| DOI: | 10.1002/2014GL062714
|
| 论文题名: | Shallow mantle velocities beneath the southern Appalachians from Pn phases |
| 作者: | MacDougall J.G.; Fischer K.M.; Forsyth D.W.; Hawman R.B.; Wagner L.S.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-9041
|
| EISSN: | 1944-8772
|
| 出版年: | 2015
|
| 卷: | 42, 期:2 | | 起始页码: | 339
|
| 结束页码: | 345
|
| 语种: | 英语
|
| 英文关键词: | Pn phase
; shallow mantle velocity
; southeastern Appalachians
|
| Scopus关键词: | Earthquakes
; Landforms
; Seismic waves
; Appalachians
; Low velocities
; Mantle structure
; P-wave velocity
; Pn phase
; Regional earthquakes
; Southern Appalachian Mountains
; Southern appalachians
; Velocity
; buoyancy
; crust
; earthquake event
; mantle process
; mantle structure
; P-wave
; regional climate
; topography
; Appalachians
|
| 英文摘要: | To constrain mantle structure that might contribute to the topography of the southern Appalachian Mountains, Pn phases from regional earthquakes recorded in northern Georgia by EarthScope Southeastern Suture of the Appalachian Margin Experiment and Transportable Array stations were used to solve for shallow mantle P wave velocities. Mantle velocities vary laterally, with values of 7.6-7.8 km/s beneath the higher elevations of the Blue Ridge terrane and northwestern flank of the Inner Piedmont terranes and values of 8.3-8.5 km/s farther south where elevation is lower. The zone of low-velocity mantle could represent a source of buoyancy that helps to support the higher elevations, in addition to the root of thickened crust that also exists beneath the mountains. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923595630&doi=10.1002%2f2014GL062714&partnerID=40&md5=0a3d259fa3bfb2f054c3c2736df5b1ef
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8657
|
| 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 Environmental, and Planetary Sciences, Brown University, Providence, RI, United States
|
| Recommended Citation: | |
MacDougall J.G.,Fischer K.M.,Forsyth D.W.,et al. Shallow mantle velocities beneath the southern Appalachians from Pn phases[J]. Geophysical Research Letters,2015-01-01,42(2).
|
|
|