globalchange  > 气候变化与战略
DOI: 10.5194/hess-23-4825-2019
论文题名:
Expansion and contraction of the flowing stream network alter hillslope flowpath lengths and the shape of the travel time distribution
作者: Ilja Van Meerveld H.J.; Kirchner J.W.; Vis M.J.P.; Assendelft R.S.; Seibert J.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期:11
起始页码: 4825
结束页码: 4834
语种: 英语
Scopus关键词: Catchments ; Runoff ; Solute transport ; Topography ; Expansion and contraction ; Headwater catchment ; Network dynamics ; Precipitation events ; Subsurface transport ; Surface and subsurface flow ; Surface transport ; Travel time distributions ; Travel time ; catchment ; headwater ; hillslope ; precipitation (climatology) ; solute transport ; streamflow ; subsurface flow ; travel time
英文摘要: Flowing stream networks dynamically extend and retract, both seasonally and in response to precipitation events. These network dynamics can dramatically alter the drainage density and thus the length of subsurface flow pathways to flowing streams. We mapped flowing stream networks in a small Swiss headwater catchment during different wetness conditions and estimated their effects on the distribution of travel times to the catchment outlet. For each point in the catchment, we determined the subsurface transport distance to the flowing stream based on the surface topography and determined the surface transport distance along the flowing stream to the outlet. We combined the distributions of these travel distances with assumed surface and subsurface flow velocities to estimate the distribution of travel times to the outlet. These calculations show that the extension and retraction of the stream network can substantially change the mean travel time and the shape of the travel time distribution. During wet conditions with a fully extended flowing stream network, the travel time distribution was strongly skewed to short travel times, but as the network retracted during dry conditions, the distribution of the travel times became more uniform. Stream network dynamics are widely ignored in catchment models, but our results show that they need to be taken into account when modeling solute transport and interpreting travel time distributions. © 2019 Copernicus GmbH. All rights reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162848
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Ilja Van Meerveld, H.J., Dept. of Geography, University of Zurich, Winterthurerstrasse 190, Zurich, 8057, Switzerland; Kirchner, J.W., Dept. of Environmental System Sciences, ETH Zurich, Zurich, 8092, Switzerland, Swiss Federal Research Institute WSL, Birmensdorf, 8903, Switzerland, Dept. of Earth and Planetary Science, University of California, Berkeley, CA 94720, United States; Vis, M.J.P., Dept. of Geography, University of Zurich, Winterthurerstrasse 190, Zurich, 8057, Switzerland; Assendelft, R.S., Dept. of Geography, University of Zurich, Winterthurerstrasse 190, Zurich, 8057, Switzerland; Seibert, J., Dept. of Geography, University of Zurich, Winterthurerstrasse 190, Zurich, 8057, Switzerland, Dept. of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, Uppsala, 75007, Sweden

Recommended Citation:
Ilja Van Meerveld H.J.,Kirchner J.W.,Vis M.J.P.,et al. Expansion and contraction of the flowing stream network alter hillslope flowpath lengths and the shape of the travel time distribution[J]. Hydrology and Earth System Sciences,2019-01-01,23(11)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Ilja Van Meerveld H.J.]'s Articles
[Kirchner J.W.]'s Articles
[Vis M.J.P.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Ilja Van Meerveld H.J.]'s Articles
[Kirchner J.W.]'s Articles
[Vis M.J.P.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Ilja Van Meerveld H.J.]‘s Articles
[Kirchner J.W.]‘s Articles
[Vis M.J.P.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.