Figure F37. Total and effective vertical stress vs. depth at Site 1151. Linear fit of the data shows that the total and effective vertical stresses have the following depth relationships: v = -0.09218 + 0.014823 x z (R > 0.999) and s v´ = -0.15056 + 0.0083804 x z (R = 0.999), where z = depth. The weight of seawater (22.0 MPa) was excluded when the total vertical stress was calculated. Blue solid line = total vertical stress (s v), dotted red line = effective vertical stress (s v´)