EMAG2: Earth Magnetic Anomaly Grid (2-arc-minute resolution) | spatialRepresentationInfo|
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(MI_Metadata) fileIdentifier: gov.noaa.ngdc.mgg.geophysical_models:EMAG2 hierarchyLevel: (MD_ScopeCode) dataset 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: 2020-05-14 metadataStandardName: ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data metadataStandardVersion: ISO 19115-2:2009(E) return to top spatialRepresentationInfo: (MD_GridSpatialRepresentation) numberOfDimensions: 2 axisDimensionProperties: (MD_Dimension) dimensionName: (MD_DimensionNameTypeCode) row dimensionSize: 10801 resolution: Distance: .033 axisDimensionProperties: (MD_Dimension) dimensionName: (MD_DimensionNameTypeCode) column dimensionSize: 5401 resolution: Distance: .033 cellGeometry: (MD_CellGeometryCode) area transformationParameterAvailability: true 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 identificationInfo: (MD_DataIdentification) citation: (CI_Citation) title: EMAG2: Earth Magnetic Anomaly Grid (2-arc-minute resolution) date: (CI_Date) date: 2009-08-07 dateType: (CI_DateTypeCode) publication edition: Version 2 editionDate: 2009-08-07 identifier: (MD_Identifier) authority: (CI_Citation) title: International DOI Foundation (IDF) date: (inapplicable) code: Anchor: DOI doi:10.7289/V5MW2F2P identifier: (MD_Identifier) authority: (CI_Citation) title: NOAA National Centers for Environmental Information date: (inapplicable) code: NCEI Metadata ID: gov.noaa.ngdc.mgg.geophysical_models:EMAG2 citedResponsibleParty: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information role: (CI_RoleCode) publisher citedResponsibleParty: (CI_ResponsibleParty) positionName: Maus, S. role: (CI_RoleCode) author presentationForm: (CI_PresentationFormCode) mapDigital abstract: EMAG2 is a global Earth Magnetic Anomaly Grid compiled from satellite, ship, and airborne magnetic measurements. It is a significant update of our previous candidate grid for the World Digital Magnetic Anomaly Map. The resolution has been improved from 3 arc-minutes to 2 arc-minutes, and the altitude has been reduced from 5 km to 4 km above the geoid. Additional grid and track line data have been included, both over land and the oceans. Wherever available, the original shipborne and airborne data were used instead of precompiled oceanic magnetic grids. Interpolation between sparse track lines in the oceans was improved by directional gridding and extrapolation, based on oceanic crustal age model. The longest wavelengths (>330 km) were replaced with the latests CHAMP satellite magnetic field model MF6. purpose: Magnetic anomaly maps provide insight into the subsurface structure and composition of the Earth's crust. Over continental areas, magnetic anomalies illuminate geologic, tectonic, and geothermal evolution of crust and lithosphere. In the world's oceans, anomalies trending parallel to the isochrons (lines of equal age) reveal the temporal evolution of oceanic crust. Magnetic maps are widely used in the geological sciences and in resource exploration. 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) organisationName: NOAA National Centers for Environmental Information positionName: NCEI Geomagnetic Modeling Team contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: geomag.models@noaa.gov role: (CI_RoleCode) pointOfContact resourceMaintenance: (MD_MaintenanceInformation) maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded graphicOverview: (MD_BrowseGraphic) fileName: http://geomag.colorado.edu/images/Looking_NW_at_Spain_s.jpg fileDescription: EMAG2 looking north-west at Portugal/Spain from the Atlantic. Kursk (Russia) is seen as a strong anomaly in the background. The stripes on the left of the image are magnetic lineations due to sea-floor spreading. fileType: jpg descriptiveKeywords: (MD_Keywords) keyword: Earth Science > Solid Earth > Geomagnetism > Magnetic Field keyword: Earth Science > Solid Earth > Geomagnetism > Magnetic Intensity keyword: Earth Science > Solid Earth > Geomagnetism > Magnetic Anomalies 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: Geographic Region > Global type: (MD_KeywordTypeCode) place thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Location 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: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce 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. resourceConstraints: (MD_Constraints) useLimitation: Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States. resourceConstraints: (MD_Constraints) useLimitation: 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 navigation, please refer to the NOS nautical chart series. resourceConstraints: (MD_LegalConstraints) useLimitation: (MD_RestrictionCode) otherRestrictions otherConstraints: Cite as: Maus, S.. 2009: EMAG2: Earth Magnetic Anomaly Grid (2-arc-minute resolution). Version 2. