Metadata: Identification_Information: Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: Amy C. Foxgrover Originator: Bruce E. Jaffe Publication_Date: 20240709 Title: Bathymetric change of Suisun Bay, California: 1988 to 2016 Geospatial_Data_Presentation_Form: Raster Digital Data Set Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1332UUW 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/P1332UUW Online_Linkage: https://www.sciencebase.gov/catalog/item/665a1b6bd34ef3137d36a71c Larger_Work_Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: Bruce E. Jaffe Originator: Amy C. Foxgrover Publication_Date: 2024 Title: Bathymetric change analyses in San Francisco Bay, California, from 1971 to 2020 Edition: 2.0 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1332UUW 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/P1332UUW Online_Linkage: https://www.sciencebase.gov/catalog/item/665a1ad3d34ef3137d36a6f5 Description: Abstract: This 25-m-resolution surface presents bathymetric change of Suisun Bay, California, from 1988 to 2016. This surface compares a 1-m-resolution digital elevation model (DEM) of the northern portion of San Francisco Bay (Fregoso and others, 2020), comprised of bathymetry data in the Suisun region from the time period referred to as the 2010s because the majority of the surveys were in that decade, to a 25-m-resolution bathymetric DEM of Suisun Bay comprised of historic surveys from 1988 to 1990 (referred to as the 1990s because the majority of the surveys were in that decade). Prior to creating this change surface, the 1-m-resolution 2010s DEM was resampled to match the 25-m-resolution 1990s DEM, and the 1990s DEM corrected for grid interpolation bias and vertically referenced to the same tidal epoch as the 2010s DEM. The adjusted DEMs were then differenced to reveal amounts of sediment deposition and erosion that occurred between the surveys. Purpose: These data are part of a sediment change analysis project of San Francisco Bay to understand current patterns of sediment gains and loss in efforts to help develop a sediment budget. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems (GIS) or other software to identify changes in elevations between the two time periods. These data are not intended to be used for navigational purposes. Supplemental_Information: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1988 Ending_Date: 2016 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.267447 East_Bounding_Coordinate: -121.863258 North_Bounding_Coordinate: 38.135469 South_Bounding_Coordinate: 38.015793 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: digital elevation models Theme_Keyword: coastal processes Theme_Keyword: bathymetry Theme_Keyword: topography Theme_Keyword: geographic information systems Theme_Keyword: geospatial datasets Theme_Keyword: single-beam echo sounder Theme_Keyword: multibeam sonar Theme_Keyword: GPS measurement Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: geographic information systems (GIS) Theme_Keyword: single-beam echo sounder Theme_Keyword: multibeam echo sounder Theme_Keyword: topographic mapping Theme_Keyword: Global Positioning System (GPS) observations Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme_Keyword: inlandWaters Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:665a1b6bd34ef3137d36a71c Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: San Francisco Bay Place_Keyword: Suisun 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. 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 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/665a1b6bd34ef3137d36a71c?name=SuisunBay_Bathychange_1988_2016.jpg&allowOpen=true Browse_Graphic_File_Description: Map showing bathymetric change of Suisun Bay, from 1988 to 2016, in meters. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Version 6.2 (Build 9200); Esri ArcGIS 10.8.1.14362 Cross_Reference: Citation_Information: Originator: Environmental Systems Research Institute, Inc (ESRI) Publication_Date: 2021 Title: Aggregate (Spatial Analyst) Online_Linkage: https://desktop.arcgis.com/en/arcmap/latest/tools/spatial-analyst-toolbox/aggregate.htm Cross_Reference: Citation_Information: Originator: Karen Cappiella Originator: Chris Malzone Originator: Richard Smith Originator: Bruce E. Jaffe Publication_Date: 1999 Title: Sedimentation and bathymetry changes in Suisun Bay: 1867-1990 Online_Linkage: https://doi.org/10.3133/ofr99563 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. Logical_Consistency_Report: No formal logical consistency tests were conducted. Completeness_Report: Data are 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: Data are as accurate as source data used. Users are advised to read the metadata record for the sources for horizontal accuracy details. No further accuracy tests were conducted. