| 南北构造带岩石圈结构与地震的研究 |
| |
| 引用本文： | 王椿镛,杨文采,吴建平,丁志峰.南北构造带岩石圈结构与地震的研究[J].地球物理学报,2015,58(11):3867-3901. |
| |
| 作者姓名： | 王椿镛 杨文采 吴建平 丁志峰 |
| |
| 作者单位： | 1. "地震观测与地球物理成像"重点实验室, 中国地震局地球物理研究所, 北京 100081;
2. "大地构造与动力学"国家重点实验室, 中国地质科学院地质研究所, 北京 100037 |
| |
| 基金项目： | 国家自然科学基金委员会-中国科学院学科发展战略研究合作项目2013-1,地震行业专项(201308011)和国家自然科学基金(41174070,41474073和41474088)资助. |
| |
| 摘 要： | 南北构造带是中国大陆东西部大地构造的主要分界,也是大陆内部强烈地震发生的主要地区之一.2008年汶川MS8.0地震发生后,在南北构造带及周边地区进行了大量的野外科学考察、深部地球物理探测和流动地震观测,在岩石圈结构与构造、强震发生的深部构造环境和动力学过程等方面获得了重要的进展.本文综述近年来发表的一批研究成果,包括岩石圈结构的深部地球物理探测和成像,地震层析成像,地震各向异性和壳幔变形,与近期发生的强烈地震相关研究,以及与大陆动力学有关的研究等.自2000年以来,我国建成了具有1000多个地震台站的国家和区域地震台网.它们在实时为地震监测服务的同时,其产出的海量数据还提供用于地球科学研究.一批作者在国内外发表了研究成果,大大提高了对南北构造带的认识.我们虽然取得许多共识性的重要成果,但是也存在一些问题,发现不同作者的结论是相互矛盾的.其原因之一可能是,现有台网的数据成像分辨率和精度仍不足以识别在地壳深处的细节,例如在孕震尺度概念下的地震危险区.加强流动地震观测,提高台站分布的密度,取得高可信度的目标模型是解决问题的重要方面.近年来"中国地震科学台阵观测"计划在南北构造带上实施的大型流动台阵观测,结合固定地震台网的资料,加上高分辨率深部地球物理探测,以获得高可信度的地壳上地幔三维精细结构及物性成像,是提高地震科学和大陆动力学研究水平的一个有效途径.
|
| 关 键 词： | 南北地震带 岩石圈结构 地震各向异性 地震台阵 大陆动力学 |
| 收稿时间： | 2015-11-13 |
Study on the lithospheric structure and earthquakes in North-South Tectonic Belt |
| |
| WANG Chun-Yong,YANG Wen-Cai,WU Jian-Ping,DING Zhi-Feng.Study on the lithospheric structure and earthquakes in North-South Tectonic Belt[J].Chinese Journal of Geophysics,2015,58(11):3867-3901. |
| |
| Authors: | WANG Chun-Yong YANG Wen-Cai WU Jian-Ping DING Zhi-Feng |
| |
| Institution: | 1. Key Lab of Seismic Observation and Geophysical Imagin, Institute of Geophysics, Beijing 100081, China;
2. State Key Lab of Continental Tectonics and Dynamics, Institute of Geology, CAGS, Beijing 100037, China |
| |
| Abstract: | The North-South tectonic belt is the main boundary between the east and west parts of Chinese continent, and is also one of the major regions of strong earthquakes in the continental interior. After the 2008 Wenchuan MS8.0 earthquake, a large number of projects (such as the field investigation, deep geophysical exploration and mobile seismic observation) were carried out in the North-South tectonic belt and the surrounding areas. The results of lithospheric structure and tectonics, and the deep tectonic environment and dynamic process of strong earthquakes were obtained. This paper reviews a number of research articles published in recent years. The special symposium includes the deep geophysical exploration and imaging of the lithosphere structure, seismic tomography, seismic anisotropy and crust-mantle deformation, reseaches on recently occurrened strong earthquakes and the continental dynamics. Since 2000, China has built the national and regional seismic networks containning more than 1000 seismic stations, which serve the seismic monitoring in real time, and provide mass seismic data for the earth sciences. A number of authors have published their results at home and abroad, which greatly improved the understanding of the North-South tectonic belt. However, although many important achievements in common sense have been made, there are also some issues, which are contradictory. One of the reasons may be that the resolution and accuracy of existing network data imaging is still not enough to recognition the details in deep crust, such as the earthquake risk region with the concept of seismogenic scale. An important aspect is to strengthen the temporary seismic observation, improve the distribution of the station, and obtain the high reliability of the target model. In recent years, the large-scale temporary seismic array observation, which is implemented in the North-South tectonic belt made by the project "China's Seismic Array Observation", combined with the data from permanent seismic networks and high-resolution deep geophysical exploration, is an effective way to raise the research level on the earthquke sciences and the continental dynamics. |
| |
| Keywords: | North-South seismic belt Lithospheric structure Seismic anisotropy Seismic array Continental dynamics |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
