CHIRP Subbottom Profiler data for the U.S. Atlantic margin.


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            title:  CHIRP Subbottom Profiler data for the U.S. Atlantic margin.
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                date:  2012-07-03
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            presentationForm:  (CI_PresentationFormCode) SEG-Y KNUDSEN 320BR CHIRP SUBBOTTOM DATA
        abstract:  Knudsen 3260 CHIRP subbottom profiler - CHIRP Subbottom Profiler data were collected in Raw Knudsen SEG-Y Datagram format.
        purpose:  The National Oceanic and Atmospheric Administration (NOAA), on behalf of the United States Government, has a requirement to carry out surveys of specific regions on the continental margin (slope and rise) in the U.S. Atlantic continental margin in order to obtain Raw Knudsen SEG-Y Datagram. These data are required to support any potential claim for an extended continental shelf by the United States under United Nations Convention on the Law of the Sea (UNCLOS) Article 76. The requirement is for the collection and processing of full-coverage multibeam sonar data in water depths of approximately 2000 to 5500 m in order to precisely define the location of the 2500-m isobath and the "foot of the slope" as defined under UNCLOS Article 76. As part of their NOAA-funded research program, University of New Hampshire (UNH) researchers oversaw data acquisition, processing and archiving of the data collected during the cruise.
        credit:  Andrew A. Armstrong - UNH/CCOM-JHC : Center for Coastal and Ocean Mapping/Joint Hydrographic Center, University of New Hampshire
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            keyword:  Marine Geophysics > Shallow Subbottom
            keyword:  EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS > PLATE TECTONICS
            keyword:  EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > ACOUSTIC REFLECTIVITY
            keyword:  EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > ACOUSTIC VELOCITY
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            keyword:  Foot of the slope
            keyword:  EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS > PLATE TECTONICS
            keyword:  EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > ACOUSTIC REFLECTIVITY
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            keyword:  U.S. Atlantic margin
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            useLimitation:  While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, UNH/CCOM-JHC : Center for Coastal and Ocean Mapping/Joint Hydrographic Center, University of New Hampshire 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. UNH/CCOM-JHC : Center for Coastal and Ocean Mapping/Joint Hydrographic Center, University of New Hampshire makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
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            otherConstraints:  Use Constraints: Please recognize the UNH/CCOM-JHC : Center for Coastal and Ocean Mapping/Joint Hydrographic Center, University of New Hampshire as the source of these data. The data are not intended for navigational purposes. The data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Neither the University of New Hampshire nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights.
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            title:  Geophysical Trackline Data ArcGIS Map Service
            date:  (CI_Date)
                date:  2012-12-12
                dateType:  (CI_DateTypeCode) creation
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://ngdc.noaa.gov/mgg/geodas/trackline.html
                        name:  Marine Geophysical Trackline Data at NCEI
                        description:  Please see website for more information about Marine Geophysical Trackline Data.
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://ngdc.noaa.gov/geomag/aromag.shtml
                        name:  Airborne Magnetic Data
                        description:  Please see website for more information about airborne magnetic data.
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://noaa.maps.arcgis.com/home/item.html?id=9548e62e560d4fcc8183337c54124747
                        name:  NOAA GeoPlatform Entry for Trackline Geophysical Data
                        description:  NOAA GeoPlatform listing for Trackline Geophysical Data
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) publisher
        abstract:  The Marine Trackline Geophysics database contains bathymetry, magnetics, gravity and seismic navigation data collected during marine cruises from 1939 to the present. Coverage is worldwide. Data sources include both US and foreign oceanographic institutions and government agencies. This map service shows tracks (both ship and airborne) for all geophysical surveys in the database, split into sub-layers by data type. This dynamic map service allows these sub-layers to be toggled on/off: All Survey Types (0) - visible by default; Bathymetry (1); Gravity (2); Magnetics (3); Multi-Channel Seismics (4); Seismic Refraction (5); Shot-Point Navigation (6); Side Scan Sonar (7); Single-Channel Seismics (8); Subbottom Profile (9); Aeromagnetic Surveys (10). Separate cached (tiled) map services are also available for several of these layers: All Survey Types (http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/trackline_all_parameters/MapServer), Bathymetry (http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/trackline_bathymetry/MapServer), Gravity (http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/trackline_gravity/MapServer), Magnetics (http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/trackline_magnetics/MapServer), and Single-Channel Seismics http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/trackline_single_channel_seismics/MapServer).
