Featured Research

from universities, journals, and other organizations

Estimating Local Tsunami Wave Height From Great Earthquakes

Date:
August 15, 2007
Source:
American Geophysical Union
Summary:
The massive 9.2-magnitude Sumatra-Andaman earthquake on 26 December 2004 generated a tsunami that propagated throughout the Indian Ocean, killing more than 250,000 people. By contrast, the nearby 8.7-magnitude Simeulue-Nias earthquake on 28 March 2005 generated a small tsunami that caused only a few casualties. Though these earthquakes occurred in similar tectonic settings, their tsunami were markedly different, highlighting the need for reliably determining tsunami hazards from earthquake geometry.

The massive 9.2-magnitude Sumatra-Andaman earthquake on 26 December 2004 generated a tsunami that propagated throughout the Indian Ocean, killing more than 250,000 people.

Related Articles


By contrast, the nearby 8.7-magnitude Simeulue-Nias earthquake on 28 March 2005 generated a small tsunami that caused only a few casualties. Though these earthquakes occurred in similar tectonic settings, their tsunami were markedly different, highlighting the need for reliably determining tsunami hazards from earthquake geometry.

Using geodetic and stress accumulation studies, McCloskey et al. model about 100 different complex earthquake ruptures in this area and calculate their sea-floor displacements and resulting tsunami wave heights. They find that, for locations close to the earthquake source, the timing of tsunami inundation is independent of the earthquake magnitude and slip distribution.

However, the maximum tsunami wave height is directly proportional to the vertical displacement of the rupture. Because stress field studies indicate that the Sumatra-Andaman region is overdue for another great earthquake, the authors note that a single estimate of vertical displacement during an earthquake might provide a reliable short-term forecast of tsunami wave height.

Title: Near-field propagation of tsunamis from megathrust earthquakes

Authors: John McCloskey, Andrea Antonioli, Sandy Steacy, Suleyman S. Nalbant, JianDong Huang, and Paul Dunlop: Geophysics Research Group, School of Environmental Sciences, University of Ulster, Coleraine, Northern Ireland, U.K.; Alessio Piatanesi, Massimo Cocco, and Carlo Giunchi: Seismology and Tectonophysics Department, Istituto Nazionale de Geofisica e Vulcanologia, Rome, Italy; Kerry Sieh: Tectonics Observatory, California Institute of Technology, Pasadena, California, U.S.A.

Source: Geophysical Research Letters (GRL) paper 10.1029/2007GL030494, 2007


Story Source:

The above story is based on materials provided by American Geophysical Union. Note: Materials may be edited for content and length.


Cite This Page:

American Geophysical Union. "Estimating Local Tsunami Wave Height From Great Earthquakes." ScienceDaily. ScienceDaily, 15 August 2007. <www.sciencedaily.com/releases/2007/08/070814154400.htm>.
American Geophysical Union. (2007, August 15). Estimating Local Tsunami Wave Height From Great Earthquakes. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2007/08/070814154400.htm
American Geophysical Union. "Estimating Local Tsunami Wave Height From Great Earthquakes." ScienceDaily. www.sciencedaily.com/releases/2007/08/070814154400.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ivory Trade Boom Swamps Law Efforts

Ivory Trade Boom Swamps Law Efforts

Reuters - Business Video Online (Dec. 17, 2014) Demand for ivory has claimed the lives of tens of thousands of African elephants and now a conservation report says the illegal trade is overwhelming efforts to enforce the law. Amy Pollock reports. Video provided by Reuters
Powered by NewsLook.com
Indictments in West Virginia Chemical Spill Case

Indictments in West Virginia Chemical Spill Case

AP (Dec. 17, 2014) A grand jury indicted four former executives of Freedom Industries, the company at the center of the Jan. 9, 2014 chemical spill in Charleston, West Virginia. The spill contaminated the Elk River and the water supply of 300,000 people. (Dec. 17) Video provided by AP
Powered by NewsLook.com
Uphill Battle to Tackle Indonesian Shark Fishing

Uphill Battle to Tackle Indonesian Shark Fishing

AFP (Dec. 17, 2014) Sharks are hauled ashore every day at a busy market on the central Indonesian island of Lombok, the hub of a booming trade that provides a livelihood for local fishermen but is increasingly alarming environmentalists. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
France's Sauternes Wine Threatened by New Train Line

France's Sauternes Wine Threatened by New Train Line

AFP (Dec. 16, 2014) Winemakers in southwestern France's Bordeaux are concerned about a proposed high speed train line that could affect the microclimate required for the region's sweet wine. Duration: 01:06 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins