In recent years practically all operators in California have largely confined their geophysical work to the reflection seismograph method. There has been a relatively small amount of gravity, magnetic and geochemical work, but with some minor exceptions the reflection method has been and still continues to represent by far the major geophysical method of exploration utilized in this area. But for one doubtful exception, all geophysical discoveries in recent years can be attributed to this method of exploration.
"Super Suckers: The Giant Pacific Octopus and Other Cephalopods of the Pacific Coast" by James A. Cosgrove and Neil McDaniel. 2009. [book review]
