Metadata: Identification_Information: Citation: Citation_Information: Originator: Joanne C. T. Ferreira Originator: Daniel J. Nowacki Publication_Date: 20240711 Title: Cesium-137 isotope activity measured in sediment cores collected from Cargill Marsh, South San Francisco Bay, California during field activities 2022-643-FA and 2023-681-FA Geospatial_Data_Presentation_Form: CSV format tabular data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P15AORBR 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/P15AORBR Larger_Work_Citation: 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 Other_Citation_Details: 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. Online_Linkage: https://doi.org/10.5066/P15AORBR Description: Abstract: This dataset presents specific activities of cesium-137 in picoCuries per gram 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. Purpose: Laboratory measurements of cesium isotope concentrations in Cargill Marsh, South San Francisco Bay, California, to characterize marsh sedimentation history. Supplemental_Information: 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 Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20220621 Ending_Date: 20231214 Currentness_Reference: Ground conditions at time data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.13863 East_Bounding_Coordinate: -122.13845 North_Bounding_Coordinate: 37.59074 South_Bounding_Coordinate: 37.58864 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:8ef16080-2d6a-4656-979a-3720f6643670 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: core analysis Theme_Keyword: ocean processes Theme_Keyword: sediment transport Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: substrate Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: sediment 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: Department of the Interior Theme_Keyword: DOI Theme_Keyword: field activity number 2022-643-FA Theme_Keyword: field activity number 2023-681-FA Theme_Keyword: cesium-137 dating 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: Whale's Tail marsh Place_Keyword: Whale's Tail South marsh Place_Keyword: Eden Landing Ecological Reserve Access_Constraints: No access constraints. Please see 'Distribution Info' for details. 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 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: cargill_cores_overview.png Browse_Graphic_File_Description: Side by side comparison of depth referenced linescan images, color-enhanced CT images, and plots of Cesium-137 isotope activity for all cores. Browse_Graphic_File_Type: PNG Cross_Reference: Citation_Information: Originator: Joanne C. T. Ferreira Originator: Daniel J. Nowacki Publication_Date: 2024 Title: Information on sediment cores collected from Cargill Marsh, South San Francisco Bay, California during field activities 2022-643-FA and 2023-681-FA Other_Citation_Details: Core location information for these CS-137 measurements have been published in a separate section in this data release Online_Linkage: https://doi.org/10.5066/P15AORBR 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 Online_Linkage: https://doi.org/10.5066/P972R6AW Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Quality control of attribute accuracy was conducted during field data collection and processing workflows. No formal attribute accuracy tests were conducted. Logical_Consistency_Report: No formal logical consistency tests were conducted. 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: 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. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: 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. Lineage: Process_Step: Process_Description: 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. Process_Date: 2023 Process_Step: Process_Description: Radionuclide activities: Prior to quantification of short-lived radionuclide activities, bulk sediment was oven-dried at 60 degrees Celsius, ground by hand in a mortar and pestle and packed into 10 milliliter graduated polystyrene vials. Vials were capped and sealed to prevent gas exchange, then left to equilibrate for at least 21 days. Samples and reference materials with the same geometry were counted for 24 hours in a high purity, low background germanium (HPGe) well detector at the USGS PCMSC Radiochemistry Lab. Cesium-137 activities were counted at 661 kiloelectron volts (keV). Process_Date: 2023 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 64 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00001 Longitude_Resolution: 0.00001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: 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: 1.0 Depth_Distance_Units: centimeters Depth_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2022-643-FA_CAR-RC02.csv, 2023-681-FA_CAR-RC03.csv, 2023-681-FA_CAR-RC04.csv Entity_Type_Definition: Comma separated value text file with core identifier in the title containing location within the core of each 2 cm thick sample and the values of cesium 137 activity and uncertainty. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: top_depth_cm Attribute_Definition: depth at top of sample with reference to the surface Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 95 Attribute_Units_of_Measure: centimeters Attribute: Attribute_Label: bottom_depth_cm Attribute_Definition: depth at bottom of sample with reference to the surface Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 97 Attribute_Units_of_Measure: centimeters Attribute: Attribute_Label: Midpoint_depth_cm Attribute_Definition: midpoint depth of sample with reference to the surface Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 96 Attribute_Units_of_Measure: centimeters Attribute: Attribute_Label: 137Cs_activity_dpm_per_g Attribute_Definition: Activity of Cesium-137 Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 0.44 Attribute_Units_of_Measure: disintegrations per minute per gram (dpm per g) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: 137Cs_uncertainty_dpm_per_g Attribute_Definition: Measurement uncertainty of Cesium-137 activity at the 99.7 percent confidence interval estimated from: detector efficiency, background correction, and three standard deviations of the counting error; -9999 is assigned when no activity was measured. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 0.21 Attribute_Units_of_Measure: disintegrations per minute per gram (dpm per g) Attribute_Measurement_Resolution: 0.01 Overview_Description: Entity_and_Attribute_Overview: The first line of the csv file is a header line. Entity_and_Attribute_Detail_Citation: Producer defined Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - CMGDS Contact_Address: Address_Type: mailing address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: Santa Cruz Country: United States Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Resource_Description: Cesium 137 measurement information is provided in comma separated value (CSV) text files. File names correspond to the names of the cores within each scan. For example, ‘2022-643-FA_CAR-RC02_137Cs.csv' corresponds core segments collected during field activity 2022-643-FA,'CAR' refers to the Cargill Marsh, 'RC02' to the core location within the marsh and '_137Cs' indicates the file contains measurements of cesium 137 activity. Location information for these cores are available in a separate section of this data release. 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: comma-delimited text Format_Version_Date: 2024 Format_Information_Content: File contains table in .csv format File_Decompression_Technique: No compression applied Transfer_Size: 0.001 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P15AORBR Access_Instructions: Data can be downloaded using the Network_Resource_Name link and scrolling to files in the Environmental Data section. Fees: None. Technical_Prerequisites: CSV files can be viewed with any standard table editing software (for example, excel, numbers). Metadata_Reference_Information: Metadata_Date: 20240711 Metadata_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 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