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MGL1109centerdepth.shp: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, along-track center-beam depths extracted from 100-meter gridded data in shapefile format, geographic coordinates

Dates

Publication Date
Start Date
2011-06-03
End Date
2011-06-25

Citation

Barth, G.A., Baldwin, W.E., Reece, R.S., Gulick, S.S., Danforth, W.W., and Wong, F.L., 2022, Multibeam bathymetry and acoustic backscatter from the Alaskan region, Extended Continental Shelf Project, 2011 field season: Gulf of Alaska and Bering Sea: U.S. Geological Survey data release, https://doi.org/10.5066/F7HM56HK.

Summary

This shapefile contains center-beam depths for approximately 5804 trackline kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109 aboard the R/V Marcus G. Langseth. The depth values were extracted from gridded data which were reduced for position, elevation, orientation, water-column sound-speed, and refraction effects.

Contacts

Attached Files

Click on title to download individual files attached to this item.

MGL1109bathy.jpg
“MGL1109 bathymetry, Gulf of Alaska”
thumbnail 48.54 KB image/jpeg
Shapefile: MGL1109centerdepth.zip
MGL1109centerdepth.CPG 5 Bytes
1.65 GB
MGL1109centerdepth.shp 83.83 MB
MGL1109centerdepth.shx 15.24 MB
MGL1109centerdepth.prj 145 Bytes
MGL1109centerdepth.sbn 15.61 MB
MGL1109centerdepth.sbx 160.75 KB

Purpose

In June 2011, the U.S. Geological Survey (USGS) conducted a research cruise in the Gulf of Alaska aboard the R/V Marcus G. Langseth (Lamont-Doherty Earth Observatory, Columbia University) as part of the U.S. Extended Continental Shelf Project. The mission focused primarily on obtaining geophysical data (multichannel and CHIRP seismic reflection, ocean bottom seismometry, multibeam bathymetry, sonobuoy, XBT and XCTD) for the purposes of determining geologic framework, crustal nature, and sediment thickness in support of delineating the U.S. Extended Continental Shelf under provisions contained in Article 76 of the United Nations Convention on the Law of the Sea (UNCLOS).

Additional Information

Shapefile Extension

boundingBox
minY48.308887
minX-152.379177
maxY57.711567
maxX-137.883352
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dateUploadedThu Aug 25 11:02:34 MDT 2022
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geometryTypePoint
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