Processing...

Musgrave Province Airborne Electromagnetic Conductivity Grids

Tools Click here to view this collection in the new DAP user interface

show summary fields  |   show all    
Tools



About this Collection

Musgrave Province Airborne Electromagnetic Conductivity Grids


Airborne electromagnetic surveys undertaken in the Musgraves Province in South Australia Queensland, Australia. The surveys were flown between the 18th August 2016 and 14th October 2016. Project As part of the Goyder Institutes Facilitating Long-Term Outback Water Solutions Stage 3 (G-FLOWS 3) two airborne electromagnetic (AEM) surveys were flown... more


Electrical and Electromagnetic Methods in Geophysics Geology not elsewhere classified


https://doi.org/10.25919/5d0868d48591e


18 Aug 2016


14 Oct 2016


Tim Munday
Tim.Munday@csiro.au

airborne electromagnetics electromagnetics musgraves conductivity geophysics TEMPEST SkyTEM


Metadata.docx


Inversion Both the TEMPEST and SkyTEM data was inverted using the Aarhus Workbench processing and inversion software which uses the AarhusInv full non-linear inversion algorithm. A laterally constrained inversion (LCI) methodology. Lateral constraints, which are defined for adjacent soundings allow prior information to migrate along flight lines. This can enhance the connection of layer parameters between adjacent soundings. The inversion of the SkyTEM data solved for the Z-component and the transmitter height, whereas the TEMPEST inversion solved for both the Z and the X component data along with the transmitter height and the position and pitch of the receiver bird. Inversion model A smooth layer model was used for the inversion of these datasets. This type of model consists of a number of layers with fixed thicknesses, often increasing with depth. The amount the conductivity can vary from one layer to the next is defined by vertical constraints. A 30 layer model was used with the first thickness chosen to be 3m and logarithmically increasing layer thicknesses down to 300m, which was the depth of the last layer boundary. Interval conductivities Conductivity-depth intervals in 10m intervals from the surface to 200m depth, were generated from the inversion results of the two AEM datasets. The intervals were gridded using kriging with a cell size of 400m. The two datasets where then merged together to form “seamless” grids. Depth of investigation The depth of investigation (DOI) provides a depth to which the model is the most reliable, and model information below the DOI should be used with caution. The grids are blanked by the DOI.


CSIRO Data Licence


CSIRO (Australia)


Munday, Tim (2019): Musgrave Province Airborne Electromagnetic Conductivity Grids. v1. CSIRO. Data Collection. https://doi.org/10.25919/5d0868d48591e


All Rights (including copyright) CSIRO 2019.


The metadata and files (if any) are available to the public.

show all

Location Details

26°2′27.6414″ S


27°39′14.7376″ S


133°30′36.2981″ E


130°2′18.4171″ E


GDA94


More about this Collection

Tania Ibrahimi


GIS Analyst





Grid




eng


UTF8


Geoscientific Information


About this Project

Goyder Finding Long-term Outback Water Solutions: Stage-3 (G-Flows Stage-3)


As part of the Goyder Institutes Facilitating Long-Term Outback Water Solutions Stage 3 (G-FLOWS 3) two airborne electromagnetic (AEM) surveys were flown to assist in a regional groundwater resources assessment in an otherwise data poor area.


Mat Gilfedder





Tim Munday


Similar collections

  • Flight Lines of Flinders River SkyTEM Airborne Electromagnetic Survey....
    view
  • Flight Lines of Gilbert River SkyTEM Airborne Electromagnetic Survey....
    view