Ground Control Point Data from the Outer Banks, North Carolina, post-Hurricane Dorian, September 2019

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Jenna A. Brown
Originator: Christopher R. Sherwood
Originator: Marinna Martini
Originator: Christine J. Kranenburg
Originator: Jin-Si R. Over
Publication_Date: 20210408
Title:
Ground Control Point Data from the Outer Banks, North Carolina, post-Hurricane Dorian, September 2019
Edition: 1.0
Geospatial_Data_Presentation_Form: tabular and raster digital data
Series_Information:
Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/P9DVZC23
Publication_Information:
Publication_Place: St. Petersburg, FL
Publisher: St. Petersburg Coastal and Marine Science Center
Online_Linkage: https://doi.org/10.5066/P9DVZC23
Description:
Abstract:
The U.S. Geological Survey (USGS) Remote Sensing Coastal Change (RSCC) project surveyed 34 features visible from the air to be used as ground control points (GCP) on the Outer Banks, North Carolina, on September 24 and 25, 2019, after the passing of Hurricane Dorian (U.S. landfall on September 6, 2019). Global Positioning System (GPS) data were collected in support of aerial imagery surveys documenting the storm impacts and subsequent recovery along the coast and will be used as control and check points in Structure-from-Motion (SfM) photogrammetry processing to produce topographic maps. This dataset consists of horizontal and vertical positions of permanent GCPs, measured using Real-Time Kinematic (RTK) Global Navigation Satellite System (GNSS) equipment. The data are provided in comma-separated values (.csv) delimited text format, in both geographic and projected (Universal Transverse Mercator Zone 18N) coordinates, and vertical measurements are provided as both ellipsoid and orthometric heights. All horizontal coordinates and ellipsoid heights are referenced to the North American Datum of 1983 (NAD83(2011)), and orthometric heights are referenced to the North American Vertical Datum of 1988 (NAVD88), GEOID12B. Additional information as well as photographs for each GCP (120 photos were collected, in total) are also included.
Purpose:
The purpose of this dataset is to provide geospatial GCP data in support of aerial imagery surveys along the coast of the Outer Banks, North Carolina; these data can be used as control and check points in SfM processing to create and validate orthomosaic images, point clouds, and digital elevation models (DEMs).
Supplemental_Information:
These data were collected by the USGS Coastal and Marine Hazards and Resources Program under the USGS field activity number (FAN) 2019-365-FA, and the associated field activity web page contains additional information regarding the field activity: https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-365-FA.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20190924
Single_Date/Time:
Calendar_Date: 20190925
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Not planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -75.70839064
East_Bounding_Coordinate: -75.46428182
North_Bounding_Coordinate: 35.76713430
South_Bounding_Coordinate: 35.20596290
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:7913d7dd-5de5-4f99-aa99-0550f526b492
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: GPS measurement
Theme_Keyword: geospatial datasets
Theme_Keyword: geomorphology
Theme_Keyword: topography
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: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: elevation data
Theme_Keyword: ground control points
Theme_Keyword: image collections
Theme_Keyword: photography
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificinformation
Theme_Keyword: elevation
Theme_Keyword: location
Place:
Place_Keyword_Thesaurus: Geographic Names Information Service (GNIS)
Place_Keyword: North Carolina
Place_Keyword: Outer Banks
Place_Keyword: Cape Hatteras National Seashore
Place_Keyword: Pea Island National Wildlife Refuge
Place_Keyword: Oregon Inlet
Place_Keyword: Rodanthe
Place_Keyword: Waves
Place_Keyword: Salvo
Place_Keyword: Avon
Place_Keyword: Buxton
Place_Keyword: Frisco
Place_Keyword: Hatteras
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: September 2019
Temporal_Keyword: Post-Hurricane Dorian
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 of the dataset and in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jenna A. Brown
Contact_Organization: U.S. Geological Survey, MD-DE-DC Water Science Center
Contact_Address:
Address_Type: mailing and physical address
Address: 1289 McD Dr.
City: Dover
State_or_Province: DE
Postal_Code: 19901
Country: USA
Contact_Voice_Telephone: 302-213-5071
Contact_Electronic_Mail_Address: jennabrown@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
https://coastal.er.usgs.gov/data-release/doi-P9DVZC23/data/2019_0924-0925_OuterBanksNC_GCP_AreaMap.jpg
Browse_Graphic_File_Description:
Regional map showing the GCP locations along the Outer Banks, North Carolina, measured on September 24-25, 2019.
Browse_Graphic_File_Type: JPEG
Data_Set_Credit: Data collection was funded by the U.S. Geological Survey.
Cross_Reference:
Citation_Information:
Originator:
Sherwood, C.R., Warrick, J.A., Hill, A.D., Ritchie, A.C., Andrews, B.D., and Plant, N.P.
