Seismic surveys are used by geoscience professionals to produce detailed images of rock types and formations beneath the earth’s surface. These surveys are created by bouncing sound waves off underground rock formations. The bounce back of sound waves are recorded, and a crude image is made to help determine the size and location of underground reservoirs. This process is similar to ultrasound technology. Various jobs exist in this field, all the way from entry-level field recorders, to high-level geoscientists who interpret and model the data.