Kona Integrated Ecosystem Assessment Survey (SE1401, EK60)
This cruise accomplished the following objectives: Oceanographic data were collected from a total of 6 CTD casts and continuous TSG measurements along a predefined grid off the west coast of Hawaii to assess the influence of physical dynamics on the region's biological productivity. CTD-mounted fluorometer measurements were carried out by two fluorometers. Biological backscatter was monitored using the EK60 echosounder system, both during trawl operations and along 7 acoustic transects (including at least one daytime and one nighttime transit of each transect). One nighttime oblique mid-water trawl was conducted prior to the net being damaged beyond repair by contact with the seafloor. Four casts of a DIDSON imaging sonar were conducted to collect high resolution information on the density of high sonic scattering layers. An ROV was deployed 5 times to investigate acoustic scattering layers and adjacent layers. Deep handline jigging was accomplished during day and night to investigate scattering layer macrofauna. Data on cetacean distribution, school size, and school composition were collected via daytime visual surveys on 9 days of transects coupled with several days of small boat survey effort. Two HARP units were deployed for passive autonomous detection of cetaceans and several sonabuoys were also deployed during daytime operations for cetacean detection and identification.
Dataset Citation
- Cite as: Pacific Islands Fisheries Science Center (2014): Water Column Sonar Data Collection (SE1401, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V52805JQ [access date]
Dataset Identifiers
- SE1401_EK60
- doi:10.7289/V52805JQ
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.wcd:SE1401_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 | Donald Kobayashi Research Fisheries Biologist PIFSC 808.725.5394 donald.kobayashi@noaa.gov |
Time Period | 2014-03-18T00:00:00 to 2014-03-28T00:00:00 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West: -157.933489569289
East: -155.910950379924
South: 19.3292103687572
North: 21.2553495766868
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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 are to collect information to describe the physical, chemical, and oceanographic environment as well as observe cetacean activity along the west coast of Hawaii as support for the monitoring component of the NOAA Kona Region IEA. The proposed survey grid will allow comparison of oceanographic features between the Kohala shelf region to the north and the deeper offshore regiono to the south as well as near shore and offshore. |
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International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
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Last Modified: 2017-10-02
For questions about the information on this page, please email: wcd.info@noaa.gov
For questions about the information on this page, please email: wcd.info@noaa.gov