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referenceSystemInfo
referenceSystemInfo
identificationInfo
identificationInfo
distributionInfo
dataQualityInfo
dataQualityInfo
metadataMaintenance
acquisitionInformation

MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP high-resolution Seismic Profile data.
 (MI_Metadata)
    fileIdentifier:  gov.noaa.ngdc.mgg.seismic:MGL1111_SubbottomProfiler
    language:  eng; USA
    characterSet:  (MD_CharacterSetCode) utf8
    hierarchyLevel:  (MD_ScopeCode) series
    contact:  (CI_ResponsibleParty)
        individualName:  Jennifer Jencks
        organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
        contactInfo:  (CI_Contact)
            phone:  (CI_Telephone)
                voice:  303 497-6419
                facsimile:  303 497-6513
            address:  (CI_Address)
                deliveryPoint:  325 Broadway
                city:  Boulder
                administrativeArea:  CO
                postalCode:  80305-3328
                country:  USA
                electronicMailAddress:  Jennifer.Jencks@noaa.gov
            hoursOfService:  8:00 - 5:00 Mountain
            contactInstructions:  Contact Data Center
        role:  (CI_RoleCode) pointOfContact
    dateStamp:  2017-12-21
    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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    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  World Geodetic System 1984
                alternateTitle:  WGS 84
                date:  (CI_Date)
                    date:  2007-08-27
                    dateType:  (CI_DateTypeCode) revision
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (withheld)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326
                            name:  WGS 84
                            description:  GML of World Geodetic System 1984 coordinate reference system.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) resourceProvider
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  European Petroleum Survey Group
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.epsg-registry.org/
                            name:  European Petroleum Survey Group Geodetic Parameter Registry
                            description:  Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
                            function:  (CI_OnLineFunctionCode) search
                    role:  (CI_RoleCode) publisher
            code:  urn:ogc:def:crs:EPSG::4326
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    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  Instantaneous Water Level depth
                date:  (CI_Date)
                    date:  2012-08-10
                    dateType:  (CI_DateTypeCode) revision
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (withheld)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::5831
                            name:
                            description:  GML for Instantaneous Water Level depth (in meters) available from the epsg-registry.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) resourceProvider
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  European Petroleum Survey Group
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.epsg-registry.org/
                            name:  European Petroleum Survey Group Geodetic Parameter Registry
                            description:  Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
                            function:  (CI_OnLineFunctionCode) search
                    role:  (CI_RoleCode) publisher
            code:  urn:ogc:def:crs:EPSG::5831
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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP high-resolution Seismic Profile data.
            date:  (CI_Date)
                date:  2011-08-08
                dateType:  (CI_DateTypeCode) creation
            identifier:  (MD_Identifier)
                code:  gov.usgs.mgl1111chirp_field
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) publisher
        abstract:  The Knudsen 2620 acquired sub-bottom profiles continuously throughout the cruise. The Knudsen was operated in 3.5 kHz Chirp mode, emitting a 1.5 kHz to 5 kHz (3 kHz bandwidth centered on 3.5 kHz) pulse from transducers mounted in the pod beneath the hull. A record window of 100 or 200 meters and assumed sound velocity of 1500 m/s remained constant through the cruise, except for areas where topographic variation dictated a >200meter record window. The resulting data records were 131 or 261 msec long, with a sample interval 0.038 msec. The ping rate varied over the course of the cruise, generally between 4 and 6 seconds.
        purpose:  The purpose of this field program was to determine sediment thickness, sedimentary architecture and velocity structure, and basement structure in support of requirements for continental shelf maritime zone definition in the Bering Sea. The program was focused on the velocity structure of the sedimentary fill in the central Aleutian basin, and the structures and processes that control variability in that velocity profile, including the influence of basement structure and the distribution of natural gas and hydrate charged sediments. The survey primarily explored the region of the central ??donut hole?? of international waters in the deep Aleutian basin, and included some coverage southward into the US EEZ approaching Bowers ridge. Project website: http://continentalshelf.gov/
        pointOfContact:  (CI_ResponsibleParty)
            individualName:  Dr. Ginger Barth
            organisationName:  United States Geological Survey
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  gbarth@usgs.gov
            role:  (CI_RoleCode) author
        pointOfContact:  (CI_ResponsibleParty)
            individualName:  Dr. Ginger Barth
            organisationName:  United States Geological Survey
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  gbarth@usgs.gov
            role:  (CI_RoleCode) principalInvestigator
        resourceFormat:  (MD_Format)
            name:  KEB, SEGY
            version: (inapplicable)
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Seismic:Active:Subbottom
            thesaurusName:  (CI_Citation)
                title:  DataType Keywords
                date:  (CI_Date)
                    date:  2009-12-01
                    dateType:  (CI_DateTypeCode) publication
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Seismic:Reflection
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  ProcessedMethod Keywords
                date:  (CI_Date)
                    date:  2009-12-01
                    dateType:  (CI_DateTypeCode) publication
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Other
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  ProcessedDataClass Keywords
                date:  (CI_Date)
                    date:  2009-12-01
                    dateType:  (CI_DateTypeCode) publication
        descriptiveKeywords:  (MD_Keywords)
