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| | Abstract | | Airborne geophysical surveys acquired at low flight height close to the ground are the quick, effective and cost-saving method to evaluate the geothermal resources potential. The two-dimensional analysis can be achieved with such a fine grid interval as 25m. The integrated analysis of gravity-gradient and geomagnetic survey data applying the moving window Poisson's analysis will lead to the assessment of the detailed near-surface magnetization-to-density ratio. The faults are properly interpreted by the linearity of magnetization-to-density ratio, which is formed under the regional compressional stress fields. The application of the observation data is satisfactory enough to reveal the type of faults, heat sources and reservoirs of geothermal fluid, etc. |
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