Related info

Basic information about tsunami
Tsunami: Waves of Destruction
Savage Earth, PBS Online

"Tsunami inundating Hilo, Hawaii. Note man on pier. This disaster provided impetus for C&GS to establish tsunami warning system."
Image courtesy NOAA Photo Library.

Tsunami: The Great Waves
Basic information in English, Spanish, and French. "This 12-page glossy brochure provides information on what a tsunami is, how fast and how big they can be, what causes them, and describes programs undertaken to mitigate this hazard, including the development of tsunami warning centers, research programmes, and safety rules describing what to do when a tsunami attack your coastline. Tsunami The Great Waves (3rd edition) was last updated and revised in 2002. It was designed and published by the International Tsunami Information Centre, with support from the UNESCO/IOC Tsunami Programme, the USA (National Ocean and Atmospheric Administration), and France (Laboratoire de Geophysique)."
International Tsunami Information Center, NOAA

Why not use the term "tidal wave"? It seems outdated to use this term because tsunami and tides are caused by very different circumstances. The waves of tsunami are not caused by tidal forces.

Why do people continue to use the term "tidal wave"? It is defensible and proper to do so because it is in some dictionaries. Even if it is a misnomer, the term is currently meaningful to some people. However, it is a misnomer and those "in the know" consider it improper and/or archaic.

What is the plural of tsunami? Usage varies among dictionaries. Earthguide chooses to use the term without a "s" to indicate both the singular and plural. One reason not to use the "s" - the term is orignally Japanese and in that language there there is no plural distinction.
Images, maps and data.
National Geophysical Data Center (NGDC)

General information and resource.
Environment Waikato Regional Council, New Zealand

Tsunami Research Program
Pacific Marine Environmental Laboratory, NOAA

Tsunami: Facts About Killer Waves
National Geographic

American Red Cross

Images for download and slides for purchase.
National Geophysical Data Center (NGDC)

QuickBird Images of Tsunami Sites
Before and after satellite images.
Digital Globe

Satellite Images of Tsunami Affected Areas
Images acquired and processed by CRISP, National University of Singapore
IKONOS image © CRISP 2004
SPOT image © CNES 2004
TERRA Modis image © NASA 2004 (

Simulation - December 26 Tsunami in Indian Ocean
Animation of simulated tsunami across the Indian Ocean.
The link to the animation is near the very bottom of the page.

National Institute of Advanced Industrial Science and Technology (AIST), Japan

Causes of tsunami - Earthquakes
This Dynamic Earth: The Story of Plate Tectonics
Online reference about plate tectonics, the ultimate cause of major earthquake and volcanic activity on Earth.
By Kious and Tilling, U.S. Geological Survey

Recent Earthquake Activity around the World
U.S. Geological Survey

Recent Earthquake Activity in the US
U.S. Geological Survey

Southern California Earthquake Center
About earthquakes in southern California.

Broadband Seismic Data Collection Center
Recent earthquakes in southern California.
Scripps Institution of Oceanography

Causes of tsunami - Underwater Slides
Hang Ten
"A new USC study shows that tsunamis - triggered by earthquakes and underwater slides - could threaten Southern California’s coast."
By Bob Calverley, USC News

Tsunami FAQ
About the risk of tsunami, including the Albemarle-Currituck slide mapped by SIO geologist Neal Driscoll.
North Carolina Museum of Natural Sciences

Causes of tsunami - Asteroid impact
Asteroids & Tsunamis
By Michael Paine,

Massive tsunami sweeps Atlantic Coast in asteroid impact scenario for March 16, 2880
UC Santa Cruz

Information about past tsunami
Explains the reasons for the killer tsunami that struck Papua New Guinea in 1998.
The Why Files, University of Wisconsin

Descriptive Model of the July 17, 1998 Papua New Guinea Tsunami
Explains the reasons for this killer tsunami. Includes animations showing the results of model simulations.
Western Region Coastal & Marine Geology, U.S. Geological Survey

Unusual stories
Did animals' 'sixth sense' save them from tsunami?

Clues to ancient tsunami found: UH scientists report that a landslide once sent waves four miles inland on the Big Isle

Of interest in southern California
Scientists map potential tsunami flood zones along West Coast

Geologists: Tsunamis little threat here


© 2005 by Earthguide
and by the Regents of the University of California.
All rights reserved.
Last modifed Thursday, January 6, 2005