U.S., International Tsunami Efforts Continue in Indian Ocean

U.S., International Tsunami Efforts Continue in Indian Ocean. By Cheryl Pellerin
Despite difficulty of creating early warning centers, progress is being made
america.gov, Feb 27, 2009

Washington — Four years after the deadliest tsunami in recorded history took the lives of 227,898 people and displaced 1.7 million, the coastal nations of the Indian Ocean, with help from the United States and other countries, have created a small margin of safety for themselves against a future onslaught by the sea.

The tragedy mobilized international experts and funding for a years-long effort to bolster and, in some cases, create a regional capacity to monitor lands and waters, analyze seismic and tidal data, warn populations about tsunami-producing earthquakes, and establish standard procedures for quickly moving people out of harm’s way.

Initial efforts targeted the eastern Indian Ocean, where parts of Indonesia, Sri Lanka, Thailand and India bore the brunt of the 2004 earthquake and tsunami.

More recent efforts — by representatives of the International Tsunami Information Center (ITIC), the U.S. National Oceanic and Atmospheric Administration (NOAA), the U.S. Geological Survey (USGS) and the UNESCO Intergovernmental Oceanographic Commission (IOC) — have focused on early warning and preparedness activities in the island nation of Mauritius and the Republic of Mozambique in the western Indian Ocean.


SAVING LIVES

The day after Christmas in 2004, below an underwater canyon called the Sunda Trench that lies offshore of the Indonesia archipelago, one massive tectonic plate explosively displaced another, producing a 9.0-magnitude earthquake and a tsunami that affected 14 countries in South Asia and East Africa.

Lives could have been saved if each nation had had an end-to-end early warning system that included hazard warnings and preparedness, ocean observations, data management, forecasting and warning dissemination.

But on December 26, 2004, such a system existed only in the Pacific Ocean, where most of the world’s tsunamis occur. The Pacific Tsunami Warning Center (PTWC) in Hawaii, part of NOAA’s National Weather Service, was established in 1949 to provide warnings about tsunamis and other hazards.

In 1968 the center became the operational headquarters of the IOC’s Intergovernmental Coordination Group for the Pacific Tsunami Warning System. Today the PTWC is an interim warning center for the Indian Ocean — in cooperation with the Japan Meteorological Agency — until warning systems there are complete.

In 2005, IOC took the lead in coordinating international activities to establish a tsunami warning system in the Indian Ocean. The U.S. Indian Ocean Tsunami Warning System Program supported the IOC through a three-year, $16.6 million, multi-agency effort that has led to significant improvements in early warning capability in the region.


MARGIN OF SAFETY

U.S. contributions to the Indian Ocean’s regional warning system have involved upgrading the seismic network, deploying two deep-ocean tsunami-detection buoys called tsunameters (one each in Thailand and Indonesia), increasing the capacity in five countries to analyze data and issue warnings, and improving local community preparedness.

In the region, David McKinnie, NOAA’s international tsunami coordinator, told America.gov, “We’ve gone from no country with a national warning center to many countries with the ability to issue national warnings.”

The U.S. program also:

• Supplied capacity-building, technical support and training for national warning center operations, emergency communications and rapid alert systems in four countries.
• Installed, deployed or upgraded 18 national tsunami-detection and communication system components and built capacity in earthquake detection, hazard mapping and warning processes.
• Trained 195 government agencies, included 399 communities in national alert systems, and provided community-level preparedness training for more than 20,000 people.
• Upgraded or installed six coastal sea-level observation stations and five seismic stations, and upgraded connections to the global telecommunications system and trained users in Sri Lanka and the Maldives in partnership with the World Meteorological Organization.

“Given the difficulty of establishing a set of regional and national tsunami warning centers to deploy new networks of instruments and take on the challenge of last-mile communications and local preparedness — given the enormity of that challenge, progress has been satisfactory,” McKinney said.

“There’s much more to be done,” he added, “just as there’s much more to be done in the United States.”


MAURITIUS AND MOZAMBIQUE

Countries on the western side of the Indian Ocean were less damaged by the 2004 tsunami but still face risks from earthquakes and tsunamis. In February 2006, for example, a 7.0 magnitude struck 215 kilometers (133 miles) southwest of Beira, Mozambique, killing four people and injuring 27.

To address this need, the U.S. State Department funded an effort in 2007 to upgrade earthquake and tsunami warning systems in Mauritius and Mozambique. Involved in the work were experts from the Hawaii-based ITIC, established in 1965 by the IOC; NOAA’s National Weather Service; IOC and USGS.

“Our effort in Mauritius was to try to identify where they needed the most help,” ITIC Director Laura Kong told America.gov.

In the small island nation, the meteorological service doubles as the tsunami warning center. ITIC provided software and training in earthquake monitoring and seismology. During a visit in April, Paul Whitmore, director of NOAA’s Alaska Tsunami Warning Center, installed EarlyBird, a tsunami monitoring system used at his center.

In the nation of Mozambique — which has a meteorological service, a geological survey, a small seismology network and a water-level agency — Kong and her partners installed two pieces of earthquake-monitoring software and a sea-level-monitoring software called Tide Tool.

“Mozambique is more susceptible to tsunamis, and the good news is they’re building the capacity,” USGS research seismologist Walter Mooney told America.gov. “They’re installing six [seismic] stations and trying to put them on radio transmission so they all get broadcast back to the central office in real time.”

ITIC and NOAA have given both countries a range of printed tsunami-preparedness material that the countries can translate and use for training and to increase community awareness.

More information about the Pacific Tsunami Warning Center is available at the NOAA Web site.

More information about UNESCO/IOC global tsunami warning system coordination is available at the organization’s Web site.

An animation of the 2004 Indian Ocean tsunami is available at the Web site of Japan’s National Institute of Advanced Industrial Science & Technology.