Using cesium-137 to quantify sediment source contribution and uncertainty in a small watershed
详细信息 查看全文
- 作者：X.C. (John) Zhangb ; 1 ; john.zhang@ars.usda.gov" class="auth_mail" title="E-mail the corresponding author ; G.H. Zhanga ; 2 ; B.L. Liuc ; 3 ; B. Liud ; 4
- 关键词：CI ; confidence interval ; CV ; coefficient of variance ; MC ; Monte Carlo ; RE ; relative error ; SDR ; sediment delivery ratio ; SE ; standard error
- 刊名：Catena
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：140
- 期：Complete
- 页码：116-124
- 全文大小：1004 K
文摘
- •
Overland source and sediment are main uncertainty contributors.
- •
30 to 50 samples are needed to obtain reliable proportion estimate.
- •
Proportion of < 63 μm may be scaled up to the proportion of whole soil.
- •
MC simulation underestimates standard error of mean proportion estimate.
- •
Weighting adjustment to mixing model often bias mean proportion estimate.