EM122 Water Column Sonar Data Collected During AT26-02
Cascadia Initiative Year 3, LEG 3 (At26-02, EM122). 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).
•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).
Dataset Citation
- Cite as: Woods Hole. 2013. 'EM122 Water Column Sonar Data Collected During AT26-02'. NOAA National Centers for Environmental Information. doi:10.7284/112092 [access date]
Dataset Identifiers
- AT26-02_EM122
- doi:10.7284/112092
- NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:AT26-02_EM122
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.wcd:AT26-02_EM122
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Ordering Instructions | Contact the NCEI Water Column Sonar Data Manager to order data. |
Distributor |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Water Column Sonar Data Manager NOAA National Centers for Environmental Information (303) 497-4742 wcd.info@noaa.gov |
Time Period | 2013-06-25T20:15:08 to 2013-07-08T19:06:33 |
Spatial Reference System | urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown |
Spatial Bounding Box Coordinates |
West: -126.9894938
East: -124.2691466
South: 40.25193455
North: 46.0328801
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Not planned |
Purpose | Recover 30 Lamont-Doherty Earth Observatory Ocean-bottom Seismometers (OBSs) |
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International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
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Last Modified: 2020-06-03
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov