Sub-oceanic Changes : Geomorphic changes on the ocean floor resulting from earthquakes, volcanic eruptions, depositions by turbidity currents, or by slow occurring processes such as ocean floor spreading
Intergovernmental Oceanographic Commission IOC technical series 37, Tsunami Glossary (A glossary of terms and acronyms used in the tsunami literature - English), , United Nations Educational, Scientific and Cultural Organization UNESCO, Paris, France 1991. http://unesdoc.unesco.org/images/0008/000885/08853 8eb.pdf, (ND/ Tsunami Sci - Brit) {590}