Publication_Date: 20180712
Title:
Rapid, Remote Assessment of Hurricane Matthew Impacts Using Four-Dimensional Structure-from-Motion Photogrammetry
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Journal of Coastal Research
Issue_Identification: doi.org/10.2112/JCOASTRES-D-18-00016.1
Publication_Information:
Publication_Place: Coconut Creek, Florida
Publisher: Coastal Education and Research Foundation
Online_Linkage: https://doi.org/10.2112/JCOASTRES-D-18-00016.1
Cross_Reference:
Citation_Information:
Originator: National Ocean Service
Publication_Date: 20120601
Title:
VDATUM MANUAL FOR DEVELOPMENT AND SUPPORT OF NOAA’S VERTICAL DATUM TRANSFORMATION TOOL, VDATUM
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
https://vdatum.noaa.gov/download/publications/Manual_2012.06.26.pdf
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy of the GPS data was determined based on the measurement of two established benchmarks in the area; see the “Notes” attribute in the data file to identify the GCPs corresponding to benchmarks.
Logical_Consistency_Report:
This dataset is derived from a single field survey using identical equipment, set-ups, and staff; therefore, the dataset is internally consistent.
Completeness_Report:
This dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the entire metadata record carefully for additional details.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal accuracy of the GPS data is on the order of 0.034 meters (m), determined as the maximum difference between the reported horizontal position for two established benchmarks in the area and the corresponding RTK measurement.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The vertical accuracy of the data is on the order of 0.047 m, determined as the maximum difference between the reported vertical position for two established benchmarks in the area and the corresponding RTK measurement.
Lineage:
Process_Step:
Process_Description:
PLANNING & DATA ACQUISITION Optimal survey locations were pre-planned using available aerial imagery, with the following criteria for selecting a GCP: easily identified in aerial images, permanent and stationary feature, surrounded by open sky, and with limited relief from the surrounding surface. Additionally, some opportunistic points were chosen in the field.
The GPS data were collected with a single Spectra Precision SP80 GNSS receiver, mounted on a 2-meter survey pole attached to a tripod, connected to the GNSS Continuously Operating Reference Stations (CORS) network, NCBX site in Buxton, North Carolina. At each GCP location, RTK corrections were sampled at 1-second intervals for 60 seconds and the average position (latitude/longitude/ellipsoid height) was recorded in the World Geodetic System of 1984 (WGS84) datum; the GNSS antenna height was accounted for during data collection and export. Multiple RTK average positions were collected for most GCPs to ensure data accuracy and consistency. Additionally, reference photos of each GCP were taken during the survey to aid in identifying the GCPs in aerial imagery. These GCP surveying procedures were based on work by Sherwood and others (2018).
Process_Date: 20190925
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Christopher R. Sherwood
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Position: Research Oceanographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-457-2269
Contact_Electronic_Mail_Address: csherwood@usgs.gov
Process_Step:
Process_Description:
DATA POST-PROCESSING & QUALITY CONTROL The data were post-processed using VDatum (version 3.8) to convert from WGS84 to the NAD83(2011) geodetic datum, and the geographic coordinates were transformed to projected coordinates (UTM Zone 18N) and orthometric height referenced to NAVD88 using GEOID12B (NOS, 2012).
The data were condensed by evaluating the multiple RTK average position measurements per GCP; the horizontal standard deviation of all GPS points was within the stated horizontal accuracy for the survey, therefore, the point with the greatest vertical accuracy was selected for publication. Additionally, the data were quality-controlled and unusable points were removed from the dataset: points collected for equipment testing, points with less than 60 seconds occupation, points without an open sky view.
Process_Date: 20191025
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Christine J. Kranenburg
Contact_Organization:
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
Contact_Position: Cartographer
Contact_Address:
Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727-502-8000
Contact_Electronic_Mail_Address: ckranenburg@usgs.gov
Process_Step:
Process_Description:
DATA PUBLICATION The data were prepared for publication by saving the horizontal and vertical position data for each GCP in a single file (2019_0924-0925_OuterBanksNC_GCPs.csv). Notes describing the measured GCP feature, as well as the approximate location along the coast, were also given for each GCP to aid in identifying the GCPs in aerial imagery.
Reference photos for each GCP were saved in separate directories, to also aid in identifying the GCPs in aerial imagery. Metadata was written to all photo headers using a script and batch processing to execute ExifTool (https://exiftool.org/) and populate fields with information for each GCP from the .csv file. To extract the information from the image headers using ExifTool, the following command can be used (tested with ExifTool version 11.88):
exiftool -csv -f -filename -GPSDateStamp -GPSTimeStamp -GPSLongitude -GPSLatitude -n -Artist -Credit -comment -keywords -Caption -Copyright -CopyrightNotice -Caption-Abstract -ImageDescription directoryname/*.jpg > out.csv
The -csv flag writes the information out in a comma-delimited format. The -n option formats the latitude and longitude as signed decimal degrees.
