Back to Collection NOAA/NESDIS/NGDC/MGG/Sonar_Water_Column

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Ocean Observatories Initiative (OOI): Argentine Basin (AT26-30, EM122)
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hierarchyLevelName: Water Column Sonar Series-Level Metadata
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individualName: Chuck Anderson
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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
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country: USA
electronicMailAddress: wcd.info@noaa.gov
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dateStamp: 2017-05-30
metadataStandardName: ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
metadataStandardVersion: ISO 19115-2:2009(E)
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title: Ocean Observatories Initiative (OOI): Argentine Basin (AT26-30, EM122)
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date: 2015-03-11
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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: South Pacific Ocean
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title: International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
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date: 2010-08-24
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description: Publication of Sea Areas is maintained by IHO.
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keyword: GEOGRAPHIC REGION > GLOBAL
keyword: Vertical Location > VERTICAL LOCATION > SEA FLOOR
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title: Global Change Master Directory (GCMD) Location Keywords
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function: (CI_OnLineFunctionCode)information
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keyword: In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
type: (MD_KeywordTypeCode)instrument
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title: Global Change Master Directory (GCMD) Instrument Keywords
date: (CI_Date)
date: 2018-02-27
dateType: (CI_DateTypeCode)publication
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otherConstraints: Cite as: Rolling Deck to Repository (R2R) Program (2015) Water Column Sonar Data Collection (AT26-30, EM122). National Centers for Environmental Information, NOAA. doi:10.7284/900595 [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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otherConstraints: Resource may not be available for up to one year after initial collection.
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code: AT26-30
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topicCategory: (MD_TopicCategoryCode)oceans
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westBoundLongitude: -53.24836
eastBoundLongitude: -41.96553
southBoundLatitude: -46.9315
northBoundLatitude: -37.09802
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beginPosition: 2015-03-11T20:29:42
endPosition: 2015-03-24T10:57:25
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distributionInfo: (MD_Distribution)
distributionFormat: (MD_Format)
name: Kongsberg EM122 water column data (.wcd) format
version: 1
specification: Kongsberg EM122 .wcd files. See the EM122 documentation for detailed format specification. Note: frequently navigation datagrams are not recorded in the EM122 .wcd files. See corresponding .all file for navigation data.
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individualName: Chuck Anderson
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
positionName: Water Column Sonar Data Manager
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electronicMailAddress: wcd.info@noaa.gov
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fees: Free
orderingInstructions: Contact the NCEI Water Column Sonar Data Manager to order data
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linkage: http://maps.ngdc.noaa.gov/viewers/water_column_sonar/
name: Water Column Sonar Data Map Viewer
description: Interactive map viewer to allow discovery and access to water column sonar data
function: (CI_OnLineFunctionCode)search
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timePosition: 2015-11-30
levelDescription: (MD_ScopeDescription)
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title: Kongsberg EM122 Multibeam Echosounder
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description: EM 122 multibeam echosounder is a high performance echosounder for deep water mapping with up to 288 simultaneous beams. The EM 122 is designed to perform seabed mapping to full ocean depth with an unsurpassed resolution, coverage and accuracy. The system is cost effective, reliable, and easily operated. The design of the EM 122 is based on more than 50 years of hydrographic experience with echo sounders, sonars and underwater positioning for civilian and military use. It is the latest model in a series of deep sea multibeam echo sounders started with the EM 12 in 1990 and followed by the EM 121 and the EM 120, of which about 40 systems are operational. It uses the same transducers as in the EM 120 but with new electronics and software. Compared with the EM 120 the EM 122 has up to four times the resolution in terms of sounding density through inclusion of multiping capability and more than twice the number of detections per swath. High density signal processing is a major improvement, to keep the acoustic footprint size small even for the outer beams in the swath. In typical ocean depths a sounding spacing of about 50 m across and along is achievable. The achievable swath width of the EM 122 is in the order of 30,000 m, or about 25% more than possible with the EM 120. This is obtained by using long FM chirps which gains about 15 dB in signal to noise ratio compared to CW pulses. The EM 122 is a complete system. All necessary sensor interfaces, data displays for quality control and sensor calibration, seabed visualization, and data logging are a standard part of the system, as is integrated seabed acoustical imaging capability (side scan). Including a higher frequency multibeam echo sounder such as EM 710 with the EM 122 system can give a total system solution meeting the strictest IHO requirements for all water depths. As proven with the EM 120, an accuracy of better than 0.2% of depth in deep waters is readily achievable with the EM 122.
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description: EM 122 multibeam echosounder is a high performance echosounder for deep water mapping with up to 288 simultaneous beams. The EM 122 is designed to perform seabed mapping to full ocean depth with an unsurpassed resolution, coverage and accuracy. The system is cost effective, reliable, and easily operated. The design of the EM 122 is based on more than 50 years of hydrographic experience with echo sounders, sonars and underwater positioning for civilian and military use. It is the latest model in a series of deep sea multibeam echo sounders started with the EM 12 in 1990 and followed by the EM 121 and the EM 120, of which about 40 systems are operational. It uses the same transducers as in the EM 120 but with new electronics and software. Compared with the EM 120 the EM 122 has up to four times the resolution in terms of sounding density through inclusion of multiping capability and more than twice the number of detections per swath. High density signal processing is a major improvement, to keep the acoustic footprint size small even for the outer beams in the swath. In typical ocean depths a sounding spacing of about 50 m across and along is achievable. The achievable swath width of the EM 122 is in the order of 30,000 m, or about 25% more than possible with the EM 120. This is obtained by using long FM chirps which gains about 15 dB in signal to noise ratio compared to CW pulses. The EM 122 is a complete system. All necessary sensor interfaces, data displays for quality control and sensor calibration, seabed visualization, and data logging are a standard part of the system, as is integrated seabed acoustical imaging capability (side scan). Including a higher frequency multibeam echo sounder such as EM 710 with the EM 122 system can give a total system solution meeting the strictest IHO requirements for all water depths. As proven with the EM 120, an accuracy of better than 0.2% of depth in deep waters is readily achievable with the EM 122.
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description: For over twenty years, Teledyne RD Instruments has been the preeminent supplier of Acoustic Doppler Current Profiling (ADCP) instrumentation for open ocean applications. Teledyne RDIƒ¿‚¿ƒ¿‚¢ƒ¿‚¿ƒ¿‚¿ƒ¿‚¿ƒ¿‚¿s vessel-mounted Ocean Surveyor family of ADCPs continues to raise the bar, collecting detailed maps of the distribution of water currents and suspended materials through the water column and along the shipƒ¿‚¿ƒ¿‚¢ƒ¿‚¿ƒ¿‚¿ƒ¿‚¿ƒ¿‚¿s path - at depths and resolutions previously considered unattainable. In real time, the ADCP is also used to aid in situ decision-making, to adapt field operations, and to understand current regime characteristics.