| DOI: | 10.1002/2014GL062198
|
| 论文题名: | Imaging the D″ reflector with noise correlations |
| 作者: | Poli P.; Thomas C.; Campillo M.; Pedersen H.A.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-9082
|
| EISSN: | 1944-8813
|
| 出版年: | 2015
|
| 卷: | 42, 期:1 | | 起始页码: | 60
|
| 结束页码: | 65
|
| 语种: | 英语
|
| 英文关键词: | body waves
; core-mantle boundary
; seismic noise correlations
|
| Scopus关键词: | Minerals
; Reflection
; Seismology
; Structural geology
; Time of arrival
; Body waves
; Core-mantle boundary
; Earthquake stations
; Lowermost mantle
; Noise correlation
; Seismic noise
; Seismic observation
; Seismic structure
; Earthquakes
; amplitude
; core-mantle boundary
; correlation
; Earth structure
; mantle
; seismic data
; seismic noise
; seismic stratigraphy
; Siberia
|
| 英文摘要: | The lowermost mantle of the Earth is characterized by seismic structures that range from a few tens to thousands of kilometers. At present, it is difficult to test hypotheses put forward to explain seismic observations due to poor seismic coverage, as particular earthquake-station geometries are needed. We demonstrate here that seismic noise correlations can be used to robustly image deep-mantle reflections with larger stacked amplitudes of reflected waves compared with earthquake data. In a comparison between noise and earthquake data, we find that the arrival times and the slowness of reflected waves, both sampling a region beneath Siberia, agree with those for a reflector at 2530 km depth, and the small amplitude reflections are sufficiently clear in the noise correlations to compare them reliably with synthetic data. Our data open exciting prospects for illuminating new target zones in the deep mantle to further constrain the dynamics and mineralogy of the deep Earth. Key Points Imaging deep Earth without sources Agreement of the results with earthquake-based method High-resolution imaging of the core-mantle boundary region ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921830039&doi=10.1002%2f2014GL062198&partnerID=40&md5=e1af82259dc7d1e2478b428f81d899d3
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8698
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
|
| Recommended Citation: | |
Poli P.,Thomas C.,Campillo M.,et al. Imaging the D″ reflector with noise correlations[J]. Geophysical Research Letters,2015-01-01,42(1).
|
|
|