Deep-Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND)- DP02 (EK80)
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title: Deep-Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND)- DP02 (EK80)
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date: 2015-08-09
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Anchor: DOI doi:10.7289/V5RN35TF
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organisationName: Gulf of Mexico Research Initiative (GoMRI)
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country: USA
electronicMailAddress: kevin.shaw@gomri.org
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abstract: Patterns in acoustically derived biological scatter through the water column will be collected with multi-frequency scientific echosounders (Simrad EK60) operating at 18kHz, 38kHz, 70kHz and 120kHz following protocols developed during the NOAA NRDA DAP data collection operations. Specifically, during each cruise, transducers will be installed on a rigid pole mounted to the side of the ship, and calibrated at sea for operating conditions following protocols developed by Dr. Boswell during the ONSAP/DAP cruises. The dynamics of the mesopelagic scattering community will be examined through the depth dependent scattering responses at both frequencies (18 and 38kHz) as well as through the difference between the mean volume backscattering strength (MVBS; in dB) at 18 kHz and 38 kHz (dMVBS(18-38)). In addition, scatterers in the upper water column (~150m) will be examined by analyzing the all four available frequencies. By integrating both methods, the magnitude of biological scattering at discrete-depth intervals will be classified into major taxonomic components (e.g., fluid-like crustaceans, swimbladdered fishes) based on resonant properties and behavior. The biological data and ship data collected during this cruise are available in GRIIDC datasets R4.x257.226:0001 and R4.x257.226:0011, respectively.
purpose: o examine the spatial and temporal dynamics of deep sea nekton in the Gulf of Mexico through a multidisciplinary approach.
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individualName: Kevin Boswell
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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
keyword: Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
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keyword: Gulf of Mexico
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keyword: GEOGRAPHIC REGION > GLOBAL
keyword: Vertical Location > VERTICAL LOCATION > SEA FLOOR
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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: Kevin Boswell, Florida International University (2015): Water Column Sonar Data Collection (DP02, EK80). National Centers for Environmental Information, NOAA. doi:10.7289/V5RN35TF [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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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: 2015-08-09T07:11:20
endPosition: 2015-08-21T20:10:57
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name: Simrad EK80 raw (.raw) format
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individualName: Kevin Boswell
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title: Simrad EK80 Echosounder
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description: The Simrad EK80 is the most modern "high end" split beam scientific echo sounder in the fishery scientific market. Based on more than 60 years of research and development in close collaboration with leading marine scientists this wide band echo sounder system has succeeded the famous EK60, which became an international standard for fish stock assessment. The Simrad EK80 can operate a large number of frequencies simultaneously ranging from 10 to 500 kHz. A wide selection of high quality accurate transducers is available.
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description: Research vessel owned by the University of Southern Mississippi and operated in a cooperative agreement between University of Southern Mississippi and Louisiana Universities Marine Consortium.
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deliveryPoint: Strandpromenaden 50
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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.