English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Groundwater and pore water inputs to the coastal zone

Burnett, W. C., Bokuniewicz, H., Huettel, M., Moore, W. S., & Taniguchi, M. (2003). Groundwater and pore water inputs to the coastal zone. Biogeochemistry, 66(1-2), 3-33.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
Huettel3.pdf (Publisher version), 4MB
 
File Permalink:
-
Name:
Huettel3.pdf
Description:
-
Visibility:
Restricted ( Max Planck Society (every institute); )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Burnett, W. C., Author
Bokuniewicz, H., Author
Huettel, M.1, Author              
Moore, W. S., Author
Taniguchi, M., Author
Affiliations:
1Flux Group, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481701              

Content

show
hide
Free keywords: biogeochemistry; coastal zone; fluxes; hydrology; submarine groundwater discharge
 Abstract: Both terrestrial and marine forces drive underground fluid flows in the coastal zone. Hydraulic gradients on land result in groundwater seepage near shore and may contribute to flows further out on the shelf from confined aquifers. Marine processes such as tidal pumping and current-induced pressure gradients may induce interfacial fluid flow anywhere on the shelf where permeable sediments are present. The terrestrial and oceanic forces overlap spatially so measured fluid advection through coastal sediments may be a result of composite forcing. We thus define “submarine groundwater discharge” (SGD) as any and all flow of water on continental margins from the seabed to the coastal ocean, regardless of fluid composition or driving force. SGD is typically characterized by low specific flow rates that make detection and quantification difficult. However, because such flows occur over very large areas, the total flux is significant. Discharging fluids, whether derived from land or composed of re-circulated seawater, will react with sediment components. These reactions may increase substantially the concentrations of nutrients, carbon, and metals in the fluids. These fluids are thus a source of biogeochemically important constituents to the coastal ocean. Terrestrially-derived fluids represent a pathway for new material fluxes to the coastal zone. This may result in diffuse pollution in areas where contaminated groundwaters occur. This paper presents an historical context of SGD studies, defines the process in a form that is consistent with our current understanding of the driving forces as well as our assessment techniques, and reviews the estimated global fluxes and biogeochemical implications. We conclude that to fully characterize marine geochemical budgets, one must give due consideration to SGD. New methodologies, technologies, and modeling approaches are required to discriminate among the various forces that drive SGD and to evaluate these fluxes more precisely.

Details

show
hide
Language(s): eng - English
 Dates: 2003-11
 Publication Status: Published in print
 Pages: 31
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 177121
ISI: 000186894700001
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Biogeochemistry
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Dordrecht : M. Nijhoff/Dr W. Junk Publishers
Pages: - Volume / Issue: 66 (1-2) Sequence Number: - Start / End Page: 3 - 33 Identifier: ISSN: 0168-2563
CoNE: https://pure.mpg.de/cone/journals/resource/954925484702