globalchange  > 气候减缓与适应
DOI: 10.1002/esp.4483
WOS记录号: WOS:000456214900009
论文题名:
Topographic variation in soil erosion and accumulation determined with meteoric Be-10
作者: Marquard, Julia1; Aalto, Rolf E.1; Barrows, Timothy T.2,3; Fisher, Beth A.4; Aufdenkampe, Anthony K.5,6; Stone, John O.7
通讯作者: Marquard, Julia
刊名: EARTH SURFACE PROCESSES AND LANDFORMS
ISSN: 0197-9337
EISSN: 1096-9837
出版年: 2019
卷: 44, 期:1, 页码:98-111
语种: 英语
英文关键词: meteoric Be-10 ; geomorphology ; natural soil processes ; soil erosion ; sediment accumulation
WOS关键词: HALF-LIFE ; SEDIMENT ; INVENTORIES ; PB-210 ; CS-137 ; RATES ; PENNSYLVANIA ; TRANSPORT ; RECORD ; TIME
WOS学科分类: Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向: Physical Geography ; Geology
英文摘要:

Understanding natural soil redistribution processes is essential for measuring the anthropogenic impact on landscapes. Although meteoric beryllium-10 (Be-10) has been used to determine erosion processes within the Pleistocene and Holocene, fewer studies have used the isotope to investigate the transport and accumulation of the resulting sediment. Here we use meteoric Be-10 in hilltop and valley site soil profiles to determine sediment erosion and deposition processes in the Christina River Basin (Pennsylvania, USA). The data indicate natural erosion rates of 14 to 21 mm 10(-3) yr and soil ages of 26 000 to 57 000 years in hilltop sites. Furthermore, valley sites indicate an alteration in sediment supply due to climate change (from the Pleistocene to the Holocene) within the last 60 000 years and sediment deposition of at least 0.5-2 m during the Wisconsinan glaciation. The change in soil erosion rate was most likely induced by changes in geomorphic processes; probably solifluction and slope wash during the cold period, when ice advanced into the mid latitudes of North America. This study shows the value of using meteoric Be-10 to determine sediment accumulation within the Quaternary and quantifies major soil redistribution occurred under natural conditions in this region. (c) 2018 John Wiley & Sons, Ltd.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/127082
Appears in Collections:气候减缓与适应

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作者单位: 1.Univ Exeter, Dept Geog, Exeter, Devon, England
2.Univ Wollongong, Sch Earth & Environm Sci, Wollongong, NSW, Australia
3.Univ Portsmouth, Dept Geog, Portsmouth, Hants, England
4.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA
5.Stroud Water Res Ctr, Avondale, PA USA
6.LimnoTech, Oakdale, MN USA
7.Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA

Recommended Citation:
Marquard, Julia,Aalto, Rolf E.,Barrows, Timothy T.,et al. Topographic variation in soil erosion and accumulation determined with meteoric Be-10[J]. EARTH SURFACE PROCESSES AND LANDFORMS,2019-01-01,44(1):98-111
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