1 SURVEY OF GLOBAL SEISMICITY A total of 17 strong earthquakes with MS≥7.0 occurred in 2016(by the end of December31,2016)throughout the world,according to the China Seismic Network.Among them,one earthquake with M_S...1 SURVEY OF GLOBAL SEISMICITY A total of 17 strong earthquakes with MS≥7.0 occurred in 2016(by the end of December31,2016)throughout the world,according to the China Seismic Network.Among them,one earthquake with M_S8.0 occurred on November 13,2016 in New Zealand(Fig.1).The 2016New Zealand M_S8.0 earthquake(M_W7.8 measured by USGS)was the strongest展开更多
Ⅰ. SURVEY OF THE GLOBAL SEISMICITY A total of 28 earthquakes of M_s ≥7.0 occurred over the entire world in 1996 according to the determination by the Chinese Seismic Station Network. The strongest one is the Irian e...Ⅰ. SURVEY OF THE GLOBAL SEISMICITY A total of 28 earthquakes of M_s ≥7.0 occurred over the entire world in 1996 according to the determination by the Chinese Seismic Station Network. The strongest one is the Irian earthquake (M_s 7.9, February 17, 1996, Indonesia) (Fig. 1). It is considered that the global seismicity in 1996 is still situated in the active period based on the comprehensive analysis of its frequency, magnitude, and range.展开更多
1. SURVEY OF SEISMICITY IN CHINA IN 1995 A total of 48 earthquakes with M_s≥5.0 occurred in China in 1995 (30 on the Chinese mainland and offshore, 1 in the South China Sea, and 17 in Taiwan) (Fig. 1). Among these, 8...1. SURVEY OF SEISMICITY IN CHINA IN 1995 A total of 48 earthquakes with M_s≥5.0 occurred in China in 1995 (30 on the Chinese mainland and offshore, 1 in the South China Sea, and 17 in Taiwan) (Fig. 1). Among these, 8 earthquakes展开更多
I. SURVEY OF GLOBAL SEISMICITY IN 1998 A total of 17 earthquakes with M_s≥7.0 occurred in the world in 1998 according to the determination by the Chinese Seismic Station Network. The strongest earthquake occurred in ...I. SURVEY OF GLOBAL SEISMICITY IN 1998 A total of 17 earthquakes with M_s≥7.0 occurred in the world in 1998 according to the determination by the Chinese Seismic Station Network. The strongest earthquake occurred in Sulawesi, Indonesia (M_s7.8, November 5, 1998). The next strongest earthquake was the South Pacific Ocean earthquake (M_s7.7, March 25, 1998) and the Ryukyu earthquake (M_s7.7, May 4) (Fig. 1).展开更多
1. A SURVEY OF THE GLOBAL SEISMICITYAccording to the recording of the seismic network of China, 20 large earthquakes with Ms ≥7.0 occurred in 2000 (Table 1 ), the maximum magnitude of which is 7.8, they are: three Ms...1. A SURVEY OF THE GLOBAL SEISMICITYAccording to the recording of the seismic network of China, 20 large earthquakes with Ms ≥7.0 occurred in 2000 (Table 1 ), the maximum magnitude of which is 7.8, they are: three Ms = 7.8 earthquakes on June 5 in the south of the Sumatra Island, Indonesia, on June 18 in India Ocean and on November 16 in Solomon Islands (Fig. 1).展开更多
A total of 48 earthquakes with M_s ≥5.0 occurred in China in 1994 (29 on the Chinese mainland and offshore, 19 in Taiwan). Among them 9 earthquakes were of M_s ≥6.0 (4 on the mainland and offshore, 5 in Taiwan). The...A total of 48 earthquakes with M_s ≥5.0 occurred in China in 1994 (29 on the Chinese mainland and offshore, 19 in Taiwan). Among them 9 earthquakes were of M_s ≥6.0 (4 on the mainland and offshore, 5 in Taiwan). The M_s 7.3 earthquake that occurred in Taiwan Straits on September 16 was the greatest one offshore, which was generally included in the mainland area according to the previous statistics. The most powerful earthquakes in Taiwan were the 2 with M_s =7.0 that occurred on展开更多
Ⅰ. SURVEY OF GLOBAL SEISMICITY A total of 23 earthquakes with M_s ≥ 7.0 occurred over the world in 1997 according to the determination of the Chinese Seismic Station Network. The strongest one was the Kamchatka peni...Ⅰ. SURVEY OF GLOBAL SEISMICITY A total of 23 earthquakes with M_s ≥ 7.0 occurred over the world in 1997 according to the determination of the Chinese Seismic Station Network. The strongest one was the Kamchatka peninsula earthquake (M_s 7.9, December 5, 1997) (Fig. 1). Although the frequency and strength of global seismicity was lower compared with the higher activity state in 1995 and 1996, the frequency of seismicity was still obviously higher than the average level during this century.展开更多
