Metadata: Identification_Information: Citation: Citation_Information: Originator: Helen W. Dow Originator: Jonathan A. Warrick Originator: Andrew C. Ritchie Publication_Date: 20250903 Title: Synthetic ground control point locations used in photogrammetric processing of approximately 13 km of Big Sur coast from McWay Canyon to Gorda Point, 2017–2023 Geospatial_Data_Presentation_Form: CSV Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P13FEC44 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/P13FEC44 Online_Linkage: https://cmgds.marine.usgs.gov/data-releases/datarelease/10.5066-P13FEC44/ Larger_Work_Citation: Citation_Information: Originator: Helen W. Dow Originator: Jonathan A. Warrick Originator: Andrew C. Ritchie Publication_Date: 2025 Title: Topographic point clouds and change analysis for the Big Sur, California coastline from structure-from-motion photogrammetry from aerial photographs, 2017–2023 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P13FEC44 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Dow, H.W., Warrick, J.A., and Ritchie, A.C., 2025, Topographic point clouds and change analysis for the Big Sur, California coastline from structure-from-motion photogrammetry from aerial photographs, 2017–2023: U.S. Geological Survey data release, https://doi.org/10.5066/P13FEC44. Online_Linkage: https://doi.org/10.5066/P13FEC44 Description: Abstract: This portion of the data release presents locations for the synthetic ground control points (SGCPs) used during the structure-for-motion alignment process in Agisoft Metashape v1.7-2.0. The locations were chosen from lidar flown in early 2018 and then tagged in all imagery where they could be found. Following this procedure the alignment was reoptimized prior to development of the dense point clouds presented in this data release. The data contain the easting, northing, and elevation of the SGCPs taken from the lidar, as well as a description of each location. The data are presented in a comma-delimited text file. Purpose: Data were produced to tie the point clouds presented in this data release to lidar for future use. 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. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20180122 Ending_Date: 20180421 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: -121.651322 East_Bounding_Coordinate: -121.588558 North_Bounding_Coordinate: 36.140484 South_Bounding_Coordinate: 36.048398 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:b10688db-f59a-4a90-ba19-88f217976d4b Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: elevation Theme_Keyword: imageryBaseMapsEarthCover Theme_Keyword: transportation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: geomorphology Theme_Keyword: coastal change hazards topics Theme_Keyword: coastal landsliding Theme_Keyword: aerial and satellite photography Theme_Keyword: agents of coastal change Theme_Keyword: anthropogenic agents of coastal change Theme_Keyword: coastal landslides Theme_Keyword: coastal processes Theme_Keyword: coastal sediment budget Theme_Keyword: coastal zone management Theme_Keyword: effects of coastal change Theme_Keyword: human responses to coastal change Theme_Keyword: hazards and disasters Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: landslides Theme_Keyword: coastal processes Theme_Keyword: hazards Theme_Keyword: topography Theme_Keyword: remote sensing Theme_Keyword: aerial photography Theme_Keyword: image analysis Theme_Keyword: image collections Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation 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 Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: State of California Place_Keyword: Monterey County Place_Keyword: Big Sur Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: California Place_Keyword: Central California Coastal Place_Keyword: Monterey 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 Native_Data_Set_Environment: Microsoft Windows versions 10 and 11, Agisoft PhotoScan version 1.7 through 2.0, LASTools 180322 through 230327 were used to process data for this release. Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Andrew C. Ritchie Originator: Christine J. Kranenburg Originator: Jenna A. Brown Originator: Daniel D. Buscombe Originator: Tom Noble Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Phillipe A. Wernette Publication_Date: 2021 Title: Processing coastal imagery with Agisoft Metashape Professional Edition, version 1.6-Structure from motion workflow documentation Online_Linkage: https://doi.org/10.3133/ofr20211039 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. Logical_Consistency_Report: No formal logical accuracy 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: The horizontal accuracy of these locations is equal to the horizontal accuracy of the lidar, which is not reported Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The vertical accuracy of these locations is equal to the vertical accuracy of the lidar, which is 10 cm Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20210205 Title: 2018 FEMA Lidar: Region 9, CA Point Cloud files with Orthometric Vertical Datum North American Vertical Datum of 1988 (NAVD88) using GEOID18 Geospatial_Data_Presentation_Form: point cloud digital data Other_Citation_Details: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9269/2018_ca_fema_region9_metadata.xml Online_Linkage: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/CA_AZ_FEMA_R9_Lidar_2017_D18/CA_FEMA_Z4_B2_2018/LAZ/ Online_Linkage: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9269/index.html Online_Linkage: https://portal.opentopography.org/usgsDataset?dsid=CA_FEMA_Z4_B2_2018 Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2018 Source_Currentness_Reference: ground condition at time data were collected Source_Citation_Abbreviation: 2018 lidar Source_Contribution: ground control Process_Step: Process_Description: The SGCPs were chosen by looking at the lidar, the dense point clouds, and the imagery. All points that could be located on all data sources and were part of the built environment (and therefore considered to be more stable than the natural environment in this location) were included. The coordinates and elevation of the markers were exported from the lidar. Source_Used_Citation_Abbreviation: 2018 lidar Process_Date: 2024 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: 3 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: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.1 Ordinate_Resolution: 0.1 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: NAD83 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 (EPSG:5703), derived using GEOID18 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: ID Attribute_Definition: Point ID Attribute_Definition_Source: producer defined Attribute_Domain_Values: Unrepresentable_Domain: A unique identification code for the point. Attribute: Attribute_Label: easting Attribute_Definition: Easting coordinate of data point relative to the North American Datum of 1983, projected in the Universal Transverse Mercator coordinate system, zone 10 north, in units of meters (EPSG:26910) Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 621340.6 Range_Domain_Maximum: 627136.1 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: northing Attribute_Definition: Northing coordinate of data point relative to the North American Datum of 1983, projected in the Universal Transverse Mercator coordinate system, zone 10 north, in units of meters (EPSG:26910) Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3990238.2 Range_Domain_Maximum: 4000372.7 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: elevation Attribute_Definition: Elevation derived from the 2018 lidar. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 48.1 Range_Domain_Maximum: 100.5 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: location Attribute_Definition: Description of the location. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Text string describing the location (such as roof apex, road seam, dormer ridge). Overview_Description: Entity_and_Attribute_Overview: The first line of the csv file is a header line. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - CMGDS 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 Resource_Description: The SGCP data are available in a comma-delimited text format. 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_Information_Content: The csv file contains coordinates of synthetic ground control point locations. File_Decompression_Technique: No compression applied Transfer_Size: 0.000342 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://cmgds.marine.usgs.gov/data-releases/datarelease/10.5066-P13FEC44/ Network_Resource_Name: https://doi.org/10.5066/P13FEC44 Access_Instructions: Data can be downloaded using the Network_Resource_Name link and scrolling down to the Location-Elevation Data section. Fees: None. Technical_Prerequisites: The downloadable data file is available in comma-separated values (CSV) spreadsheet format. Text editing software can be used to open the file, as well as spreadsheet programs, such as Microsoft Excel. Metadata_Reference_Information: Metadata_Date: 20250903 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