GSTDTAP  > 气候变化
DOI10.1002/2017GL075238
The Magnitude and Origin of Groundwater Discharge to Eastern US and Gulf of Mexico Coastal Waters
Befus, Kevin M.1; Kroeger, Kevin D.2; Smith, Christopher G.3; Swarzenski, Peter W.4,5
2017-10-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2017
卷号44期号:20
文章类型Article
语种英语
国家USA; Monaco
英文摘要

Fresh groundwater discharge to coastal environments contributes to the physical and chemical conditions of coastal waters, but the role of coastal groundwater at regional to continental scales remains poorly defined due to diverse hydrologic conditions and the difficulty of tracking coastal groundwater flow paths through heterogeneous subsurface materials. We use three-dimensional groundwater flow models for the first time to calculate the magnitude and source areas of groundwater discharge from unconfined aquifers to coastal waterbodies along the entire eastern U.S. We find that 27.1 km(3)/yr (22.8-30.5 km(3)/yr) of groundwater directly enters eastern U.S. and Gulf of Mexico coastal waters. The contributing recharge areas comprised similar to 175,000 km(2) of U.S. land area, extending several kilometers inland. This result provides new information on the land area that can supply natural and anthropogenic constituents to coastal waters via groundwater discharge, thereby defining the subterranean domain potentially affecting coastal chemical budgets and ecosystem processes.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000416761600038
WOS关键词ATCHAFALAYA RIVERS ; SUBMARINE ; NITROGEN ; FLUXES ; TRANSFORMATIONS ; BIOGEOCHEMISTRY ; MISSISSIPPI ; EXCHANGE ; SEEPAGE ; RA-226
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/25781
专题气候变化
作者单位1.Univ Wyoming, Civil & Architectural Engn, Laramie, WY 82071 USA;
2.US Geol Survey, Coastal & Marine Sci Ctr, Woods Hole, MA 02543 USA;
3.US Geol Survey, Coastal & Marine Sci Ctr, St Petersburg, FL USA;
4.US Geol Survey, Pacific Coastal & Marine Sci Ctr, Santa Cruz, CA USA;
5.IAEA, Monaco, Monaco
推荐引用方式
GB/T 7714
Befus, Kevin M.,Kroeger, Kevin D.,Smith, Christopher G.,et al. The Magnitude and Origin of Groundwater Discharge to Eastern US and Gulf of Mexico Coastal Waters[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20).
APA Befus, Kevin M.,Kroeger, Kevin D.,Smith, Christopher G.,&Swarzenski, Peter W..(2017).The Magnitude and Origin of Groundwater Discharge to Eastern US and Gulf of Mexico Coastal Waters.GEOPHYSICAL RESEARCH LETTERS,44(20).
MLA Befus, Kevin M.,et al."The Magnitude and Origin of Groundwater Discharge to Eastern US and Gulf of Mexico Coastal Waters".GEOPHYSICAL RESEARCH LETTERS 44.20(2017).
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