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Data are as accurate as source data used. Users are advised to read the metadata record for the sources for vertical accuracy details. No further accuracy tests were conducted. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: Bruce E. Jaffe Originator: Amy C. Foxgrover Publication_Date: 2020 Title: Digital elevation model (DEM) of northern San Francisco Bay, California, created using bathymetry data collected between 1999 and 2016 (MLLW) Geospatial_Data_Presentation_Form: Raster Digital Data Set 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/P9TJTS8M Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1999 Ending_Date: 2016 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2010s DEMS Source_Contribution: 2010s DEM of northern San Francisco Bay (MLLW) used for comparison Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA) Publication_Date: 1989 Title: H10264 Geospatial_Data_Presentation_Form: xyz Publication_Information: Publication_Place: online Publisher: NOAA Online_Linkage: https://www.ngdc.noaa.gov/nos/H10001-H12000/H10264.html Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1988 Ending_Date: 1988 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H10264 Source_Contribution: data for 1990s bathymetric DEM for comparison Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA) Publication_Date: 1990 Title: H10283 Geospatial_Data_Presentation_Form: xyz Publication_Information: Publication_Place: online Publisher: NOAA Online_Linkage: https://www.ngdc.noaa.gov/nos/H10001-H12000/H10283.html Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1988 Ending_Date: 1989 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H10283 Source_Contribution: data for 1990s bathymetric DEM for comparison Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA) Publication_Date: 1990 Title: H10306 Geospatial_Data_Presentation_Form: xyz Publication_Information: Publication_Place: online Publisher: NOAA Online_Linkage: https://www.ngdc.noaa.gov/nos/H10001-H12000/H10306.html Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1989 Ending_Date: 1989 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H10306 Source_Contribution: data for 1990s bathymetric DEM for comparison Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA) Publication_Date: 1990 Title: H10315 Geospatial_Data_Presentation_Form: xyz Publication_Information: Publication_Place: online Publisher: NOAA Online_Linkage: https://www.ngdc.noaa.gov/nos/H10001-H12000/H10315.html Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1989 Ending_Date: 1989 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H10315 Source_Contribution: data for 1990s bathymetric DEM for comparison Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA) Publication_Date: 1990 Title: H10317 Geospatial_Data_Presentation_Form: xyz Publication_Information: Publication_Place: online Publisher: NOAA Online_Linkage: https://www.ngdc.noaa.gov/nos/H10001-H12000/H10317.html Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1989 Ending_Date: 1990 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H10317 Source_Contribution: data for 1990s bathymetric DEM for comparison Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA) Publication_Date: 1991 Title: H10342 Geospatial_Data_Presentation_Form: xyz Publication_Information: Publication_Place: online Publisher: NOAA Online_Linkage: https://www.ngdc.noaa.gov/nos/H10001-H12000/H10342.html Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1990 Ending_Date: 1991 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H10342 Source_Contribution: data for 1990s bathymetric DEM for comparison Process_Step: Process_Description: Using ESRI’s Aggregate tool (Environmental Systems Research Institute, Inc., 2021), the 2010s DEM was converted to 25-m resolution. Source_Used_Citation_Abbreviation: 2010s DEM Process_Date: 2022 Source_Produced_Citation_Abbreviation: 2010s 25-m DEM Process_Step: Process_Description: 1990s Suisun Bay bathymetric DEM was constructed using steps from Cappiella and others (1999) Source_Used_Citation_Abbreviation: H10264 Source_Used_Citation_Abbreviation: H10283 Source_Used_Citation_Abbreviation: H10306 Source_Used_Citation_Abbreviation: H10315 Source_Used_Citation_Abbreviation: H10317 Source_Used_Citation_Abbreviation: H10342 Process_Date: 2022 Source_Produced_Citation_Abbreviation: 1990s DEM Process_Step: Process_Description: The 1990s DEM was adjusted for changes in tidal epoch and grid bias by subtracting 7 cm for tidal