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Temporal variability of submarine groundwater discharge: Assessments via radon and seep meters, the southern carmel coast, Israel

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Abstract

Seep meter data from Dor Bay, Israel, showed a steady decrease in submarine groundwater discharge (SGD) rates between March and July 2006 (averages of 34, 10.4 and 1.5 cm d-1 in March, May and July, respectively), while estimates based on radon time series showed remarkably uniform averages (8 cm d-1). The May seep meter data show a rough positive correlation with sea level, unlike the negative correlation shown by the Rn-calculated rates. Smaller-size meters, deployed in July adjacent to the regular-size ones, showed significantly higher rates (10 cm d-1), which negatively correlated with salinity. It is suggested that the decreased rates documented by the seep meters are the result of an increased shallow seawater recharge in the bay (due to decreasing hydraulic gradients). This is not captured by the radon, since recharging water is radon-poor. The positive correlation of discharge with sea level is due to increased seawater recycling in times of high sea stand. Copyright ?? 2007 IAHS Press.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Temporal variability of submarine groundwater discharge: Assessments via radon and seep meters, the southern carmel coast, Israel
ISBN:
9781901502046
Issue:
312
Year Published:
2007
Language:
English
Larger Work Title:
IAHS-AISH Publication
First page:
125
Last page:
133
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