$24$ When a soil is submerged, the solid particles are

subject to buoyancy caused by the water pressure

existing at the "underwater" depth position being

analyzed. The result is that the effective intergran$-$

ular weight $($that is$,$ the magnitude of soil weight

transmitted at the points where the particles are in

contact$)$ of the submerged soil bulk is less than for

the condition where the soil bulk is not sub$-$

merged. Why is the difference between the unit

weight of a submerged soil and the same soil

above water $($the reduction due to buoyancy$)$

independent of the depth below the water surface?