干旱区生态环境知识资源中心(Arid): Zebra stripes in the Atacama Desert revisited - Granular fingering as a mechanism for zebra stripe formation?

Arid

DOI	10.1016/j.geomorph.2019.07.014
	Zebra stripes in the Atacama Desert revisited - Granular fingering as a mechanism for zebra stripe formation?
	May, Simon Matthias 1; Hoffmeister, Dirk 1; Wolf, Dennis 1; Bubenzer, Olaf 2
通讯作者	May, Simon Matthias
来源期刊	GEOMORPHOLOGY
ISSN	0169-555X
EISSN	1872-695X
出版年	2019
卷号	344 页码:46-59
英文摘要	Although a number of studies have pointed out the remarkable slowness of Earth surface processes in the Atacama Desert, process mechanisms under such extremely limited water availability are poorly understood, and process rates remain unknown. This paper revisits the discussion on the formation of the prominent Atacama-specific hillslope zebra (stone) stripes, previously interpreted to result from palaeo-overland flow (Owen et al., 2013). Compared to this study, our data document different stripe characteristics with regard to stripe form and orientation as well as sorting- and bedding-patterns of stripe-confining surface gravel units. We found a remarkable form-concordance between zebra stripes and deposits from experiments on segregation-induced granular fingering. Hence, we propose a combination of seismic shaking and instantaneous dry granular free surface flows as the key mechanism for zebra stripe formation. Our findings underline the potential significance of seismicity in shaping Atacama landscapes, which bear important analogies to extraterrestrial surfaces. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Zebra stripes Atacama Desert Granular fingering Seismic shaking
类型	Article
语种	英语
国家	Germany
收录类别	SCI-E
WOS记录号	WOS:000487572000004
WOS关键词	NORTHERN CHILE ; HYPERARID-ATACAMA ; LANDSCAPE EVOLUTION ; BANDED VEGETATION ; MOJAVE-DESERT ; RECORD ; SOIL ; DEPOSITS ; ARIDITY ; ORIGIN
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310620
作者单位	1.Univ Cologne, Inst Geog, D-50923 Cologne, Germany; 2.Heidelberg Univ, Heidelberg Ctr Environm, Inst Geog, D-69120 Heidelberg, Germany
推荐引用方式 GB/T 7714	May, Simon Matthias,Hoffmeister, Dirk,Wolf, Dennis,et al. Zebra stripes in the Atacama Desert revisited - Granular fingering as a mechanism for zebra stripe formation?[J],2019,344:46-59.
APA	May, Simon Matthias,Hoffmeister, Dirk,Wolf, Dennis,&Bubenzer, Olaf.(2019).Zebra stripes in the Atacama Desert revisited - Granular fingering as a mechanism for zebra stripe formation?.GEOMORPHOLOGY,344,46-59.
MLA	May, Simon Matthias,et al."Zebra stripes in the Atacama Desert revisited - Granular fingering as a mechanism for zebra stripe formation?".GEOMORPHOLOGY 344(2019):46-59.