How to compare 4. 14 Yushu and 5. 12 Wenchuan earthquake?

Yushu Earthquake Wenchuan Earthquake Time 201April14th 07: 49. May 2008, 12, 14: 28. Location: Yushu County, Yushu Tibetan Autonomous Prefecture, Qinghai Province (33.2 N, 96.6 E). Yingxiu Town, Wenchuan County, Sichuan Province (30.986 N, 0/03.364 E). Focal depth 14km, aftershock 14km. As of April 20 14 and 15: 36, aftershocks 18, 15 and 1 6.3 have occurred in Yushu earthquake area. The number of aftershocks is still increasing. As of May 20th, 2008, 1 1, Wenchuan M8.0 earthquake had more than 7000 aftershocks. Among them, there were more than 4 aftershocks 159, including 26 aftershocks of more than 5 and 4 aftershocks of more than 6, and they continued to increase. The strength contrast is about 7. 1, and it is preliminarily estimated that the rupture length is about 30 kilometers, the magnitude is 8.0, and the rupture length is about 300 kilometers. On a relatively vertical fault, the damage time is not long, just like two cars colliding, mainly thrust, while the fault plane is like a slope, and the damage degree is long and wide, just like two cars colliding and tearing a serious plot, and the distance between the two plots has not changed. It was the left-right translation that shortened the distance between the two plots and forced them out, probably pushing the Qinghai-Tibet Plateau several meters. The fault movement speed and energy accumulation in Yushu area are slower than those in Wenchuan, which has not attracted enough attention before. Wenchuan earthquake was once located on the Ganzi-Yushu-Fenghuoshan fault zone, which belonged to the southern boundary of Bayankala block for thousands or tens of thousands of years. Located on the North-South seismic belt, a major seismic belt in China, it is the Longmenshan fault zone, which is the boundary between Sichuan Basin and Qinghai-Tibet Plateau, and belongs to the southeast boundary of Bayankala block. Foreshock phenomenon is foreshock. Like the Tangshan earthquake, Yushu County, Yushu Tibetan Autonomous Prefecture, Qinghai Province, has no foreshock-affected area, which is called Sichuan Duoxian and Ganzi Prefecture. Sichuan Chengdu, Dujiangyan, Mianyang, Deyang, Guangyuan, Aba Prefecture, Beichuan, Mianzhu, Qingchuan County and Wenchuan County are all major disaster-stricken areas. Earthquakes occurred in Tianshui and Longnan, Gansu. The Yushu earthquake in Qinghai affected parts of Sichuan, especially Shiqu and White in Ganzi Prefecture, Sichuan. Except Sichuan, there were casualties in Shaanxi, Henan, Hubei, Chongqing and other four provinces and cities, and the earthquake was felt in most parts of China. Yushu, located in the earthquake zone, is a high-altitude area with mountainous terrain, with an average elevation of 4493 meters. Tongtianhe, Zhaqu and Baqu flow through here. Wenchuan area, the largest geographical fold area in the world, is located in the western edge of Sichuan Basin, with low in the south and high in the north, and along the Minjiang River Valley, showing a northeast-southwest trend. The relative height difference between valleys and mountains is wide and the terrain is complex, which is a typical alpine canyon terrain. Climate in the earthquake zone It is predicted that there will be no precipitation in the Yushu earthquake zone in the next two days, and the weather situation is generally conducive to earthquake relief. 201April 14, Yushu county, Yushu prefecture, Qinghai province was dominated by cloudy weather, with the lowest temperature of-1.5℃. At present, there are 6 or 7 strong winds in the disaster area, which makes it difficult to rescue. After the Wenchuan earthquake, there was widespread rainfall and flash floods in the disaster area, which made rescue extremely difficult. For example, on May 14, 2008, there was a general rainstorm in Mianzhu County, and Qingping Township, Tianchi Township and Jinhua Town near Longmen Mountain were in danger of flash floods at any time. 1 earthquake disaster relief response building Most buildings in Yushu disaster area are civil structures, and almost all buildings in Yushu county collapsed after the strong earthquake. Most buildings in Wenchuan disaster area are masonry structures. The earthquake caused seven schools, including two kindergartens, to collapse in Mianzhu, Sichuan, and 1700 people were buried. A large number of schools collapsed in other disaster areas. Yushu, a high-altitude area in the earthquake zone, is short of medical facilities, 800 kilometers away from the provincial capital, and the transportation is inconvenient, which will become a great difficulty for rescue. After the Wenchuan earthquake, most of the traffic in the disaster area was interrupted. Due to the heavy rain, landslides are everywhere. As of the afternoon of 20 10 and 14, the mobile and fixed telephone communication in Yushu earthquake area has been basically interrupted. Traffic and communication in the disaster area were completely interrupted, and communication in Chengdu, the provincial capital, was basically interrupted. After the earthquake, people couldn't get through by cell phone.