Informazioni e Documenti dalla Rete sullo TSUNAMI


Algunas definiciones de Tsunami: 
" Tsunami es el nombre japonés para el sistema de ondas de gravedad del océano, que siguen a cualquier disturbio de la superficie libre, de escala grande y de corta duración" (Van Dorm, 1965) 

dal sito


Tsunami: examples, effects, explanatory graphics

Il sito è educational , curato dal  Dr. Brennan's TSUNAMI PAGE


Surviving a Tsunami—Lessons from Chile, Hawaii, and Japan

This 18-page booklet was originally published in paper by the U.S. Geological Survey and is now available here as a PDF document. It contains lessons on how to survive a tsunami based on accounts from people who survived the tsunami generated by the largest earthquake ever measured—the magnitude 9.5 earthquake in Chile on May 22, 1960. It also contains an excellent description of what tsunamis are.

This project was sponsored by The National Tsunami Hazard Mitigation Program. The booklet was prepared in cooperation with Universidad Austral de Chile, the University of Tokyo, the University of Washington, the Geological Survey of Japan, and the Pacific Tsunami Museum. 
U.S. Department of the Interior, U.S. Geological Survey, Menlo Park, California, USA


A   tsunami is a series of ocean waves most commonly caused by an earthquake beneath the ocean floor. They can be caused by local quakes, such as in 1992, when a Cape Mendocino quake produced a tsunami that hit Humboldt Bay within 20 minutes. Tsunamis can also be caused by quakes in far away areas, such as in 1964, when an earthquake in Alaska produced a destructive tsunami that inundated Crescent City.

Tsunamis have killed in the past. They are always a possible threat in the seismically active North Coast region, however, destructive tsunamis are rare and shouldn't ruin your visit to the beach.

In the event that you do find yourself near the coast when an earthquake hits, be aware of the following guidelines:

 Move to higher ground immediately. A tsunami may be coming within minutes.
 Go on foot.

If there is no high ground, move inland away from the coastline.

Stay away from the coast. Later waves are often higher than the first. Waves may continue to arrive for hours.

 Listen to your radio for the "all clear" signal.

 Fonte California State Park


Major Tsunamis of 1992 - Nicaragua and Indonesia
West Coast/Alaska Tsunami Warning Center, NOAA/NWS
Past Tsunamis along the U.S. West Coast, British Columbia, and Alaska

November 4, 1952 Kamchatka Tsunami Pictures are from the National Geophysical Data Center's Tsunami picture CD-ROM.

Information in this table is taken predominantly from Tsunamis Affecting the West Coast of the United States 1806-1992 by Lander, et al., 1993, and from Tsunami Affecting Alaska 1737-1996 by Lander, 1996.


Nuova Zelanda 

The GeoNet Data Centre is responsible for the capture of all geophysical data streams from field instruments or third party sources, the basic processing of raw data and the maintenance of archives. 

geonet about tsunami 


Established in 1949, the Pacific Tsunami Warning Center (PTWC) in Ewa Beach, Hawai`i, provides warnings for teletsunamis to most countries in the Pacific Basin as well as to Hawai`i and all other US interests in the Pacific outside of Alaska and the US West Coast. Those areas are served by the West Coast / Alaska Tsunami Warning Center (WC/ATWC) in Palmer, Alaska. PTWC is also the warning center for Hawai`i's local and regional tsunamis.  TSUNAMI THE GREAT WAVES