Transmissibility (\( T \)) is a measure of how easily groundwater can flow through an aquifer. It is the product of the aquifer's permeability (\( K \)) and the thickness of the aquifer (\( d \)).
Step 1: Definition of Transmissibility and Permeability
- Permeability (\( K \)) is a property of the aquifer material that measures its ability to transmit water. - Transmissibility (\( T \)) is a measure of the ability of the aquifer to transmit water over a unit width and is related to both the permeability and the thickness of the aquifer.
Step 2: Relationship between Transmissibility and Permeability
The relationship between transmissibility (\( T \)), permeability (\( K \)), and aquifer thickness (\( d \)) is given by: \[ T = Kd \] This equation tells us that transmissibility is directly proportional to both the permeability and the thickness of the aquifer.
Final Answer: \[ \boxed{\text{(A) } T = Kd} \]