b' has been added to the winter filenames where 'a' is in December, 2021 and 'b' is in January, 2022. 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: netCDF-4, CF-1.8 Format_Information_Content: Files contains CTD profile data in netCDF following Climate and Forecast (CF) metadata convention 1.8 File_Decompression_Technique: Compressed file of entire dataset Transfer_Size: 1.280 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P17ZUBYC Access_Instructions: Data can be downloaded using the Network_Resource_Name link and scrolling to wt_ctd_profiles.zip in the Environmental Data section. Fees: None Metadata_Reference_Information: Metadata_Date: 20240807 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: 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