Metadata: Identification_Information: Citation: Citation_Information: Originator: Peter A. Traykovski Originator: Jin-Si R. Over Publication_Date: 20220607 Title: Topobathy Products in Pea Island National Wildlife Refuge, North Carolina in November 2020 and April, September, and October 2021 Edition: 1.0 Geospatial_Data_Presentation_Form: raster 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/623dcb84d34e915b67d65441 Larger_Work_Citation: Citation_Information: Originator: Jin-Si R. Over Originator: Christopher R. Sherwood Originator: Peter A. Traykovski Originator: Sandra M. 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/P9DPZZG2 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 characterize the beach and nearshore environment at the USGS DUring Nearshore Event eXperiment (DUNEX) site on Pea Island National Wildlife Refuge (PINWR) and at the Basnight Bridge (BB), NC. In November 2020, April, September, and October 2021, USGS and Woods Hole Oceanographic Institute (WHOI) scientists conducted multiple field surveys to collect a topobathy elevation time series. Bathymetry for topobathy products was collected in the nearshore using a single-beam echosounder mounted on a surf capable self-righting electric autonomous survey vehicle. Topography is produced using GPS walking surveys or structure-from-motion (SfM) with the imagery and ground control point data provided in the larger citation. 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 and donated data 2020-024-DD and are related to field activity 2021-028-FA and 2021-032-FA. Purpose: Topobathy dataset was aquired to observe change over time from the dune to the nearshore. Supplemental_Information: Topobathy products are the interpolated topography (SfM or walking survey) data and the single beach echosounder bathymetry data in the larger citation section of the release. For more information about the data, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2020-024-DD and https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-029-FA. Bounding coordinates represent the maximum bounds of the raster’s provided in this dataset. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20201122 Single_Date/Time: Calendar_Date: 20201125 Single_Date/Time: Calendar_Date: 20201127 Single_Date/Time: Calendar_Date: 20210419 Single_Date/Time: Calendar_Date: 20210420 Single_Date/Time: Calendar_Date: 20210907 Single_Date/Time: Calendar_Date: 20210908 Single_Date/Time: Calendar_Date: 20210911 Single_Date/Time: Calendar_Date: 20210912 Single_Date/Time: Calendar_Date: 20210926 Single_Date/Time: Calendar_Date: 20210928 Single_Date/Time: Calendar_Date: 20211019 Single_Date/Time: Calendar_Date: 20211020 Currentness_Reference: Ground condition; data collected on multiple days but surveys have been combined into topobathy grids: 20201122, 20201125, and 20201127; 20210419 and 20210420; 20210907 and 20210908; 20210926 and 20210928; 20211019 and 20211020. Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.52598572 East_Bounding_Coordinate: -75.45864965 North_Bounding_Coordinate: 35.76604133 South_Bounding_Coordinate: 35.67291791 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: WHOI Theme_Keyword: topobathy Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: remote sensing Theme_Keyword: single-beam echo sounder Theme_Keyword: topography Theme_Keyword: bathymetry Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:623dcb84d34e915b67d65441 Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: Pea Island Place_Keyword: Dare Place_Keyword: North Carolina 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. Not for navigational use. 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 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/623dcb84d34e915b67d65441?name=PINWR_Topobathy_browse.JPG&allowOpen=true Browse_Graphic_File_Description: Example elevation colored topobathy grid in Pea Island National Wildlife Refuge. Browse_Graphic_File_Type: JPEG Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All elevation values are internally consistent in relation to each other and are comparable to values of published topobathy in the area (e.g. 2022 USGS CoNED Topobathy DEM (1851 - 2020): Coastal Carolinas, available at https://www.fisheries.noaa.gov/inport/item/67013, accessed May 18, 2022). Logical_Consistency_Report: These grids represent merged grids of single beam echo-sounder bathymetry data collected by Peter Traykovski (WHOI) and collected topographic data from the larger citation. Raw data is provided in the larger citation. Completeness_Report: Not all combinations of topography and bathymetry were merged from the raw data. The best coverage and completeness of the topography and bathymetry collected within two days of each other were used to produce the merged products. