The hydrology of headwater catchments from the plains to the continental divide, Boulder Creek Watershed, Colorado
The hydrology of headwater catchments from the plains to the continental divide, Boulder Creek Watershed, Colorado
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从平原到大陆分水岭的源头集水区的水文学，科罗拉多州博尔德溪流域
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发表时间：
2010
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通讯作者：
R. Cowie
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作者：
R. Cowie
Cowie, Rory（地理学硕士）从平原到大陆分水岭的水源集水学，Bolder Creek流域，科罗拉多州Mark W. Williams教授指导的论文在三个以雪为主的水源集水区中测定了降水、积雪、融雪和水流的同位素组成，以量化改变稳定同位素（氧-18、O和氘）的空间变异性和过程。H)在海拔梯度上以及在开放和冠下环境之间的组成。降水δO值在3个流域间无显著差异，但在积雪和融雪区存在显著差异。各流域降水降落δO在开阔和冠层环境下无显著差异。在海拔最低的两个地点，开放和冠下积雪的δO值存在显著差异，但在任何地点，开放和冠下积雪的δO值无显著差异。此外，利用同位素（δO和H（氚））和地球化学（Na、Si和DOC）示踪剂，研究了Boulder Creek流域内海拔2,310 m的四个水源集水区的停留时间、水源和流动路径。在海拔梯度上发生的降水的数量和类型也被生成。2009年降水总量从1800米的563毫米到3528米的1214毫米不等。最高海拔积雪占85%，最低海拔积雪仅占32%。对降水和溪流中的δO值进行卷积积分得到了相对较短的平均停留时间，从高山的1.12年到高山的1.12年不等
Cowie, Rory (M.A. Geography) The Hydrology of Headwater Catchments from the Plains to the Continental Divide, Bolder Creek Watershed, Colorado Thesis directed by Professor Mark W. Williams Isotopic composition of precipitation, snow cover, snow melt, and stream flow were determined in three snow dominated headwater catchments to quantify the spatial variability and processes that alter stable isotope (oxygen-18, O and deuterium, H) composition across an elevational gradient and between open and under canopy environments. Across the three catchments there was no significant difference in δO in precipitation but a significant difference was found within the snow pack and snow melt. Within each of the catchments there was no significant difference in δO in precipitation landing in open and under canopy environments. At the two lowest elevation sites significant differences between open and under canopy snow pack δO were observed but there was no significant differences in δO of snow melt between open and under canopy settings at any location. Additionally, isotopic (δO and H (tritium)) and geochemical (Na, Si, and DOC) tracers were used to investigate residence times, source waters, and flow paths in four headwater catchments along a 2,310 m elevational gradient within the Boulder Creek Watershed. The amount and type of precipitation occurring across the elevational gradient was also produced. Precipitation totals from 2009 ranged from 563 mm at 1800 m to a high of 1214 mm at 3528 m. The precipitation was 85% snow at the highest elevation and only 32% snow at the lowest elevation. Application of a convolution integral to the δO values in precipitation and stream waters produced relatively short mean residence times ranging from 1.12 years in the alpine to