GETMAG – a SQUID mag etic tensor gradiometer for mineral and oil exploration
نویسندگان
چکیده
The system has been demonstrated over a magnetite skarn deposit at Tallawang, near Gulgong, NSW, which is essentially two-dimensional (2D). The 2D structure was important because it allowed an unaliased total magnetic intensity (TMI) survey to be carried out in parallel, from which tensor components could be calculated to directly compare with the tensor components measured with the rotating gradiometer. The agreement was found to be excellent, confirming the accuracy and calibration of GETMAG and the Fourier filtering method of the calculation.
منابع مشابه
New Matching Method for Accelerometers in Gravity Gradiometer
The gravity gradiometer is widely used in mineral prospecting, including in the exploration of mineral, oil and gas deposits. The mismatch of accelerometers adversely affects the measuring precision of rotating accelerometer-based gravity gradiometers. Several strategies have been investigated to address the imbalance of accelerometers in gradiometers. These strategies, however, complicate grad...
متن کاملFeature Article: SQUID Applications •Medical Applications - Application of SQUIDs for Minerals Exploration
Between 2010 and 2011, the author’s group developed a practical SQUID system applicable to minerals exploration under the development of the next generation SQUITEM equipment and SQUID magnetometers, commissioned by Japan Oil, Gas and Metals National Corporation (JOGMEC). With the successful completion of final tests in Australia, a practically designed SQUID system developed for electromagneti...
متن کاملMagnetic susceptibility as a tool for mineral exploration (Case study: Southern of Zagros Mountains)
Magnetic susceptibility has been extensively used to determine the magnetic properties of rocks for different applications, such as hydrocarbon or mineral explorations. This magnetic quantity can be directly measured in an accurate but time-consuming operation, or it can be mathematically approximated using a reliable procedure to achieve a desired accuracy. The Poisson theory is one of the mos...
متن کامل3D Inversion of SQUID Magnetic Tensor Data
Developments in SQUID-based technology have enabled direct measurement of magnetic tensor data for geophysical exploration. For quantitative interpretation, we introduce 3D regularized inversion for magnetic tensor data. For mineral exploration-scale targets, our model studies show that magnetic tensor data have significantly improved resolution compared to magnetic vector data for the same mod...
متن کاملHigh-Tc SQUID gradiometer system for magnetocardiography in an unshielded environment
We set up an electronic gradiometer for magnetocardiography (MCG) in an unshielded environment. The electronically balanced gradiometer consists of high-temperature radio-frequency superconducting quantum interference device (rf SQUID) magnetometers. The rf SQUID magnetometers are arranged to form the electronic first-order, four-vector gradiometer, or second-order gradiometer. The output of th...
متن کامل