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigation information was acquired from the GNSS receiver in PPK mode with a Multi-band GNSS antenna that has a theoretical horizontal accuracy of 1-5 cm and average reported SD of 1.0 cm. See the larger citation for detailed accuracy reports on the bathymetry and topography. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The location information was acquired from the GNSS receiver in PPK mode with a Multi-band GNSS antenna and hot shoe adapter with a theoretical horizontal accuracy of 1-5 cm and average reported SD of 1.6 cm. See the larger citation for detailed accuracy reports on the bathymetry and topography. Lineage: Process_Step: Process_Description: The bathymetry and topography data are provided in the larger citation. Data are merged using the following steps. 1. The data (x,y,z) from the DSM and Bathy grids were combined with the interpolation method regularizedata3d (bicubic interpolation) using a smoothness coefficient of 0.001 (appropriate for data with low noise where the input points nearly coincide with the output surface) by Jamal (2020). 2. The combined grid was then masked using 'roipoly' which returned the mask as a binary image, setting pixels inside the region of interest (ROI) polygon to 1 and pixels outside the ROI to 0. The boundary was determined by specifying the polygon vertices as the regularizedata3D outputs (x,y,z) from the previous step and prevented extrapolation beyond the tracklines of the Bathy and DSM extent. 3. The final merged GeoTIFF was created using the GRIDobj tool in the TopoToolbox (Schwanghart and Scherler, 2014) which used the interpolated grid and the mask from step 2 to create the final output. 4. Export gridded 1 m data in NAD83(2011)/UTM Zone 18N in NAVD88 meters, using Geoid 12B, as a GeoTIFF. Note that using NAVD88 as a height means that the depths are not true-depths but the elevation of the seafloor above or below the geoid. Schwanghart, W., Scherler, D. (2014): TopoToolbox 2 ‚ MATLAB-based software for topographic analysis and modeling in Earth surface sciences. Earth Surface Dynamics, 2, 1-7. [DOI: 10.5194/esurf-2-1-2014] Jamal (2020). RegularizeData3D (https://www.mathworks.com/matlabcentral/fileexchange/46223-regularizedata3d), MATLAB Central File Exchange. Retrieved September 23, 2020. Process_Date: 202203 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter A. Traykovski Contact_Organization: Woods Hole Oceanographic Institution Contact_Position: Associate Scientist Contact_Address: Address_Type: mailing and physical address Address: 226 Woods Hole Rd, MS #12 City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-289-2638 Contact_Electronic_Mail_Address: ptraykovski@whoi.edu Process_Step: Process_Description: The grids were converted into cloud optimized GeoTiffs (cog) and assigned a nodata value of -3.402823E38 using gdal_translate with the following command: for %i in (.\*.tif) do gdal_translate %i .\cog\%~ni_cog.tif -co COMPRESS=LZW -co COPY_SRC_OVERVIEWS=YES -co BIGTIFF=YES -co TILED=YES -nodata value= -3.402823E38 Where i was the name of each geoTIFF section and there is an empty folder named cog in the directory. Process_Date: 20220512 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: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1258 Contact_Voice_Telephone: 508-548-8700 x2269 Contact_Electronic_Mail_Address: jover@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: 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: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: NAD83_National_Spatial_Reference_System_2011 Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.000000 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: 2020024DD_PINWR_DUNEX_Topobathy_1m_1122-25-27_cog.tif Entity_Type_Definition: A 1-m raster dataset (NAD83[2011]/UTM Zone 18N GeoTIFF) with encoded elevation values from bathymetry collected on November 22 and 27, 2020 and walking survey topography from November 22 and 25, 2020 at the Pea Island National Wildlife Refuge DUNEX site. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 (m) using Geoid 2012B Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10.655 Range_Domain_Maximum: 5.915 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2020024DD_PINWR_DUNEX_Topobathy_1m_0419-20_cog.tif Entity_Type_Definition: A 1-m raster dataset (NAD83[2011]/UTM Zone 18N GeoTIFF) with encoded elevation values from bathymetry collected on April 19 and 20, 2021 and walking survey topography from April 20, 2021 at the Pea Island National Wildlife Refuge DUNEX site. