CHARACTERISTICS OF RADON ANOMALIES IN WATER ON THE NORTHEASTERN MARGIN OF THE QINGHAI-TIBETAN PLATEAU AND THEIR RELATIONS TO EARTHQUAKES

LI Zuo-tang; HE Shao-lin; LIU Bin; YIN Zhi-gang; LI Qiu-hong; DANG Hong

Volume 11 Issue 2

Jun. 2005

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LI Zuo-tang, HE Shao-lin, LIU Bin, et al., 2005. CHARACTERISTICS OF RADON ANOMALIES IN WATER ON THE NORTHEASTERN MARGIN OF THE QINGHAI-TIBETAN PLATEAU AND THEIR RELATIONS TO EARTHQUAKES. Journal of Geomechanics, 11 (2): 117-128.

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CHARACTERISTICS OF RADON ANOMALIES IN WATER ON THE NORTHEASTERN MARGIN OF THE QINGHAI-TIBETAN PLATEAU AND THEIR RELATIONS TO EARTHQUAKES

1. Lanzhou Institute of Seismology, China Seismological Bureau, Lanzhou 730000, Gansu, China;
2. University of Science and Technology, Hefei 230026, Anhui, China

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Received: 2004-12-19
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Abstract

Abstract

By combining the geomechanical point of view and active fault distribution with the earthquake precursor phenomena,the paper discusses the regional characteristics of the hydro-geochemical seismic precursor anomalies on the northeastern margin of the Qinghai-Tibetan plateau,e.g.the background level of the precursor anomaly and anomaly ratio.The tectonodynamic cause of the departure of precursor anomalies from the future epicenter is preliminarily discussed and the quantitative indications for the seismic risk estimates and seismogenic location forecasting are provided,which have certain practical value for the prediction of earthquakes of Ms ≥ 4.1 in the area.