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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2020-024-DD

Other ID: WHOI Pea Island Walking Surveys and Bathymetry 2020-2021

Status: Pending

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s): Other (Other)

Data Source Information: Woods Hole Oceanographic Institution - Peter Traykovski

Information Specialist(s): Jin-Si Over

Data Type(s): Location-Elevation: Navigation, Sonar: Single Beam

Start Date: 2020-11-22

End Date: 2021-04-20

Equipment Used: PPK GPS, Real Time Kinematic GPS, Echosounder ECS 24D

Information to be Derived: Bathymetry, topography.

Summary of Activity and Data Gathered: Peter Traykovski (WHOI) collected five days of data: 2020-11-22, 2020-11-25, 2020-11-27, 2021-04-19, 2021-04-20. Small surf vehicle was used to collect bathymetry up to 15 m. Backpack walking surveys with continuous GPS successfully mapped the beach. Data collected happened to be in the same location as the DUNEX experiment completed in in 2021 (see 2021-028-FA and 2021-029-FA) and was donated to the USGS as a way to have a longer time series on the field site topobathy at Pea Island. Bathymetry and topography also collected at the southwest section of the Basnight Bridge where it is eroding to see if that would be a feasible study site for DUNEX change during a storm.

Notes: Data is for a pre-survey of the Pea Island DUNEX site (2021-029-FA, 2021-028-FA) and takes place in the same location. Data donated by Peter Traykovski of WHOI


Pea Island National Wildlife Refuge, Dare County, NC

North: 35.7668646 South: 35.67366929 West: -75.52712631 East: -75.46330262


photo of WHOI SSV
photo of on foot
on foot


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,


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
PPK GPSPPK was used to by Peter Traykovski of WHOI for a walking survey and as GPS on the Autonomous surface vehicles. Navigation
Real Time Kinematic GPS --- Navigation
Back-pack GPS Measurements (A JAVAD Triumph-2 GNSS receiver ( was used to collect elevation data relative to a base station. Raw data is XYZ information as a txt file and data points are interpolated to create a low resolution DEM.)
Echosounder ECS 24D --- Single Beam
Pea Island Bathymetry, pre-DUNEX (Attached to SSV-Small Surface Vessel, Echologger ECS D24 used to collect bathymetry data on Pea Island National Seashore)

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