1. Coastal/Marine Hazards and Resources
2. Woods Hole Coastal and Marine Science Center
3. Field activity data

Topographic and bathymetric data, sediment samples, and imagery collected at Head of the Meadow Beach, Truro in March 2020, U.S Geological Survey Field Activity 2020-015-FA (ver. 2, December 2023)

Revised December 15, 2023, ver. 2.0

Revision History

Suggested citation: Over, J.R., Sherwood, C.R., Traykovski, P.A., Brosnahan, S.M., Martini, M.A., Marsjanik, E., Borden, J.S., 2020, Topographic and bathymetric data, sediment samples, and beach imagery collected at Head of the Meadow, Truro in March 2020, U.S Geological Survey Field Activity 2020-015-FA (ver. 2, December 2023) U.S Geological Survey data release, https://doi.org/10.5066/P9KSG1RQ

Abstract: The data in this release map the beach and nearshore environment at Head of the Meadow Beach in Truro, MA and provide environmental context for the camera calibration information for the 2019 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is related to the field activity 2020-015-FA and a collaboration with the National Park Service at Cape Cod National Seashore to monitor the region that falls within the field of view of the CoastCam, which are two video cameras aimed at the beach. On March 4, 6, and 10, 2020, U.S Geological Survey and Woods Hole Oceanographic Institution (WHOI) scientists conducted field surveys to collect position and orientation information for the CoastCam cameras and map the field of view. Elevation data were collected using a real time kinematic – satellite navigation system (RTK-GNSS) receiver attached to a pole and walked on the beach. Point data of the beach face were collected along transects and at periodic locations of plywood targets moved throughout the day within the CoastCam view. Grain-size analysis was performed on sediment samples collected with a spade along multiple profiles from the bluff base to the intertidal zone. Images of the beach were taken with a camera (Ricoh GRII) and a post-processed kinematic (PPK) system attached to a kitesurfing kite, and high-precision targets (AeroPoints) were used as ground control points. Bathymetry was collected in the nearshore using a single-beam echosounder mounted on a surf capable self-righting electric autonomous survey vehicle. Agisoft Metashape (v. 1.6.1) was used to create a digital elevation model with the collected imagery and this was merged with the bathymetry in MatLab (v. 2020) to create a continuous topobathy product. 

Filename and description	Preview	Metadata	Download
Topobathy
2020015FA_Truro_bathymetry Single-beam bathymetry taken with echosounder mounted on autonomous surface vehicle (1-meter resolution cloud optimized 64-bit float GeoTIFF in UTM Zone 19N and Trackline data in CSV format)		TXT XML	2020015FA_Truro_bathymetry.zip 1.46 MB
2020015FA_Truro_DSM Digital surface model with 25-centimenter resolution made from the beach imagery using Agisoft Metashape (UTM Zone 19N 32-bit float GeoTIFF format).		TXT XML	2020015FA_Truro_DSM_25cm.tif 2.89 MB
2020015FA_Truro_topobathy Merged 1-meter gridded bathymetry and digital elevation model. (UTM Zone 19N 64-bit float GeoTIFF format).		TXT XML	2020015FA_Truro_topobathy_1m.tif 3.70 MB
Samples
2020015FA_Truro_sedsamples Location and grain size analysis of sediment samples collected at Head of the Meadow Beach (Geographic, NAD83, point shapefile, CSV, XLSX formats).		TXT XML	2020015FA_Truro_sedsamples_v2.zip 25.5 KB
Imagery
2020015FA_Truro_f1 Images collected with camera (Ricoh GRII) attached to a kite (Ozone Enduro V2) (JPEG image format, EXIF headers have been added to include navigation and time tags).		TXT XML	2020015FA_Truro_f1.zip 3.70 GB
2020015FA_Truro_f2 Images collected with camera (Ricoh GRII) attached to a kite (Ozone Reo V5) (JPEG image format, EXIF headers have been added to include navigation and time tags).			2020015FA_Truro_f2.zip 1.59 GB
2020015FA_Truro_photolocations Post-processed navigation file, including image times and corresponding camera positions. (CSV format).			2020015FA_Truro_f1_photolocations.csv 85 KB 2020015FA_Truro_f2_photolocations.csv 37 KB
Navigation
2020015FA_Truro_nav_transects Real-time kinematic (RTK) elevation data from two Spectra Precision SP80 GNSS receivers during survey 2020-015-FA on Head of the Meadow Beach (CSV, and point shapefile format).		TXT XML	2020015FA_Truro_navigation.zip 49 KB
2020015FA_Truro_nav_CoastCamTargets Real-time kinematic (RTK) data from two Spectra Precision SP80 GNSS receivers to locate plywood targets and the CoastCams for use in calibration (CSV format).			2020015FA_Truro_nav_CoastCamTargets.csv 4 KB
2020015FA_Truro_ nav_AeroPoints Post-processed kinematic (PPK) location data from deployed ground control targets (AeroPoints) (CSV format).			2020015FA_Truro _nav_AeroPoints.csv 2 KB