6:15 PM - 7:30 PM
[STT52-P03] Semi-automatic interpretation methods using gravity gradient tensor data obtained by airborne gravity gradient survey
In general, the techniques that estimate subsurface structures from gravity anomaly without geological and geophysical constraint conditions are called semi-automatic interpretation methods. These methods not only employ high-pass filtering but also estimate causative sources by using eigenvalues and/or eigenvectors of gravity gradient tensor.
In this presentation, we will first review the filtering and semi-automatic interpretation methods that use gravity gradient tensor. Then, we will report the results obtained by applying these methods to the gravity gradient data acquired for the Kuju geothermal area of Kyushu district through FALCON (R) AGG. We will also discuss the characteristic features of these methods and improvements in their practical application.
The results presented here were obtained from the project ‘Investigations on applications of airborne gravity surveys to geothermal resources surveys’ by JOGMEC. We are most grateful to JOGMEC for making the data available to us.