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NGS Metadata Library > GRAV-D_project >

Airborne Gravity Data - Gravity for the Redefinition of the American Vertical Datum (GRAV-D)

Data Set (DS)  |  National Geodetic Survey (NGS)
GUID: gov.noaa.nmfs.inport:39698  |  Updated: October 17, 2023  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Activity Log
Catalog Details

Summary

GRAV-D Blocks Browse Image

Short Citation
National Geodetic Survey, 2024: Airborne Gravity Data - Gravity for the Redefinition of the American Vertical Datum (GRAV-D), https://www.fisheries.noaa.gov/inport/item/39698.
Full Citation Examples

Abstract

Gravity for the Re-definition of the American Vertical Datum (GRAV-D) is a project initiated by NOAA's National Geodetic Survey to collect and monitor gravity data suitable for the re-definition of the vertical datum for at least the United States and territories. Airborne gravity data will be collected from 2008-2022, processed, and released periodically in geographic blocks. Each block is comprised of one or more surveys. The data will be available at http://www.ngs.noaa.gov/GRAV-D/data_products.shtml in ASCII text format. Some data collection has and will be done in conjunction with partners, such as the US Geological Survey, National Geospatial-Intelligence Agency, Bureau of Land Management, and the Naval Research Laboratory.

Distribution Information

Access Constraints:

None

Use Constraints:

Must read and fully comprehend the metadata prior to use, acknowledgment of the Originator when using the data set as a source, data should not be used beyond the limits of the source scale

Controlled Theme Keywords

Geodetic Control Theme, GEOID CHARACTERISTICS, GEOPOTENTIAL HEIGHT, geoscientificInformation, GRAVITY/GRAVITATIONAL FIELD, MARINE GRAVITY FIELD, National Geospatial Data Asset, NGDA

Child Items

No Child Items for this record.

Contact Information

Point of Contact
GRAV-D Project Manager
NGS.GRAVD@noaa.gov
240-533-9641

Metadata Contact
GRAV-D Project Manager
NGS.GRAVD@noaa.gov
240-533-9641

Extents

Geographic Area 1

-180° W, -65° E, 72° N, -18° S

Time Frame 1
2008 - 2022

Item Identification

Title: Airborne Gravity Data - Gravity for the Redefinition of the American Vertical Datum (GRAV-D)
Short Name: GRAV-D_Parent
Status: Completed
Creation Date: 2013
Revision Date: 2020
Publication Date: 2011-07
Abstract:

Gravity for the Re-definition of the American Vertical Datum (GRAV-D) is a project initiated by NOAA's National Geodetic Survey to collect and monitor gravity data suitable for the re-definition of the vertical datum for at least the United States and territories. Airborne gravity data will be collected from 2008-2022, processed, and released periodically in geographic blocks. Each block is comprised of one or more surveys. The data will be available at http://www.ngs.noaa.gov/GRAV-D/data_products.shtml in ASCII text format. Some data collection has and will be done in conjunction with partners, such as the US Geological Survey, National Geospatial-Intelligence Agency, Bureau of Land Management, and the Naval Research Laboratory.
Purpose:

These data sets were collected and processed by NOAA's National Geodetic Survey (www.ngs.noaa.gov) as part of its GRAV-D effort to modernize the U.S. vertical datum. The purpose of these data is to provide accurate gravity data for geoid modeling for the U.S. and its territories. It was designed to provide medium wavelength gravity information (around 20-400 km) to connect satellite and ground gravity measurements.
Notes:

