EK60 Water Column Sonar Data Collected During SE0803
Oceanographic Survey of Cross Seamount and Control Sites (SE0803, EK60). The goals of the cruise were to collect acoustic backscatter and oceanographic data at Cross Seamount (18°43.285’ N, longitude 158° 15.710’ W) and at control sites in the surrounding environment. Data collected consisted of CTD casts, trawl samples, and continuous monitoring of currents and biological acoustic backscatter. CTD cats were conducted at predetermined stations. CTDs were equipped with oxygen sensors and fluorometers. Trawl operations were conducted at predetermined stations using a Cobb trawl at depths of the shallow (nighttime) and deep (day and nighttime) sound scattering layers. Currents were continuously monitored using an RD Instruments Acoustic Doppler Current Profiler (ADCP) operating at 75 kHz frequency. Biological backscatter were recorded along predetermined transects using the EK60 echosounder system at 38, 70, and 120 kHz frequencies.
Dataset Citation
- Cite as: Pacific Islands Fisheries Science Center. 2008. 'EK60 Water Column Sonar Data Collected During SE0803'. NOAA National Centers for Environmental Information. doi:10.7289/V5HD7SM4 [access date]
Dataset Identifiers
- SE0803_EK60
- doi:10.7289/V5HD7SM4
- NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:SE0803_EK60
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.wcd:SE0803_EK60
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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 | 2008-04-17T03:02:45 to 2008-05-09T22:15:29 |
Spatial Reference System | urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown |
Spatial Bounding Box Coordinates |
West: -158.432583333
East: -155.92665
South: 18.5532333333
North: 21.2679236667
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Not planned |
Purpose | The scientific objectives of this cruise were to investigate the dynamic interactions of the North Equatorial Current in the lee of the Main Hawaiian Islands with the abrupt topography of Cross Seamount, and their effects on seamount associated organisms. During the cruise, surveys were conducted to study the effects of the mesoscale seamount environment on the distribution and biomass of bigeye tuna and its forage, micronekton. |
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Global Change Master Directory (GCMD) Science Keywords
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Global Change Master Directory (GCMD) Instrument Keywords
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International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
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Last Modified: 2021-09-14
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