Tsunami 41 : Series of traveling ocean waves of great length and long period usually generated by submarine geophysical displacement. May or may not be preceded by an earthquake
City of Seward Emergency Operations Plan, Appendix D (Acronyms, Abbreviations & Glossary), Developed by Nuka Research & Planning Group, LLC., Alaska, USA 2007. http://www.cityofseward.net/pubWork/docs/reports/0 70202%20Seward%20EOP%20(2).pdf, (ND/ Avalan/ Snowpack - Amer) {27}