change and subtracting 6.4 cm for bias adjustment. The resulting grid was snapped to the 2010s 25-m DEM. Source_Used_Citation_Abbreviation: 1990s DEM Source_Used_Citation_Abbreviation: 2010s 25-m DEM Process_Date: 2022 Source_Produced_Citation_Abbreviation: 1990s ADJ DEM Process_Step: Process_Description: The 1990s adjusted DEM was subtracted from the 25-m 2010s DEM to determine bathymetric changes in the intervening decades. Source_Used_Citation_Abbreviation: 1990s ADJ DEM Source_Used_Citation_Abbreviation: 2010s 25-m DEM Process_Date: 2022 Source_Produced_Citation_Abbreviation: 1990s-2010s Chg Process_Step: Process_Description: Edits were made to the GeoTIFF’s internal projection assignment and to the altitude datum listed in the metadata. Although the horizontal datum and projection information were correctly defined as NAD83(2011) / UTM Zone 10 within the metadata files, the Geographic Coordinate System (GCS) and associated DATUM definition description stored internally, within the GeoTIFF itself, was incorrect. The originally assigned GCS was corrected from GCS_GRS_1980 to NAD 1983 (2011) and the projected coordinate system (PCS) from GRS_1980_UTM_Zone_10N to NAD 1983 (2011) UTM Zone 10N. Please note that the coordinate values and position of the GeoTIFF pixels did not change, only the projection definition. Within the metadata, the Altitude Datum Name, previously listed as Mean Lower Low Water (MLLW), was corrected. Although the input bathymetric DEMs are both referenced to MLLW, the change grid represents relative change between the two time periods and is not directly referenced to MLLW. This clarification was also applied to the Entity Type and Attribute Definition fields. The last two sentences of the abstract were edited to clarify that the 1990s DEM was corrected for both grid interpolation bias and a tidal datum adjustment prior to calculating the change DEM. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version. (afoxgrover@usgs.gov) Source_Used_Citation_Abbreviation: 1990s-2010s Chg Process_Date: 20240522 Source_Produced_Citation_Abbreviation: 1990s-2010s Prj Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 517 Column_Count: 1413 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 25.0 Ordinate_Resolution: 25.0 Planar_Distance_Units: Meter Geodetic_Model: Horizontal_Datum_Name: D_NAD_1983_2011 Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: N/A, change is relative to adjusted 1980s DEM Altitude_Resolution: 0.01 Altitude_Distance_Units: meters Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: floating point Entity_Type_Definition: GeoTiff of bathymetric change between the 1990s to 2010s digital elevation models (DEMs), Z-value in meters. Cells with values of -3.4028231e+38 indicate no data. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Value Attribute_Definition: Bathymetric change from 1990s to 2010s. Negative values indicate sediment erosion and positive values indicate sediment deposition. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10.920537948608 Range_Domain_Maximum: 15.316488265991 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.01 Overview_Description: Entity_and_Attribute_Overview: Bathymetric change in meters from the 1990s to the 2010s in Suisun Bay, California. Entity_and_Attribute_Detail_Citation: The entity and attribute information were 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: US Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available as a GeoTiff (SuisunBay_BathyChange_1988_2016.tif) with accompanying world file (.tfw) and 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: geoTIFF Format_Version_Number: ArcGIS 10.8.1 Format_Information_Content: Zip file contains a GeoTiff version of the change surface with associated tif world file (.tfw) and a browse graphic. File_Decompression_Technique: Data can be unpacked using WinZip, or other zip decompression software. Transfer_Size: 3.16 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/665a1b6bd34ef3137d36a71c Network_Resource_Name: https://www.sciencebase.gov/catalog/item/665a1b6bd34ef3137d36a71c Network_Resource_Name: https://doi.org/10.5066/P1332UUW Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link begins a direct download of the GeoTIFF, including a browse graphic. The second link points to the landing page for information about the bathymetric change DEM for the Suisun Bay portion of San Francisco Bay. The third link points to the landing page for the entire data release. Fees: None Technical_Prerequisites: These data can be viewed with GIS software. Metadata_Reference_Information: Metadata_Date: 20240709 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