High-Resolution Seismic Profiles from the US Atlantic Continental Margin Atlantic | referenceSystemInfo|
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(MI_Metadata) fileIdentifier: gov.noaa.ngdc.mgg.seismic:KNOX17RR_SubbottomProfiler hierarchyLevel: (MD_ScopeCode) series contact: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: ncei.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/contact name: NCEI Contact Information description: Information for contacts at NCEI. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact dateStamp: 2020-05-07 metadataStandardName: ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data metadataStandardVersion: ISO 19115-2:2009(E) return to top 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: https://epsg.org/crs_4326/WGS-84.html 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: https://epsg.org/home.html 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 return to top 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: https://epsg.org/crs_5831/Instantaneous-Water-Level-depth.html 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: https://epsg.org/home.html 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 return to top identificationInfo: (MD_DataIdentification) citation: (CI_Citation) title: High-Resolution Seismic Profiles from the US Atlantic Continental Margin Atlantic date: (CI_Date) date: 2012-12-14 dateType: (CI_DateTypeCode) publication identifier: (MD_Identifier) authority: (CI_Citation) title: NOAA National Centers for Environmental Information date: (inapplicable) code: NCEI Metadata ID: gov.noaa.ngdc.mgg.seismic:KNOX17RR_SubbottomProfiler citedResponsibleParty: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information role: (CI_RoleCode) publisher citedResponsibleParty: (CI_ResponsibleParty) organisationName: UNH Center for Coastal and Ocean Mapping/Joint Hydrographic Center (CCOM/JHC) role: (CI_RoleCode) author abstract: Knudsen 320BR CHIRP subbottom data collected simultaneously with multibeam bathymetry and acoustic backscatter. purpose: The National Oceanic and Atmospheric Administration (NOAA), on behalf of the United States Government, has a requirement to carry out surveys of the U.S. Atlantic continental margin in order to obtain multibeam bathymetry. In addition, high-resolution CHIRP seismic profiles were continuously collected and processed during the cruises. These data are required to support any potential claim for extended jurisdiction 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 1500 to 5000 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 all the data collected during the cruise. credit: Center for Coastal & Ocean Mapping, University of New Hampshire status: (MD_ProgressCode) completed status: (MD_ProgressCode) historicalArchive pointOfContact: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: ncei.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/contact name: NCEI Contact Information description: Information for contacts at NCEI. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact pointOfContact: (CI_ResponsibleParty) individualName: Jennifer Jencks organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) phone: (CI_Telephone) voice: 303 497-6419 address: (CI_Address) electronicMailAddress: Jennifer.Jencks@noaa.gov hoursOfService: 8:00 - 5:00 Mountain role: (CI_RoleCode) pointOfContact resourceMaintenance: (MD_MaintenanceInformation) maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded descriptiveKeywords: (MD_Keywords) keyword: high-resolution CHIRP keyword: seismic type: (MD_KeywordTypeCode) theme thesaurusName: (CI_Citation) title: Uncontrolled date: (unknown) descriptiveKeywords: (MD_Keywords) keyword: Earth Science > Oceans > Marine Geophysics > Plate Tectonics keyword: Earth Science > Oceans > Ocean Acoustics > Acoustic Reflectivity keyword: Earth Science > Oceans > Ocean Acoustics > Acoustic Velocity type: (MD_KeywordTypeCode) theme thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Science Keywords date: (CI_Date) date: 2020-01-09 dateType: (CI_DateTypeCode) publication edition: 9.1 citedResponsibleParty: (CI_ResponsibleParty) organisationName: NASA Goddard Space Flight Center, Earth Science Data and Information System contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/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) custodian descriptiveKeywords: (MD_Keywords) keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce keyword: UNH/CCOM-JHC > Center for Coastal and Ocean Mapping - Joint Hydrographic Center, University of New Hampshire type: (MD_KeywordTypeCode) dataCentre thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Data Center Keywords date: (CI_Date) date: 2020-01-09 dateType: (CI_DateTypeCode) publication edition: 9.1 citedResponsibleParty: (CI_ResponsibleParty) organisationName: NASA Goddard Space Flight Center, Earth Science Data and Information System contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/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) custodian resourceConstraints: (MD_LegalConstraints) accessConstraints: (MD_RestrictionCode) otherRestrictions 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. resourceConstraints: (MD_LegalConstraints) useConstraints: (MD_RestrictionCode) otherRestrictions otherConstraints: Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. aggregationInfo: (MD_AggregateInformation) aggregateDataSetName: (CI_Citation) title: Cruise Report date: (inapplicable) citedResponsibleParty: (CI_ResponsibleParty) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://ccom.unh.edu/sites/default/files/publications/Cruise%20Report%20KNOX17RR-Atlantic.pdf description: URL to the Cruise Report function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) publisher associationType: (DS_AssociationTypeCode) crossReference aggregationInfo: (MD_AggregateInformation) aggregateDataSetName: (CI_Citation) title: KNOX17RR date: (CI_Date) date: 2012-12-14 dateType: (CI_DateTypeCode) creation identifier: (MD_Identifier) code: KNOX17RR associationType: (DS_AssociationTypeCode) largerWorkCitation initiativeType: (DS_InitiativeTypeCode) collection spatialRepresentationType: (MD_SpatialRepresentationTypeCode) language: eng; USA extent: (EX_Extent) geographicElement: (EX_GeographicBoundingBox) westBoundLongitude: -80.12014 eastBoundLongitude: -67.79207 southBoundLatitude: 26.08867 northBoundLatitude: 41.52391 temporalElement: (EX_TemporalExtent) extent: TimePeriod: beginPosition: 2008-05-02 endPosition: 2008-05-31 return to top 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: NOAA National Centers for Environmental Information 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: NOAA National Centers for Environmental Information 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: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://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 (https://noaa.maps.arcgis.com/home/item.html?id=589adaec19ba48a9942ca9b13000c46d), Bathymetry (https://noaa.maps.arcgis.com/home/item.html?id=09dba3b48e8b49f4bcbf21f6e51ef6ed), Gravity (https://noaa.maps.arcgis.com/home/item.html?id=00cb8aa7607b4f11b78ef5a0e77921f5), Magnetics (https://noaa.maps.arcgis.com/home/item.html?id=09d6cfa8909545ddbfe93657ad761222), and Single-Channel Seismics (https://noaa.maps.arcgis.com/home/item.html?id=ff835a5df139428f992a6066151ffdda). pointOfContact: (CI_ResponsibleParty) individualName: NCEI GIS Team organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: ncei.gis@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: 2020-01-09 dateType: (CI_DateTypeCode) publication edition: 9.1 citedResponsibleParty: (CI_ResponsibleParty) organisationName: NASA Goddard Space Flight Center, Earth Science Data and Information System contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/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) custodian 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: 10.7 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://gis.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://gis.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 return to top distributionInfo: (MD_Distribution) distributor: (MD_Distributor) distributorContact: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: ncei.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/contact name: NCEI Contact Information description: Information for contacts at NCEI. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) distributor distributionOrderProcess: (MD_StandardOrderProcess) fees: In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. orderingInstructions: Contact NCEI for other distribution options and instructions. distributorFormat: (MD_Format) name: Raw Knudsen SEG-Y Datagram version: (unknown) distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.seismic:KNOX17RR_SubbottomProfiler/html protocol: HTTPS name: Metadata Landing Page function: (CI_OnLineFunctionCode) information distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://maps.ngdc.noaa.gov/viewers/geophysics/ name: Trackline Geophysical 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 distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://www.ngdc.noaa.gov/trackline/request/?surveyIds=KNOX17RR name: Request Trackline Data description: Download seismic data from this cruise. function: (CI_OnLineFunctionCode) order return to top 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 return to top 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 3 system. Positioning is accurate to better than 5 meters (at 95% confidence) during all surveying. All positioning is referenced to the WGS84 ellipsoid Datum. result: (missing) report: (DQ_AbsoluteExternalPositionalAccuracy) nameOfMeasure: Vertical Positional Accuracy Report evaluationMethodDescription: No attempt was made to determie the accuracy of the system although recorded depths are typically within +/-10 m of the center-beam multibeam sounding. result: (missing) return to top metadataMaintenance: (MD_MaintenanceInformation) maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded maintenanceNote: Modified for compliance to NCEI Template v1.2. return to top 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) 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: KNOX17RR status: (MD_ProgressCode) completed parentOperation: (inapplicable) platform: (MI_Platform) citation: (CI_Citation) title: R/V Roger Revelle date: (CI_Date) date: 1996 dateType: (CI_DateTypeCode) creation identifier: (MD_Identifier) code: Roger Revelle (RR) description: R/V Roger Revelle (AGOR 24) is a 274-foot (83 meter) research ship operated by the Scripps Institution of Oceanography, a graduate division of the University of California, San Diego. It is the sister ship of the R/V Atlantis, Woods Hole Oceanographic Institution's deep submergence support ship that carries the submersible Alvin. Revelle is the second of four new-generation AGOR oceanographic ships built by the U.S. Navy for operation by American oceanographic institutions. R/V Roger Revelle has a cruising speed of 12 knots and carries 22 crewmembers and 37 scientists. sponsor: (CI_ResponsibleParty) organisationName: Scripps Institution of Oceanography role: (CI_RoleCode) owner 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) 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. |