Offshore industrial mineral studies using a marine induced-polarization streamer system

More than 3 million square miles (nearly 8 million square kilometers) of territory that belongs to the United States is relatively unknown. This area is the Exclusive Economic Zone (EEZ), which extends from 3 nautical miles (5.6 km) off the coast of the United States and its affiliated islands out to 200 nautical miles (370 km) (fig. 1). Since President Reagan claimed U.S. sovereign rights over the EEZ by proclamation on 10 March 1983, much effort has gone into studying it, but much remains to be learned.