Deep-Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND)- DP02 (EK80)
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.
Dataset Citation
- 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]
Dataset Identifiers
- DP02_EK80
- doi:10.7289/V5RN35TF
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.wcd:DP02_EK80
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Ordering Instructions | Contact the NCEI 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 | Kevin Boswell Professor Florida International University 305-919-4009 kevin.boswell@fiu.edu |
Time Period | 2015-08-09T07:11:20 to 2015-08-21T20:10:57 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West: -89.06371
East: -86.47995
South: 26.84693
North: 29.04046
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Not planned |
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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International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
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Last Modified: 2017-05-30
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