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5MW2F2P. Accessed [date]. spatialRepresentationType: (MD_SpatialRepresentationTypeCode) grid language: eng; USA topicCategory: (MD_TopicCategoryCode) geoscientificInformation extent: (EX_Extent) geographicElement: (EX_GeographicBoundingBox) westBoundLongitude: -180 eastBoundLongitude: 180 southBoundLatitude: -90 northBoundLatitude: 90 temporalElement: (EX_TemporalExtent) extent: TimePeriod: beginPosition: 1946-01-01 endPosition: 2008-12-01 return to top contentInfo: (MI_CoverageDescription) attributeDescription: RecordType: Grid Cell contentType: (MD_CoverageContentTypeCode) modelResult dimension: (MD_Band) descriptor: Magnetic Anomaly maxValue: Real: 8165 minValue: Real: -3357 units: BaseUnit: identifier: nanoTesla unitsSystem: rangeElementDescription: (MI_RangeElementDescription) name: Empty Grid Cell definition: Representation of grid cell with no measurement value. rangeElement: Record: -99999 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: PDF version: Version 2 specification: Full Resolution Map of EMAG2 as a poster distributorFormat: (MD_Format) name: JPG version: Version 2 specification: Full Resolution Map of EMAG2 as a poster distributorFormat: (MD_Format) name: JPG version: Version 2 specification: Full Resolution Map of EMAG2 as an image distributorFormat: (MD_Format) name: Article version: Version 2 specification: Preprint of manuscript "EMAG2: A 2-arc-minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne and marine magnetic measurements", submitted for publication to Geochem. Geophys. Geosyst. distributorFormat: (MD_Format) name: Google Earth version: Version 2 specification: Plugin for Google Earth. Requires installation of Google Earth. See also https://productforums.google.com/forum/?fromgroups#!msg/gec-dynamic-data-layers/yYsaTFnIzYQ/RVwprs5WhPQJ[1-25] distributorFormat: (MD_Format) name: XYZ/Zip version: Version 2 specification: ASCII grid of the magnetic total intensity at 4km above WGS84 ellipsoid. distributorFormat: (MD_Format) name: GIS TIFF version: Version 2 specification: A georeferenced TIFF (GeoTIFF) with a resolution of 2 arc-minutes, which can be opened by ESRI ArcGIS or any other GIS application. The values (nT) are stored as 32-bit floating point. distributorFormat: (MD_Format) name: GMT Grid version: Version 2 specification: A GMT (Generic Mapping Tools) compatible net CDF grid with resolution of 2-arc-minutes. The values (nT) are stored as 32-bit floating point. distributorFormat: (MD_Format) name: GeoTIFF version: Version 2 specification: Color-relief: A 24-bit RGB georeferenced TIFF (GeoTIFF) color-relief visualization of the EMAG2 grid, which can be opened by ArcGIS or any other GIS application. The color scale legend is at http://geomag.colorado.edu/images/EMAG2_scale.png distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.geophysical_models:EMAG2/html protocol: HTTPS name: Metadata Landing Page function: (CI_OnLineFunctionCode) information distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/emag2-earth-magnetic-anomaly-grid-2-arc-minute-resolution.html protocol: HTTPS name: EMAG2 Home Page function: (CI_OnLineFunctionCode) information distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_poster_V2.pdf name: EMAG2 Full Resolution Map poster description: PDF of Full Resolution Map of EMAG2 as a poster function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_poster_V2.jpg name: EMAG2 Full Resolution Map poster description: JPG of Full Resolution Map of EMAG2 as a poster. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_image_V2.jpg name: EMAG2 Full Resolution Map image description: JPG of Full Resolution Map of EMAG2 as an image. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/emag2.pdf name: EMAG2: A 2-arc-minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne and marine magnetic measurements description: Preprint of manuscript "EMAG2: A 2-arc-minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne and marine magnetic measurements", submitted for publication to Geochem. Geophys. Geosyst. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2.kmz name: Google Earth description: Plugin for Google Earth. Requires installation of Google Earth. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_V2.xyz.gz name: XYZ/Zip description: EMAG2 ASCII grid of the magnetic total intensity at 4km above WGS84 ellipsoid. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_V2.tif name: GIS TIFF description: A georeferenced TIFF (GeoTIFF) with a resolution of 2-arc-minutes, which can be opened by ESRI ArcGIS or any other GIS application. The values (nT) are stored as 32-bit floating point. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_V2.grd name: GMT Grid description: A GMT (Generic Mapping Tools) compatible netCDF grid with resolution of 2-arc-minutes. The values (nT) are stored as 32-bit floating point. