The “peeling” method to process apparent resistivity data for earthquake precursory monitoring |
| |
| Authors: | Mao Xian-jin and Qian Jia-dong |
| |
| Institution: | (1) Seismological Bureau of Yunnan Province, 650041 Kunming, China;(2) Center for Analysis and Prediction, China Seismological Bureau, 100036 Beijing, China |
| |
| Abstract: | Considering the fact that there is only one pair of fixed potential poles in one direction used to monitor the resistivity
changes under the observatory station which may indicate process of earthquake preparation, based on the precondition that
the resistivity structure is 1-dimensional under the observatory station, and by way of equivalent model put forward by the
authors, this paper suggests a kind of method trying to separate the resistivity changes in deep layers from that of the shallow
layer. Analysis shows that, to obtain the same measured data with the same array, any a multi-layered geo-electrical structure
can be equivalently taken as a two-layered one, we call it equivalent model. In this paper, the resistivity and thickness
of the upper layer of the equivalent model are equal to that of the first layer of the original one, the resistivity of the
lower layer of the equivalent model is obtained with calculation according to the requirement of equivalence, its value is
relevant with the resistivities and thicknesses of all layer of the original model except for the first one, so the resistivity
change of the equivalent layer can indicate the synthetic effect of variation of all layers of the original model except for
the first one. The primary research results show that this method can work well.
Foundation item: Chinese Joint Seismological Science Foundation (100146). |
| |
| Keywords: | equivalent model geo-resistivity measurement by a single-pair of fixed potential poles resistivity changes deep layers identification |
| 本文献已被 SpringerLink 等数据库收录！ |
|
