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DOI10.1002/esp.4483
Topographic variation in soil erosion and accumulation determined with meteoric Be-10
Marquard, Julia1; Aalto, Rolf E.1; Barrows, Timothy T.2,3; Fisher, Beth A.4; Aufdenkampe, Anthony K.5,6; Stone, John O.7
发表日期2019
ISSN0197-9337
EISSN1096-9837
卷号44期号:1页码:98-111
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.


WOS研究方向Physical Geography ; Geology
来源期刊EARTH SURFACE PROCESSES AND LANDFORMS
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/91464
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
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GB/T 7714
Marquard, Julia,Aalto, Rolf E.,Barrows, Timothy T.,et al. Topographic variation in soil erosion and accumulation determined with meteoric Be-10[J],2019,44(1):98-111.
APA Marquard, Julia,Aalto, Rolf E.,Barrows, Timothy T.,Fisher, Beth A.,Aufdenkampe, Anthony K.,&Stone, John O..(2019).Topographic variation in soil erosion and accumulation determined with meteoric Be-10.EARTH SURFACE PROCESSES AND LANDFORMS,44(1),98-111.
MLA Marquard, Julia,et al."Topographic variation in soil erosion and accumulation determined with meteoric Be-10".EARTH SURFACE PROCESSES AND LANDFORMS 44.1(2019):98-111.
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