Fallout beryllium-7 as a tracer in soil erosion investigations

被引：113

作者：

Blake, WH ^{[1
]}

Walling, DE ^{[1
]}

He, Q ^{[1
]}

机构：

[1] Univ Exeter, Dept Geog, Exeter EX4 4RJ, Devon, England

来源：

APPLIED RADIATION AND ISOTOPES | 1999年 / 51卷 / 05期

基金：

英国自然环境研究理事会;

关键词：

soil erosion; beryllium-7; soil redistribution; sediment tracer; sediment delivery ratio;

D O I：

10.1016/S0969-8043(99)00086-X

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Recent developments in the use of the environmental radionuclides Cs-137 and Pb-210 for documenting medium-term soil erosion rates must be seen as an important advance. However, measurements of these radionuclides provide estimates of medium-term (i.e. ca. 45 or 100 years) soil redistribution rates and there is a need to explore the potential for using complementary radionuclides, to estimate erosion rates associated with individual events or short periods. Beryllium-7 (Be-7, t(0.5) = 53 days) has the potential to fulfil these requirements. This contribution presents some preliminary results from an investigation undertaken in a field near Crediton, UK, which successfully demonstrates the potential for using Be-7 as a tracer in soil erosion investigations. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：599 / 605

页数：7

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