DNAG Gravity Data
- spatialRepresentationInfo
- referenceSystemInfo
- identificationInfo
- contentInfo
- contentInfo
- distributionInfo
- dataQualityInfo
- dataQualityInfo
- metadataMaintenance
(MI_Metadata)
fileIdentifier: gov.noaa.ngdc.mgg.geophysics:G01497
language: eng; USA
characterSet: (MD_CharacterSetCode) utf8
hierarchyLevel: (MD_ScopeCode) dataset
contact: (CI_ResponsibleParty)
individualName: Brian Meyer
organisationName: NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: 303-497-6125
address: (CI_Address)
electronicMailAddress: Brian.Meyer@noaa.gov
role: (CI_RoleCode) pointOfContact
dateStamp: 2017-09-25
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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spatialRepresentationInfo: (MD_GridSpatialRepresentation)
numberOfDimensions: 2
axisDimensionProperties: (MD_Dimension)
dimensionName: (MD_DimensionNameTypeCode) row
dimensionSize: 1430
axisDimensionProperties: (MD_Dimension)
dimensionName: (MD_DimensionNameTypeCode) column
dimensionSize: 1495
cellGeometry: (MD_CellGeometryCode) area
transformationParameterAvailability: (unknown)
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referenceSystemInfo: (template)
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identificationInfo: (MD_DataIdentification)
citation: (CI_Citation)
title: DNAG Gravity Data
date: (CI_Date)
date: 1999-01-01
dateType: (CI_DateTypeCode) publication
edition: 1999 Edition
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental 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
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) publisher
citedResponsibleParty: (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) originator
abstract: The Decade of North American Geology (DNAG) gravity grid values, spaced at 6 km, were used to produce the Gravity Anomaly Map of North America (1987; scale 1:5,000,000). Considerable caution should be exercised when using these gridded data in regions of sparse coverage (for example, deep oceanic areas). The spatial distribution of the original data from which the grid was generated is shown on sheet 5 of the published map. Note: There are no gridded data values for Mexico.
purpose: To provide easy access to global and regional gravity data and related models for scientific studies.
status: (MD_ProgressCode) completed
pointOfContact: (CI_ResponsibleParty)
individualName: Brian Meyer
organisationName: NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: 303-497-6125
address: (CI_Address)
electronicMailAddress: Brian.Meyer@noaa.gov
role: (CI_RoleCode) pointOfContact
resourceMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) irregular
descriptiveKeywords: (MD_Keywords)
keyword: EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Control Surveys
keyword: EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Gravitational Field
keyword: EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Gravity
keyword: EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Reference Systems
keyword: EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Satellite Orbits
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: Absolute Gravity
keyword: Bouguer Gravity
keyword: Free Air Anomaly
keyword: Gridded Gravity
keyword: Land Gravity
keyword: Observed Gravity
type: (MD_KeywordTypeCode) theme
thesaurusName: (CI_Citation)
title: Uncontrolled Keywords
date: (unknown)
descriptiveKeywords: (MD_Keywords)
keyword: ICSU-WDS > International Council for Science - World Data System
type: (MD_KeywordTypeCode) project
thesaurusName: (CI_Citation)
title: Global Change Master Directory (GCMD) Project 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: Continent>North America
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 Constraints: If you use this data, please cite the National Geophysical Data Center and the originator of the data.
resourceConstraints: (MD_LegalConstraints)
accessConstraints: (MD_RestrictionCode) otherRestrictions
otherConstraints: Access Constraints: None
spatialRepresentationType: (MD_SpatialRepresentationTypeCode) grid
language: eng; USA
topicCategory: (MD_TopicCategoryCode) geoscientificInformation
extent: (EX_Extent)
geographicElement: (EX_GeographicBoundingBox)
westBoundLongitude: 170.00000
eastBoundLongitude: -10.75
southBoundLatitude: 5.16667
northBoundLatitude: 81.16667
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition:
endPosition:
supplementalInformation: Note that this Spherical Transverse Mercator projection is a unique projection used for the DNAG map series. In addition to giving the Bounding Coordinates in latitude and longitude, the limits of coverage for the gridded and projected data sets are also given in units of measure of the projection. This is usually the distance from a central meridian (the x-coordinate), or base latitude (the y-coordinate), in meters or kilometers of the given projection. For this data set those boundaries are: The Western-most boundary: -4480 kilometersThe Eastern-most boundary: 4500 kilometersThe Northern-most boundary: 9280 kilometersThe Southern-most boundary: 700 kilometers
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contentInfo: (MD_CoverageDescription)
attributeDescription: (unknown)
contentType: (unknown)
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: Gravity Anomaly
attributeType: (unknown)
descriptor: Value of estimated gravity
maxValue:
Real: 341.7
minValue:
Real: -367.3
units:
UnitDefinition:
identifier: milligals
name: milligals
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: grid_origin
attributeType: (unknown)
descriptor: The location of the starting point of a grid, e.g. lowerleft, upperleft
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: grid_sequence
attributeType: (unknown)
descriptor: The sequence of the grid values, some examples are:Top to bottom then rightTop to bottom then leftLeft to right then upRight to left then down
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: grid_cell_registration
attributeType: (unknown)
descriptor: The positional information associated with registration of a grid cell, e.g.:Center of cellBottom left cornerBottom right cornerTop left cornerTop right corner
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: missing_flag
attributeType: (unknown)
descriptor: A numeric code indicating missing data values
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contentInfo: (MD_FeatureCatalogueDescription)
includedWithDataset: true
featureTypes:
LocalName:
featureCatalogueCitation: (unknown)
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distributionInfo: (MD_Distribution)
distributionFormat: (MD_Format)
name: Binary
version: (unknown)
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: Depends on the data set
orderingInstructions: Ordering Instructions: Price information is available upon request. Prepay by check, money order or bank card. There is a standard handling charge, with additional costs for special handling. Orders may be placed via fax, email, regular mail or telephone. Custom Order Process: Contact Data Center for information.
