Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jhydrol.2013.12.018 |
Surface water hydrology and geomorphic characterization of a playa lake system: Implications for monitoring the effects of climate change | |
Adams, Kenneth D.; Sada, Donald W. | |
通讯作者 | Adams, Kenneth D. |
来源期刊 | JOURNAL OF HYDROLOGY |
ISSN | 0022-1694 |
EISSN | 1879-2707 |
出版年 | 2014 |
卷号 | 510页码:92-102 |
英文摘要 | Playa lakes are sensitive recorders of subtle climatic perturbations because these ephemeral water bodies respond to the flux of diffuse and channelized flow from their watersheds as well as from direct precipitation. The Black Rock Playa in northwestern Nevada is one of the largest playas in North America and is noted for its extreme flatness, varying less than one meter across a surface area of 310 km(2). Geo-referenced Landsat imagery was used to map surface-area fluctuations of ephemeral lakes on the playa from 1972 to 2013 to provide baseline data on surface water hydrology of this system to compare to future hydrologic conditions caused by climate change. The area measurements were transformed into depth and volumetric estimates using results of detailed topographic global positioning system (GPS) surveys and correlated with available surface hydrological and meteorological monitoring data. Playa lakes reach their maximum size (<350 km(2)) in spring, fed by melting snows from high mountains on the periphery of the drainage basin, and usually desiccate by early- to mid-summer. The combination of a shallow groundwater table, sediment deposition, and hydro-aeolian planation probably are largely responsible for the flatness of the playa. When lakes do not form for a period of several years, the clay- and silt-rich playa surface transforms from one that is hard and durable into one that is soft and puffy, probably from upward capillary movement of water and resultant evaporation. Subsequent flooding restores the hard and durable surface. The near-global availability of Landsat imagery for the last 41 years should allow the documentation of baseline surface hydrologic characteristics for a large number of widely-distributed playa lake systems that can be used to assess the hydrologic effects of future climate changes. (C) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | Black Rock Playa Landsat Hydrology Geomorphology Climate change |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000333138800009 |
WOS关键词 | LEVEL FLUCTUATIONS ; LAHONTAN BASIN ; TIME-SERIES ; BLACK ROCK ; NEVADA ; DESERT |
WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Engineering ; Geology ; Water Resources |
来源机构 | Desert Research Institute |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183419 |
作者单位 | Desert Res Inst, Reno, NV 89512 USA |
推荐引用方式 GB/T 7714 | Adams, Kenneth D.,Sada, Donald W.. Surface water hydrology and geomorphic characterization of a playa lake system: Implications for monitoring the effects of climate change[J]. Desert Research Institute,2014,510:92-102. |
APA | Adams, Kenneth D.,&Sada, Donald W..(2014).Surface water hydrology and geomorphic characterization of a playa lake system: Implications for monitoring the effects of climate change.JOURNAL OF HYDROLOGY,510,92-102. |
MLA | Adams, Kenneth D.,et al."Surface water hydrology and geomorphic characterization of a playa lake system: Implications for monitoring the effects of climate change".JOURNAL OF HYDROLOGY 510(2014):92-102. |
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