DOI: 10.1002/2016GL070863
论文题名: Geologic influence on groundwater salinity drives large seawater circulation through the continental shelf
作者: Michael H.A. ; Scott K.C. ; Koneshloo M. ; Yu X. ; Khan M.R. ; Li K.
刊名: Geophysical Research Letters
ISSN: 0094-8476
EISSN: 1944-8207
出版年: 2016
卷: 43, 期: 20 起始页码: 10782
结束页码: 10791
语种: 英语
英文关键词: coastal groundwater
; geologic heterogeneity
; groundwater modeling
; groundwater-surface water interactions
; seawater intrusion
; submarine groundwater discharge
Scopus关键词: Aquifers
; Budget control
; Digital storage
; Discharge (fluid mechanics)
; Groundwater
; Groundwater flow
; Hydrogeology
; Saline water
; Salt water intrusion
; Seawater
; Surface waters
; Water management
; Water resources
; Coastal groundwater
; Geologic heterogeneity
; Ground water-surface water interactions
; Groundwater modeling
; Submarine groundwater discharge
; Groundwater resources
英文摘要: Observations of offshore freshened groundwater and saline groundwater discharge along continental shelves have important implications for water resources, ecosystem function, and the composition of the ocean, but they cannot be explained by basic theory. We show that these independent observations are linked and result from processes that drive variable-density groundwater flow through the spatial heterogeneity that is ubiquitous in geologic formations. We use lithologic data to develop geostatistical models that mimic the architecture of coastal aquifers. Simulation of groundwater flow and salt transport through these random realizations shows that heterogeneity produces spatially complex subsurface salinity distributions that extend tens of kilometers offshore, even at steady state. The associated density gradients drive high saline groundwater circulation rates that cannot be predicted by equivalent homogeneous models. Results suggest that these phenomena may be common along continental shelves, potentially altering estimates of ocean chemical budgets and impacting coastal water management for future generations. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992365376&doi=10.1002%2f2016GL070863&partnerID=40&md5=fcdc4a108e6ee0477e52f379d168f9d4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9439
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Geological Sciences, University of Delaware, Newark, DE, United States
Recommended Citation:
Michael H.A.,Scott K.C.,Koneshloo M.,et al. Geologic influence on groundwater salinity drives large seawater circulation through the continental shelf[J]. Geophysical Research Letters,2016-01-01,43(20).