EK60 Water Column Sonar Data Collected During SE1104

Metadata Updated: November 12, 2020

Kona Integrated Ecosystem Assessment Survey (SE1104, EK60). This cruise accomplished the following objectives: Oceanographic data were collected from a total of 25 CTD casts while continuous TSG and ADCP measurements were taken 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. Chlorophyll was measured for ten discrete samples per CTD using a bench top Turner 10-AU fluorometer. Water samples were preserved for post-cruise flow cytometry to determine phytoplankton size structure. Biological backscatter was monitored using the EK60 echosounder system, both during trawl operations and along 17 acoustic transects (including at least one daytime and one nighttime transit of each transect). Twelve nighttime oblique mid-water trawls were conducted, with replicate trawls at each of six sites. These trawls all targeted the shallow sound scattering layer. Data on cetacean distribution, school size, and school composition were collected with a towed passive acoustic array on 14 transects, including both a daytime and nighttime transit of each transect. Daytime visual cetacean surveys were conducted to help develop habitat envelope models for the Kona region. Fourteen casts of a DIDSON imaging sonar were conducted to collect high resolution information on the density of high sonic scattering layers.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date June 3, 2020
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) July 2, 2011 (creation), February 1, 2015 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NGDC MGG Sonar Water Column

Additional Metadata

Resource Type Series
Metadata Date June 3, 2020
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) July 2, 2011 (creation), February 1, 2015 (publication)
Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
Contact Email
Guid gov.noaa.ngdc.mgg.wcd:SE1104_EK60
Access Constraints Cite as: Pacific Islands Fisheries Science Center. 2011. 'EK60 Water Column Sonar Data Collected During SE1104'. NOAA National Centers for Environmental Information. doi:10.7289/V5FJ2DR7 [access date], Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Resource may not be available for up to one year after initial collection.
Bbox East Long -155.913810019342
Bbox North Lat 20.106049945212
Bbox South Lat 19.2256000486427
Bbox West Long -156.679269967658
Coupled Resource
Frequency Of Update notPlanned
Licence 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.
Metadata Language eng; USA
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System urn:ogc:def:crs:EPSG::4326
Spatial Harvester True
Temporal Extent Begin 2011-07-02T00:00:00
Temporal Extent End 2011-07-13T00:00:00

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