Geophysics Under Stress: Geomechanical Applications of Seismic and Borehole Acoustic Waves (SEG Distinguished Instructor Series No. 13) provides an overview of the sensitivity of elastic waves in the earth to in situ stress, pore pressure, and the anisotropy of the rock fabric resulting from the depositional and stress history of the rock and introduces several of the applications of that sensitivity. A variety of applications and real data examples is presented, and particular emphasis is placed on the rock-physics basis underlying the use of geophysical data for solving geomechanical problems. The book, which accompanies the 2010 SEG/EAGE Distinguished Instructor Short Course, provides the basis for applying geophysics and rock-physics solutions to geomechanical challenges in exploration, drilling, and production and is designed for a broad range of geoscientists and engineers who work in the petroleum industry. The book is suitable for individuals from subsurface disciplines as well as drilling, reservoir, and petroleum engineering. (DISC on DVD, 759A, is also available.)