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Simulation of submarine groundwater discharge salinity and temperature variations: Implications for remote detection

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Abstract

A hydrological analysis using a numerical simulation was done to identify the transient response of the salinity and temperature of submarine groundwater discharge (SGD) and utilize the results to guide data collection. Results indicate that the amount of SGD fluctuates depending on the ocean stage and geology, with the greatest amount of SGD delivered at low tide when the aquifer is in direct hydraulic contact with the ocean. The salinity of SGD remains lower than the ocean throughout the year; however, the salinity difference between the aquifer and ocean is inversely proportional to the ocean stage. The temperature difference between the ocean and SGD fluctuates seasonally, with the greatest temperature differences occurring in summer and winter. The outcome of this research reveals that numerical modelling could potentially be used to guide data collection including aerial surveys using electromagnetic (EM) resistivity and thermal imagery.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Simulation of submarine groundwater discharge salinity and temperature variations: Implications for remote detection
ISBN:
9781901502046
Issue:
312
Year Published:
2007
Language:
English
Larger Work Title:
IAHS-AISH Publication
First page:
272
Last page:
280
Number of Pages:
9
Conference Title:
International Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the In
Conference Location:
Perugia
Conference Date:
2 July 2007 through 13 July 2007