Shallow velocity structure in Lücun-Fanxian profile |
| |
| Authors: | Zheng-Qin He |
| |
| Institution: | 1. Institute of Geophysics, State Seismological Bureau, 100081, Beijing, China
|
| |
| Abstract: | Based on the short period surface wave recorded by DSS of Project 85009, the Rayleigh wave dispersion of phase velocity is determined with the periods from 0.3s to 1.07s in Lücan-Fanxian Profile in this paper. The profile is divided into 7 sections by their dispersion characteristics, and the shallow velocity structure is inversed for each section. It shows that velocity obviously increases at the bottom of Neogene in the eastern region of the profile; that not only does Rayleigh wave velocity evidently decreases but also its waveform conspiciously changes across Neihuang fault, Changyuan fault and Liaolan fault respectively, by which the corresponding surface positions of these faults can be exactly determined; and that not only is S wave velocity between Changyuan fault and Liaolan fault smaller than that of its two sides, but also the buried depth of Neogene bottom is obviously larger than that of the two sides. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
