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 Wangaratta North South magnetic grid geodetic has a cell size of 0.00042 degrees (approximately 42m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 1996 by the VIC Government, and consisted of 84782 line-kilometres of data at a line spacing between 200m and 400m, and 80m terrain clearance.

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 Nabberu combined magnetic grid geodetic has a cell size of 0.00083 degrees (approximately 88m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 1996 by the WA Government, and consisted of 44375 line-kilometres of data at 400m line spacing and 80m terrain clearance.

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected 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. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered terrestrial dose rate grid. This GSWA Prince Regent Montague Merged Doserate Grid Geodetic has a cell size of 0.00083 degrees (approximately 91m) and shows the terrestrial dose rate of the Prince Regent-Cambden-Montague Sound-Charnley merge, 1994-2012. The data used to produce this grid was acquired in 1994 by the WA Government, and consisted of 187646 line-kilometres of data at a line spacing between 200m and 800m, and 50m terrain clearance.

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This GSWA Dumbleyung Nyabing Merge Elevation Grid Geodetic is elevation data for the Dumbleyung-Nyabing-Coblinine merge, 2002-2005. This survey was acquired under the project No. 1328 for the geological survey of WA. The grid has a cell size of 0.00021 degrees (approximately 21m). This grid contains the ground elevation relative to the geoid for the Dumbleyung-Nyabing-Coblinine merge, 2002-2005. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected 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. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered terrestrial dose rate grid. This GSWA Dumbleyung Nyabing Merge Doserate Grid Geodetic has a cell size of 0.00021 degrees (approximately 21m) and shows the terrestrial dose rate of the Dumbleyung-Nyabing-Coblinine merge, 2002-2005. The data used to produce this grid was acquired in 2002 by the WA Government, and consisted of 27617 line-kilometres of data at a line spacing between 100m and 400m, and 50m terrain clearance.

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected 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 radiometric potassium grid has a cell size of 0.00021 degrees (approximately 21m) and shows potassium element concentration of the Dumbleyung-Nyabing-Coblinine merge, 2002-2005 in units of percent (or %). The data used to produce this grid was acquired in 2002 by the WA Government, and consisted of 27617 line-kilometres of data at a line spacing between 100m and 400m, and 50m terrain clearance.

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected 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 radiometric uranium grid has a cell size of 0.00021 degrees (approximately 21m) and shows uranium element concentration of the Dumbleyung-Nyabing-Coblinine merge, 2002-2005 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2002 by the WA Government, and consisted of 27617 line-kilometres of data at a line spacing between 100m and 400m, and 50m terrain clearance.

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 GSWA Kellerberrin Southern Cross Boorabbin Hyden Lake Johnston Magnetic Merged Grid Geodetic has a cell size of 0.00083 degrees (approximately 86m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2004 by the WA Government, and consisted of 132046 line-kilometres of data at a line spacing between 200m and 400m, and 60m terrain clearance.

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected 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 radiometric uranium grid has a cell size of 0.00083 degrees (approximately 86m) and shows uranium element concentration of the Kellerberrin-Southern Cross-Boorabbin-Hyden-Lake Johnston merge, 2004-2005 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2004 by the WA Government, and consisted of 132046 line-kilometres of data at a line spacing between 200m and 400m, and 60m terrain clearance.

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This GSWA Boorabbin Lake Johnston Elevation Grid Geodetic is elevation data for the Boorabbin-Lake Johnston merge, 1987-2005. This survey was acquired under the project No. 1331 for the geological survey of WA. The grid has a cell size of 0.0005 degrees (approximately 51m). This grid contains the ground elevation relative to the geoid for the Boorabbin-Lake Johnston merge, 1987-2005. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.