Estimation of crustal thickness by combination of two geophysical methods: A case study

摘要

In this study an extended geophysical survey using gravity and high angle refracted seismic methods with recorded earthquake has been carried out in Kerman province in southeast of Iran. The purpose of the applied geophysical surveys was to provide information on crustal structure and lithospheric thickness. The purpose of this research is focused on determination of Moho depthand for this reason several profiles for both methods were performed and by use of topography and gravity data with a reasonable combination with high angle refracted seismic data and earthquake record, the crustal and lithospheric thickness of Kerman province in the southeast of Iran was calculated.Oldenburg- Parker algorithm was the base of gravity survey of the present work but by use of Matlab programming environment and generated C Sharp computer codes was optimized, improve and then executed. For seismic data, a least-squares analysis of the travel-time data was made and the uncertainties were taking in to account. Finally, depth calculations for the velocity discontinuities and gravity anomaly contour maps were made. The comprehensive comparison between the obtained results and other studies on the selected area showed good agreement, which verified the ability of produced code.