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  4. Data Release 10.5066/P9WSF09G

Overlapping seabed images and location data acquired using the SQUID-5 system at Looe Key, Florida, in July 2021, with structure-from-motion derived point cloud, digital elevation model and orthomosaic of submerged topography

By Gerry A. Hatcher, Christine J. Kranenburg, Jonathan A. Warrick, Stephen T. Bosse, David G. Zawada, Kimberly K. Yates, and Selena A. Johnson

https://doi.org/10.5066/P9WSF09G

Dates

Published: Oct. 5, 2022

Summary

Underwater images were collected using a towed-surface vehicle with multiple downward-looking underwater cameras developed by the U.S. Geological Survey (USGS). The system is named the Structure-from-Motion (SfM) Quantitative Underwater Imaging Device with Five Cameras (SQUID-5). The raw images and associated navigation data were collected at Looe Key, a coral reef located within the Florida Keys National Marine Sanctuary approximately eleven kilometers south of Ramrod Key, Florida. SQUID-5 was towed through the survey area using the 25' R/V Sallenger USGS support vessel during the data collection from July 15-July 19, 2021. The images and position data acquired by the SQUID-5 system were then processed using SfM photogrammetry techniques to generate the point cloud, digital elevation model, and full-color orthomosaic data products presented here. The goal of this work was to generate very high (millimeter scale) resolution maps and precisely co-registered, full-color, orthomosaic imagery of the seabed at Looe Key with accurate geospatial location to support ongoing USGS research, including seafloor elevation and stability modeling, and small-scale hydrodynamic flow modeling at millimeter scales over short time frames (event-driven and storms). These data will also enable other researchers and stakeholders to co-register and validate their imagery and ecological data in the area.

Imagery Data

Location-Elevation Data

Suggested Citation

Hatcher, G.A., Kranenbug, C.J., Warrick, J.A., Bosse, S.T., Zawada, D.G., Yates, K.K., Johnson, S.A., 2022, Overlapping seabed images and location data acquired using the SQUID-5 system at Looe Key, Florida, in July 2021, with structure-from-motion derived point cloud, digital elevation model and orthomosaic of submerged topography: U.S. Geological Survey data release, http://doi.org/10.5066/P9WSF09G.

Overview Image

Overview image of data release

Overview Map