2011-034-FA (CMHRP activity #2376)

Field Activity 2011-034-FA

Identifier

2011-034-FA

Purpose

Collect seismic reflection and refraction data in the Bering Sea in order to apply the sediment thickness formula of Article 76 of the Convention on the Law of the Sea and determine the outer limits of the U.S. extended continental shelf.

Equipment or personnel only. Data, if any, are managed under a different field activity.

Location

Alaska, Bering Sea, Aleutian Basin

Summary

MCS Seismic, Gravity, sonobuoy refraction, magnetometer, XBT, CTD, water samples, multi-beam bathymetry, Marine Mammal observations.

Comments

Chief Scientist Dr. Ginger Barth from Pacific Coastal and Marine Science Center (USGS) Project = Law of the Sea,

Related activities

L1111BS: Multi-center

Platform

Marcus G. Langseth

235 feet long, 56-foot beam, 19.5 foot draft. Built in 1991.

Itinerary

Start	Dutch Harbor, AK	2011-08-07
End	Dutch Harbor, AK	2011-09-01
Days in the field	26

Bounds

West	-179.149
East	-167.06878788
North	61.42475844
South	55.03923849

Personnel

Organization

Equipment or personnel support provided by

USGS, Woods Hole Coastal and Marine Science Center(WHCMSC)

384 Woods Hole Road

Quissett Campus

Woods Hole, MA02543-1598

(508) 548-8700

Principal investigators

Thomas F O'Brien

Crew members

Thomas F O'Brien	Scientist, Staff
Wayne E Baldwin	Scientist, Staff

Information specialist(s)

Wayne E Baldwin

Specialist, Information

Affiliate principal

Dr. Ginger Barth - USGS; Dr. Warren Wood - NRL; Patrick Hart - USGS

Data types and categories

Data category:	Location-Elevation
Data type:	Navigation

Equipment used

Equipment	Usage description	Data types	Datasets
GPS (wh)		Navigation	(no data reported)

Datasets

Datasets not currently associated with specific equipment

Dataset name	Description	Dataset contact
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	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 aboard the R/V Marcus G. Langseth. The data have been reduced for position, elevation, orientation, water-column sound-speed, and refraction effects.	Ginger Barth