Figure F64. Total and effective vertical stress vs. depth at Site 1150. Linear fit of the data show that the total and effective vertical stresses have the following depth relationships: _v = -0.13619 + 0.0148370 x z (R >0.999) and _v^' = -0.27000 + 0.0084323 x z (R = 0.998). The weight of seawater (27.0 MPa) was excluded when calculating total vertical stress. Blue line = _v = total vertical stress; dotted red line = _v^' = effective vertical stress; and z = depth.