Terrain correction correction Tasmania - results and implications

Mark Duffett

doi:10.1071/ASEG2018abT7_4G

1st Australasian Exploration Geoscience Conference – Exploration Innovation Integration

ISSN: 2202-0586
E-ISSN:

oa Terrain correction correction Tasmania - results and implications
Authors Mark Duffett^a
View Affiliations Hide Affiliations

^a Mineral Resources Tasmania, PO Box 56, Rosny Park, TAS, 7018, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2018, Issue 1st Australasian Exploration Geoscience Conference – Exploration Innovation Integration, Dec 2018, p. 1 - 6
DOI: https://doi.org/10.1071/ASEG2018abT7_4G
- Published online: 01 Dec 2018

Abstract

The terrain correction is a critical component of the complete Bouguer anomaly in Tasmania. New terrain correction values for the entire Tasmanian onshore gravity database have been recalculated using automatic methods. An improved Statewide digital elevation model was produced for this purpose.

The magnitude of the terrain correction adjustment ranges as high as 23 mGal, with the average approximately 2 mGal. The size of this change is such that significant alterations to extant gravity models are indicated.

Article metrics loading...

/content/journals/10.1071/ASEG2018abT7_4G

2018-12-01

2026-01-13

From This Site

/content/journals/10.1071/ASEG2018abT7_4G

dcterms_title,dcterms_subject,pub_keyword

-contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution

10

5

Full text loading...

References

Cogbill, A.H., 1990, Gravity terrain corrections calculated using digital elevation models: Geophysics, 55, 102-106.
Derbyshire, E., 1971, The bathymetry of Lake St Clair, western central Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 105, 49-58.
Duffett, M.L., 2016, Revising gravity terrain corrections in Tasmania: ASEG Extended Abstracts, 2016, 1-8. https://doi.org/10.1071/ASEG2016ab309
Lucieer, V., 2007), SeaMap Tasmania Bathymetric Data. Institute for Marine and Antarctic Studies, University of Tasmania. http://metadata.imas.utas.edu.au:/geonetwork/srv/en/metadata.show?uuid=fa2dbc70-44ab-11dc-8cd0-00188b4c0af8
Whiteway, T., 2009, Australian Bathymetry and Topography Grid, June 2009: Geoscience Australia, Canberra. http://dx.doi.org/10.4225/25/53D99B6581B9A

/content/journals/10.1071/ASEG2018abT7_4G

Article Type: Research Article

Keyword(s): complete Bouguer anomaly; digital terrain models; gravity; Tasmania; terrain correction

Most Cited This Month Most Cited RSS feed

- Inversion of data from electrical imaging surveys in water-covered areas
  
  Authors M. H. Loke and J. W. Lane
- Inversion of Magnetic Data from Remanent and Induced Sources
  
  Authors Robert G. Elllis, Barrry de Wet and Ian N. Macleod
- A comparison of smooth and blocky inversion methods in 2-D electrical imaging surveys
  
  Authors M. H. Loke, Ian Acworth and Torleif Dahlin
- Designing matched bandpass and azimuthal filters for the separation of potential-field anomalies by source region and source type
  
  Authors Jeffrey D. Phillips
- Bad Colour Maps Hide Big Features and Create False Anomalies
  
  Authors Peter Kovesi
- Practical 3D EM inversion – the P223F software suite
  
  Authors Art Raiche, Fred Sugeng and Glenn Wilson
- Estimating Noise Levels in AEM Data
  
  Authors Andy Green and Richard Lane
- Target delineation using Full Tensor Gravity Gradiometry data
  
  Authors Colm A. Murphy and James Brewster
- Transdimensional Monte Carlo Inversion of AEM Data
  
  Authors Ross C Brodie and Malcolm Sambridge
- The geotech VTEM time domain helicopter em system
  
  Authors Ken Witherly, Richard Irvine and Edward Morrison
More Less

oa Terrain correction correction Tasmania - results and implications

Abstract

Most Read This Month

Most Cited This Month Most Cited RSS feed