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Evaluations of spatial distribution of submarine groundwater discharge
Author(s) -
Taniguchi Makoto,
Ishitobi Tomotoshi,
Shimada Jun,
Takamoto Naohiko
Publication year - 2006
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 - 10.1029/2005gl025288
Subject(s) - submarine groundwater discharge , submarine pipeline , submarine , shore , groundwater , structural basin , hydrology (agriculture) , geology , spatial distribution , environmental science , seawater , oceanography , geomorphology , geotechnical engineering , aquifer , remote sensing
The paired catchments with the same basin size and meteorological condition but different geology were selected to compare the fresh submarine groundwater discharge (SGD) rate observed by seepage meters with value calculated from water balance method in Kumamoto, Japan. The fresh SGD rate decreases with the distance from the coast, on the other hands, recirculated saline SGD is higher at near shore due to wave set‐up and at offshore due to tidal pumping. The spatial integrations of fresh SGD agree well with the water budget in both paired catchments. The difference of fresh component of SGD between two catchments may be caused by the difference of geology in the study area.