Experiments on Exploration of Shallow Fine Structures and the Construction of the 1-D Velocity Model in the Pingtan Island,Fujian

作者：GUO Yang,XU Jiajun,LIN Chen,JIN Xing,YAO Huajian,YANG Hongfeng,CAI Huiteng

摘要：112 short-period seismographs were set up in the 400 km^2 area of Pingtan Island and its surrounding areas in Fujian.The combined observations of the airgun source and ambient noise source were carried out using a dense array to receive the 387 airgun signals excited around the island and one month of continuous ambient noise recording.The 1-D P-wave and S-wave shallow velocity model of Pingtan Island is obtained by the inversion of the airgun body wave’s first arrival time data,and the reliability of the velocity model is verified by using the surface wave phase velocity dispersion curve,which can provide initial model for subsequent 3-D imaging.The experimental results show that this experiment is a successful demonstration of local scale green non-destructive detection,which can provide basic data for shallow surface structure research and strong vibration simulation of the Pingtan Island.

发文机构：Fujian Earthquake Agency School of Earth and Space Sciences School of Earth Sciences and Engineering Earth System Science Programme

关键词：PINGTANISLANDFujianDENSEarrayAirgunAMBIENTnoise1-Dvelocitymodel

分类号： P[天文地球]