Metadata: Identification_Information: Citation: Citation_Information: Originator: Samantha C. McGill Publication_Date: 20240806 Title: CTD profiles from a tidal creek in Corte Madera Marsh, Northern San Francisco Bay, California, 2022-2023 Geospatial_Data_Presentation_Form: NetCDF files Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1XZFGCX 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/P1XZFGCX Larger_Work_Citation: Citation_Information: Originator: Samantha C. McGill Originator: Jessica R. Lacy Originator: Joanne C.T. Ferreira Originator: Daniel J. Nowacki Originator: Andrew W. Stevens Originator: Angela C. Tan Publication_Date: 2024 Title: Hydrodynamic and sediment transport data from two marshes and adjacent shallows in Northern San Francisco Bay, California 2022-2023 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1XZFGCX Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: McGill, S.C., Lacy, J.R., Ferreira, J.C.T., Nowacki, D.J., Stevens, A.W., and Tan, A.C., 2024, Hydrodynamic and sediment transport data from two marshes and adjacent shallows in Northern San Francisco Bay, California 2022-2023: U.S. Geological Survey data release, https://doi.org/10.5066/P1XZFGCX. Online_Linkage: https://doi.org/10.5066/P1XZFGCX Description: Abstract: CTD profiles were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center to measure the physical characteristics of Corte Madera tidal creek over the course of a tidal cycle during one of the largest spring tides in both Winter and Summer. Conductivity, temperature, and pressure data were collected, as well as suspended-sediment concentration in the water column Each profile was collected from surface to bed. Profiles were collected on 4 days: August 8 and 9 of 2022 and January 19 and 20 of 2023. Data files are grouped by season (summer or winter). Users are advised to assess data quality carefully. Purpose: These data were collected as part of a study with the goal to produce information useful for prioritizing marsh restoration sites, assessing restoration actions, and understanding mechanisms of sediment delivery to marshes. These data are intended for researchers, students, policy makers, and the general public. Supplemental_Information: Information about the data collection field activities can be found at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2022-619-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-603-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: 20220809 Ending_Date: 20230220 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: -122.5058680 East_Bounding_Coordinate: -122.5050730 North_Bounding_Coordinate: 37.9307330 South_Bounding_Coordinate: 37.9302660 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:cad4bfcb-82a1-4c39-854f-d1a2c3f47148 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: San Francisco Bay Place_Keyword: Marin County Place_Keyword: State of California Place: Place_Keyword_Thesaurus: None Place_Keyword: Corte Madera marsh Place_Keyword: Corte Madera Bay 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 Browse_Graphic: Browse_Graphic_File_Name: NBM_CTD_kayak.jpg Browse_Graphic_File_Description: Image of kayaker moving the kayak into position where the CTD profile will be collected. The CTD is shown on the kayak, behind the kayaker. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Python 3.11.7 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: 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 GPS instrumentation is less than 1 m, however position information was recorded at the water surface prior to each profile. Displacement down current while lowering the CTD was severe during periods of high flow. 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. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: No formal assessment of vertical accuracy was performed. Manufacturer 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 in a tidal creek in Corte Madera Marsh, with an RBR maestro multi-channel logger. Profiles were collected on 4 days: August 8 and 9 of 2022 and January 19 and 20 of 2023. Data from water samples collected during this activity are available as a separate download. Process_Date: 20230120 Process_Step: Process_Description: 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 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). 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. Data not part of this study were removed during post-processing. Minor cleaning of the data was performed, as there were some instances when the CTD hit the creek bed and had mud obscuring sensors during the upcast. Users are still advised to assess data quality carefully. Process_Date: 20240716 Process_Step: Process_Description: Files are named with a convention that uses a multi-element alphanumeric code delimited by underscores. The first element for this dataset represents the projects name and the year it started (e.g. 'NBM22' for North Bay Marshes 2022); the second element indicates the type of data (e.g., CTD), 'a' or 'b' indicating the season, (e.g. a respresents Summer, b represents Winter); the next element 'prof' indicates the data were collected in a profiling manner; the final element ('-cal') indicates the data has been calibrated and corrected for observed atmospheric pressure variations. Process_Date: 20240716 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: 298.257223563 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 - 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 two (2) different files, each containing multiple profiling days. The first three letters refer to the project name 'NBM' (North Bay Marshes); '22' refers to the year the project started (2022); An 'a' or 'b' indicates the season where 'a' is Summer and 'b' is Winter; 'prof' indicates the data are profiles; and '-cal' indicates all calibrations including atmospheric pressure correction have been applied to the data. 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: Python 3.11.7 Format_Information_Content: Files contains CTD profile data in NetCDF CF-1.8 format File_Decompression_Technique: Netcdf CF-1.8 format Transfer_Size: 0.3028 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P1XZFGCX Access_Instructions: CTD data (NBM22CTDaprof-cal.nc) may be accessed and downloaded using the Network_Resource_Name link and scrolling down to the Environmental Data section Digital_Form: Digital_Transfer_Information: Format_Name: NetCDF Format_Version_Number: Python 3.11.7 Format_Information_Content: File contains CTD profile data in NetCDF format File_Decompression_Technique: zip archive Transfer_Size: 0.3212 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P1XZFGCX Access_Instructions: CTD data (NBM22CTDbprof-cal.nc) may be accessed and downloaded using the Network_Resource_Name link and scrolling down to the Environmental Data section Fees: None Metadata_Reference_Information: Metadata_Date: 20240806 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