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In the field of hydrogeology, "storage properties" are physical properties that characterize the capacity of an aquifer to release groundwater. These properties are Storativity (S), specific storage (Ss) and specific yield (Sy). They are often determined using some combination of field tests (e.g., aquifer tests) and laboratory tests on aquifer material samples. ==Storativity== Storativity or the storage coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer. Storativity is a dimensionless quantity, and ranges between 0 and the effective porosity of the aquifer. : * is the volume of water released from storage (()); * is the hydraulic head (()) * is the specific storage * is the specific yield * is the thickness of aquifer * is the area (()) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Specific storage」の詳細全文を読む スポンサード リンク
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