Devastating Tsunamis in the Pacific

The Pacific Ocean and its adjacent marginal seas are the largest, most diverse, and most tsunami-prone of any of the earth’s oceans. Pacific Ocean nations face and must be prepared for distant, and local tsunami threats. In the past, Member States depended primarily on the international advice services of the Pacific Tsunami Warning Center (PTWC), Northwest Pacific Tsunami Advisory Centre (NWPTAC), and US National Tsunami Warning Center (US NTWC) to inform their National Tsunami Warning Centre decisions.  But lessons learned recently on how to best prepare for local and regional tsunamis acknowledges that every country needs tp address the threat themselves through improved and expanded National Tsunami Warning Centre and Disaster Management Office capacities targeting coastal communities, and through formal regional collaboration. On 11 March 2011, the Pacific experienced and responded to its third destructive local tsunami in three years.  Following the 29 September 2009 Samoa Tsunami that killed 192 in Samoa, American Samoa, and Tonga, and the 27 February 2010 Chile Tsunami that killed 124 in Chile, Japan is now facing a tremendous effort to analyze its national response and preparedness in order to better mitigate its tsunamis losses in the future. On 6 February 2013, a local tsunami in the Solomon Islands killed 9. On 1 April 2014, a local tsunami in northern Chile killed 7.

Chile Tsunami Event 1 April 2014

RIFT run1 kmz CoastalForecast chile

01apr2014 map ttt tidetool

PTWC RIFT detailed coastal forecast amplitudes, Chile Pacific Sea Level Stations with Tsunami Travel Times (TideTool)

Solomons Tsunami Event 6 February 2013

max amp santa cruz 6feb13

venga destroyed houses solomon islands santa cruz 6feb13

PTWC RIFT model simulation showing the predicted maximum off-shore tsunami wave amplitudes from the 1112 UTC 6 February 2013 shallow thrust earthquake. Tsunami damage to homes at Venga village in Santa Cruz Islands, Solomon Islands. Photo courtesy of Solomon Islands National Disaster Management Office.

Japan Tsunami Event 11 March 2011

Japan Tsunami Event 11 March 2011

dsc03699_minamisanriku_japan_200x248

Observed water heights and calculated 
tsunami travel times, 11 March 2011
Minami Sanriku, Japan

Chile Tsunami Event 27 February 2010

Chile Tsunami Event 27 February 2010

dichato_chile_kong_dsc00496_crop_241x200

Observed water heights and calculated
tsunami travel times, 11 March 2011

Dichato, Chile

South Pacific Tsunami Event 29 September 2009

29 September 2009 South Pacific Tsunami Event

tsunami-american_samoa_022_crop_232x200

Observed water heights and calculated
tsunami travel times, 29 Sept 2009
Pago Pago harbor, American Samoa

 


 

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