1253

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS > MARINE GRAVITY FIELD
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD
ISO 19115 Topic Category
geoscientificInformation
NGDA Portfolio Themes
Geodetic Control Theme
NGDA Portfolio Themes
National Geospatial Data Asset
NGDA Portfolio Themes
NGDA
UNCONTROLLED
NASA/GCMD Data Center Keywords Data Center > Government Agencies-U.S. Federal Agencies > DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce
NASA/GCMD Data Center Keywords DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
NASA/GCMD Platform Keywords Platform > Aircraft > Cessna Conquest
NASA/GCMD Platform Keywords Platform > Aircraft > E90-A > Beechcraft King Air E90-A
NASA/GCMD Platform Keywords Platform > Aircraft > GULFSTREAM 1000 (695A) > Gulfstream Jet Prop Commander 1000 (695a)
NASA/GCMD Platform Keywords Platform > Aircraft > PC-12 > Pilatus PC-12
NASA/GCMD Platform Keywords Platform > Aircraft > Pilatus PC-12
NASA/GCMD Platform Keywords Platform > Aircraft > RC-12 > Beechcraft King Air RC-12
NASA/GCMD Platform Keywords Platform > Aircraft > WP-3 Orion
NASA/GCMD Platform Keywords Platform > Aircraft > WP-3D ORION > Lockheed WP-3D Orion
NGDA Portfolio Themes NGDAID47
NOS Data Explorer Topic Category Geodetic/Global Positioning
None airborne gravity
None datum
None ellipsoid height
None geodetic
None geoid
None geophysical
None GEOSS
None GGOS
None Global Earth Observation System of Systems
None Global Geodetic Observing system
None gravity
None height modernization
None National Spatial Reference System
None NAVD88
None North American Vertical Datum of 1988
None NSRS
None orthometric height
None spatial reference
None vertical

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > PUERTO RICO
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > VIRGIN ISLANDS
Global Change Master Directory (GCMD) Location Keywords
OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > AMERICAN SAMOA
Global Change Master Directory (GCMD) Location Keywords
OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > HAWAIIAN ISLANDS
Global Change Master Directory (GCMD) Location Keywords
OCEAN > PACIFIC OCEAN > EASTERN PACIFIC OCEAN > GALAPAGOS ISLANDS
UNCONTROLLED
NASA/GCMD Location Keywords Location > Continent > North America > United States of America > Virigina
NASA/GCMD Location Keywords Location > Continent > North America > United States of America > West Virigina
NASA/GCMD Location Keywords Location > Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > Gulf of Mexico
NASA/GCMD Location Keywords Location > Ocean > Pacific Ocean > Central Pacific Ocean > Guam
NASA/GCMD Location Keywords Location > Ocean > Pacific Ocean > Northern Pacific Ocean > Aleutian Islands
NASA/GCMD Location Keywords Location > Ocean > Pacific Ocean > Western Pacific Ocean > Northern Marianas Islands

Instrument Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Instrument Keywords
GPS RECEIVERS > GPS RECEIVERS
Global Change Master Directory (GCMD) Instrument Keywords
GRAVIMETERS
Global Change Master Directory (GCMD) Instrument Keywords
IMU > INERTIAL MEASUREMENT UNIT
Global Change Master Directory (GCMD) Instrument Keywords
LRGM > Lacoste-Romberg Gravity Meter

Platform Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Platform Keywords
CESSNA CITATION II
Global Change Master Directory (GCMD) Platform Keywords
ENVISAT > Environmental Satellite
Global Change Master Directory (GCMD) Platform Keywords
ERS-1 > European Remote Sensing Satellite-1
Global Change Master Directory (GCMD) Platform Keywords
ERS-2 > European Remote Sensing Satellite-2
Global Change Master Directory (GCMD) Platform Keywords
GOCE > Gravity Field and Steady-State Ocean Circulation Explorer
Global Change Master Directory (GCMD) Platform Keywords
GPS > Global Positioning System Satellites
Global Change Master Directory (GCMD) Platform Keywords
GRACE > Gravity Recovery and Climate Experiment
Global Change Master Directory (GCMD) Platform Keywords
GROUND-BASED OBSERVATIONS > GROUND-BASED OBSERVATIONS
Global Change Master Directory (GCMD) Platform Keywords
JASON-1
Global Change Master Directory (GCMD) Platform Keywords
OSTM/JASON-2 > Joint Altimetry Satellite Oceanography Network - 2
Global Change Master Directory (GCMD) Platform Keywords
TOPEX/POSEIDON > Ocean Topography Experiment

