TY - GEN
T1 - Temporal variability of submarine groundwater discharge
T2 - International Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG)
AU - Weinstein, Yishai
AU - Shalem, Yehuda
AU - Burnett, William C.
AU - Swarzenski, Peter W.
AU - Herut, Barak
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
KW - Electrical resistivity
KW - Radon
KW - Seawater recycling
KW - Seep meter
KW - Submarine groundwater discharge
UR - http://www.scopus.com/inward/record.url?scp=55849084712&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:55849084712
SN - 9781901502046
T3 - IAHS-AISH Publication
SP - 125
EP - 133
BT - IAHS-AISH Publication - A New Focus on Groundwater - Seawater Interactions
Y2 - 2 July 2007 through 13 July 2007
ER -