标题：Estimating the Hidden Gravity Lineaments Depths by Using Special Function Method and Comparing them with the Earthquake Focal Depths: A Case Study of Gujarat Province
出版社：geodynamics Research International Bulletin Online
摘要：This paper investigates the 2001 Gujarat earthquake, one of the world’s most destructive earthquakes, which occurred in western India. The method used in this study was based on gravity data and satellite image processing. The EGM-2008 global gravity model has been used as the reference data. Thus, in the first place, the afore-mentioned gravimetric data was processed by using Oasis Montaj 7.0.1 Software. Then, in order to trace the edge of the buried anomalies in a better way, it was tried to apply the total horizontal gradient filter. Next, to complete the hidden lineaments location, a combination of gravity gradient components was used. Afterwards, Special Function Method (SFM) was used to achieve precise positioning of the depths and the trends of the hidden gravity lineaments. Finally, they were compared with the earthquake focal depths. All the obtained results were compared with earthquakes epicenter using satellite images. The performed analysis and the results of the interpretation of the gravimetric data indicate that there is a significant correlation between focal depths and the depths obtained by this method. Thus, it can be concluded that this method can help us to estimate the depths of the future earthquakes.