Physical Location

Organization: National Geodetic Survey
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: Continually
Data Presentation Form: Table (digital)
Distribution Liability:

While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Support Roles

Data Steward

CC ID: 479958
Date Effective From: 2011-07
Date Effective To:
Contact (Position): GRAV-D Project Manager
Email Address: NGS.GRAVD@noaa.gov
Phone: 240-533-9641
Fax: 301-713-4327

Distributor

CC ID: 479960
Date Effective From: 2011-07
Date Effective To:
Contact (Position): GRAV-D Project Manager
Email Address: NGS.GRAVD@noaa.gov
Phone: 240-533-9641
Fax: 301-713-4327

Metadata Contact

CC ID: 479961
Date Effective From: 2011-07
Date Effective To:
Contact (Position): GRAV-D Project Manager
Email Address: NGS.GRAVD@noaa.gov
Phone: 240-533-9641
Fax: 301-713-4327

Point of Contact

CC ID: 479959
Date Effective From: 2011-07
Date Effective To:
Contact (Position): GRAV-D Project Manager
Email Address: NGS.GRAVD@noaa.gov
Phone: 240-533-9641
Fax: 301-713-4327

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 479964
W° Bound: -180
E° Bound: -65
N° Bound: 72
S° Bound: -18

Extent Group 1 / Time Frame 1

CC ID: 479963
Time Frame Type: Range
Start: 2008
End: 2022

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Reference Systems

Reference System 1

CC ID: 1270101

Coordinate Reference System
CRS Type: Geographic 3D
EPSG Code: EPSG:7909
EPSG Name: ITRF2000
▾ See Full Coordinate Reference System Information

Reference System 2

CC ID: 1270139

Coordinate Reference System
CRS Type: Geographic 2D
EPSG Code: EPSG:8999
EPSG Name: ITRF2008
▾ See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Constraints:

None
Data Use Constraints:

Must read and fully comprehend the metadata prior to use, acknowledgment of the Originator when using the data set as a source, data should not be used beyond the limits of the source scale

Distribution Information

Distribution 1

CC ID: 479965
Download URL: http://www.ngs.noaa.gov/GRAV-D/data_products.shtml
Distributor: GRAV-D Project Manager (2011-07 - Present)
Description:

Downloadable Data
File Type (Deprecated): ASCII
Distribution Format: Text (Unstructured)
Compression: Uncompressed

URLs

URL 1

CC ID: 479956
URL: http://www.ngs.noaa.gov/GRAV-D/data_products.shtml
URL Type:
Online Resource

URL 2

CC ID: 479957
URL: http://www.ngs.noaa.gov/
URL Type:
Online Resource

URL 3

CC ID: 1038656
URL: https://geodesy.noaa.gov/GRAV-D/images/GRAVD_thumbnail.png
Name: GRAV-D Blocks Browse Image
URL Type:
Browse Graphic
GRAV-D Blocks Browse Image
Description:

This is a map depicting GRAV-D data collection efforts in CONUS. GRAV-D also has data in or has plans to collect data in Alaska, Hawaii, Puerto Rico, American Samoa, and Guam. Green blocks are complete and data is available for download. Blue blocks are data that is in processing. Orange blocks have partial data collection. White blocks are planned.

Activity Log

Activity Log 1

CC ID: 480082
Activity Date/Time: 2014-10-31
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 480081
Activity Date/Time: 2017-04-05
Description:

Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 586768
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Catalog Details

Catalog Item ID: 39698
GUID: gov.noaa.nmfs.inport:39698
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 13:06+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-10-17 16:12+0000
Metadata Record Published: 2023-01-31
Owner Org: NGS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2023-01-31
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2024-01-31