Metadata: Identification_Information: Citation: Citation_Information: Originator: Jin-Si R. Over Originator: Alex J. Olson Originator: Noa R. Randall Publication_Date: 20220607 Title: Ground control points collected for Helikite operations at the Pea Island National Wildlife Refuge DUNEX Site, North Carolina in September and October 2021 Edition: 1.0 Geospatial_Data_Presentation_Form: tabular digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9DPZZG2 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Online_Linkage: https://doi.org/10.5066/P9DPZZG2 Online_Linkage: https://www.sciencebase.gov/catalog/item/623e13aad34e915b67d6d7ee Larger_Work_Citation: Citation_Information: Originator: Jin-Si R. Over Originator: Christopher R. Sherwood Originator: Peter Traykovski Originator: Sandra Brosnahan Originator: Alex J. Olson Originator: Noa R. Randall Publication_Date: 2022 Title: DUNEX topographic, bathymetric, and supporting GPS data collected in Pea Island National Wildlife Refuge, North Carolina 2020-2021 Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data, tabular digital data, remote-sensing image Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9D94NZ3 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Over, J.R., Sherwood, C.R., Traykovski, P.A., Olson, A.J., Randall, N.R., and Brosnahan, S.M., 2022, DUNEX topographic, bathymetric, and supporting GPS data collected in Pea Island National Wildlife Refuge, North Carolina 2020-2021: U.S Geological Survey data release, https://doi.org/10.5066/P9DPZZG2 Online_Linkage: https://doi.org/10.5066/P9DPZZG2 Online_Linkage: https://www.sciencebase.gov/catalog/item/623dca6cd34e915b67d65110 Description: Abstract: The data in this part of the release provide the location information of the temporary ground control points placed on the beach at the USGS DUring Nearshore Event eXperiment (DUNEX) site on Pea Island National Wildlife Refuge, NC. DUNEX is a multi-agency, academic, and non-governmental organization collaborative community experiment designed to study nearshore coastal processes during storm events. USGS participation in DUNEX will contribute new measurements and models that will increase our understanding of storm impacts to coastal environments, including hazards to humans and infrastructure and changes in landscape and natural habitats. Collected data are part of field activity 2021-029-FA. During September and October 2021, USGS and Woods Hole Oceanographic Institute (WHOI) scientists conducted multiple field surveys to collect an elevation time series. Ground control point location data were collected using a real time kinematic – satellite navigation system (RTK-GNSS) receiver. Images of the beach for use in structure from motion were taken with a camera attached to a helium filled balloon-kite (Helikite). Agisoft Metashape (v. 1.8.1) was used to create orthomosaics and digital surface models (DSMs) with the collected imagery and ground control points. Purpose: Ground control points (GCPs) are for georeferencing the aerial imagery. Supplemental_Information: For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-029-FA. Information about the DUNEX project is available at https://usgs.gov/dunex2021. The bounding coordinates below represent the maximum extents of the collected GCP data. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20210907 Single_Date/Time: Calendar_Date: 20210908 Single_Date/Time: Calendar_Date: 20210911 Single_Date/Time: Calendar_Date: 20210919 Single_Date/Time: Calendar_Date: 20210926 Single_Date/Time: Calendar_Date: 20211003 Single_Date/Time: Calendar_Date: 20211012 Single_Date/Time: Calendar_Date: 20211019 Currentness_Reference: Ground condition; ground control data collected on eight days. Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.48101037 East_Bounding_Coordinate: -75.47935361 North_Bounding_Coordinate: 35.68001754 South_Bounding_Coordinate: 35.67542504 Keywords: 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: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: DUNEX Theme_Keyword: GPS navigation Theme_Keyword: ground control points Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: GPS measurement Theme_Keyword: geolocation measurement Theme_Keyword: datasets Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:623e13aad34e915b67d6d7ee Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: Pea Island Place_Keyword: North Carolina Place_Keyword: Dare Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Not for navigational use. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R. Over Contact_Organization: U.S. Geological Survey, Northeast Region: Woods Hole Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2269 Contact_Electronic_Mail_Address: jover@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/ 623e13aad34e915b67d6d7ee?name=PINWR_GCP_browse.jpg&allowOpen=true Browse_Graphic_File_Description: Black and white tarp target ground control point on the beach at Pea Island. Browse_Graphic_File_Type: JPEG Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Positions and elevations are produced by either a Spectra Precision (SP)80 Base Station and Rover or Rover and North Carolina CORS Network. AeroPoint post processed network positions and Rover positions were all within 2 cm in the XYZ directions as a QC check, but for consistency all positions provided are from the SP80. Logical_Consistency_Report: The file contains USGS field activity 2021-029-FA ground control points. Completeness_Report: GCPs are not always visible in associated imagery or are visible but do not have location information – as much information as is available is provided. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The SP80 RTK systems used to collect location data have a theoretical horizontal accuracy of 2 cm on any single point, but QC and repeat occupations of the same spot suggest slightly higher uncertainties up to 5-10 cm including user error. