干旱区生态环境知识资源中心(Arid): Antecedent controls on the spatial organization of yardangs on the Puna Plateau, north-western Argentina

Arid

DOI	10.1002/esp.5212
	Antecedent controls on the spatial organization of yardangs on the Puna Plateau, north-western Argentina
	Favaro, Elena A.; Hugenholtz, Chris H.; Barchyn, Thomas E.
通讯作者	Favaro, EA (corresponding author), Open Univ, Sch Phys Sci, Walton Hall, Milton Keynes MK7 6AA, Bucks, England.
来源期刊	EARTH SURFACE PROCESSES AND LANDFORMS
ISSN	0197-9337
EISSN	1096-9837
出版年	2021
英文摘要	Yardangs are streamlined ridges that form in arid environments on Earth and Mars through wind-driven abrasion of consolidated substrates. Currently, there is limited consensus on the mechanisms that initiate and establish patterns of yardangs on the landscape. In this work, we examine the spatial organization of yardangs in the Campo de Piedra Pomez ignimbrite deposit of north-western Argentina and identify evidence of antecedent controls on yardang patterns and formation. We mapped 14,826 yardangs in the region using a high-resolution digital elevation model (DEM) and satellite imagery. We classified yardangs as points using a two-stage decision rule based on morphology and spectral characteristics. Point pattern analysis shows that yardangs in the study area are not randomly distributed and commonly exhibit directional anisotropy in point pattern. The anisotropic pattern manifests as bands of closely-spaced yardangs oriented transverse to the dominant northwesterly wind direction. We hypothesize that banding is controlled by pre-existing antecedent topography in the bedrock, such as fumaroles or ridges associated with pyroclastic flow deposits. We present evidence from other locations on Earth and Mars to illustrate that the transverse banding is a common pattern in yardang landscapes.
英文关键词	aeolian Argentina Mars point pattern analysis yardangs
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000703775000001
WOS关键词	GRAVEL-MANTLED MEGARIPPLES ; POINT PATTERN-ANALYSIS ; QAIDAM BASIN ; AEOLIAN BEDFORMS ; SAND DUNES ; MARS ; EVOLUTION ; WIND ; EARTH ; SURFACES
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362964
作者单位	[Favaro, Elena A.] Open Univ, Sch Phys Sci, Walton Hall, Milton Keynes MK7 6AA, Bucks, England; [Hugenholtz, Chris H.; Barchyn, Thomas E.] Univ Calgary, Dept Geog, Calgary, AB, Canada
推荐引用方式 GB/T 7714	Favaro, Elena A.,Hugenholtz, Chris H.,Barchyn, Thomas E.. Antecedent controls on the spatial organization of yardangs on the Puna Plateau, north-western Argentina[J],2021.
APA	Favaro, Elena A.,Hugenholtz, Chris H.,&Barchyn, Thomas E..(2021).Antecedent controls on the spatial organization of yardangs on the Puna Plateau, north-western Argentina.EARTH SURFACE PROCESSES AND LANDFORMS.
MLA	Favaro, Elena A.,et al."Antecedent controls on the spatial organization of yardangs on the Puna Plateau, north-western Argentina".EARTH SURFACE PROCESSES AND LANDFORMS (2021).