            keyword:  DigitalSeg:DigitallyAcquired
            thesaurusName:  (CI_Citation)
                title:  SeismicDataProvenance Keywords
                date:  (CI_Date)
                    date:  2009-12-01
                    dateType:  (CI_DateTypeCode) publication
        descriptiveKeywords:  (MD_Keywords)
            keyword:  [1495] Bowers Ridge
            keyword:  [1494] Shirshov Ridge
            keyword:  [1493] Aleutian Basin
            type:  (MD_KeywordTypeCode) place
        descriptiveKeywords:  (MD_Keywords)
            keyword:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            keyword:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            type:  (MD_KeywordTypeCode) dataCenter
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Data Center Keywords
                date:  (CI_Date)
                    date:  2017-04-24
                    dateType:  (CI_DateTypeCode) publication
                edition:  8.5
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (withheld)
                    contactInfo:  (CI_Contact)
                        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: (inapplicable)
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  open
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                title:  MGL1111
                date:  (CI_Date)
                    date:  2011-08-08
                    dateType:  (CI_DateTypeCode) creation
            aggregateDataSetIdentifier:  (MD_Identifier)
                code:  MGL1111
            associationType:  (DS_AssociationTypeCode) largerWorkCitation
            initiativeType:  (DS_InitiativeTypeCode) collection
        language:  eng
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  174.12081
                eastBoundLongitude:  -166.47889
                southBoundLatitude:  53.89308
                northBoundLatitude:  58.82082
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  2011-08-08
                    endPosition:  2011-09-02
        supplementalInformation:
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    identificationInfo:  (SV_ServiceIdentification)
        citation:  (CI_Citation)
            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:  2017-04-24
                    dateType:  (CI_DateTypeCode) publication
                edition:  8.5
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (withheld)
                    contactInfo:  (CI_Contact)
                        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: (inapplicable)
        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
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: http://walrus.wr.usgs.gov/infobank/l/l1111bs/html/l-11-11-bs.meta.html
        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=MGL1111
                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) dataset
        lineage:  (LI_Lineage)
            statement:  Data Quality: The Knudsen operated continuously through the entire cruise except for OBS deployment and recovery stations when pinger systems were secured. Several data gaps occurred (on MCS lines 2,7 and 9) when the system stopped recording .segy format ?? this missing data is recorded in the kea- keb format files.
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) unknown
        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)
            identifier:  (MD_Identifier)
                code:  Knudsen 2620
            type:  Sonar_CHIRP
            description:  receiverType: Sonar_CHIRP. sourceType: Sonar_CHIRP. acquisitionSystemName: Knudsen 2620. acquisitionSystemType: digital. seismicNavSystem: C-NAV 3050. surveyDatum: WGS84. shotInterval_inSecondsOrMeters: 5. sampleInterval_inMicroseconds: 167. sweepFrequency: 2 kHz to 5 kHz. recordLength_inSeconds: 0.27.
        operation:
        operation:
        platform:  (MI_Platform)
            citation:  (CI_Citation)
                title:  R/V Marcus G. Langseth
                date: (inapplicable)
            identifier:  (MD_Identifier)
                code:  Marcus G. Langseth
            description:  The Marcus G. Langseth serves as the national seismic research facility for the United States academic research community. The R/V Marcus G. Langseth's unique seismic capability allows it to provide both 2D and 3D maps of the earth's structure miles below the seafloor. Utilizing the vessel's other capabilities, expeditions have collected sediment cores for understanding climate variations throughout the Earth'??s history, sampled seawater for determining physical and chemical properties of the oceans, and deployed remotely operated vehicles (ROVs) for studying submarine volcanoes. Scientists and researchers from all over the world are encouraged to participate in research programs aboard the Langseth.
            sponsor:  (CI_ResponsibleParty)
                organisationName:  Lamont-Doherty Earth Observatory - Office of Marine Operations
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  (845) 359-2900
                    address:  (CI_Address)
                        deliveryPoint:  P.O. Box 1000
                        deliveryPoint:  61 Route 9W
                        city:  Palisades
                        administrativeArea:  NY
                        postalCode:  10964-1000
                        country:  USA
                        electronicMailAddress:  director@ldeo.columbia.edu
                role:  (CI_RoleCode) resourceProvider
            instrument:  (MI_Instrument)
                citation:  (CI_Citation)
                    title:  Kongsberg EM122 Multibeam Echosounder
                    date: (unknown)
                    identifier:  (MD_Identifier)
                        code:  EM122
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Kongsberg Maritime
                        contactInfo:  (CI_Contact)
                            phone:  (CI_Telephone)
                                voice:  +47 214 98 364
                                facsimile:  +47 322 85 014
                            address:  (CI_Address)
                                deliveryPoint:  P.O. Box 483
                                deliveryPoint:  NO-3601
                                city:  Kongsberg
                                country:  Norway
                                electronicMailAddress:  km.support@kongsberg.com
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.km.kongsberg.com/ks/web/nokbg0240.nsf/AllWeb/01FB0F22974EA50FC125715E002B2143?OpenDocument
                                name:  Kongsberg EM122 information
                                description:  Information on the Kongsberg EM122 multibeam sonar system
                                function:  (CI_OnLineFunctionCode) information
                        role:  (CI_RoleCode) resourceProvider
                identifier:  (MD_Identifier)
                    code:  Kongsberg EM122
                type:  Multibeam Echosounder
                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.