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A groundwater-surface water partition for the contiguous United States and select case studies
Descriptive
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Title
A groundwater-surface water partition for the contiguous United States and select case studies
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Schaller
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Morgan F.
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Morgan F. Schaller
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author
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Ying-Fan
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Advisory Committee
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Ying-Fan Reinfelder
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chair
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Ashley
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Gail
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Advisory Committee
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Gail M Ashley
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internal member
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Robinson
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David
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Advisory Committee
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David A Robinson
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internal member
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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Text
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theses
OriginInfo
DateCreated
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2007
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2007-10
Language
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English
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electronic
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application/pdf
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text/xml
Extent
viii, 111 pages
Abstract
The terrestrial water cycle is a highly effective, yet incompletely understood agent for the distribution of continental energy, and hence, the continental energy and water budgets are closely linked. The spatial organization and temporal memory of the groundwater reservoir, and its interaction with the surface water has an integral role in the lateral transport of water and energy, affecting soil moisture distributions, evapotranspiration, precipitation and stream discharge across the continent. The current climate models are unable to account for this lateral component, and consequentially are inadequate at predicting future hydrologic conditions; hence, a separation of groundwater flow from surface water flow is necessary to asses the relative importance of each reservoir across the land surface. Here we present the results of such a groundwater-surface water partition, where 39 years of surface recharge, derived from VIC simulation, are separated from USGS HCDN annual mean observed (naturalized) stream discharge from 1555 basins across the continental U.S. It was found that stream discharge (Qr) may account for 2% to 891% of the total surface recharge (R) across the 1555 basins, suggesting that individual drainage basins export or import significant amounts of water to or from the groundwater reservoir (e.g., a Qr/R value of 2 (200%) for a basin indicates that half the river discharge from that basin is derived from groundwater input from other basins). Detailed investigations of individual basins across the continent in terms of this partition indicate that the control over lateral transport of subsurface water is primarily a function of the subsurface geology. Further, a marked incongruity between the surface drainage flow direction and groundwater flow direction is apparent in several cases – particularly where regional groundwater flow has developed – suggesting that surface drainage as a result of elevation is only partially indicative of subsurface flow regimes. The modulation of surface drainage by the groundwater system suggests that groundwater flow is a significant portion of the continental water cycle. Hence, this wide range of effects attributable to groundwater flow implies that the groundwater reservoir should be included in climate modeling efforts, particularly if estimates of future water resource availability are a goal of such efforts.
Note
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M.S.
Note
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Includes bibliographical references (p. 79-83).
Subject
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Topic
Geological Sciences
Subject
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Topic
Groundwater
Subject
(ID = SUBJ3);
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Topic
Hydrogeology
Subject
(ID = SUBJ4);
(authority = ETD-LCSH)
Topic
Water balance (Hydrology)
Subject
(ID = SUBJ5);
(authority = ETD-LCSH)
Topic
Hydrologic cycle
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Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17029
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ETD_314
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NjNbRU
Identifier
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doi:10.7282/T34F1R3N
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ETD graduate
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Rights
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The author owns the copyright to this work.
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Copyright protected
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Open
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Morgan Schaller
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Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
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Non-exclusive ETD license
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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