Process_Date: 20201208
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jenna A. Brown
Contact_Organization: U.S. Geological Survey, MD-DE-DC Water Science Center
Contact_Position: Research Oceanographer
Contact_Address:
Address_Type: mailing and physical address
Address: 1289 McD Dr.
City: Dover
State_or_Province: DE
Postal_Code: 19901
Country: USA
Contact_Voice_Telephone: 302-213-5071
Contact_Electronic_Mail_Address: jennabrown@usgs.gov
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: 34
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -75.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983 (2011)
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563
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: 2019_0924-0925_OuterBanksNC_GCPs.csv
Entity_Type_Definition:
Comma-delimited text file containing position, elevation, and other information related to GCPs surveyed along the Outer Banks, North Carolina, after Hurricane Dorian in September 2019.
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: GCP Identifier
Attribute_Definition:
Identifier associated with each individual GCP, numbered consecutively from north to south.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: GCP Identifiers range between GCP01 and GCP34.
Attribute:
Attribute_Label: Raw GPS Point
Attribute_Definition:
GPS point measurement number in the raw GPS data file associated with each individual GCP, numbered consecutively in time.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 77
Attribute_Units_of_Measure: N/A
Attribute:
Attribute_Label: Local Date
Attribute_Definition: Local date of data collection in MM/DD/YYYY format.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 09/24/2019
Range_Domain_Maximum: 09/25/2019
Attribute_Units_of_Measure: N/A
Attribute:
Attribute_Label: GMT Time
Attribute_Definition:
Greenwich Mean Time (GMT) time of start of GCP occupation in HH:MM:SS format.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 13:33:42
Range_Domain_Maximum: 22:06:39
Attribute_Units_of_Measure: N/A
Attribute:
Attribute_Label: Local Time
Attribute_Definition:
Local time (Eastern Daylight Time) of start of GCP occupation in HH:MM:SS format.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 09:33:42
Range_Domain_Maximum: 18:06:39
Attribute_Units_of_Measure: N/A
Attribute:
Attribute_Label: Easting (NAD83, UTM 18N)
Attribute_Definition: NAD83(2011) UTM x-axis coordinate (Zone 18N)
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 435965.801
Range_Domain_Maximum: 457740.388
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Northing (NAD83, UTM 18N)
Attribute_Definition: NAD83(2011) UTM y-axis coordinate (Zone 18N)
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3896110.603
Range_Domain_Maximum: 3958221.519
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Orthometric Height (NAVD88, m)
Attribute_Definition: NAVD88 (GEOID12B) orthometric height
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.805
Range_Domain_Maximum: 4.71
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Longitude (NAD83)
Attribute_Definition: NAD83(2011) Longitude
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -75.703493
Range_Domain_Maximum: -75.466411
Attribute_Units_of_Measure: Decimal Degrees
Attribute:
Attribute_Label: Latitude (NAD83)
Attribute_Definition: NAD83(2011) Latitude
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 35.205963
Range_Domain_Maximum: 35.766894
Attribute_Units_of_Measure: Decimal Degrees
Attribute:
Attribute_Label: Ellipsoid Height (NAD83, m)
Attribute_Definition: NAD83(2011) ellipsoid height
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -38.017
Range_Domain_Maximum: -34.165
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: STDEV Horizontal (m)
Attribute_Definition:
Horizontal (x,y) standard deviation of the individual GCP, in meters, reported by GPS during data collection.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.007
Range_Domain_Maximum: 0.012
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: STDEV Vertical (m)
Attribute_Definition:
Vertical (z) standard deviation of the individual GCP, in meters, reported by GPS during data collection.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.011
Range_Domain_Maximum: 0.017
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Number of Photos
Attribute_Definition:
Total number of reference photos of each GCP. Photos are named GCP**_P#######, where ** represents the GCP ID and P####### represents the original photo name/number. A total of 120 photos were collected.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 6
Attribute_Units_of_Measure: N/A
Attribute:
Attribute_Label: Notes
Attribute_Definition: Notes describing the features and location of each GCP.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: N/A
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
Contact_Person: SPCMSC Data Management Group
Contact_Address:
Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727-502-8125
Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov
Resource_Description:
The GCP locations, elevations, and other notable information are available in .csv format, and associated reference photos of each GCP are available in .jpg format.
Distribution_Liability:
This publication was prepared by an agency of the United States Government. Although these data were processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
Format_Information_Content: The ASCII (.csv) file can be opened with any text editor.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P9DVZC23/data/2019_0924-0925_OuterBanksNC_GCPs.zip
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20210407
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jenna A. Brown
Contact_Organization: U.S. Geological Survey, MD-DE-DC Water Science Center
Contact_Address:
Address_Type: mailing and physical address
Address: 1289 McD Dr.
City: Dover
State_or_Province: DE
Postal_Code: 19901
Country: USA
Contact_Voice_Telephone: 302-213-5071
Contact_Electronic_Mail_Address: jennabrown@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/spcmsc/2019_0924-0925_OuterBanksNC_GCPs_metadata.html>
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