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Tidal effects on submarine groundwater discharge into the ocean
Author(s) -
Taniguchi Makoto
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl014987
Subject(s) - submarine groundwater discharge , bay , groundwater , oceanography , environmental science , hydrology (agriculture) , submarine , period (music) , geology , spring (device) , seawater , diurnal temperature variation , atmospheric sciences , aquifer , mechanical engineering , physics , geotechnical engineering , engineering , acoustics
Semi‐monthly, diurnal and semi‐diurnal variations of Submarine Groundwater Discharge (SGD) were found in Osaka bay, Japan, by continuous measurements of SGD using newly developed automated seepage meters. SGD increased sharply from neap to spring tide with semi‐monthly period. SGD also changes with diurnal and semi‐diurnal periods due to changes in hydraulic gradient between the groundwater and seawater in the coastal zone. SGD variations with semi‐monthly period by neap‐spring tidal pumping is much larger than those with diurnal and semi‐diurnal variations by tidal height changes.