10:45 AM - 11:00 AM
[ACG51-06] Heat-flux from the submarine groundwater discharge at the coastal area: A case from the Obama Bay, Japan
Keywords:submarine groundwater discharge, heat flux, coastal area
In Obama Bay, SGD rate has been estimated using 222Rn and salinity mass balance model (Sugimoto et al., 2016). We calculated the heat quantity from SGD by using the formula [E = Q * Cp * ΔT], where, E is the heat quantity from SGD; Q is the SGD rate from Sugimoto et al. (2016); Cp is the specific heat at constant pressure; and ΔT is the difference between seawater and groundwater temperatures. The following results are obtained from this study: The SGD resulted in hot and cold heat influx to the coastal areas during winter and summer seasons, respectively. Although SGD rate is observed much less than the river discharge, cold heat flux from SGD was greater than the river during summer. SGD resulted in lowering the sea water temperature at the bay during the summer. In this presentation, we will additionally discuss about the magnitude of this heat-flux as compared to the results of SGD heat-flux at another study site.