        pointOfContact:  (CI_ResponsibleParty)
            individualName:  Jesse Varner
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  Jesse.Varner@noaa.gov
            role:  (CI_RoleCode) pointOfContact
        descriptiveKeywords:  (MD_Keywords)
            keyword:  DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
            keyword:  DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
            keyword:  DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Service Keywords
                date:  (CI_Date)
                    date:  2018-03-15
                    dateType:  (CI_DateTypeCode) publication
                edition:  8.6
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA)
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            city:  Greenbelt
                            administrativeArea:  MD
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
        resourceConstraints:  (MD_Constraints)
            useLimitation:  These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: http://www.nauticalcharts.noaa.gov.
        serviceType:
          LocalName:  ArcGIS Map Service
        serviceTypeVersion:  10.3
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                extentTypeCode:  1
                westBoundLongitude:  -180
                eastBoundLongitude:  180
                southBoundLatitude:  -90
                northBoundLatitude:  90
        couplingType:  (SV_CouplingType) tight
        containsOperations:  (SV_OperationMetadata)
            operationName:  ArcGIS Server REST endpoint for dynamic map service
            DCP: (unknown)
            connectPoint:  (CI_OnlineResource)
                linkage: https://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/trackline_combined_dynamic/MapServer
                protocol:  http
                applicationProfile: http://www.geoplatform.gov/spec/esri-map-rest
                name:  Geophysical Trackline Data ArcGIS Dynamic Map Service
                description:  REST endpoint for Geophysical Trackline Data dynamic map service
                function:  (CI_OnLineFunctionCode) search
        containsOperations:  (SV_OperationMetadata)
            operationName:  WMS Get Capabilities
            DCP:
            connectPoint:  (CI_OnlineResource)
                linkage: https://maps.ngdc.noaa.gov/arcgis/services/web_mercator/trackline_combined_dynamic/MapServer/WMSServer?request=GetCapabilities&service=WMS
                protocol:  http
                applicationProfile: http://opengis.net/spec/wms
                name:  Geophysical Trackline Data Web Map Service (WMS)
                description:  Capabilities document for Open Geospatial Consortium Web Map Service for Geophysical Trackline Data
                function:  (CI_OnLineFunctionCode) search
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    distributionInfo:  (MD_Distribution)
        distributionFormat:  (MD_Format)
            name:  Raw Knudsen SEG-Y Datagram
            version: (unknown)
            fileDecompressionTechnique:  None (transfer size in MB)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  User Services
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  303-497-6826
                        facsimile:  303-497-6513
                    address:  (CI_Address)
                        deliveryPoint:  325 Broadway
                        city:  Boulder
                        administrativeArea:  CO
                        postalCode:  80305-3328
                        country:  USA
                        electronicMailAddress:  ngdc.info@noaa.gov
                    hoursOfService:  8am-5pm, Monday through Friday
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  None
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Trackline Team
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  303 497-6826
                        facsimile:  303 497-6513
                    address:  (CI_Address)
                        deliveryPoint:  325 Broadway
                        city:  Boulder
                        administrativeArea:  CO
                        postalCode:  80305-3328
                        country:  USA
                        electronicMailAddress:  trackline.info@noaa.gov
                    hoursOfService:  8:00 - 5:00 Mountain
                role:  (CI_RoleCode) pointOfContact
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: http://ccom.unh.edu/ftp
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: https://maps.ngdc.noaa.gov/viewers/geophysics/
                name:  Geophysical Survey Data Viewer
                description:  An interactive map of tracklines providing access to marine geophysical survey data (bathymetry, gravity, magnetics, seismics), and aeromagnetic surveys in the archive.
                function:  (CI_OnLineFunctionCode) search
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: https://www.ngdc.noaa.gov/trackline/request/?surveyIds=RB1202
                name:  Request Trackline Data
                description:  Download seismic data from this cruise.
                function:  (CI_OnLineFunctionCode) download
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) repository
            levelDescription:  (MD_ScopeDescription)
                other:  NOAA National Centers for Environmental Information
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
                dateTime:
                  DateTime:  2015-04-22T00:00:00
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) series
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Horizontal Positional Accuracy Report
            evaluationMethodDescription:  Horizontal positioning of the vessel was determined using Differential-aided DGPS integrated into a POS/MV model 320 version 4 system. Positioning is accurate to better than 0.5 meters (at 95% confidence) during all surveying. All positioning is referenced to the WGS84 Datum.