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The SP80 RTK systems used to collect location data have a theoretical vertical accuracy of 1 cm on any single point, but QC and repeat occupations of the same spot suggest slightly higher uncertainties up to 5-10 cm including user error. Lineage: Process_Step: Process_Description: Over the field activity, the SP80 equipment was used to take the location information of ground control points and equipment installed at the field site. At the end of the field activity all GPS points were corrected to the OPUS solution averages of the reference marks (see larger citation GPS data) by shifting the XYZ in Carlson SurvCE v. 6.08 (http://survce.com/home, accessed August, 2021). Ground control points for the Helikite surveys were either black and white square plastic tarps with a number on them or AeroPoint yellow and black targets that were replaced every survey – a random letter was used for each survey to distinguish between surveys that used the same GCPs. All GCPs were measured at the center of the tarp or target with the SP80 pole and equipment. Process date reflects the beginning of the events. Data processing ended in 2021-11. Process_Date: 202109 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R. Over Contact_Organization: U.S. Geological Survey, Northeast Region: Woods Hole Coastal and Marine Science Center Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2269 Contact_Electronic_Mail_Address: jover@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point 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: -69.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.001 Ordinate_Resolution: 0.001 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 (National Spatial Reference System 2011) Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 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: 2021029FA_PINWR_Helikite_GCPs.csv Entity_Type_Definition: Positions, elevations, and attributes of ground control points used during the field activity. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: INFO Attribute_Definition: USGS Field Activity Number Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2021-029-FA Enumerated_Domain_Value_Definition: Year, USGS generated ID, and Field Activity Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: GPS Attribute_Definition: Equipment distinction, information was either collected with the SP80 (RTK), see larger citation for other methods of collection. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Date Attribute_Definition: Date measurements were taken, in YYYYMMDD Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Attributes Attribute_Definition: Identification of surveyed equipment or GCP. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Latitude Attribute_Definition: Estimated position in decimal degrees (NAD83[2011]). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 35.67542504 Range_Domain_Maximum: 35.68001754 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Longitude Attribute_Definition: Estimated position in decimal degrees (NAD83(2011)). Negative values represent W. Attribute_Definition_Source: None Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.48101037 Range_Domain_Maximum: -75.47935361 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Ellipsoid_height_NAD83 Attribute_Definition: Estimated vertical position based on the NAD83(2011) reference ellipsoid. Attribute_Definition_Source: None Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -37.841 Range_Domain_Maximum: -31.505 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Northing Attribute_Definition: Estimated Y position in NAD83(2011)/UTM Zone 18N. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3948055.360 Range_Domain_Maximum: 3948565.183 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Easting Attribute_Definition: Estimated X position in NAD83(2011)/UTM Zone 18N. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 456472.687 Range_Domain_Maximum: 456620.717 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Orthometric_height_NAVD88 Attribute_Definition: Estimated vertical position using NAVD88 (Geoid 18). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.003 Range_Domain_Maximum: 7.340 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Visibility Attribute_Definition: Yes (Y) or No (N) to whether or not the ground control point is visible in any of the imagery collected using the Helikite from the larger work citation. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string. Overview_Description: Entity_and_Attribute_Overview: These attribute definitions describe each column of information in the CSV files. The ‘no data’ value is NA. Entity_and_Attribute_Detail_Citation: USGS Field Activity 2021-014-FA Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888- 275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: Ground control points from multiple days are provided in one CSV file Distribution_Liability: Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: CSV (comma-delimited text) Format_Version_Number: Exported from Excel Office 365 16.01 Format_Information_Content: The CSV file 2021029FA_PINWR_Helikite_GCPs.csv contains ground control point data collected during the field activity. Transfer_Size: 0.02 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/623e13aad34e915b67d6d7ee Network_Resource_Name: https://www.sciencebase.gov/catalog/item/623e13aad34e915b67d6d7ee Network_Resource_Name: https://doi.org/10.5066/P9DPZZG2 Access_Instructions: The first link in the list above is to directly download the data, the second to the data page, and the third link is to the publication landing page. Fees: None. Technical_Prerequisites: The user must have software capable of reading CSV format. Metadata_Reference_Information: Metadata_Date: 20220607 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R. Over Contact_Organization: U.S. Geological Survey, Northeast Region: Woods Hole Coastal and Marine Science Center Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2269 Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with the USGS. Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998