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_image_V2.tif name: Color-relief description: A 24-bit RGB georeferenced TIFF (GeoTIFF) color-relief visualization of the EMAG2 grid, which can be opened by ArcGIS or any other GIS application. function: (CI_OnLineFunctionCode) download distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://geomag.colorado.edu/images/EMAG2/EMAG2_no_directional_gridding_2009-01-06.xyz.gz name: XYZ/zip description: EMAG2 (Version 2.0) ASCII grid of the magnetic total intensity at 4km above WGS84 ellipsoid. This version was produced without directional gridding. Therefore, it has much sparser coverage but reflects more closely the actual measurements. function: (CI_OnLineFunctionCode) download 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) model lineage: (LI_Lineage) processStep: (LE_ProcessStep) description: Merged grids at 4 km altitude above geoid using Least Squares Collocation. processingInformation: (LE_Processing) identifier: (MD_Identifier) code: Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "EMAG2: A 2-arc minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements" found at http://geomag.colorado.edu/images/EMAG2/emag2.pdf softwareReference: (CI_Citation) title: Generic Mapping Tools (GMT) date: (CI_Date) date: 2008-05-15 dateType: (CI_DateTypeCode) revision documentation: (CI_Citation) title: EMAG2: A 2-arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements date: (CI_Date) date: 2009-08-07 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://geomag.org/info/Smaus/Doc/emag2.pdf role: (CI_RoleCode) originator ISSN: 1525-2027 algorithm: (LE_Algorithm) citation: (CI_Citation) title: National Geophysical Data Center candidate for the World Digital Magnetic Anomaly Map date: (CI_Date) date: 2007-06-29 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://geomag.org/info/Smaus/Doc/wdmam.pdf role: description: Least Squares Collocation (LSC) processStep: (LE_ProcessStep) description: From all original ship and airborne measurements: subtracted main and external fields given by the Comprehensive Model (Sabaka et al., 2004) processingInformation: (LE_Processing) identifier: (MD_Identifier) code: Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "EMAG2: A 2-arc minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements" found at http://geomag.colorado.edu/images/EMAG2/emag2.pdf softwareReference: (CI_Citation) title: Generic Mapping Tools (GMT) date: (CI_Date) date: 2008-05-15 dateType: (CI_DateTypeCode) revision algorithm: (LE_Algorithm) citation: (CI_Citation) title: EMAG2: A 2-arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements date: (CI_Date) date: 2009-08-07 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://geomag.org/info/Smaus/Doc/emag2.pdf role: (CI_RoleCode) originator ISSN: 1525-2027 description: Main and external field subtraction from observations processStep: (LE_ProcessStep) description: Line-leveled the trackline data, minimizing misfits from neighboring and cross-over tracks. processingInformation: (LE_Processing) identifier: (MD_Identifier) code: Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "EMAG2: A 2-arc minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements" found at http://geomag.colorado.edu/images/EMAG2/emag2.pdf softwareReference: (CI_Citation) title: Generic Mapping Tools (GMT) date: (CI_Date) date: 2008-05-15 dateType: (CI_DateTypeCode) revision algorithm: (LE_Algorithm) citation: (CI_Citation) title: National Geophysical Data Center candidate for the World Digital Magnetic Anomaly Map date: (CI_Date) date: 2007-06-29 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://geomag.org/info/Smaus/Doc/wdmam.pdf role: description: Line-leveled the trackline data, reducing cross-over errors from 92 nT to 70 nT rms and the misfit to the merged grid from 121 nT to 97 nT rms. processStep: (LE_ProcessStep) description: Merged the trackline data with the grid at 4 km altitude using Least Squares Collocation with anisotropic correlation function (directional gridding). processingInformation: (LE_Processing) identifier: (MD_Identifier) code: Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "EMAG2: A 2-arc minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements" found at http://geomag.colorado.edu/images/EMAG2/emag2.pdf softwareReference: (CI_Citation) title: Generic Mapping Tools (GMT) date: (CI_Date) date: 2008-05-15 dateType: (CI_DateTypeCode) revision algorithm: (LE_Algorithm) citation: (CI_Citation) title: National Geophysical Data Center candidate for the World Digital Magnetic Anomaly Map date: (CI_Date) date: 2007-06-29 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://geomag.org/info/Smaus/Doc/wdmam.pdf role: description: Least Squares Collocation (LSC) processStep: (LE_ProcessStep) description: Substituted spherical harmonic degrees less than or equal to 120 (33 km wavelength) with CHAMP satellite magnetic anomaly model MF6 (Maus et al., 2008). processingInformation: (LE_Processing) identifier: (MD_Identifier) code: Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "EMAG2: A 2-arc minute resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements" found at http://geomag.colorado.edu/images/EMAG2/emag2.pdf softwareReference: (CI_Citation) title: Generic Mapping Tools (GMT) date: (CI_Date) date: 2008-05-15 dateType: (CI_DateTypeCode) revision algorithm: (LE_Algorithm) citation: (CI_Citation) title: EMAG2: A 2-arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements date: (CI_Date) date: 2009-08-07 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://geomag.org/info/Smaus/Doc/emag2.pdf role: (CI_RoleCode) originator ISSN: 1525-2027 description: Input data from the CHAMP satellite magnetic anomaly model MF6. return to top metadataMaintenance: (MD_MaintenanceInformation) maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded maintenanceNote: Modified for compliance to NCEI Template v1.2. |