Joanne C. T. Ferreira Daniel J. Nowacki 20240711 CSV format tabular data data release DOI:10.5066/P15AORBR Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P15AORBR Joanne C. T. Ferreira Daniel J. Nowacki SeanPaul M. La Selle 2024 data release DOI:10.5066/P15AORBR Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey Suggested Citation: Ferreira, J.C.T., Nowacki, D.J., and La Selle, S.M., 2024, Sediment core data collected from Cargill Marsh, South San Francisco Bay, California during field activities 2022-643-FA and 2023-681-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P15AORBR. https://doi.org/10.5066/P15AORBR This dataset presents core information such as core IDs, core lengths, depth intervals, and locations from sediment cores collected from Cargill Marsh, South San Francisco Bay, California on June 21, 2022, and December 14, 2023. The cores were collected with hand driven push cores to assess sediment accumulation on the marsh. These cores were collected to measure sediment accumulation as part of a study to quantify sediment fluxes and changes in marsh morphology on marshes in southern San Francisco Bay. Cores were collected, analyzed, and archived by USGS, Pacific Coastal and Marine Science Center. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Information about the data collection field activities can be found at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2022-643-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2023-681-FA 20220621 20231214 Ground conditions at time data were collected Complete None planned -122.13863 -122.13845 37.59074 37.58864 USGS Metadata Identifier USGS:a9b56624-a568-4d0d-994f-c89943c6fdd0 ISO 19115 Topic Category oceans geoscientificInformation USGS Thesaurus core analysis ocean processes sediment transport geospatial datasets Data Categories for Marine Planning substrate Marine Realms Information Bank (MRIB) keywords sediment None U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC Department of the Interior DOI field activity number 2022-643-FA field activity number 2023-681-FA Geographic Names Information System (GNIS) Alameda County San Francisco Bay State of California None Cargill Marsh Whale's Tail marsh Whale's Tail South marsh Eden Landing Ecological Reserve No access constraints. Please see 'Distribution Info' for details. 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. PCMSC Science Data Coordinator U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Joanne C. T. Ferreira Daniel J. Nowacki 2024 CT scan TIFF files for these sediment cores have been published in a separate section in this data release https://doi.org/10.5066/P15AORBR Joanne C. T. Ferreira Daniel J. Nowacki 2024 Photograph TIFF files for these sediment cores have been published in a separate section in this data release https://doi.org/10.5066/P15AORBR Joanne C. T. Ferreira Jessica R. Lacy Samantha C. McGill Lukas T. WinklerPrins Daniel J. Nowacki Andrew W. Stevens Angela C. Tan 2023 https://doi.org/10.5066/P972R6AW Quality control of attribute accuracy was conducted during field data collection and processing workflows. No formal attribute accuracy tests were conducted. No formal logical consistency tests were conducted. 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. A RTK GPS system was used for obtaining latitude and longitude point locations during the field activity with centimeter accuracy. As each core site required two adjacent cores to complete the 90 cm length, the horizontal position accuracy of 50 cm is reasonable. Core depth values are relative to the top of sediment surface at the time of core collection. Coring-induced compaction, if any, was not determined. No formal vertical accuracy tests were conducted. Sediment cores were collected from the marsh environment on Cargill Marsh in Eden Landing Environmental Reserve, Alameda County, California using a Russian corer (a hand-held, side-filling peat auger). At each core site, two adjacent cores holes were used to sample sediment in 50 cm intervals with a 10 cm overlapping section resulting in undisturbed sediment cores of 90 cm length. Cores were transported back to the USGS Pacific Coastal and Marine Science Center for imaging, and subsequently sectioned in two cm samples for Cesium-137 analyses. Not all segments of the cores were analyzed. 2023 Point Point 6 0.00001 0.00001 Decimal degrees WGS_1984 WGS_1984 6378137.0 298.2572236 Local surface 1.0 centimeters Attribute values cargill_cores.csv Comma separated value text file with name, location, and length/depth information for each core section, and an inventory of CT and linescan files. Producer defined core_id The unique identifier for a core site. Producer Defined Identifier for the type of core (for example, CAR for Cargill Marsh, 22 or 23 for the year of collection, -RC for Russian corer) followed by a unique number for the core site. core_segment_depths_cm Depth at top of core to depth at bottom of core section relative to the surface. Producer Defined 0-50 40-90 cm elevation_m Elevation of the marsh surface in meters with reference to NAVD88 Producer Defined 1.717 1.908 m latitude Latitude of core in decimal degrees, North RTK GPS 37.58864 37.59074 decimal degrees longitude Longitude of core in decimal degrees, East RTK GPS -122.13863 -122.13845 decimal degrees date_collected Date of core collection in mm/dd/yyyy format in UTC. Producer defined 06/21/2022 12/14/2023 date ct_scan_filename Filename of associated TIFF file of CT image of core section. Producer defined Filenames start with the FA number (2022_643_FA or 2023-681-FA followed by the core id, and section number, and end with .TIF file extension. photo_filename Filename of associated TIFF file of core section photograph. Producer defined Filenames start with the core id and section number followed by '_001_01' and end with .tif file extension. The first line of the csv file is a header line. Producer defined U.S. Geological Survey - CMGDS mailing address

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Santa Cruz CA Santa Cruz United States 831-427-4747 pcmsc_data@usgs.gov Core information is provided in a comma separated value (CSV) text file (cargill_cores.csv). 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. comma-delimited text 2024 Comma separated value (csv) text file of core information. none 0.001 https://doi.org/10.5066/P15AORBR Data can be downloaded using the Network_Resource_Name link and scrolling to cargill_cores.csv in the Sampling Data section. None. CSV files can be viewed with any standard table editing software (for example, excel, numbers). 20240711 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998