
TY  - JOUR
A1  - Annetts, David 
A1  - George, Richard 
A1  - Munday, Tim 
A1  - Ibrahimi, Tania 
A1  - Cahill, Kevin 
A1  - Paul, Robert 
A1  - Davis, Aaron 
T1  - The application of AEM to mapping sea-water intrusion at La Grange, WA
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 2015
VL  - 2015
IS  - 1
SP  - 1
EP  - 4
KW  - 
UR  - https://doi.org/10.1071/ASEG2015AB164 
N2  - We describe interpretation of an AEM survey around the La Grange allocation area, WA. This survey was designed to map aquifer bounds and the sea water intrusion, and then to assess groundwater in the region, and to facilitate planning water use. The simple, stratified nature of sediments of the western onshore Canning Basin allowed us to use blocky layered earth models and we found that five-layer models were the most parsimonious. After deriving surfaces representing the top of the Jarlemai siltstone and the top of the sea water ingress, we were able to effectively characterise the spatial characteristics of the sea water intrusion. We found that in places, sea water intruded 40 km inland, and could be found at a depth of over 250 m. 
ER  -

