Oceanographic Survey of Cross Seamount and Control Sites (OES0703L1, 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), with an approximately
400 m deep plateau, 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, and water was sampled at discrete depths
during each cast for chloropigment determinations. 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 a RD Instruments Acoustic Doppler Current Profiler (ADCP) operating
at 75 kHz frequency. Biological backscatter were recorded using the EK60 echosounder
system (38, & 120 kHz) along predetermined transects.
- Cite as: Pacific Islands Fisheries Science Center (2007): Water Column Sonar Data Collection (OES0703L1, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5CR5R94 [access date]
- OES0703L1_EK60
- doi:10.7289/V5CR5R94
gov.noaa.ngdc.mgg.wcd:OES0703L1_EK60
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Ordering Instructions | Contact the Water Column Sonar Data Manager to order data |
Distributor | Water Column Sonar Data Manager NOAA National Centers for Environmental Information (303) 497-4742 wcd.info@noaa.gov |
Dataset Principal Investigator | Reka Domokos Research Oceanographer PIFSC 808.725.5368 reka.domokos@noaa.gov |
Time Period | 2007-04-21T23:25:01 to 2007-05-11T21:55:52 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West:-158.4196
East:-155.93205
South:18.616
North:21.2795607744
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Documentation links not available. |
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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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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Instrument keywords | Global Change Master Directory (GCMD) Instrument Keywords
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Place keywords | International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas"
publication S-23)
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Last Modified: 2017-05-30
For questions about the information on this page, please email:wcd.info@noaa.gov