The impact of weather patterns on historic and contemporary catchment sediment yields
The impact of weather patterns on historic and contemporary catchment sediment yields
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天气模式对历史和当代流域沉积物产量的影响
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
I. Foster
中科院分区：
文献类型：
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作者：
R. Wilby;H. Dalgleish;I. Foster
基于湖泊沉积物的产沙量估计经常被用来重建由环境变化引起的沉积物供应的变化模式。这种分析往往强调人为因素的重要性，特别是在时间尺度上改变土地使用和管理做法，超出了直接过程监测的范围。本文在中尺度大气环流模式的背景下研究了几个英国产沙年表。研究发现，自1861年以来冬季气旋兰姆天气类型的频率变化在沉积物产量变化中占很大比例。考虑到全球气候变化对地貌的潜在影响，这些结果也对未来的沉积物堆积率有影响。©1997 by John Wiley & Sons, Ltd。
Lake sediment-based estimates of sediment yield have frequently been used to reconstruct changing patterns of sediment supply arising from environmental change. Such analyses have often emphasized the importance of anthropogenic factors and, in particular, changing land use of management practices over timescales beyond the scope of direct process monitoring. This paper examines several U.K. sediment yield chronologies within the context of mesoscale atmospheric circulation patterns. Changes in the frequency of the winter cyclonic Lamb weather type since 1861 were found to account for a significant proportion of the variation in sediment yields. The results also have implications for future sediment accumulation rates given the potential geomorphological consequences of global climate change. © 1997 by John Wiley & Sons, Ltd.