An iterative approach to optimising depth to magnetic source using the spectral method

Meixner, A.J.; Johnston, Stephen T.

doi:10.1071/aseg2012ab214

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2015

2023

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“…Field data often show such a diagnostic behaviour in their power spectra, so the method has since been applied often, such as by Meixner and Johnston (2012), but the method requires human intervention to choose the relevant segment of the spectrum. Maus and Dimri (1996) show that the geometric information of the sources dominates the spectrum, so depths obtained from the slopes of line segments along the power spectrum are inevitably very noisy.…”

Section: Introductionmentioning

confidence: 99%

Constraints on interpreting magnetic spectral depths

Clifton

2015

ASEG Extended Abstracts

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Section: Introductionmentioning

confidence: 99%

Constraints on interpreting magnetic spectral depths

Clifton

2015

ASEG Extended Abstracts

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Magnetic constraints and susceptible inversions of Balapur Fault at central Kashmir Basin, NW Himalaya

Dar

Bukhari

2023

Lithosphere

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Research subject. Subsurface investigations of the Balapur Fault at central Kashmir Basin, NW Himalaya through groundmagnetic surveys and data interpretations. Materials and methods. The total magnetic intensity data was obtained using ground magnetic surveys carried out by proton precession magnetometers at 15 m spacing. The magnetic constraints and inversions of the Balapur fault in the central Kashmir basin of NW Himalaya were analyzed. Results. The total magnetic intensity was found averaging at 97.7 with 45.8 nT as magnetic minima and 140.9 nT as magnetic maxima. The minima’s ranging from 45.8 and 55.8 nT in the gridded profile are inferred at the Balapur fault. Further, the fault-related susceptibility index was recorded from 0.0035 SI to 0.0015 SI, and the observed and predicted response values were found ranging between 67.1 to 87.7 and 67.4 to 86.6 nT respectively. Conclusion. The study suggests that the Balapur fault in the central Kashmir has produced high subsurface hydraulic activities and, therefore, evident low magnetic anomalies. The analysis reveals a thick minima region related to the fault and also indicated the presence of associated structures with the main Balapur fault segment.

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An iterative approach to optimising depth to magnetic source using the spectral method

Cited by 2 publications

References 6 publications

Constraints on interpreting magnetic spectral depths

Constraints on interpreting magnetic spectral depths

Magnetic constraints and susceptible inversions of Balapur Fault at central Kashmir Basin, NW Himalaya

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