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

Yishai Weinstein, Yehuda Shalem, William C. Burnett, Peter W. Swarzenski, Barak Herut

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationIAHS-AISH Publication - A New Focus on Groundwater - Seawater Interactions
Pages125-133
Number of pages9
Edition312
StatePublished - 2007
Externally publishedYes
EventInternational Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG) - Perugia, Italy
Duration: 2 Jul 200713 Jul 2007

Publication series

NameIAHS-AISH Publication
Number312
ISSN (Print)0144-7815

Conference

ConferenceInternational Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Country/TerritoryItaly
CityPerugia
Period2/07/0713/07/07

Keywords

  • Electrical resistivity
  • Radon
  • Seawater recycling
  • Seep meter
  • Submarine groundwater discharge

ASJC Scopus subject areas

  • Earth and Planetary Sciences (all)

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