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EK60 Water Column Sonar Data Collected During MF0706

Metadata Updated: June 9, 2023

Oregon - Washington Sardine Survey. Fourteen primary stations were occupied after dusk and prior to sunrise. Daytime activities included occupying a transect between survey lines using the CUFES and the EK-60 sounder. At each night station the following activities were performed:

a. Deployment of a Seabird 9/11+ down to 200 meters, bottom depth permitting. The CTD collected depth, temperature, conductivity and chlorophyll fluorescence data.

b. A standard Pairovet cast. The Pairovet net was fished from 70 meters to the surface (depth permitting) using paired 25 cm diameter 150 μm mesh nets. The technical requirements for the Pairovet tow was: descent rate of 70 meters per minute, a terminal depth time of 10 seconds and an ascent rate of 70 meters per minute.

c. A CalBOBL (CalCOFI Bongo) standard oblique plankton tow with 300 meters of wire out, depth permitting, used paired 505 :m mesh nets with 71 cm diameter openings. The technical requirements for this tow were: Descent rate of 50 meters per minute, ascent rate of 20 meters per minute. All tows with ascending wire angles lower than 38° or higher than 51° in the final 100 meters of wire were repeated.

d. Standard meteorological data including SST, wind speed and direction, wave height and direction, cloud cover, relative humidity, air temperature and barometric pressure.

e. During all transit between stations continuous measurements were made of pelagic fish eggs (CUFES) and acoustic targets using the EK-60.

f. A Nordic 264 mid-water trawl using 3.0 m² foam core doors was towed at the surface for 30 minutes traveling at approximately 3.5 knots. Every catch was sorted and target species were sampled.

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.

Downloads & Resources

Dates

Metadata Date September 14, 2021
Metadata Created Date November 10, 2022
Metadata Updated Date June 9, 2023
Reference Date(s) June 5, 2007 (creation), March 19, 2018 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NGDC MGG Sonar Water Column

Additional Metadata

Resource Type Series
Metadata Date September 14, 2021
Metadata Created Date November 10, 2022
Metadata Updated Date June 9, 2023
Reference Date(s) June 5, 2007 (creation), March 19, 2018 (publication)
Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
Contact Email
Guid gov.noaa.ncei.wcd:MF0706_EK60
Access Constraints Cite as: NOAA Southwest Fisheries Science Center. 2007. 'EK60 Water Column Sonar Data Collected During MF0706'. NOAA National Centers for Environmental Information. https://doi.org/10.25921/rnmq-wg11 [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 -123.88187
Bbox North Lat 47.02129
Bbox South Lat 42.94134
Bbox West Long -125.92126
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 5b281171-8e20-4ba3-90bb-4dcfaa959dad
Harvest Source Id ab8b0290-e4db-4a00-89f2-4e427c2054b2
Harvest Source Title NGDC MGG Sonar Water Column
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.
Lineage Calibrated w/o calibration data
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-125.92126, 42.94134], [-123.88187, 42.94134], [-123.88187, 47.02129], [-125.92126, 47.02129], [-125.92126, 42.94134]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System urn:ogc:def:crs:EPSG::4326
Spatial Harvester True
Temporal Extent Begin 2007-06-05T22:20:24
Temporal Extent End 2007-06-10T22:21:26

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