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  • The Joseph Bonaparte Gulf survey (SOL4934, GA survey #0322) was conducted on the R.V. Solander between 27 August and 24 September 2009 in collaboration with staff from the Australian Institute of Marine Science (AIMS) and the Northern Territory Government. The survey was completed under a Memorandum of Understanding between GA and the AIMS and represents the second of three surveys planned under this agreement. The survey obtained detailed geological (sedimentological, geochemical, geophysical) and biological data for the banks, channels and plains to establish the late-Quaternary evolution of the region and investigate relationships between the physical environment and associated biota for biodiversity prediction. Underwater video footage and still images were collected from 46 stations, although quality varies among transects and some still images were not of suitable quality for analysis. In addition, shipboard photographs were taken of barcoded biological specimens. Video and image files or associated parent folders are named according to station number, followed by gear code (TV or CAM = same underwater camera system) and then the deployment number. For example 48CAM35 represents a video transect from Station 48 that was the 35th video transect on the survey.

  • 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 thorium grid has a cell size of 0.000833 degrees (approximately 90m) and shows thorium element concentration of the Kidson Areas A & B, WA, 1996 survey. The data used to produce this grid was acquired in 1996 by the WA Government, and consisted of 128005 line-kilometres of data at 400m line spacing and 60m terrain clearance.

  • Legacy product - no abstract available

  • 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 magnetic grid has a cell size of 0.000504 degrees (approximately 50m). The data used to produce this grid was acquired in 1995 by the TAS Government, and consisted of 90100 line-kilometres of data at 400m line spacing and 130m 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 0.00065 degrees (approximately 70m) and shows potassium element concentration of the Warrina, SA, 1981 (81SA07) (74rl) survey. The data used to produce this grid was acquired in 1981 by the SA Government, and consisted of 6179 line-kilometres of data at 300m 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. This radiometric thorium grid has a cell size of 0.001 degrees (approximately 110m) and shows thorium element concentration of the Huckitta East, NT, 1983 survey. The data used to produce this grid was acquired in 1983 by the NT Government, and consisted of 19592 line-kilometres of data at 500m line spacing and 100m terrain clearance.

  • Legacy product - no abstract available

  • 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 0.000833 degrees (approximately 90m) and shows potassium element concentration of the Andamooka - Stuart Shelf, SA, 1979 (79SA12) (74pd) survey. The data used to produce this grid was acquired in 1979 by the SA Government, and consisted of 29083 line-kilometres of data at 400m line spacing and 100m 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 thorium grid has a cell size of 0.004 degrees (approximately 430m) and shows thorium element concentration of the SW Canning Basin (La Grange, Munro, Mandora), WA, 1989 survey. The data used to produce this grid was acquired in 1989 by the WA Government, and consisted of 37055 line-kilometres of data at 1500m line spacing and 150m terrain clearance.

  • Legacy product - no abstract available