Featured Research

from universities, journals, and other organizations

Freak Waves May Be Sinking Ships Off The Coast Of Japan

Date:
January 31, 2009
Source:
American Geophysical Union
Summary:
On 23 June 2008, the Suwa Maru No. 58, a fishing boat with 20 crew members, sank in seemingly moderate sea conditions of Cape Inubosaki, Japan. Reports from the investigators indicated that although reported wave heights were between 2 and 3 meters (6.5 and 9.8 feet), the ship may have encountered abnormal waves twice, sinking the ship about 10 minutes after being hit by the initial wave.

On 23 June 2008, the Suwa Maru No. 58, a fishing boat with 20 crew members, sank in seemingly moderate sea conditions of Cape Inubosaki, Japan.

Reports from the investigators indicated that although reported wave heights were between 2 and 3 meters (6.5 and 9.8 feet), the ship may have encountered abnormal waves twice, sinking the ship about 10 minutes after being hit by the initial wave.

Other possibilities, such as improper use of an anchor or an encounter with an unidentified submerged object, were suggested, but no definitive conclusion has been reached as to why the Suwa Maru sank. Noting that a number of ships have been wrecked in this region, which is notorious for abnormal waves, Tamura et al. seek to determine the state of the sea at the time of the shipwreck.

Using a hindcast wave simulation using a model driven by wind and ocean current, the authors find that at the time of the accident wave steepness increased and waves became long crested, creating a sea state favorable for freak wave occurrence.

Under the influence of rising wind speed, the swell system grew exponentially, dangerously churning the waters and creating a freakish sea state.


Story Source:

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


Journal Reference:

  1. Tamura et al. Freakish sea state and swell-windsea coupling: Numerical study of the Suwa-Maru incident. Geophysical Research Letters, 2009; 36 (1): L01607 DOI: 10.1029/2008GL036280

Cite This Page:

American Geophysical Union. "Freak Waves May Be Sinking Ships Off The Coast Of Japan." ScienceDaily. ScienceDaily, 31 January 2009. <www.sciencedaily.com/releases/2009/01/090128183927.htm>.
American Geophysical Union. (2009, January 31). Freak Waves May Be Sinking Ships Off The Coast Of Japan. ScienceDaily. Retrieved August 29, 2014 from www.sciencedaily.com/releases/2009/01/090128183927.htm
American Geophysical Union. "Freak Waves May Be Sinking Ships Off The Coast Of Japan." ScienceDaily. www.sciencedaily.com/releases/2009/01/090128183927.htm (accessed August 29, 2014).

Share This




More Earth & Climate News

Friday, August 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
Powered by NewsLook.com
Scientists Have Figured Out Why Rocks Move In Death Valley

Scientists Have Figured Out Why Rocks Move In Death Valley

Newsy (Aug. 28, 2014) The mystery of the moving rocks in Death Valley, California, has finally been solved. Scientists are pointing to a combo of water, ice and wind. Video provided by Newsy
Powered by NewsLook.com
Big Waves, Minor Flooding from Hurricane

Big Waves, Minor Flooding from Hurricane

AP (Aug. 27, 2014) Thundering surf spawned by Hurricane Marie pounded the Southern California coast Wednesday, causing minor flooding in a low-lying beach town. High surf warnings were posted for Los Angeles County south through Orange County. (Aug. 27) Video provided by AP
Powered by NewsLook.com
Calif. Quake Underscores Need for Early Warning

Calif. Quake Underscores Need for Early Warning

AP (Aug. 26, 2014) Researchers at UC Berkeley are testing a prototype of an earthquake early warning system that California is pursuing years after places like Mexico and Japan already have them up and running. (August 26) Video provided by AP
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:
from the past week

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