Rupture process of the Wenchuan M8.0 earthquake of Sichuan, China: the segmentation feature

• 来源期刊: 科学通报(英文版)
• 学科: 地球科学
• 关键词: 破裂过程 大地震 汶川 分割 走滑断层 地表破裂带 四川 中国
• 年，卷（期）: 2010,（3）
• 所属期刊栏目: ARTICLES
• 页码范围: 284-292
• 页数: 9页
• 分类号: P315.3 P315.9
• 语种: 英文

摘要

Moment tensor solution, rupture process and rupture characteristics of the great Wenchuan M8.0 earthquake are studied by using 39 long-period P and SH waveforms with evenly azimuth coverage of stations. Our results reveal that the Wenchuan M8.0 event consisted of 5 sub-events of Mw≥7.3 occurring succesively in time and space. Rupture started with a Mw7.3 introductory strike-slip faulting in the first 12 s, then within 12?40 s, two sub-events with Mw7.6 and Mw7.4 occurred within 80 km northeast from the init...