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

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

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

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P13FEC44/BigSur_SGCP_locations_metadata.html>