turnaround: 4 Days
transferOptions: (MD_DigitalTransferOptions)
transferSize:
Real: 4275700
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/mgg/fliers/se-0703.html
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/mgg/gravity/1999/document/html/tablegri.html
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/mgg/gravity/1999cd.html
transferOptions: (MD_DigitalTransferOptions)
offLine: (MD_Medium)
name: (MD_MediumNameCode) cdRom
mediumFormat: (MD_MediumFormatCode) iso9660
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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
report: (DQ_AbsoluteExternalPositionalAccuracy)
nameOfMeasure: Horizontal Positional Accuracy Report
evaluationMethodDescription: Horizontal accuracy varies from source contributor to source contributor. However, horizontal positions are usually taken from topographic maps of the area being surveyed. Accuracy may range up to +/- 100 feet.
result: (missing)
report: (DQ_AbsoluteExternalPositionalAccuracy)
nameOfMeasure: Vertical Positional Accuracy Report
evaluationMethodDescription: Vertical accuracy varies from source contributor to source contributor. However, vertical positions are usually taken from topographic maps of the area being surveyed, monumented benchmark locations, or they are determined by the use of the Global Positioning System (GPS). Accuracy may range from meters to centimeters or better.
result: (missing)
report: (DQ_CompletenessCommission)
evaluationMethodDescription: Not available
result: (unknown)
report: (DQ_ConceptualConsistency)
measureDescription: Not available
result: (unknown)
report: (DQ_QuantitativeAttributeAccuracy)
nameOfMeasure: Quantitative Attribute Accuracy Assessment
measureDescription: Statistical analysis.
evaluationMethodDescription: Gravity data values are the result of the measurement of small variations in the gravitational field of the Earth. The magnitudes and ranges of these variations are well known in the potential field discipline.
result: (DQ_QuantitativeResult)
valueUnit:
BaseUnit:
identifier: meters
unitsSystem: http://www.bipm.org/en/measurement-units/
value:
Record: Variable: the average acceleration on the Earth's surface is about 980 centimeters per second squared, which is equal to 980 gals, but increases by about 1/2 percent from equator to pole.
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: All data were processed by the source before being forwarded to the National Geophysical Data Center
dateTime: (unknown)
source: (LI_Source)
description: Source Contribution: Gridded gravity data Source Type: varies
sourceCitation: (CI_Citation)
title: DNAG Gravity Data
date: (CI_Date)
date: (unknown)
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: The Geological Society of America
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 357-1000
address: (CI_Address)
deliveryPoint: P.O. Box 9140
city: Boulder
administrativeArea: Colorado
postalCode: 80301-9140
country: United States
electronicMailAddress: gsaservice@geosociety.org
role: (CI_RoleCode) originator
sourceExtent: (EX_Extent)
temporalElement: (unknown) (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition:
endPosition:
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) annually
dateOfNextUpdate: 2015-11-01
maintenanceNote: This metadata was automatically generated from the Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2012-08-08 version of the FGDC RSE to ISO 19115-2 transform.
maintenanceNote: Translated from FGDC 2012-10-10T10:32:50.881-06:00
maintenanceNote: Last Metadata Review Date: 2017-09-25
maintenanceNote: This record has been automatically modified to include references to NCEI where applicable on 2015-09-01.
contact: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
positionName: Metadata Specialist
role: (CI_RoleCode) editor
contact: (CI_ResponsibleParty)
individualName: Brian Meyer
organisationName: NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: 303-497-6125
address: (CI_Address)
electronicMailAddress: Brian.Meyer@noaa.gov
role: (CI_RoleCode) pointOfContact