Rapid approximate imaging of electromagnetic data acquired using multichannel distributed acquisition systems. This project will investigate techniques for rapid, multidimensiuonal imaging of electromagnetic data acquired using modern multichannel distributed acquisition systems. This research will provide high-resolution images of buried ore deposits at greater depths than is possible using current instruments and processing techniques.
Three-dimensional magnetotelluric imaging of lithospheric-scale mineral systems from source to deposit. Geochemical studies indicate that world-class mineral deposits are partly sourced from fluids emerging from Earth's mantle and lower crust. Finding major mineral deposits in the future will therefore require knowledge of which parts of the crust and mantle yield the most prospective locations. However, there are few methods that can image deep Earth resources, and these can be very expensive ....Three-dimensional magnetotelluric imaging of lithospheric-scale mineral systems from source to deposit. Geochemical studies indicate that world-class mineral deposits are partly sourced from fluids emerging from Earth's mantle and lower crust. Finding major mineral deposits in the future will therefore require knowledge of which parts of the crust and mantle yield the most prospective locations. However, there are few methods that can image deep Earth resources, and these can be very expensive. We propose to develop the magnetotelluric method as a low-cost and rapid approach for delineating 3D information on deep mineral systems beneath existing major deposits, and adapting this to explore in greenfield locations.Read moreRead less
Accurately locating the depth and distribution of saline waters with improved shallow conductivity sounding using broadcast radio transmissions. Conductivity meters such as the EM31 are in routine use for mapping shallow salinity, but provide no depth information. This research will provide methodology using broadcast radio transmissions to additionally provide the depth information needed to interpret shallow layering and inhomogeneity. Instruments will initially be tested on the ground, but a ....Accurately locating the depth and distribution of saline waters with improved shallow conductivity sounding using broadcast radio transmissions. Conductivity meters such as the EM31 are in routine use for mapping shallow salinity, but provide no depth information. This research will provide methodology using broadcast radio transmissions to additionally provide the depth information needed to interpret shallow layering and inhomogeneity. Instruments will initially be tested on the ground, but are ultimately intended to be applied from the air, where existing systems have no resolution in the top 5 m. The method will provide crucial root-zone data for precision agriculture in salt-affected areas, and address accurate salt mapping issues in the major efforts to combat Australia's salinity problems.Read moreRead less
Resistivity of typical rocks at crustal pressure and temperature conditions from combined laboratory and magnetotelluric measurements. Magnetotelluric surveys are playing an increasing role in Australian geoscience, including academic research, data collected by geological surveys (including a role in Geoscience Australia's $58.9 million Onshore Energy and Security Program), mineral exploration and geothermal exploration. This project will enable the results of these surveys to be interpreted mo ....Resistivity of typical rocks at crustal pressure and temperature conditions from combined laboratory and magnetotelluric measurements. Magnetotelluric surveys are playing an increasing role in Australian geoscience, including academic research, data collected by geological surveys (including a role in Geoscience Australia's $58.9 million Onshore Energy and Security Program), mineral exploration and geothermal exploration. This project will enable the results of these surveys to be interpreted more accurately and meaningfully by constraining the expected resistivities of crustal rocks at various pressures and temperatures. This research is vital if the investment currently being put into MT surveys is to be capitalized upon. Read moreRead less