            result: (missing)
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Vertical Positional Accuracy Report
            evaluationMethodDescription:  Depth errors are within 0.1% of water depth.
            result: (missing)
        report:  (DQ_CompletenessCommission)
            evaluationMethodDescription:  Complete
            result: (unknown)
        report:  (DQ_ConceptualConsistency)
            measureDescription:  Unknown
            result: (unknown)
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  RAW data, not processed
                dateTime:
                  DateTime:  2012-07-19T00:00:00
                processor:  (CI_ResponsibleParty)
                    individualName:  James V. Gardner
                    organisationName:  UNH/CCOM-JHC : Center for Coastal and Ocean Mapping/Joint Hydrographic Center, University of New Hampshire
                    positionName:  Research Professor
                    contactInfo:  (CI_Contact)
                        phone:  (CI_Telephone)
                            voice:  (603) 862-3473
                            facsimile:  (603) 862-0834
                        address:  (CI_Address)
                            deliveryPoint:  Chase Ocean Engineering Lab, 24 Colovos Road
                            city:  Durham
                            administrativeArea:  NH
                            postalCode:  03824
                            country:  USA
                            electronicMailAddress:  jim.gardner@unh.edu
                        hoursOfService:  9:00 AM - 5:00 PM Eastern
                    role:  (CI_RoleCode) pointOfContact
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) annually
        maintenanceNote:  This metadata was automatically generated from the Content Standard for Digital Geospatial Metadata standard (version FGDC-STD-012-2002) using the 2014-07-21 version of the FGDC RSE to ISO 19115-2 transform - for Seismic Metadata.
        maintenanceNote:  Translated from FGDC on 2014-08-19T13:59:44.301-06:00
        maintenanceNote:  Previous Metadata Review Date: 2012-07-19
        maintenanceNote:  This record has been automatically modified to include references to NCEI where applicable on 2015-08-11.
        contact:  (CI_ResponsibleParty)
            individualName:  Anna Milan
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            positionName:  Metadata Specialist
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  (303) 497-5099
                    facsimile:  (303) 497-6513
                address:  (CI_Address)
                    deliveryPoint:  Mail Code E/NE52
                    deliveryPoint:  325 Broadway
                    city:  Boulder
                    administrativeArea:  CO
                    postalCode:  80305-3328
                    country:  USA
                    electronicMailAddress:  Anna.Milan@noaa.gov
                hoursOfService:  9:00 - 5:00 Mountain
            role:  (CI_RoleCode) pointOfContact
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            citation:  (CI_Citation)
                title:  Knudsen CHIRP 3260
                date: (unknown)
                identifier:  (MD_Identifier)
                    code:  CHIRP 3260
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  Knudsen Engineering Limited
                    contactInfo:  (CI_Contact)
                        phone:  (CI_Telephone)
                            voice:  315-393-8861 (USA)
                            voice:  613-267-1165 (Canada)
                            facsimile:  613-267-7085 (Canada)
                        address:  (CI_Address)
                            deliveryPoint:  10 Industrial Road
                            city:  Perth, Ontario
                            postalCode:  K7H3P2
                            country:  Canada
                            electronicMailAddress:  info@knudsenengineering.com
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://knudseneng.com/products/chirp_3260
                            name:  Chirp 3260 Echosounder
                            description:  Chirp 3260 Echosounder information
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) resourceProvider
            identifier:  (MD_Identifier)
                code:  Knudsen CHIRP 3260
            type:  Echosounder
            description:  The Chirp 3260 is designed for full ocean depth work where high transmit output power is a requirement. The Chirp 3260's 5U rackmount case can be fitted with up to six 2kW transmitter modules to output up to 12kW of total system power. The most common arrangement used by the research community worldwide is one 3.5 kHz channel configured for 10KW paired together with a 2KW, 12 kHz channel.
