Geophysical Data Collection - elevation  


Authors / CoAuthors

Geoscience Australia

Abstract

Digital Elevation Model data record the terrain height variations from the processed point-located data recorded on an airborne geophysical survey. The aircraft altimeter data records the height of the aircraft above the ground and the aircraft GPS records the height of the aircraft above the ellipsoid. Subtracting the two values enables the height of the terrain beneath the aircraft relative to the ellipsoid to be calculated. This ellipsoidal terrain height is corrected for the variation between the ellipsoid and the geoid (the n-value correction) to produce terrain heights relative to sea level.

Product Type

collection

eCat Id

74515

Contact for the resource

  Resource provider

RD  

  Owner

Commonwealth of Australia (Geoscience Australia)  

  Custodian

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Keywords

( Theme )
  • geophysics
( Theme )
  • Digital Elevation Model
  • AU-EEZ
Australian and New Zealand Standard Research Classification (ANZSRC)
  • Geophysics
( Theme )
  • Geophysical Data Collection
( Theme )
  • Airborne Digital Data
( Theme )
  • NCI
( Theme )
  • DC2020
  • Published_External

Publication Date

2008-01-01T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Special, MOU, etc.

Access - license

Use - license

Status

Purpose

Maintenance Information

asNeeded

Topic Category

geoscientificInformation

Series Information

Lineage

The DEM data of Australia contains elevation data recorded during several airborne geophysical surveys by Commonwealth, State and Northern Territory Governments, and the private sector. Additional data from open source are also added to the collection.

Parent Information

Australian Geophysical Data Collection

UUID - 0a83ee36-d332-4669-a9fc-dfa7cec5c703,

eCat ID - 100444

Extents

[-55, -9, 90, 175]

Reference System

Spatial Resolution

Service Information

Associations

Downloads and Links

Related Product  

Source Information

The DEM data of Australia contains elevation data recorded during several airborne geophysical surveys by Commonwealth, State and Northern Territory Governments, and the private sector, as well as some open source data. 90 175 -55 -9