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Groundwater Dating and Its Application to Earthquake Monitoring

Earthquake Research in China 2015年第4期29卷 423-433页

作者： Zhang Guomeng Liu Yaowei Zhang Lei Ren Hongwei Key Laboratory of Crustal Dynamics Institute of Crustal DynamicsCEA pricewaterhouse coopers zhong tian llp Beijing Branch Institute of Geophysics CEA

Monitoring and study of dynamic characteristics of groundwater are significant methods of earthquake monitoring and forecasting. For research on groundwater dynamics,groundwater dating can qualitatively and quantitatively provide scientific analysis on the characteristics of groundwater recharge and runoff as well as renewal capacity. This article illustrates the methods used globally and summarizes the main advances and achievements in groundwater dating. It also focuses on the relationships between groundwater renewal capacity and seismic monitoring,groundwater movement and seismic activity,shallow groundwater recharge and abnormal interference elimination. The studies show that groundwater dating plays an important role in water-rock interaction,and geological tectonic and seismic activity evaluation. Therefore,groundwater dating can be widely used to monitor and analyze the precursor information in seismic underground fluid observations in the near future.

关键词： Groundwater age Dating methods Earthquake monitoring and forecasting

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Does a national industrial policy promote financial market stability?A study based on stock price crash risk

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China Journal of Accounting Research 2022年第4期15卷 110-132页

作者： Weimin Xie Hengxin Zhang Jialu Guo Miao He School of Accounting China Internal Control Research CenterDongbei University of Finance and EconomicsChina School of Accounting Dongbei University of Finance and EconomicsChina pricewaterhouse coopers zhong tian llp Beijing BranchChina

Whether the implementation of a national industrial policy can maintain stability in the financial market is a question of theoretical and practical significance. Using data from China’s non-financial listed firms from 2007 to 2020,we find that a national industrial policy lowers stock price crash risk. We find that the effect of an industrial policy on lowering stock price crash risk is more pronounced in regions with low levels of regional marketization and if firms have high external uncertainty, low total asset turnover, greater earnings management and receive small increments of long-term loans and fewer government subsidies, suggesting that industrial policies lower stock price crash risk by improving firm fundamentals and reducing external uncertainty,agency costs and information asymmetry.

关键词： National industrial policy Stock price crash risk Financial market stability

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