National Geophysical Data Center (NGDC), NOAA Satellite and Information Service

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Cascadia Initiative Year 3, LEG 3

Recover 30 Lamont Doherty Earth Observatory Ocean-bottom Seismometers (OBSs) of 3 different types: ?10 TRM shallow-water OBSs with Trillium compact 3-component absolute pressure gauge installed at depths from 200-1000m (nominal). Recovered using remotely operated vehicle Jason. ?10 Trawl-Resistant Mount (TRM) shallow-water OBS with Trillium compact 3-component seismometer, absolute pressure gauge (APG), acoustic release/pop-up buoy with Jason backup. ?10 LDEO deep water OBSs with APG. Recover by sending an acoustic release command to drop the anchor. OBS then floats to the surface a nominal rate of 50m/min. Referred to as LDEO-DW below. ?Iftime allows, discover and recover 2 Woods Hole Oceanographic Institution deep water OBSs. Additional Activities: Acquire swath bathymetry, including water column data, in transit between all stations and port. Acquire other underway data (e.g. meterology, acoustic doppler current profiler).

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Distribution Formats
  • >Kongsberg EM122 raw files (Version: 1)
Distributor DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Principal Investigator Anne Trehu
Oregon State University
541-737-2655
trehu@coas.oregonstate.edu
Documentation links not available.
Resource Provider
  • DOC/NOAA/NESDIS/NGDC - National Geophysical Data Center
Publisher
  • DOC/NOAA/NESDIS/NGDC - National Geophysical Data Center
Date(s)
  • creation: 2013-06-25
Dataset Progress Status Complete
Data Update Frequency: Not planned
Purpose: Recover 30 Lamont-Doherty Earth Observatory Ocean-bottom Seismometers (OBSs)
Use Limitations
  • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
  • These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
  • Not subject to copyright protection within the United States.
Time Period: 2013-06-25T20:15:08  to  2013-07-08T19:06:33
Spatial Reference System: urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates:
N: 46.0328801
S: 40.25193455
E: -124.2691466
W: -126.9894938
Spatial Coverage Map:
Themes
  • EARTH SCIENCE > Oceans > Ocean Acoustics > Acoustic Scattering
  • EARTH SCIENCE > Oceans > Aquatic Sciences > Fisheries
  • EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • EARTH SCIENCE > Biosphere > Aquatic Ecosystems
  • EARTH SCIENCE > Biosphere > Aquatic Ecosystems > Marine Habitat
  • EARTH SCIENCE > Biosphere > Aquatic Ecosystems > Benthic Habitat
  • EARTH SCIENCE > Biosphere > Aquatic Ecosystems > Pelagic Habitat
  • EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
Data Centers
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce
Instruments
  • In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
Places
  • North Pacific Ocean
  • Global
  • Sea Floor
Use Constraints No constraint information available
Fees
  • Free
Lineage Statement Unknown

Metadata Last Modified: 2014-07-16

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