EK500 Water Column Sonar Data Collected During DE9810
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title: EK500 Water Column Sonar Data Collected During DE9810
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date: 1998-09-10
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Anchor: DOI doi:10.7289/V5WW7FNP
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individualName: Michael Jech
organisationName: DOC/NOAA/NMFS/NEFSC> Northeast Fisheries Science Center
positionName: Research Fish Biologist
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abstract: NEFSC 1998 Atlantic Herring Acoustic/Midwater Trawl Survey (DE9810, EK500). The NEFSC Atlantic herring acoustic survey is a fisheries independent survey that provides scientific data for Atlantic herring assessments in the U.S. mid-Atlantic and New England regions. The survey is conducted in the fall on pre-spawning and spawning herring primarily in the Georges Bank region, but with other historical sites in the Gulf of Maine surveyed. The survey is a systematic design with parallel transects oriented perpendicular to bathymetric features. Midwater trawl sites are selected on an ad hoc basis to sample acoustic backscatter attributed to Atlantic herring as well as backscatter by other organisms. The primary gear is multifrequency Simrad echosounders, but midwater trawl, CTD, and a host of other scientific sensor data are collected ancillary to the acoustic data.
purpose: The NEFSC Atlantic herring acoustic survey provides fisheries independent abundance and biological data for the U.S. Atlantic herring assessment.
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organisationName: NOAA National Centers for Environmental Information
positionName: Water Column Sonar Data Manager
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voice: (303) 497-4742
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deliveryPoint: 325 Broadway, Mail Code E/NE42
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
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keyword: Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering
keyword: Earth Science > Oceans > Aquatic Sciences > Fisheries
keyword: Earth Science > Oceans > Ocean Acoustics
keyword: Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic
keyword: Earth Science > Biosphere > Ecosystems > Marine Ecosystems
keyword: Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic
keyword: Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems
keyword: Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
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keyword: In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
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otherConstraints: Cite as: Northeast Fisheries Science Center. 1998. 'EK500 Water Column Sonar Data Collected During DE9810'. NOAA National Centers for Environmental Information. doi:10.7289/V5WW7FNP [access date]
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otherConstraints: 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.
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otherConstraints: 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.
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useLimitation: 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.
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beginPosition: 1998-09-10T04:18:04
endPosition: 1998-10-11T09:17:29
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orderingInstructions: Contact the NCEI Water Column Sonar Data Manager to order data.
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name: Simrad EK500 data logged with BI500 system
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specification: Kongsberg/Simrad .raw files are generated by ME70, EK60 or ES60 instruments. They contain power and optionally angular position data with each beam/frequency identified by an independent channel. See the Simrad interface specification manual for further information. The .wcd files are generated by Kongsberg EM302 or EM122 instruments. See Kongsberg documentation for more information.
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description: Woods Hole Oceanographic Institution
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timePosition: 1998-08-26
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statement: Calibrated w/o calibration data
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nameOfMeasure: Horizontal Positional Accuracy
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DateTime: 1998-09-10T04:18:04
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individualName: Michael Jech
organisationName: DOC/NOAA/NMFS/NEFSC> Northeast Fisheries Science Center
positionName: Research Fish Biologist
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city: Woods Hole
administrativeArea: MA
postalCode: 02543
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electronicMailAddress: michael.jech@noaa.gov
role: (CI_RoleCode) principalInvestigator
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dataQualityInfo: (DQ_DataQuality)
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statement: The data files contain the echogram "Q" and single target detections "E" telegrams for 12 (T1), 38 (T2), and 120 (T3) kHz data. The sample angle "B", power "W", volume backscatter "V", and TS "P" data for the 38 kHz were collected, and are available upon request from the NEFSC.
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acquisitionInformation: (MI_AcquisitionInformation)
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description: The EK500 is a triple frequency scientific echo sounder with a range of available single frequency transducers. This echo sounder was widely used by NOAA Marine fisheries researchers until its replacement by the Simrad EK60 echo sounder
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date: 2014-09-18
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description: The NOAA Ship DELAWARE II conducts fishery and living marine resource research in support of NOAA's National Marine Fisheries Service (NMFS), Northeast Fisheries Science Center's (NEFSC) Woods Hole Laboratory in Woods Hole, MA. The ship's normal operating area is the Gulf of Maine, Georges Bank, and the continental shelf and slope from Southern New England to Cape Hatteras, NC. Typical assessment work includes groundfish assessment surveys and Marine Resources Monitoring, Assessment and Prediction (MARMAP) surveys. Research conducted from the DELAWARE II provides an understanding of the physical and biological processes that control year-class strength of key economical fish species. The vessel is operated by NOAA Marine and Aviation Operations.
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city: Norfolk
administrativeArea: VA
postalCode: 23510-1145
country: USA
electronicMailAddress: David.A.Score@noaa.gov
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name: Marine Operations Center - Atlantic
description: NOAA Marine Operations Center-Atlantic (MOC-A) serves as a homeport for one NOAA survey ship and provides administrative, engineering, maintenance and logistical support to NOAA's Atlantic fleet.
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type: multibeam
description: The Simrad ME70 is a high resolution scientific multibeam echo sounder with very low sidelobe levels. It is dedicated for collection of data in the water column. The multibeam echo sounder combines the large and flexible sampling volume of the multibeam swath with the accuracy of the quantitative scientific echo sounder. A bathymetric option is also available to provide a high resolution seabed mapping capability, and the possibility to study the fish habitat.
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deliveryPoint: Strandpromenaden 50
city: Horten
postalCode: 3191
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code: Simrad EK60
type: singlebeam
description: The Simrad EK60 Scientific Sounder system is a new generation fishery researchtool, based on experience from the EK500. The new electronic hardware is combined with up to date PC processing and Windows operation. The EK60 provides facilities for accurate echo sounding, data storage, data analysis and reporting results. The system communication is through Ethernet, which gives flexibility in the location of the EK60 system units and allows easy access to data from other instruments or stations on a vessel network. A post processing software, BI60, is also included in the EK60 system.