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Ultra-short baseline - navigation points and tracklines for Applied Acoustics EasyTrack Nexus 2 USBL data collected for ROV Global Explorer during USGS field activity 2017-001-FA

Dates

Publication Date
Start Date
2017-05-08
End Date
2017-05-11

Citation

Baldwin, W.E., Moore, E.M., Worley, C.R., Nichols, A.R., and Ruppel, C.D., 2020, Marine geophysical data collected to support methane seep research along the U.S. Atlantic continental shelf break and upper continental slope between the Baltimore and Keller Canyons during U.S. Geological Survey Field Activities 2017-001-FA and 2017-002-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9Y1MSTN.

Summary

In spring and summer 2017, the U.S. Geological Survey’s Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbottom profiler were deployed during the cruises to map water column backscatter, sea-floor bathymetry and backscatter, and subsurface stratigraphy associated with known and undiscovered sea-floor methane seeps. The first cruise, known as the Interagency Mission for Methane Research on Seafloor Seeps and designated as field activity 2017-001-FA, [...]

Contacts

Attached Files

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2017-001-FA_ROVUSBLNav_browse.jpg
“ROV USBL navigation trackline at Chincoteague Ridge.”
thumbnail 53.15 KB
Shapefile: 2017-001-FA_ROVUSBLNavPoints.zip
2017-001-FA_ROVUSBLNavPoints.CPG 5 Bytes
2017-001-FA_ROVUSBLNavPoints.dbf 1.41 MB
2017-001-FA_ROVUSBLNavPoints.prj 145 Bytes
2017-001-FA_ROVUSBLNavPoints.sbn 61.59 KB
2017-001-FA_ROVUSBLNavPoints.sbx 668 Bytes
2017-001-FA_ROVUSBLNavPoints.shp
“Shapefile containing ROV USBL navigation points”
185.41 KB
2017-001-FA_ROVUSBLNavPoints.shx 53.04 KB
Shapefile: 2017-001-FA_ROVUSBLTracklines.zip
2017-001-FA_ROVUSBLTracklines.cpg 5 Bytes
2017-001-FA_ROVUSBLTracklines.dbf 1.05 KB
2017-001-FA_ROVUSBLTracklines.prj 145 Bytes
2017-001-FA_ROVUSBLTracklines.sbn 180 Bytes
2017-001-FA_ROVUSBLTracklines.sbx 124 Bytes
2017-001-FA_ROVUSBLTracklines.shp
“Shapefile containing ROV USBL navigation tracklines”
1.25 MB
2017-001-FA_ROVUSBLTracklines.shx 132 Bytes

Purpose

This dataset contains point and trackline navigation data for four ROV Global Explorer dives tracked using an Applied Acoustics EasyTrack Nexus 2 ultra-short baseline system during USGS field activity 2017-001-FA along the U.S. Atlantic continental shelf break and upper continental slope between Baltimore and Keller Canyons. This information allows for spatial correlation of the video, photography, bathymetry, and geologic samples collected by the ROV during the dives with other geophysical data for investigating sea-floor ecology, chemistry, morphology, and stratigraphy in the area.

Additional Information

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