China Geological Survey Bureau held Wenchuan induced by the earthquake and its secondary analysis of geological disasters, China's land resources aerogeophysical Centre for Remote Sensing, China Geological Environmental Monitoring Institute, Chinese Academy of Geological Sciences, Chinese Academy of Geological Sciences by the geological, geomechanics, and other units by the experts based on Monitoring and evaluation of survey findings on the disaster "consultations" on the initial formation of three conclusions.
First, the Indian plate dives to the Asian plate, causing uplift of the Qinghai-Tibet Plateau fast. The plateau towards the slow movement of material, on the plateau along the eastern edge Longmenshan structural zone east crushed under the Sichuan Basin encountered rigid block the tenacious blocking, causing structural stress the long-term accumulation of energy, eventually in the North-Longmenshan - Ying Discovered in a sudden release.
Second, the thrust, D, squeeze-fault earthquake. Longmenshan tectonic earthquake is tectonic fault zone with the central, role in squeezing the stress, by Nancy East thrust northward movement; this earthquake is a one-way breakdown of the earthquake, by Nancy East migration northward, resulting in the north east aftershocks To the expansion; squeeze-thrust earthquake in the main shock, stress and the spread of the release process has been slow, the aftershocks could lead to GREater intensity, longer duration.
Third, it is shallow earthquake. Wenchuan deep earthquake does not belong to the effects of plate boundaries, in the brittle crust - toughness conversion zone, focal depth of 10 kilometers - 20 kilometers, so enormous destructive.
First, the Indian plate dives to the Asian plate, causing uplift of the Qinghai-Tibet Plateau fast. The plateau towards the slow movement of material, on the plateau along the eastern edge Longmenshan structural zone east crushed under the Sichuan Basin encountered rigid block the tenacious blocking, causing structural stress the long-term accumulation of energy, eventually in the North-Longmenshan - Ying Discovered in a sudden release.
Second, the thrust, D, squeeze-fault earthquake. Longmenshan tectonic earthquake is tectonic fault zone with the central, role in squeezing the stress, by Nancy East thrust northward movement; this earthquake is a one-way breakdown of the earthquake, by Nancy East migration northward, resulting in the north east aftershocks To the expansion; squeeze-thrust earthquake in the main shock, stress and the spread of the release process has been slow, the aftershocks could lead to GREater intensity, longer duration.
Third, it is shallow earthquake. Wenchuan deep earthquake does not belong to the effects of plate boundaries, in the brittle crust - toughness conversion zone, focal depth of 10 kilometers - 20 kilometers, so enormous destructive.
中国地质调查局召开汶川地震及其诱发的次生地质灾害情况分析会，中国国土资源航空物探遥感中心、中国地质环境监测院、中国地质科学院，中国地质科学院地质所、地质力学所等单位专家根据调查监测和评价研究结果，对灾情进行“会诊”初步形成三个结论。
一是印度板块向亚洲板块俯冲，造成青藏高原快速隆升。高原物质向东缓慢流动，在高原东缘沿龙门山构造带向东挤压，遇到四川盆地之下刚性地块的顽强阻挡，造成构造应力能量的长期积累，最终在龙门山北川——映秀地区突然释放。
二是逆冲、右旋、挤压型断层地震。发震构造是龙门山构造带中央断裂带，在挤压应力作用下，由南西向北东逆冲运动；这次地震属于单向破裂地震，由南西向北东迁移，致使余震向北东方向扩张；挤压型逆冲断层地震在主震之后，应力传播和释放过程比较缓慢，可能导致余震强度较大，持续时间较长。
三是浅源地震。汶川地震不属于深板块边界的效应，发生在地壳脆——韧性转换带，震源深度为10千米——20千米，因此破坏性巨大。
还行！~~~
