화산·얼음·물
과학동아 1993년 08호
but this has recently been disproved by geologists Peter Kokelaar, of the University of Liverpool, United Kingdom, and Cathy Busby, of the University of California at Santa Barbara. By studying what was once an ancient submarine caldera in California, they discovered that if the pyroclastic flow from an undersea volcano is moving fast enough, its glass shards and pumice will not mix with ...