地质构造“拉链”-凯发k8官网

地质构造“拉链”
文章来源:未知 文章作者:meng 发布时间:2010-09-10 02:43 字体: [ ] 
(单词翻译:双击或拖选)

the complex fracture pattern created by the earthquake in concepción (chile) on 27 february 2010 was to a certain extent predictable(可预言的) . gps observations from the years before the earthquake showed the pattern of stresses that had accumulated(累积的) through the plate movements during the past 175 years in this area. the stress distribution 1 from the observations correlates(关联) highly with the subsequent fracture distribution. in all likelihood the 2 removed all the stress that had accumulated since the last earthquake in this region, which was observed by charles darwin in 1835. an earthquake of similar magnitude in this area is therefore unlikely in the near future. this result was presented by scientists of the gfz german centre for geosciences (helmholtz association) in the latest edition of the scientific journal nature (09 september 2010). "the maule earthquake near concepción, chile, on the 27 februar registered with a 3(势头,动量) magnitude of 8.8, makes it one of the largest earthquakes to have been recorded in its entirety via a modern network of space-geodetic and geophysical instruments on the ground," says professor onno oncken, head of the department "geodynamics" at gfz. "it thus offers a unique opportunity to compare 4 observations prior to the earthquake with those taken during and after it, and to re-evaluate hypotheses regarding the predictability of such events."

measurements using the satellite navigation system gps showed that the seafloor of the nazca plate in the pacific ocean does not slide evenly under the western boundary of the south american continent. rather, it appears from the gps measurements that some parts of the ocean floor got locked with the subsurface(地下的) of the continent. in the gaps, however, the nazca plate continued to push under south america. the resulting 5 stress pattern was released by the earthquake of the 27 february in such a way that, just like a 6, the locked patches were 7(破裂的) one after the other. as a result, this 8 gap(地震空白区) off the chilean westcoast is now closed, one last gap 9 in northern chile. here, the gfz scientists set up a plate boundary 10, in order to make use of the entire range of geoscientific instruments to record the conditions before, during and after an earthquake- an important step in understanding the processes of plate tectonics(地质构造学) .

modern earth science may still not be able to predict the location, time and magnitude of an earthquake. but the present study offers an optimistic perspective concerning the predictability of possible fracture patterns and magnitudes of expected earthquakes.



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1 6cddb7353e699051a384686b6b3ff1e2     
vi.起源;由来;衍生;导出v.得到( derive的过去式和过去分词 );(从…中)得到获得;源于;(从…中)提取
参考例句:
  • many english words are derived from latin and greek. 英语很多词源出于拉丁文和希腊文。 来自《简明英汉词典》
  • he derived his enthusiasm for literature from his father. 他对文学的爱好是受他父亲的影响。 来自《简明英汉词典》
2 tghy5     
n.震动,颤动,战栗,兴奋,地震
参考例句:
  • there was a slight tremor in his voice.他的声音有点颤抖。
  • a slight earth tremor was felt in california.加利福尼亚发生了轻微的地震。
3 djzy8     
n.动力,冲力,势头;动量
参考例句:
  • we exploit the energy and momentum conservation laws in this way.我们就是这样利用能量和动量守恒定律的。
  • the law of momentum conservation could supplant newton's third law.动量守恒定律可以取代牛顿第三定律。
4 xunzms     
adj.详细的,详尽的,极注意细节的,完全的
参考例句:
  • he had made a detailed study of the terrain.他对地形作了缜密的研究。
  • a detailed list of our publications is available on request.我们的出版物有一份详细的目录备索。
5 akwwb     
adj.不平坦的,不规则的,不均匀的
参考例句:
  • the sidewalk is very uneven—be careful where you walk.这人行道凹凸不平—走路时请小心。
  • the country was noted for its uneven distribution of land resources.这个国家以土地资源分布不均匀出名。
6 fevzvm     
n.拉链;v.拉上拉链
参考例句:
  • the zipper is red.这条拉链是红色的。
  • the zipper is a wonderful invention.拉链是个了不起的发明。
7 077b042156149d8d522b697413b3801c     
v.(使)破裂( rupture的过去式和过去分词 );(使体内组织等)断裂;使(友好关系)破裂;使绝交
参考例句:
  • they reported that the pipeline had ruptured. 他们报告说管道已经破裂了。 来自《简明英汉词典》
  • the wall through berlin was finally ruptured, prefiguring the reunification of germany. 柏林墙终于倒塌了,预示着德国的重新统一。 来自辞典例句
8 sskym     
a.地震的,地震强度的
参考例句:
  • earthquakes produce two types of seismic waves.地震产生两种地震波。
  • the latest seismic activity was also felt in northern kenya.肯尼亚北部也感觉到了最近的地震活动。
9 1kmzty     
n.剩余物,残留物;遗体,遗迹
参考例句:
  • he ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • the remains of the meal were fed to the dog.残羹剩饭喂狗了。
10 hrgzp     
n.天文台,气象台,瞭望台,观测台
参考例句:
  • guy's house was close to the observatory.盖伊的房子离天文台很近。
  • officials from greenwich observatory have the clock checked twice a day.格林威治天文台的职员们每天对大钟检查两次。
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tag标签: region stress earthquake
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