中强震前形变固体潮汐资料短期信息的提取

EARTHQUAKE ›› 2003, Vol. 23 ›› Issue (3): 71-78.

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Short-term anomaly extracted from tidal deformation data before moderately strong earthquakes

ZHANG Jing¹, ZHANG Li²

1. Center for Analysi s and Predi ction, CSB, Beijing 100036, China;
2. Seismologi cal Bureau of Yunnan Province, Kunming 650041, China

Received:2002-09-09 Revised:2002-12-19 Online:2003-07-31 Published:2021-12-21

Abstract

Abstract: In this paper, several methods to process tidal data were analyzed.In order to extract the short-term anomaly, the approaches to deal with tidal data were given, and the formula concerning tidal calculating method has been deduced and developed.By calculating various deformation data in North China and Southwest China regions, some tidal parameters such as tidal factors and loading and unloading response ratios (LURR)were extracted and analyzed.The short-term tidal anomaly in and around focal region was stressed.The characteristics of variation of these parameters were discussed.

Key words: Deformation observation, Tidal parameter, Short-term anomaly

CLC Number:

P315.72+5

ZHANG Jing, ZHANG Li. Short-term anomaly extracted from tidal deformation data before moderately strong earthquakes[J]. EARTHQUAKE, 2003, 23(3): 71-78.

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Short-term anomaly extracted from tidal deformation data before moderately strong earthquakes

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