A distributed analysis of lateral inflows in an Alaskan Arctic watershed underlain by continuous permafrost
A distributed analysis of lateral inflows in an Alaskan Arctic watershed underlain by continuous permafrost
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连续多年冻土下的阿拉斯加北极流域横向流入的分布式分析
DOI：
10.1002/hyp.13611
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发表时间：
2019
影响因子：
3.2
通讯作者：
Kane, Douglas L.
中科院分区：
文献类型：
--
作者：
King, Tyler V.;Neilson, Bethany T.;Overbeck, Levi D.;Kane, Douglas L.
横向径流控制着河流流量的空间分布，了解其模式对于准确模拟河流径流和行程时间分布是至关重要的，这是评估气候变化对水生生境适宜性、河流能量收支和溶解有机碳去向的影响所必需的。然而，由于缺乏测站，人们对北极河流横向流入的空间分布知之甚少。通过阿拉斯加北部库帕鲁克河流域内的河流测量和气象站网络，我们估计了9个子流域从7月1日到8月4日、2013年、2014年和2015年的降水量和横向入流量。在相对干燥、中等或潮湿的夏季，估算了每个流域的总降雨量、横向径流、径流比(面积标准化的横向径流除以降雨量)、对流域总流量的贡献百分比以及每公里河流的横向径流。结果表明，不同年份和不同次流域之间存在很大差异。从沿海平原到丘陵地带，流域内横向流入的总深度是从沿海平原到丘陵的5倍，这是对干旱和多雨年份之间降雨量变化三倍的响应，盆地横向流入深度是24倍。横向流入的总体空间趋势与以前的研究和夏季平均降水模式一致。然而，这些估计的空间分布性质表明，泉水供给的地表冰地貌附近的河段并不遵循一般的空间趋势，而通常被认为产生最少径流的沿海平原显示出对总河流流量的贡献潜力。这些发现被用来提供对横向流入的空间分布的了解，并确定影响水文反应的分水岭特征。
Lateral inflows control the spatial distribution of river discharge, and understanding their patterns is fundamental for accurately modelling instream flows and travel time distributions necessary for evaluating impacts of climate change on aquatic habitat suitability, river energy budgets, and fate of dissolved organic carbon. Yet, little is known about the spatial distribution of lateral inflows in Arctic rivers given the lack of gauging stations. With a network of stream gauging and meteorological stations within the Kuparuk River watershed in northern Alaska, we estimated precipitation and lateral inflows for nine subcatchments from 1 July to 4 August,2013, 2014, and 2015. Total precipitation, lateral inflows, runoff ratios (area‐normalized lateral inflow divided by precipitation), percent contribution to total basin discharge, and lateral inflow per river kilometre were estimated for each watershed for relatively dry, moderate, or wet summers. The results show substantial variability between years and subcatchments. Total basin lateral inflow depths ranged 24‐fold in response to a threefold change in rainfall between dry and wet years, whereas within‐basin lateral inflows varied fivefold from the coastal plain to the foothills. General spatial trends in lateral inflows were consistent with previous studies and mean summer precipitation patterns. However, the spatially distributed nature of these estimates revealed that reaches in the vicinity of a spring‐fed surficial ice feature do not follow general spatial trends and that the coastal plain, which is typically considered to produce minimal runoff, showed potential to contribute to total river discharge. These findings are used to provide a spatially distributed understanding of lateral inflows and identify watershed characteristics that influence hydrologic responses.
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受活动层融化影响的斜坡水文，RESOLUTE，N.W.T.
DOI：
--
发表时间：
1983
期刊：
影响因子：
--
作者：
M. Woo;P. Steer
通讯作者：
P. Steer
影响因子：
5.4
作者：
Michael T. O'Connor;M. Cardenas;B. Neilson;K. Nicholaides;G. Kling
通讯作者：
Michael T. O'Connor;M. Cardenas;B. Neilson;K. Nicholaides;G. Kling
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
N. Schmadel;B. Neilson;D. Stevens
通讯作者：
D. Stevens
影响因子：
2
作者：
Arp, C. D.;Whitman, M. S.;Urban, F. E.
通讯作者：
Urban, F. E.
影响因子：
3.9
作者：
Jorgenson, M. T.;Kanevskiy, M.;Koch, J.
通讯作者：
Koch, J.