        operation:  (MI_Operation)
            identifier:  (MD_Identifier)
                code:  RB1202
            status:  (MD_ProgressCode) completed
            parentOperation: (inapplicable)
        platform:  (MI_Platform)
            citation:  (CI_Citation)
                title:  NOAA Ship Ronald H Brown
                alternateTitle:  Ron Brown
                alternateTitle:  Ronald H Brown
                alternateTitle:  RHB
                date:  (CI_Date)
                    date:  2012-01-18
                    dateType:  (CI_DateTypeCode) creation
            identifier:  (MD_Identifier)
                code:  Ronald Brown (RB)
            description:  At 274 ft and displacing more than 3,200 tons, the NOAA Ship Ronald H. Brown is the flagship of the NOAA fleet. Named in memory of a former the U.S. Department of Commerce Secretary who perished in a plane crash in 1996, the ship is a state-of-the-art oceanographic and atmospheric research platform. The Ron Brown, as it is commonly and fondly known, is equipped with an array of advanced instruments and sensors. From its home port in Charleston, South Carolina, the ship has sailed the Atlantic, Pacific, and Indian Oceans, conducting scientific studies to increase our understanding of the world's marine environment. The Ron Brown carries a complement of 5 NOAA Corps officers, 20 crew members, and can accommodate up to 33 scientists. The crew's primary responsibilities involve day-to-day operations. This includes routine data collection and management tasks related to the ship's mission as a scientific research platform.
            sponsor:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/OMAO/MOC-A > Marine Operations Center - Atlantic, NOAA Marine Operations, NOAA Office of Marine and Aviation Operations, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        facsimile:  757-441-6495
                    address:  (CI_Address)
                        deliveryPoint:  NOAA/OMAO/MOC-A
                        deliveryPoint:  439 West York Street
                        city:  Norfolk
                        administrativeArea:  VA
                        postalCode:  23510-1145
                        country:  USA
                        electronicMailAddress:  David.A.Score@noaa.gov
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://www.moc.noaa.gov/MOC-A/index.html
                        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.
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) pointOfContact
            instrument:  (MI_Instrument)
                citation:  (CI_Citation)
                    title:  C-Band Doppler Radar
                    date: (unknown)
                    identifier:  (MD_Identifier)
                        code:  C-Band
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        individualName:  Dr. Larry Davis
                        organisationName:  Radtec Engineering, Inc.
                        contactInfo:  (CI_Contact)
                            phone:  (CI_Telephone)
                                voice:  303-438-8745
                                facsimile:  303-438-8820
                            address:  (CI_Address)
                                deliveryPoint:  2150 West 6th Avenue
                                city:  Broomfield
                                administrativeArea:  CO
                                postalCode:  80020
                                country:  USA
                                electronicMailAddress:  larry@radar-sales.com
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://radar-sales.com/systems-rdr.html
                        role:  (CI_RoleCode) resourceProvider
                identifier:  (MD_Identifier)
                    code:  RDR Doppler Weather Radar Systems C-Band
                type:  C-Band Doppler Radar
                description:  Coaxial magnetron, solid state IGBT modulator, and integrated low noise receiver front end, provision for future capabilities such dual polarity operation.
            instrument:  (MI_Instrument)
                citation:  (CI_Citation)
                    title:  SeaBeam 2112 Multibeam Echosounder
                    alternateTitle:  Sea Beam 2112
                    date: (unknown)
                    identifier:  (MD_Identifier)
                        code:  SB2112
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  L-3 ELAC Nautik
                        contactInfo:  (CI_Contact)
                            phone:  (CI_Telephone)
                                voice:  +49 431 883 0
                                facsimile:  +49 431 883 496
                            address:  (CI_Address)
                                deliveryPoint:  Neufeldtstrasse 10
                                city:  Kiel
                                postalCode:  24118
                                country:  Germany
                                electronicMailAddress:  elac.marketing@L-3com.com
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.elac-nautik.de/contact-contact/highlite-contact/322fa9862948e6f0530dcae7c7e8df7f/
                        role:  (CI_RoleCode) resourceProvider
                identifier:  (MD_Identifier)
                    code:  SeaBeam 2112
                type:  Multibeam Echosounder
                description:  Seabeam 2112 (12 Khz) swath bathymetric sonar system. The system, originally used for high accuracy (Seabeam Classic) charting of the U.S. Exclusive Economic Zone (EEZ), is capable of hydrographic charting and seafloor acoustic backscatter imaging in water depths of 50 to 11,000 meters with up to 151 beams. Swath coverage (75 percent of water depth) varies as a function of depth, from 150 degrees at 1,000 meters, to 120 degrees at 5,000 meters, and 90 degrees at 11,000 meters, with a resolution of two degrees. The system regularly operates in 4000+ meters of water but is effective in shallower applications (less than 500m).