China is a country of high seismicity with many hydropower resources. Recently,a series of high arch dams have either been completed or are being constructed in seismic regions,of which most are concrete dams. The eva...China is a country of high seismicity with many hydropower resources. Recently,a series of high arch dams have either been completed or are being constructed in seismic regions,of which most are concrete dams. The evaluation of seismic safety often becomes a critical problem in dam design. In this paper,a brief introduction to major progress in the research on seismic aspects of large concrete dams,conducted mainly at the Institute of Water Resources and Hydropower Research(IWHR) during the past 60 years,is presented. The dam site-specific ground motion input,improved response analysis,dynamic model test verification,field experiment investigations,dynamic behavior of dam concrete,and seismic monitoring and observation are described. Methods to prevent collapse of high concrete dams under maximum credible earthquakes are discussed.展开更多
基金sponsored by the National Natural Science Foundation of China(41504047)the National Sichuan-Yunnan Earthquake Monitoring and Prediction Site Program of China(2016CESE0101) the 2016 Youth Fund of Earthquake Situation Tracking Work,CEA (2016010109)
文摘1 SURVEY OF GLOBAL SEISMICITY A total of 17 strong earthquakes with MS≥7.0 occurred in 2016(by the end of December31,2016)throughout the world,according to the China Seismic Network.Among them,one earthquake with M_S8.0 occurred on November 13,2016 in New Zealand(Fig.1).The 2016New Zealand M_S8.0 earthquake(M_W7.8 measured by USGS)was the strongest
文摘Ⅰ. SURVEY OF THE GLOBAL SEISMICITY A total of 28 earthquakes of M_s ≥7.0 occurred over the entire world in 1996 according to the determination by the Chinese Seismic Station Network. The strongest one is the Irian earthquake (M_s 7.9, February 17, 1996, Indonesia) (Fig. 1). It is considered that the global seismicity in 1996 is still situated in the active period based on the comprehensive analysis of its frequency, magnitude, and range.
文摘1. SURVEY OF SEISMICITY IN CHINA IN 1995 A total of 48 earthquakes with M_s≥5.0 occurred in China in 1995 (30 on the Chinese mainland and offshore, 1 in the South China Sea, and 17 in Taiwan) (Fig. 1). Among these, 8 earthquakes
文摘I. SURVEY OF GLOBAL SEISMICITY IN 1998 A total of 17 earthquakes with M_s≥7.0 occurred in the world in 1998 according to the determination by the Chinese Seismic Station Network. The strongest earthquake occurred in Sulawesi, Indonesia (M_s7.8, November 5, 1998). The next strongest earthquake was the South Pacific Ocean earthquake (M_s7.7, March 25, 1998) and the Ryukyu earthquake (M_s7.7, May 4) (Fig. 1).
文摘1. A SURVEY OF THE GLOBAL SEISMICITYAccording to the recording of the seismic network of China, 20 large earthquakes with Ms ≥7.0 occurred in 2000 (Table 1 ), the maximum magnitude of which is 7.8, they are: three Ms = 7.8 earthquakes on June 5 in the south of the Sumatra Island, Indonesia, on June 18 in India Ocean and on November 16 in Solomon Islands (Fig. 1).
文摘A total of 48 earthquakes with M_s ≥5.0 occurred in China in 1994 (29 on the Chinese mainland and offshore, 19 in Taiwan). Among them 9 earthquakes were of M_s ≥6.0 (4 on the mainland and offshore, 5 in Taiwan). The M_s 7.3 earthquake that occurred in Taiwan Straits on September 16 was the greatest one offshore, which was generally included in the mainland area according to the previous statistics. The most powerful earthquakes in Taiwan were the 2 with M_s =7.0 that occurred on
文摘Ⅰ. SURVEY OF GLOBAL SEISMICITY A total of 23 earthquakes with M_s ≥ 7.0 occurred over the world in 1997 according to the determination of the Chinese Seismic Station Network. The strongest one was the Kamchatka peninsula earthquake (M_s 7.9, December 5, 1997) (Fig. 1). Although the frequency and strength of global seismicity was lower compared with the higher activity state in 1995 and 1996, the frequency of seismicity was still obviously higher than the average level during this century.
文摘China is a country of high seismicity with many hydropower resources. Recently,a series of high arch dams have either been completed or are being constructed in seismic regions,of which most are concrete dams. The evaluation of seismic safety often becomes a critical problem in dam design. In this paper,a brief introduction to major progress in the research on seismic aspects of large concrete dams,conducted mainly at the Institute of Water Resources and Hydropower Research(IWHR) during the past 60 years,is presented. The dam site-specific ground motion input,improved response analysis,dynamic model test verification,field experiment investigations,dynamic behavior of dam concrete,and seismic monitoring and observation are described. Methods to prevent collapse of high concrete dams under maximum credible earthquakes are discussed.
