DOI: 10.1002/2016GL070796
论文题名: Trends in annual and extreme flows in the Lena River basin, Northern Eurasia
作者: Tananaev N.I. ; Makarieva O.M. ; Lebedeva L.S.
刊名: Geophysical Research Letters
ISSN: 0094-8489
EISSN: 1944-8220
出版年: 2016
卷: 43, 期: 20 起始页码: 10764
结束页码: 10772
语种: 英语
英文关键词: Arctic hydrology
; change point detection
; the Lena River
; time series analysis
; trend detection
Scopus关键词: Rivers
; Watersheds
; Arctic hydrology
; Change point detection
; Discontinuous permafrost
; Extreme flows
; Lena rivers
; Northern Eurasia
; Trend detection
; Upward trend
; Time series analysis
英文摘要: A long-term daily streamflow data set, covering the period from 1925 to 2013, was compiled for the Lena River basin, with an average record length of 49 years. Time series of mean annual daily flow (MADF) and extreme (maximum, Qmax, and minimum, Qmin) daily flows were subject to trend detection and change point detection analysis. Significant changes result mostly from rapid “breakpoint” homogeneity disruptions. Thirty one time series showed trends in MADF, 10, in Qmax, and 32 of the 55 records with nonzero Qmin, significant at p ≤ 0.05. Upward trends prevail in both mean annual and extreme flows, with average magnitudes of 47% (MADF), 56% (Qmax), and 68% (Qmin). Two to three stations in each subset showed downward trends (averaging −20%, −39%, and −38%, respectively). Abrupt changes are observed in the 1990s and early 2000s mostly in the headwaters of the basin, underlain by discontinuous permafrost. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995618147&doi=10.1002%2f2016GL070796&partnerID=40&md5=6d6400ad91eee4fb341924307e8f2716
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9452
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: ECOLAB, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
Recommended Citation:
Tananaev N.I.,Makarieva O.M.,Lebedeva L.S.. Trends in annual and extreme flows in the Lena River basin, Northern Eurasia[J]. Geophysical Research Letters,2016-01-01,43(20).