Details
| Original language | English |
|---|---|
| Article number | 601293 |
| Journal | Frontiers in Earth Science |
| Volume | 9 |
| Publication status | Published - 14 May 2021 |
| Externally published | Yes |
Abstract
Subterranean estuaries the, subsurface mixing zones of terrestrial groundwater and seawater, substantially influence solute fluxes to the oceans. Solutes brought by groundwater from land and solutes brought from the sea can undergo biogeochemical reactions. These are often mediated by microbes and controlled by reactions with coastal sediments, and determine the composition of fluids discharging from STEs (i.e., submarine groundwater discharge), which may have consequences showing in coastal ecosystems. While at the local scale (meters), processes have been intensively studied, the impact of subterranean estuary processes on solute fluxes to the coastal ocean remains poorly constrained at the regional scale (kilometers). In the present communication, we review the processes that occur in STEs, focusing mainly on fluid flow and biogeochemical transformations of nitrogen, phosphorus, carbon, sulfur and trace metals. We highlight the spatio-temporal dynamics and measurable manifestations of those processes. The objective of this contribution is to provide a perspective on how tracer studies, geophysical methods, remote sensing and hydrogeological modeling could exploit such manifestations to estimate the regional-scale impact of processes in STEs on solute fluxes to the coastal ocean.
Keywords
- biogeochemistry, coastal aquifer, ecology, geophysics, numerical modeling, submarine groundwater discharge, subterranean estuary, upscaling
ASJC Scopus subject areas
Sustainable Development Goals
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In: Frontiers in Earth Science, Vol. 9, 601293, 14.05.2021.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - A State-Of-The-Art Perspective on the Characterization of Subterranean Estuaries at the Regional Scale
AU - Moosdorf, Nils
AU - Böttcher, Michael Ernst
AU - Adyasari, Dini
AU - Erkul, Ercan
AU - Gilfedder, Benjamin S.
AU - Greskowiak, Janek
AU - Jenner, Anna Kathrina
AU - Kotwicki, Lech
AU - Massmann, Gudrun
AU - Müller-Petke, Mike
AU - Oehler, Till
AU - Post, Vincent
AU - Prien, Ralf
AU - Scholten, Jan
AU - Siemon, Bernhard
AU - Ehlert von Ahn, Cátia Milene
AU - Walther, Marc
AU - Waska, Hannelore
AU - Wunderlich, Tina
AU - Mallast, Ulf
N1 - Funding information: This publication is a result of the DFG supported KiSNet project (MA7041/6-1). MEB and AKJ wish to thank DFG for financial support during research training group BALTIC TRANSCOAST (GRK 2000) and MEB and CvA the DAAD for a Ph.D. stipend for a stay of CvA at IOW. This is BALTIC TRANSCOAST publication No. GRK 2000/0045. HW was funded by the Niedersächsisches Ministerium für Wissenschaft und Kultur (MWK) in the scope of project “BIME” (ZN3184). JS acknowledges the support through the SEAMOUNT BONUS project (art. 185), which is funded jointly by the EU and the Federal Ministry of Education and Research of Germany (BMBF, Grant Nos. 03F0771B). The authors acknowledge the helpful review comments by D. Brankovits, G. Chaillou and A. Pain, and the editorial handling by F. Frappart. Finally, the authors would like to express their gratitude to Bill Burnett, who turns 75 this year. Bill inspired many of us to pursue research in the field of SGD and supported wherever he could. Thank you, Bill.
PY - 2021/5/14
Y1 - 2021/5/14
N2 - Subterranean estuaries the, subsurface mixing zones of terrestrial groundwater and seawater, substantially influence solute fluxes to the oceans. Solutes brought by groundwater from land and solutes brought from the sea can undergo biogeochemical reactions. These are often mediated by microbes and controlled by reactions with coastal sediments, and determine the composition of fluids discharging from STEs (i.e., submarine groundwater discharge), which may have consequences showing in coastal ecosystems. While at the local scale (meters), processes have been intensively studied, the impact of subterranean estuary processes on solute fluxes to the coastal ocean remains poorly constrained at the regional scale (kilometers). In the present communication, we review the processes that occur in STEs, focusing mainly on fluid flow and biogeochemical transformations of nitrogen, phosphorus, carbon, sulfur and trace metals. We highlight the spatio-temporal dynamics and measurable manifestations of those processes. The objective of this contribution is to provide a perspective on how tracer studies, geophysical methods, remote sensing and hydrogeological modeling could exploit such manifestations to estimate the regional-scale impact of processes in STEs on solute fluxes to the coastal ocean.
AB - Subterranean estuaries the, subsurface mixing zones of terrestrial groundwater and seawater, substantially influence solute fluxes to the oceans. Solutes brought by groundwater from land and solutes brought from the sea can undergo biogeochemical reactions. These are often mediated by microbes and controlled by reactions with coastal sediments, and determine the composition of fluids discharging from STEs (i.e., submarine groundwater discharge), which may have consequences showing in coastal ecosystems. While at the local scale (meters), processes have been intensively studied, the impact of subterranean estuary processes on solute fluxes to the coastal ocean remains poorly constrained at the regional scale (kilometers). In the present communication, we review the processes that occur in STEs, focusing mainly on fluid flow and biogeochemical transformations of nitrogen, phosphorus, carbon, sulfur and trace metals. We highlight the spatio-temporal dynamics and measurable manifestations of those processes. The objective of this contribution is to provide a perspective on how tracer studies, geophysical methods, remote sensing and hydrogeological modeling could exploit such manifestations to estimate the regional-scale impact of processes in STEs on solute fluxes to the coastal ocean.
KW - biogeochemistry
KW - coastal aquifer
KW - ecology
KW - geophysics
KW - numerical modeling
KW - submarine groundwater discharge
KW - subterranean estuary
KW - upscaling
UR - http://www.scopus.com/inward/record.url?scp=85107047023&partnerID=8YFLogxK
U2 - 10.3389/feart.2021.601293
DO - 10.3389/feart.2021.601293
M3 - Review article
AN - SCOPUS:85107047023
VL - 9
JO - Frontiers in Earth Science
JF - Frontiers in Earth Science
SN - 2296-6463
M1 - 601293
ER -