气候变化领域集成服务门户(CCPortal): Accommodation of East African Rifting Across the Turkana Depression

CCPortal

DOI	10.1029/2019JB018469
	Accommodation of East African Rifting Across the Turkana Depression
	Knappe E.; Bendick R.; Ebinger C.; Birhanu Y.; Lewi E.; Floyd M.; King R.; Kianji G.; Mariita N.; Temtime T.; Waktola B.; Deresse B.; Musila M.; Kanoti J.; Perry M.
发表日期	2020
ISSN	21699313
卷号	125 期号:2
英文摘要	Geodetic observations in the Turkana Depression of southern Ethiopia and northern Kenya constrain the kinematic relay of extension from a single rift in Ethiopia to parallel rifts in Kenya and Uganda. Global Position System stations in the region record approximately 4.7 mm/year of total eastward extension, consistent with the ITRF14 Euler pole for Nubia-Somalia angular velocity. Extension is partitioned into high strain rates on localized structures and lower strain rates in areas of elevated topography, as across the Ethiopian Plateau. Where high topography is absent, extension is relayed between the Main Ethiopian Rift and the Eastern Rift across the Turkana Depression exclusively through localized extension on and immediately east of Lake Turkana (up to 0.2 microstrain/year across Lake Turkana). The observed scaling and location of active extension in the Turkana Depression are inconsistent with mechanical models predicting distributed stretching due to either inherited lithospheric weakness or reactivated structures oblique to the present-day extension direction. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	continental rifting; East Africa; GPS; kinematics; Turkana Depression
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187964
作者单位	Department of Geosciences, University of Montana, Missoula, MT, United States; Earth and Environmental Sciences, Tulane University of Louisiana, New Orleans, LA, United States; Institute of Geophysics, Space Science and Astronomy, Addis Ababa University, Addis Ababa, Ethiopia; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Geology, University of Nairobi, Nairobi, Kenya; Geothermal Energy Training and Research Institute, Dedan Kimathi University of Technology, Nyeri, Kenya; School of Earth Sciences, University of Bristol, Bristol, United Kingdom
推荐引用方式 GB/T 7714	Knappe E.,Bendick R.,Ebinger C.,et al. Accommodation of East African Rifting Across the Turkana Depression[J],2020,125(2).
APA	Knappe E..,Bendick R..,Ebinger C..,Birhanu Y..,Lewi E..,...&Perry M..(2020).Accommodation of East African Rifting Across the Turkana Depression.Journal of Geophysical Research: Solid Earth,125(2).
MLA	Knappe E.,et al."Accommodation of East African Rifting Across the Turkana Depression".Journal of Geophysical Research: Solid Earth 125.2(2020).