From data.gov.au
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

North Central Tasmania magnetic grid geodetic

ARCHIVED

Created 13/01/2025

Updated 13/01/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This North Central Tasmania magnetic grid geodetic has a cell size of 0.00042 degrees (approximately 40m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 1999 by the TAS Government, and consisted of 39404 line-kilometres of data at 200m line spacing and 80m terrain clearance.

Files and APIs

Tags

Additional Info

Field Value
Title North Central Tasmania magnetic grid geodetic
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/4d386515-2923-4088-b58c-0202881b65c7
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 31/01/1999 - 18/03/1999
Geospatial Coverage {"type": "Polygon", "coordinates": [[[146.3094, -42.4685], [147.7511, -42.4685], [147.7511, -40.9743], [146.3094, -40.9743], [146.3094, -42.4685]]]}
Data Portal data.gov.au