Metadata: Identification_Information: Citation: Citation_Information: Originator: Andrew W. Stevens Originator: Joshua B. Logan Originator: Alexander G. Snyder Originator: Daniel J. Hoover Publication_Date: 2017 Title: Digital elevation models (DEMs) of northern Monterey Bay, California, March 2016 Geospatial_Data_Presentation_Form: Esri ARC/INFO ASCII GRID Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F76H4GCW 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/F76H4GCW Online_Linkage: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc Larger_Work_Citation: Citation_Information: Originator: Andrew W. Stevens Originator: Joshua B. Logan Originator: Alexander G. Snyder Originator: Daniel J. Hoover Originator: Patrick L. Barnard Originator: Jonathan A. Warrick Publication_Date: 2017 Title: Beach topography and nearshore bathymetry of northern Monterey Bay, California Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F76H4GCW Publication_Information: Publication_Place: Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F76H4GCW Description: Abstract: This part of the data release presents digital elevation models (DEMs) derived from bathymetry and topography data of northern Monterey Bay, California collected in March 2016. Bathymetry data were collected using two personal watercraft (PWCs), each equipped with single-beam echosounders and survey-grade global navigation satellite system (GNSS) receivers. Topography data were collected on foot with GNSS receivers mounted on backpacks and with an all-terrain vehicle (ATV) using a GNSS receiver mounted at a measured height above the ground. Additional topography data were collected with a terrestrial lidar scanner. DEM surfaces were produced from all available elevation data using linear interpolation. Purpose: Data were obtained to document changes in shoreline position and coastal morphology as they relate to episodic (storms), seasonal, interannual, and longer (for example, El Niño) processes. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify topographic and shallow-water bathymetric features. Supplemental_Information: Additional information about the field activities from which these data were derived are available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2016-627-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: 20160321 Ending_Date: 20160331 Currentness_Reference: ground condition at time data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.025723 East_Bounding_Coordinate: -121.787918 North_Bounding_Coordinate: 36.978828 South_Bounding_Coordinate: 36.806620 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:59f10ea5e4b0220bbd9c6bdc Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: bathymetry Theme_Keyword: bathymetry measurement Theme_Keyword: topography Theme_Keyword: GPS measurement Theme_Keyword: LIDAR Theme_Keyword: digital elevation models Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation 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: single-beam echo sounder Theme_Keyword: topographic mapping Theme_Keyword: Global Positioning System (GPS) observations Theme_Keyword: coastal sediment budget Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: Water Depth Theme_Keyword: GPS (Global Positioning System) Theme_Keyword: Echo Sounders Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Pacific Ocean Place_Keyword: Monterey Bay Place_Keyword: Monterey County Place_Keyword: Santa Cruz County Access_Constraints: none 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 navigational purposes. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Andrew W. Stevens Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical Address: 2885 Mission St. City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: 831-460-7424 Contact_Electronic_Mail_Address: astevens@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dems_overall.png&allowOpen=true Browse_Graphic_File_Description: image map showing overview of digital elevation models (DEMs) of northern Monterey Bay, color-coded to show elevation Browse_Graphic_File_Type: PNG Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dems_inset.png&allowOpen=true Browse_Graphic_File_Description: four zoomed-in image maps showing digital elevation models (DEMs) for (A) Santa Cruz, (B) Soquel Cove, (C) Manresa, and (D) Moss Landing areas of northern Monterey Bay, color-coded to show elevation Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Matlab version 9.2.0.556344 running on Microsoft Windows 7 Cross_Reference: Citation_Information: Originator: International Hydrographic Organization (IHO) Publication_Date: 2008 Title: IHO standards for hydrographic surveys (5th ed.) Geospatial_Data_Presentation_Form: comma-delimited text Publication_Information: Publication_Place: Monaco Publisher: International Hydrographic Bureau Special Publication 44, 28p. Online_Linkage: https://www.iho.int/iho_pubs/standard/S-44_5E.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Repeatability tests were conducted across different survey platforms, but no comparisons to "true" values were conducted. Logical_Consistency_Report: All data falls within expected ranges. 