Spatial Distribution of Submarine Groundwater Discharge and Associated Nutrients within a Local Coastal Area

2012 ◽  
Vol 46 (10) ◽  
pp. 5319-5326 ◽  
Author(s):  
Takahiro Hosono ◽  
Masahiko Ono ◽  
William C. Burnett ◽  
Takahiro Tokunaga ◽  
Makoto Taniguchi ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Coastal Area ◽  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Submarine Groundwater

Chemical inputs from a karstic submarine groundwater discharge (SGD) into an oligotrophic Mediterranean coastal area

2014 ◽  
Vol 488-489 ◽  
pp. 1-13 ◽  
Author(s):  
Alexandra Pavlidou ◽  
Vassilis P. Papadopoulos ◽  
Ioannis Hatzianestis ◽  
Nomiki Simboura ◽  
Dionisis Patiris ◽  
...  
Keyword(s):  
Coastal Area ◽  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Submarine Groundwater ◽  
Chemical Inputs

Detecting Submarine Groundwater Plumes in the Salalah Area: a Radon Tracer and Numerical Integral Plume Model Approach

2019 ◽  
Author(s):  
◽  
Hajar Al Balushi
Keyword(s):  
Spatial Distribution ◽  
Submarine Groundwater Discharge ◽  
Arid Regions ◽  
Meteoric Water ◽  
Groundwater Discharge ◽  
Sultanate Of Oman ◽  
Exploration And Exploitation ◽  
Submarine Groundwater ◽  
Hydraulic Gradients ◽  
Model Approach

The inflow of fresh or brackish groundwater into the sea is referred to as Submarine Groundwater Discharge (SGD). The SGD is enforced by a terrestrial component whichmainly depends on freshwater extraction and recharge by meteoric water and on aquifer permeability. And a marine component that is mainly controlled by the spatial distribution of outflows and water depth (hydraulic gradients between land and sea). This study is motivated by the importance of freshwater in arid regions and, in particular, by the continuous challenges posed by the exploration and exploitation of fresh water sources inthe Sultanate of Oman. Moreover, there is a lack of studies on SGD phenomena alongthe 1000 km coastline in the South of Oman. The objective of this study is to develop a method to detect SGD spots in the offshore region, autonomously, and understanding thehydrodynamics of the discharge seepage for future backtracking, quantification and coastaland groundwater management. The study area Salalah, Dhofar Governorate, South of Oman is known to have a high natural groundwater recharge during the monsoon seasonand a karstic coastal seafloor, which results in a high potential of submarine groundwater discharge spots.

scholarly journals Evaluations of spatial distribution of submarine groundwater discharge

2006 ◽  
Vol 33 (6) ◽  
Author(s):  
Makoto Taniguchi ◽  
Tomotoshi Ishitobi ◽  
Jun Shimada ◽  
Naohiko Takamoto
Keyword(s):  
Spatial Distribution ◽  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Submarine Groundwater

scholarly journals Storm-Driven Fresh Submarine Groundwater Discharge and Nutrient Fluxes From a Barrier Island

2021 ◽  
Vol 8 ◽  
Author(s):  
Dini Adyasari ◽  
Daniel Montiel ◽  
Behzad Mortazavi ◽  
Natasha Dimova
Keyword(s):  
Spatial Variability ◽  
Groundwater Flow ◽  
Coastal Area ◽  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Barrier Island ◽  
Barrier Islands ◽  
Nutrient Fluxes ◽  
Storm Events ◽  
Submarine Groundwater

Quantifying and characterizing groundwater flow and discharge from barrier islands to coastal waters is crucial for assessing freshwater resources and contaminant transport to the ocean. In this study, we examined the groundwater hydrological response, discharge, and associated nutrient fluxes in Dauphin Island, a barrier island located in the northeastern Gulf of Mexico. We employed radon (222Rn) and radium (Ra) isotopes as tracers to evaluate the temporal and spatial variability of fresh and recirculated submarine groundwater discharge (SGD) in the nearshore waters. The results from a 40-day continuous 222Rn time series conducted during a rainy season suggest that the coastal area surrounding Dauphin Island was river-dominated in the days after storm events. Groundwater response was detected about 1 week after the precipitation and peak river discharge. During the period when SGD was a factor in the nutrient budget of the coastal area, the total SGD rates were as high as 1.36 m day–1, or almost three times higher than detected fluxes during the river-dominated period. We found from a three-endmember Ra mixing model that most of the SGD from the barrier island was composed of fresh groundwater. SGD was driven by marine and terrestrial forces, and focused on the southeastern part of the island. We observed spatial variability of nutrients in the subterranean estuary across this part of the island. Reduced nitrogen (i.e., NH4+ and dissolved organic nitrogen) fluxes dominated the eastern shore with average rates of 4.88 and 5.20 mmol m–2 day–1, respectively. In contrast, NO3– was prevalent along the south-central shore, which has significant tourism developments. The contrasting nutrient dynamics resulted in N- and P-limited coastal water in the different parts of the island. This study emphasizes the importance of understanding groundwater flow and dynamics in barrier islands, particularly those urbanized, prone to storm events, or located near large estuaries.

scholarly journals Exploration of submarine groundwater discharge using a drone in a coastal area of Hiji town, Oita Prefecture, Japan in summer

2016 ◽  
Vol 46 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Makoto YAMADA ◽  
Jun SHOJI ◽  
Shun TERAMOTO ◽  
Shinji OHSAWA ◽  
Taketoshi MISHIMA ◽  
...  
Keyword(s):  
Coastal Area ◽  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Submarine Groundwater

scholarly journals Spatial distribution and budget for submarine groundwater discharge in Eckernförde Bay (Western Baltic Sea)

2004 ◽  
Vol 49 (1) ◽  
pp. 157-167 ◽  
Author(s):  
Michael Schlüter ◽  
Eberhard J. Sauter ◽  
Claus E. Andersen ◽  
Henning Dahlgaard ◽  
Paul R. Dando
Keyword(s):  
Spatial Distribution ◽  
Baltic Sea ◽  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Submarine Groundwater
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