A PRELIMINARY STUDY OF HYDROCHEMICAL PRECURSORY AMOMALIES NETWORK AND THE CHARACTERISTICS OF HYDROCHEMICAL PRECURSORY ANOMALIES DISTRIBUTION OF THE TANGSHAN EARTHQUAKE
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Graphical Abstract
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Abstract
The plane distribution of hydrochemical anomalies is like a network in shape and similar to seismic actve pattern.The bydrochemical anomalies of Tangshan earthquake occurred along a northestern or northwastern precusory trace, and showed stagcs.The hydrochemical anomalies showed that some faults had activities before and after the carthquake.
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