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: Digital elevation models (DEMs) are created by interpolating between elevation measurements as much as 500 meters apart, for this reason we cannot evaluate the accuracy of each point in a DEM, only the original data from which it is generated. The horizontal accuracy of the individual points was assessed based on the combined uncertainty of GNSS data points and terrestrial lidar data. Manufacturer-reported accuracy for the differentially corrected horizontal positions for the GNSS receivers used to collect the topographic and bathymetric measurements is 0.8 cm + 0.5 ppm. Baselines from the GNSS base station varied between 1.5 km and 29 km with a mean of 13 km, suggesting the average horizontal accuracy of survey platform positions to be about 1.5 cm. The average uncertainty in the horiontal coordinates of the terrestrial lidar data is esimated to be 7 cm. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Digital elevation models (DEMs) are created by interpolating between elevation measurements as much as 500 meters apart, for this reason we cannot evaluate the accuracy of each point in a DEM, only the original data from which it is generated. An average estimated vertical accuracy of 3 cm for the topographic GNSS backpack- and ATV-survey platforms was estimated by using the manufacturer reported vertical accuracy of 1.5 cm + 1 ppm for differentially corrected kinematic data. The vertical accuracy of the terrestrial lidar data was tested by comparing the final elevation values to concurrently collected topographic GNSS data. The RMS errors calculated for the vertical differences between these data and the point cloud data were typically found to be less than or equal to about 7 cm. Uncertainty in the bathymetry data is related the precision of the GNSS positioning and single-beam echosounders as well as unmeasured variability in the speed of sound used to compute depths from bathymetric soundings. Based on analysis of available speed of sound measurements, we estimate uncertainties in the final depth soundings to be no greater than 1 percent of the water depth. The total vertical uncertainty of the bathymetry data is calculated using the constant- and depth-dependent factors summed in quadrature (International Hydrographic Organization, 2008). The average vertical uncertainty in bathymetry data is estimated to be 9 cm. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Andrew W. Stevens Originator: Alexander G. Snyder Publication_Date: 2017 Title: Nearshore bathymetry data from northern Monterey Bay, California, March 2016 Geospatial_Data_Presentation_Form: comma-delimited text Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey, Pacific Coastal and Marine Science Center Online_Linkage: https://www.sciencebase.gov/catalog/file/get/59f10da4e4b0220bbd9c6bd1 Type_of_Source_Media: digital dataset Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160321 Ending_Date: 20160331 Source_Currentness_Reference: ground condition at time data were collected Source_Citation_Abbreviation: bathymetry data Source_Contribution: Bathymetry data were combined with topography data, and then interpolated into a gridded surface Source_Information: Source_Citation: Citation_Information: Originator: Andrew W. Stevens Originator: Joshua B. Logan Originator: Daniel J. Hoover Originator: Alexander G. Snyder Publication_Date: 2017 Title: Topography data from northern Monterey Bay, California, March 2016 Geospatial_Data_Presentation_Form: comma-delimited text Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey, Pacific Coastal and Marine Science Center Online_Linkage: https://www.sciencebase.gov/catalog/file/get/559f10e77e4b0220bbd9c6bda Type_of_Source_Media: digital dataset Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160321 Ending_Date: 20160325 Source_Currentness_Reference: ground condition at time data were collected Source_Citation_Abbreviation: topography data Source_Contribution: Topography data were combined with bathymetry data, and then interpolated into a gridded surface Source_Information: Source_Citation: Citation_Information: Originator: Joshua B. Logan Originator: Alexander G. Snyder Publication_Date: 2017 Title: Terrestrial lidar data from northern Monterey Bay, California, March 2016 Geospatial_Data_Presentation_Form: comma-delimited text Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey, Pacific Coastal and Marine Science Center Online_Linkage: https://www.sciencebase.gov/catalog/file/get/59f10ebfe4b0220bbd9c6bdf Type_of_Source_Media: digital dataset Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160321 Ending_Date: 20160322 Source_Currentness_Reference: ground condition at time data were collected Source_Citation_Abbreviation: terrestrial lidar data Source_Contribution: Topography data were combined with bathymetry data, and then interpolated into a gridded surface Process_Step: Process_Description: Quality