I am currently working on estimation of heat flow and geothermal regime of a basin using high resolution aeromagnetic data.I am also estimating the depth to the magnetic basement from 3-d euler deconvolution and spectral inversion.
Alex Hello
There are two main methods to determine the Curie discontinuity: (1) from magnetic data, and (2) from thermal data. Frequently the depths obtained from mentioned two methds do not coincided. What is reason of it? Which limitations has magnetic data processing? There problems are analyzed in detail in the articles (see RG database):
Pilchin, A.N. and Eppelbaum, L.V., 1997. Determination of magnetized bodies lower edges by using geothermal data. Geophysical Journal International, 128, No.1, 167-174.
Eppelbaum, L.V. and Pilchin, A.N., 2006. Methodology of Curie discontinuity map development for regions with low thermal characteristics: An example from Israel. Earth and Planetary Sciences Letters, 243, No. 3-4, 536-551.
Lev
Dear Alex,
Some aspects:
1) The magnetic spectrum depends on geometry of the causative bodies. What is the causative body at the Curie-point depth? Is it a layer or a half space or local body?
2) The regional extension (size) of the measured magnetic data determines the biggest definable spectral depth. If you haven't big enough data set you will never catch the Curie-depth.
3) Is there magnetic material at the supposed depth? If there is no magnetic material, what the spectral depth estimation will result?
4) The simple spectral depth estimation give the top of the magnetic body (at this case of the Curie depth). What about the thickness of this Curie depth zone?
You must think about these aspects!
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