A rapid Pacific submarine volcano eruption has exhaled a steam and ash cloud in the air and left a trail of debris on the surface of the water near Sarigan Island in the Northern Mariana Islands, U.S. officials said Monday. Game McGimsey, a volcanologist for the U.S. Geological Survey, said the vent, lying 1,000 feet under the surface, issued a cloud 40,000 reaching feet in the air.