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 (m) using Geoid 2012B Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -17.836 Range_Domain_Maximum: 5.078 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2020024DD_PINWR_BB_Topobathy_1m_0420_cog.tif Entity_Type_Definition: A 1-m raster dataset (NAD83[2011]/UTM Zone 18N GeoTIFF) with encoded elevation values from bathymetry and walking survey topography collected on April 20, 2021 at the Pea Island National Wildlife Refuge Basnight Bridge site. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 (m) using Geoid 2012B Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -11.079 Range_Domain_Maximum: 0.684 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2021029FA_PINWR_DUNEX_Topobathy_1m_0907-08_cog.tif Entity_Type_Definition: A 1-m raster dataset (NAD83[2011]/UTM Zone 18N GeoTIFF) with encoded elevation values from bathymetry collected on September 7, 2021 and Helikite survey topography from September 8, 2021 at the Pea Island National Wildlife Refuge DUNEX site. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 (m) using Geoid 2012B Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -8.019 Range_Domain_Maximum: 7.629 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2021029FA_PINWR_DUNEX_Topobathy_1m_0911-12_cog.tif Entity_Type_Definition: A 1-m raster dataset (NAD83[2011]/UTM Zone 18N GeoTIFF) with encoded elevation values from bathymetry collected on September 12, 2021 and Helikite survey topography from September 11, 2021 at the Pea Island National Wildlife Refuge DUNEX site. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 (m) using Geoid 2012B Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -17.319 Range_Domain_Maximum: 8.237 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2021029FA_PINWR_DUNEX_Topobathy_1m_0926-28_cog.tif Entity_Type_Definition: A 1-m raster dataset (NAD83[2011]/UTM Zone 18N GeoTIFF) with encoded elevation values from bathymetry collected on September 28, 2021 and Helikite survey topography from September 26, 2021 at the Pea Island National Wildlife Refuge DUNEX site. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 (m) using Geoid 2012B Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -9.982 Range_Domain_Maximum: 7.644 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2021029FA_PINWR_DUNEX_Topobathy_1m_1019-20_cog.tif Entity_Type_Definition: A 1-m raster dataset (NAD83[2011]/UTM Zone 18N GeoTIFF) with encoded elevation values from bathymetry collected on October 19 and 20, 2021 and Helikite survey topography from October 19, 2021 at the Pea Island National Wildlife Refuge DUNEX site. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 (m) using Geoid 2012B Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -9.994 Range_Domain_Maximum: 7.428 Attribute_Units_of_Measure: meters Overview_Description: Entity_and_Attribute_Overview: There are seven topobathy grids represent elevation in meters relative to the NAVD88 datum. The cloud optimized GeoTIFFs have no-data values of -3.402823E38. The naming convention is as follows: the USGS field name 2020024DD or 2021029FA; location is Pea Island National Wildlife Refuge (PINWR) at either the DUNEX or Basnight Bridge (BB) site; product is Topobathy; resolution is 1-meter; and date is in MMDD-DD to provide context if data were collected on multiple days for the final grid. Entity_and_Attribute_Detail_Citation: USGS Field Activity 2021-029-FA and Donated Data 2020-024-DD 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: Each file represents a merged interpolated topobathy grid of elevation values in Pea Island National Wildlife Refuge. 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: GeoTIFF Format_Version_Number: 1.0.0 Format_Specification: GeoTIFF Format_Information_Content: Merged grids of single beam bathymetric data collected by Peter Traykovski (WHOI) and topography data collected during field activity 2021-029-FA and from donated data 2020-024-DD. Transfer_Size: 21 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/623dcb84d34e915b67d65441 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/623dcb84d34e915b67d65441 Network_Resource_Name: https://doi.org/10.5066/P9DPZZG2 Access_Instructions: The first link in the list above is to directly download all of the data into one zip file (the transfer size), the second link is to the page where you can download the topobathy individually, the third link is to the publication landing page. Fees: None. Technical_Prerequisites: These data are available as cloud optimized GeoTIFF rasters. To utilize these data, the user must have an image viewer, image processing, GIS software package capable of importing a GeoTIFF, and a way to unzip the raw data. Free spatial data viewers or proprietary software such as ArcGIS Earth or Google Earth Pro are capable of displaying the data. See: http://www.esri.com/software/arcgis-earth, or https://www.google.com/earth/desktop/. 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 USGS. Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998