Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091824 |
Global Changes in 20‐year, 50‐year and 100‐year River Floods | |
L. Slater; G. Villarini; S. Archfield; D. Faulkner; R. Lamb; A. Khouakhi; J. Yin | |
2021-03-09 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Concepts like the 100‐year flood event can be misleading if they are not updated to reflect significant changes over time. Here we model observed annual maximum daily streamflow using a nonstationary approach to provide the first global picture of changes in: (a) the magnitudes of the 20‐, 50‐, and 100‐year floods (i.e. flows of a given exceedance probability in each year); (b) the return periods of the 20‐, 50‐, and 100‐year floods, as assessed in 1970 (i.e. flows of a fixed magnitude); and (c) corresponding flood probabilities. Empirically, we find the 20‐/50‐year floods have mostly increased in temperate climate zones, but decreased in arid, tropical, polar and cold zones. In contrast, 100‐year floods have mostly decreased in arid/temperate zones and exhibit mixed trends in cold zones, but results are influenced by the small number of stations with long records, and highlight the need for continued updating of hazard assessments. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/318643 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | L. Slater,G. Villarini,S. Archfield,等. Global Changes in 20‐year, 50‐year and 100‐year River Floods[J]. Geophysical Research Letters,2021. |
APA | L. Slater.,G. Villarini.,S. Archfield.,D. Faulkner.,R. Lamb.,...&J. Yin.(2021).Global Changes in 20‐year, 50‐year and 100‐year River Floods.Geophysical Research Letters. |
MLA | L. Slater,et al."Global Changes in 20‐year, 50‐year and 100‐year River Floods".Geophysical Research Letters (2021). |
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