Other ID: DUNEX Topobathy Surveys
Status: Completed
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Funding Program(s): Next-Generation Total Water Level and Coastal Change Forecast (WH) (MN00U03)
Principal Investigator(s): Christopher Sherwood
Affiliate Investigator(s): Jennifer Brown (SPCMSC) Peter Traykovski (WHOI) Patrick Dickhudt (USACE) Katherine Anarde (NCSU) Ryan Mieras (UNCW) Laura Moore (UNC)
Information Specialist(s): Jin-Si Over, Olivia De Meo
Data Type(s): Sonar: Sidescan, Sonar: Single Beam, Location-Elevation: Navigation, Imagery: Photo
Scientific Purpose/Goals: We propose to collect detailed topobathy measurements spanning the nearshore and beach/dune throughout the storm and recovery period(s) during hurricane season. Observations from this site will provide insight into cross-shore storm processes and impacts, including wave transformation and shoreline water levels, rapid changes in coastal elevations, on/offshore sediment exchanges, and resulting habitat changes. These detailed measurements will provide a more complete understanding of storm impacts and recovery on natural beach/dune systems, which will allow us to validate and improve forecasts of water levels, coastal change, and habitat.
Vehicle(s):
Start Port/Location: Dare County, NC
End Port/Location: Dare County, NC
Start Date: 2021-09-06
End Date: 2021-10-20
Equipment Used: Digital camera, Cerulean Sonar S-500 Sounder, PingDSP 3DSS-DX-450, Spectra Precision SP80, PPK GPS, Echosounder ECS 24D, UAS- heli-kite, Aeropoint targets, Ricoh GR II
Information to be Derived: Topography, bathymetry, imagery
Summary of Activity and Data Gathered: DUNEX Pea Island topobathy field work was completed on 10/25/2021. Bathymetry was collected on five different days with the SSV and Yellowfin of WHOI. The heli-kite and Ricoh GRII with plastic ground control points were used to survey eight times. Foot surveys with the SP80 were done on thirteen days. Aeropoints were deployed twice. Two Ricoh GRIIs were broken during field work. Two reference marks were established in the Parking lot of the boat launch on Pea Island.
Staff: Sandra Brosnahan, Jennifer Cramer, Jin-Si Over, Christopher Sherwood
Affiliate Staff:
Notes: This FA is part of DUNEX and covers the topography and bathymetry data while 2021-028-FA covers the cross shore array, grain size, and wave data. Topobathy is related to similar data that was collected in the same spot by Peter Traykovski of WHOI in the donated data 2020-024-DD
Location:
Pea Island National Wildlife Refuge, Hatteras Island, North Carolina, United States, Atlantic Ocean
| Boundaries | |||
|---|---|---|---|
| North: 35.68253779 | South: 35.67043322 | West: -75.48321725 | East: -75.45715809 |
Platform(s):
 on foot |  WHOI SSV |  WHOI Yellowfin |  WHOI NeedleNose |
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 (ver. 1.1, May 2024): U.S Geological Survey data release, https://doi.org/10.5066/P9DPZZG2.
Over, J.R., Sherwood, C.R., Hegermiller, C.A., 2021, USGS DUNEX Operations on the Outer Banks: URL: https://www.usgs.gov/centers/woods-hole-coastal-and-marine-science-center/science/usgs-dunex-operations-outer-banks.
Over, J.R., Sherwood, C.R., Traykovski, P., Brown, J.A., 2022, Kites, Cameras, Action! High-resolution Small-scale Topo-bathy Mapping [abs]: , 5th Federal UxS Workshop.
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| Digital camera | On this day the first camera (Ricoh GRII) broke and a back-up SONY ILCE-6000 was used to finish the survey. | Photo | |
| Cerulean Sonar S-500 Sounder | Attached to the WHOI Yellowfin. | Single Beam | Single-beam Bathymetry Data from Yellowfin (Trackline, GPS, and soundings from echosounder attached to the ASV Yellowfin (WHOI). Interpolated product is also available as a topobathy raster.) |
| PingDSP 3DSS-DX-450 | Attached to Needlenose | Sidescan | DUNEX_PINWR_Sidescan (Sidescan sonar bathymetry products at the Pea Island National Wildlife Refuge DUNEX Site, North Carolina in October 2021) |
| Spectra Precision SP80 | Spectra Precision equipment used as a rover and base station to collect Real-Time Kinematic (RTK) data (i.e. elevation, position) of a surface or ground control point | Navigation | DUNEX_PINWR_GCP (Ground control points collected for Helikite operations at the Pea Island National Wildlife Refuge DUNEX Site, North Carolina in September and October 2021) DUNEX_PINWR_GPS_metdata_v1_1 (Reference marks, walking GPS surveys, CoastCam GCPs, and instrument location data in Pea Island National Wildlife Refuge, North Carolina in November 2020, April, September, and October 2021 (ver. 1.1, May 2024)) |
| PPK GPS | An Emlid Reach M2 was attached/hot shoed to the Richo GR II to take a GPS position every time a picture was taken. A base station was also simultaneously taking information. After the field activity the GPS log and base logs were processed. Emlid was also attached to SSV. | Navigation | |
| Echosounder ECS 24D | Attached to SSV-Small Surf Vessel, Echologger ECS D24 used to collect bathymetry data | Single Beam | Single Beam Bathymetry data from SSV (Bathymetry trackline data, interpolated product is also available and merged with topography. The ECS 24D is attached to the SSV.) |
| UAS- heli-kite | Used as the platform to attach the Ricoh GRII cameras | Photo Navigation Video | |
| Aeropoint targets | The AeroPoints are deployed as ground control points and have an internal GPS that are uploaded and post-processed in the Propeller network. | Navigation Transects Profiles | |
| Ricoh GR II | --- | Photo | DUNEX_PINWR_DSM_2021-029-FA (Digital surface models of Pea Island National Wildlife Refuge DUNEX Site, North Carolina in September and October 2021) DUNEX_PINWR_ortho_2021-029-FA (Orthomosaics and image locations of Pea Island National Wildlife Refuge DUNEX Site, North Carolina in September and October 2021) Heli-kite topography surveys (Ricoh camera is attached to Helikite and takes a picture every second. Photos are then used in structure-from-motion) |
