青藏高原东北缘地区水氡异常特征与地震活动关系的探讨

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基金项目:

地震科学联合基金(300002)和中国地震局兰州地震研究所论著(编号:LC20040077)。

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

摘要: 将活动断裂与地震前兆现象相结合,运用地质力学观点,研究了青藏高原东北缘水氡前兆异常的区域特征,如异常本底、异常台项比,初步讨论了前兆异常分布偏离未来震中区的构造动力成因,提供了地震危险性估计、发震地点预报的定量分析指标,这些指标对该区域Ms ≥ 4.1级地震的预报具有一定的实用价值.
- 青藏高原东北缘 /
- 水氡 /
- 前兆异常机制 /
- 前兆偏离 /
- 地震预报
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.
- northeastern margin of the Qinghai-Tibetan Plateau /
- hydro-geochemistry /
- mechanism of precursor anomaly /
- departure of precursors from the epicenter /
- earthquake prediction