control was applied to raw topography, terrestrial lidar, and bathymetry data. Comparisons were performed to ensure internal consistency between the survey platforms. DEMs were produced by linear interpolation of all available elevation point data with the computer program MATLAB. Data were exported in ESRI ARC ascii grid format for distribution. Source_Used_Citation_Abbreviation: bathymetry data, topography data, terrestrial lidar data Process_Date: 20171106 Process_Step: Process_Description: Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Process_Date: 20201019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster 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: 2 Ordinate_Resolution: 2 Planar_Distance_Units: Meter Geodetic_Model: Horizontal_Datum_Name: NAD83 (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: North American Vertical Datum of 1988 Altitude_Resolution: 0.001 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Attribute Table Entity_Type_Definition: Table containing attribute information associated with the dataset Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Elevation (NAVD88) Attribute_Definition: Elevation relative to the North American vertical datum of 1988 (NAVD88) Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -23.520 Range_Domain_Maximum: 12.810 Attribute_Units_of_Measure: meters Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: U.S. Geological Survey - Science Base Contact_Organization: U.S. Geological Survey 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: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: DEM grids are available in Esri ARC/INFO ASCII GRID format (mb16_mar_dem_manresa.asc; mb16_mar_dem_mosslanding.asc; mb16_mar_dem_santacruz.asc; mb16_mar_dem_soquelcove.asc), along with low-resolution browse graphics showing the DEMs color-coded by elevation (mb16_mar_dems_overall.png; mb16_mar_dems_inset.png) and associated 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: png Format_Version_Number: Matlab 9.2.0.556344 Format_Specification: PNG Image Format_Information_Content: PNG image showing individual digital elevation models of northern Monterey Bay in detail File_Decompression_Technique: none Transfer_Size: 2.0 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dems_inset.png Access_Instructions: Data can be downloaded via the Internet Digital_Form: Digital_Transfer_Information: Format_Name: png Format_Version_Number: Matlab 9.2.0.556344 Format_Specification: PNG Image Format_Information_Content: PNG image showing overview of digital elevation models of northern Monterey Bay File_Decompression_Technique: none Transfer_Size: 1.4 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dems_overall.png Access_Instructions: Data can be downloaded via the Internet Digital_Form: Digital_Transfer_Information: Format_Name: ASCII Format_Version_Number: ArcGIS 10.1 Format_Specification: Esri ARC/INFO ASCII GRID Format_Information_Content: Esri ASCII raster file containing digital elevation model of northern Monterey Bay, Manresa sub-area File_Decompression_Technique: none Transfer_Size: 99.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dem_manresa.asc Access_Instructions: Data can be downloaded via the Internet Digital_Form: Digital_Transfer_Information: Format_Name: ASCII Format_Version_Number: ArcGIS 10.1 Format_Specification: Esri ARC/INFO ASCII GRID Format_Information_Content: Esri ASCII raster file containing digital elevation model of northern Monterey Bay, Moss Landing sub-area File_Decompression_Technique: none Transfer_Size: 115.9 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dem_mosslanding.asc Access_Instructions: Data can be downloaded via the Internet Digital_Form: Digital_Transfer_Information: Format_Name: ASCII Format_Version_Number: ArcGIS 10.1 Format_Specification: Esri ARC/INFO ASCII GRID Format_Information_Content: Esri ASCII raster file containing digital elevation model of northern Monterey Bay, Santa Cruz sub-area File_Decompression_Technique: none Transfer_Size: 17.6 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dem_santacruz.asc Access_Instructions: Data can be downloaded via the Internet Digital_Form: Digital_Transfer_Information: Format_Name: ASCII Format_Version_Number: ArcGIS 10.1 Format_Specification: Esri ARC/INFO ASCII GRID Format_Information_Content: Esri ASCII raster file containing digital elevation model of northern Monterey Bay, Soquel Cove sub-area File_Decompression_Technique: none Transfer_Size: 28.8 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/59f10ea5e4b0220bbd9c6bdc?name=mb16_mar_dem_soquelcove.asc Access_Instructions: Data can be downloaded via the Internet Fees: None Metadata_Reference_Information: Metadata_Date: 20201019 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Andrew W. Stevens Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical Address: 2885 Mission St. City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: 831-460-7424 Contact_Electronic_Mail_Address: astevens@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998