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加利福尼亚州1983年5月2日的破坏性地震发生在当地石油工人称为“背斜脊”下6英里的地方。地质学家们认为,“背斜脊”的很多特征是加利福尼亚州最令人费解的难题之一。据初步分析认为,此次地震没有把沿加州圣安德烈斯断层多年积累的应变释放出来,据推测它还会引起一次非常大的地震。但这并不是说该震预示着新的迫在眉睫的地震威胁。这次地震的震中位于圣华金山谷西边的一个油田,即圣安德烈斯断层东部25英里处。大多数加利福尼亚的地震被认为与太平洋板块和部分大陆边缘的北西向运动有关,所谓的太平洋板块与北美洲大陆相对应。这一运动的大部分(不是全部)是沿圣安德烈斯断层发
The destructive earthquake in California on May 2, 1983, occurred 6 miles below what the local oil workers called “anticlinal ridges.” Geologists believe that many of the features of the “anticline” are among the most puzzling problems in California. According to a preliminary analysis, the earthquake did not release the strain accumulated along the San Andreas Fault in California for many years and it is presumed that it will cause a very large earthquake. This does not mean, however, that the earthquake signals a new and imminent earthquake threat. The earthquake epicenter was located in an oil field west of the San Joaquin Valley, 25 miles east of the San Andreas Fault. Most of the earthquakes in California are thought to be related to the northwesterly movement of the Pacific plate and parts of the continental margin, and the so-called Pacific plate corresponds to the North American continent. Most, but not all, of this movement is along the San Andrés Fault