School of Physics and Astrophysics

Postgraduate research profiles

Contact

Hosain MD Akhter

Phone: (+61 8) 6488 4551


Supervisors

Start date

Jan 2013

Submission date

Jan 2016

Hosain MD Akhter

Thesis

High performance electromagnetic airborne mineral exploration for discovery of deep earth resources

Summary

This research project aims to demonstrate an innovative Electromagnetic (EM) sensor for deep earth exploration that employs my proposed supervisors' patented noise isolation technology in a compact system suitable for survey aircraft.

The detection of minerals deep in the earth requires very sensitive instrumentation to sense the lowest frequency components of very weak electromagnetic decay signals. The decay signal is easily corrupted by vibration noise due to angular motion of sensor in the Earth's magnetic field. To remedy this problem, sensor coils are commonly placed in a rotational vibration isolator. Other existing systems do not provide adequate isolation, especially for exploration looking for ore bodies that are deeper in the earth crust. My proposed supervisors have developed a device with good vibration attenuation below 10 Hz. This shows great promise compared with conventional devices that are limited to ~ 25 Hz.

In this research project, I intended to develop an improved very low frequency Electromagnetic sensor combined with noise isolation techniques that aims to achieve the theoretical limit to sensitivity ~ 30 pT/sec/√Hz. This device will be tested in surveys of water resources, and minerals exploration; all of which offer national benefit to Australia. The project is supported by Fugro Ltd and funded under an ARC linkage grant.

Why my research is important

The proposed research project is to develop a high performance electromagnetic device for deep earth airborne exploration. Airborne Electromagnetic mineral exploration is a powerful tool, but to become more effective, it needs improvements in data quality. Improved signal to noise ratio will allow deeper exploration, better spatial resolution and improved conductance discrimination. The new electromagnetic sensor with improved isolation technology will be a suitablecompact system for use with small survey aircraft. Its practical applications will be water resource mapping and mineral exploration. Both are of great economic importance and offer national benefit to Australia.

Funding

  • ARC grant
  • Australian Post-graduate Award (APA) and UWA Safety Net Top-up Scholarship


 

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Last updated:
Monday, 2 August, 2010 2:54 PM

http://www.physics.uwa.edu.au/1023927