Topography of the 660-km discontinuity beneath northeast China: Implications for a retrograde motion of the subducting Pacific slab
文献类型：期刊论文
| 作者 | Li, Juan1,2; Chen, Qi-Fu3; Vanacore, Elizabeth2; Niu, Fenglin2 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2008-01-08 |
| 卷号 | 35期号:1 |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2007GL031658 |
| 文献子类 | Article |
| 英文摘要 | Clear S to P converted waves at the 660-km discontinuity (S660P) are observed at stacked seismograms of deep earthquakes occurring in northeast China and Japan Sea recorded by broadband seismic arrays in North America and Europe. Differential travel times between the S660P and P waves are used to constrain depth variations of the 660 beneath northeast China. A rapid change in the depth of the 660 is observed within a narrow longitudinal range of 130.8 degrees E - 131.4 degrees E, where the lower boundary of the subducting slab encounters the 660. Towards the west, the 660 deepens steadily as it approaches the coldest core of the slab. The maximum depression occurs at the west end of the studied region with an amplitude of similar to 20 km. To the east, the 660 appears to be flat, showing no obvious effect of the subducting slab. These observations are consistent with a scenario for a retrograde moving Pacific slab lying over the upper and lower mantle boundary progressively from west to east. |
| WOS关键词 | PRESSURE-TEMPERATURE SLOPES ; TRANSITION ZONE ; SEISMIC DISCONTINUITIES ; MGSIO3 PEROVSKITE ; LOWER MANTLE ; DEEP MANTLE ; TOMOGRAPHY ; MIGRATION ; MG2SIO4 ; MODEL |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000252361700001 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68682]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li, Juan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithosphere Evolut, Beijing, Peoples R China 2.Rice Univ, Dept Earth Sci, Houston, TX 77251 USA 3.China Earthquake Adm, Inst Earthquake Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Juan,Chen, Qi-Fu,Vanacore, Elizabeth,et al. Topography of the 660-km discontinuity beneath northeast China: Implications for a retrograde motion of the subducting Pacific slab[J]. GEOPHYSICAL RESEARCH LETTERS,2008,35(1). |
| APA | Li, Juan,Chen, Qi-Fu,Vanacore, Elizabeth,&Niu, Fenglin.(2008).Topography of the 660-km discontinuity beneath northeast China: Implications for a retrograde motion of the subducting Pacific slab.GEOPHYSICAL RESEARCH LETTERS,35(1). |
| MLA | Li, Juan,et al."Topography of the 660-km discontinuity beneath northeast China: Implications for a retrograde motion of the subducting Pacific slab".GEOPHYSICAL RESEARCH LETTERS 35.1(2008). |
入库方式： OAI收割
来源：地质与地球物理研究所
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