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#1 Federal

MGL1109backutm.tif: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in GeoTIFF format, UTM 6 coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-backscatter data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109...

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Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: September 10, 2026 at 09:38 PM

#2 Federal

MGL1109bathyutm.sd: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, UTM 6 coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey - Coastal and Marine...

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Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: September 10, 2026 at 08:28 PM

#3 Federal

MGL1109bathygeo.asc: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Esri gridascii format, geographic coordinates.

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey - Coastal and Marine...

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Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 09:30 PM

#4 Federal

MGL1109centerdepth.txt: 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 plain text format, geographic coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This text file 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...

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Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 08:31 PM

#5 Federal

MGL1109bathygeo.tif: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in GeoTIFF format, geographic coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey - Coastal and Marine...

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XML

Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 08:40 PM

#6 Federal

MGL1109backsutm.sd: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, UTM 6 coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-backscatter data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109...

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Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 09:58 PM

#7 Federal

Raw Knudsen 3260 CHIRP Subbottom Profiler Data for the Arctic Ocean

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: October 15, 2012 at 12:00 AM

Knudsen 3260 CHIRP subbottom profiler data were collected in the Raw Knudsen SEG-Y Datagram format.

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 05:21 PM

#8 Federal

MGL1109backsgeo.sd: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, geographic coordinate system

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-backscatter data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109...

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Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:37 PM

#9 Federal

Okeanos Explorer (EX1404L1): Shakedown and Mapping, NE Seamounts

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: March 23, 2026 at 04:54 PM

Multibeam, single beam, and subbottom sonar data will be collected 24 hours a day and XBT casts will be conducted at an interval defined by prevailing oceanographic conditions, but not to exceed...

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 03, 2026 at 12:15 AM

#10 Federal

EX1301: Ship Shakedown and Patch Test Exploration, NE Canyons and Seamounts on NOAA Ship Okeanos Explorer between 20130318 and 20130405

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: May 01, 2013 at 12:00 AM

Following annual ship shakedown and patch tests, EX1301 will complete the comprehensive mapping of the Northeast canyons and the adjacent continental shelf carried out by the cruises involved in...

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Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 03, 2026 at 12:15 AM

#11 Federal

MGL1109backsutm.asc: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Esri gridascii format, UTM 6 coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-backscatter data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109...

XML
XML

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:28 PM

#12 Federal

MGL1109backsgeo.xyb: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in XYB (longitude, latitude, backscatter) format, geographic coordinate system

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-backscatter data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109...

XML
XML

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 08:57 PM

#13 Federal

Okeanos Explorer (EX0903): Mapping Field Trial I Mendocino Ridge

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: March 23, 2026 at 04:23 PM

The exhaustive study of the U.S. data holdings pertinent to the formulation of U.S. potential claims of an extended continental shelf under the United Nations Convention of the Law of the Sea...

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Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 03, 2026 at 12:14 AM

#14 Federal

MGL1109backutm.xyb: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in x_utm, y_utm, and backscatter (decibel) format, UTM 6 coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-backscatter data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109...

XML
XML

Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 08:26 PM

#15 Federal

EX1304: Northeast U.S. Canyons Exploration on NOAA Ship Okeanos Explorer between 20130708 and 20130725 (Leg I) and 20130731 and 20130817 (Leg II)

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: July 01, 2013 at 12:00 AM

ROV exploration of the Northeast U.S. Deepwater Canyons complementing and continuing the work of the 2012 ACUMEN expedition. The two legs of EX1304 will perform systematic exploration,...

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Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 03, 2026 at 12:15 AM

#16 Federal

MGL1109bathyutm.asc: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Esri gridascii, UTM 6 coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey - Coastal and Marine...

XML
XML

Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:42 PM

#17 Federal

MGL1109bathygeo.sd: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, geographic coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey - Coastal and Marine...

XML
XML

Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:43 PM

#18 Federal

MGL1109bathygeo.xyz: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in longitude, latitude, depth format, geographic coordinates

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This raster dataset represents approximately 69,060 square kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey - Coastal and Marine...

XML
XML

Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:55 PM

#19 Federal

OCS Area Polygons

Organization: Department of the Interior
Dataset Last Updated: March 05, 2025 at 07:30 PM

These polygon features represent the areas comprising the U.S. Outer Continental Shelf (OCS) as defined by the Bureau of Ocean Energy Management (BOEM). In the Outer Continental Shelf Lands Act...

Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:17 PM

#20 Federal

Multibeam bathymetry and acoustic backscatter data from the Alaskan region, Extended Continental Shelf Project, 2011 field season: Gulf of Alaska and Bering Sea

Organization: Department of the Interior
Dataset Last Updated: August 25, 2022 at 12:00 AM

This publication releases swath bathymetry and backscatter datasets derived from multibeam bathymetric data acquired by the U.S. Geological Survey (USGS) on the R/V Marcus G. Langseth legs MGL1108...

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Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 10:22 PM

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MGL1109backutm.tif: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in GeoTIFF format, UTM 6 coordinates

MGL1109bathyutm.sd: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, UTM 6 coordinates

MGL1109bathygeo.asc: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Esri gridascii format, geographic coordinates.

MGL1109centerdepth.txt: 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 plain text format, geographic coordinates

MGL1109bathygeo.tif: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in GeoTIFF format, geographic coordinates

MGL1109backsutm.sd: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, UTM 6 coordinates

Raw Knudsen 3260 CHIRP Subbottom Profiler Data for the Arctic Ocean

MGL1109backsgeo.sd: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, geographic coordinate system

Okeanos Explorer (EX1404L1): Shakedown and Mapping, NE Seamounts

EX1301: Ship Shakedown and Patch Test Exploration, NE Canyons and Seamounts on NOAA Ship Okeanos Explorer between 20130318 and 20130405

MGL1109backsutm.asc: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Esri gridascii format, UTM 6 coordinates

MGL1109backsgeo.xyb: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in XYB (longitude, latitude, backscatter) format, geographic coordinate system

Okeanos Explorer (EX0903): Mapping Field Trial I Mendocino Ridge

MGL1109backutm.xyb: Multibeam backscatter data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in x_utm, y_utm, and backscatter (decibel) format, UTM 6 coordinates

EX1304: Northeast U.S. Canyons Exploration on NOAA Ship Okeanos Explorer between 20130708 and 20130725 (Leg I) and 20130731 and 20130817 (Leg II)

MGL1109bathyutm.asc: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Esri gridascii, UTM 6 coordinates

MGL1109bathygeo.sd: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in Fledermaus digital terrain format, geographic coordinates

MGL1109bathygeo.xyz: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, 100-meter gridded data in longitude, latitude, depth format, geographic coordinates

OCS Area Polygons

Multibeam bathymetry and acoustic backscatter data from the Alaskan region, Extended Continental Shelf Project, 2011 field season: Gulf of Alaska and Bering Sea