Arid
DOI10.1016/j.catena.2011.07.011
Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA
Hirmas, Daniel R.1; Graham, Robert C.2; Kendrick, Katherine J.3
通讯作者Hirmas, Daniel R.
来源期刊CATENA
ISSN0341-8162
出版年2011
卷号87期号:3页码:408-420
英文摘要

Mountains comprise an extensive and visually prominent portion of the landscape in the Mojave Desert, California. Landform surface properties influence the role these mountains have in geomorphic processes such as dust flux and surface hydrology across the region. The primary goal of this study was to describe and quantify land surface properties of arid-mountain landforms as a step toward unraveling the role these properties have in soil-geomorphic processes. As part of a larger soil-geomorphic study, four major landform types were identified within the southern Fry Mountains in the southwestern Mojave Desert on the basis of topography and landscape position: mountaintop, mountainflank, mountainflat (intra-range low-relief surface), and mountainbase. A suite of rock, vegetation, and morphometric land surface characteristic variables was measured at each of 65 locations across the study area, which included an associated piedmont and playa. Our findings show that despite the variation within types, landforms have distinct land surface properties that likely control soil-geomorphic processes. We hypothesize that surface expression influences a feedback process at this site where water transports sediment to low lying areas on the landscape and wind carries dust and soluble salts to the mountains where they are washed between rocks, incorporated into the soil, and retained as relatively long-term storage. Recent land-based video and satellite photographs of the dust cloud emanating from the Sierra Cucapa Mountains in response to the 7.2-magnitude earthquake near Mexicali, Mexico, support the hypothesis that these landforms are massive repositories of dust. (C) 2011 Elsevier B.V. All rights reserved.


英文关键词Desert geomorphology Eolian processes Fry Mountains Discriminant analysis
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000295769100014
WOS关键词SOUTHWESTERN UNITED-STATES ; CIMA VOLCANIC FIELD ; ROCK FRAGMENTS ; ROUGHNESS MEASUREMENT ; SOUTHERN NEVADA ; CLIMATE-CHANGE ; WALNUT-GULCH ; CALIFORNIA ; DUST ; HILLSLOPES
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向Geology ; Agriculture ; Water Resources
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/167543
作者单位1.Univ Kansas, Dept Geog, Lawrence, KS 66045 USA;
2.Univ Calif Riverside, Soil & Water Sci Program, Dept Environm Sci, Riverside, CA 92521 USA;
3.US Geol Survey, Pasadena, CA 91106 USA
推荐引用方式
GB/T 7714
Hirmas, Daniel R.,Graham, Robert C.,Kendrick, Katherine J.. Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA[J]. United States Geological Survey,2011,87(3):408-420.
APA Hirmas, Daniel R.,Graham, Robert C.,&Kendrick, Katherine J..(2011).Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA.CATENA,87(3),408-420.
MLA Hirmas, Daniel R.,et al."Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA".CATENA 87.3(2011):408-420.
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