In the wake of Katrina, I found these older items.

“Plans were announced today to expand the U.S. tsunami detection and warning capabilities as a contribution of the Global Earth Observation System of Systems, or GEOSS—the international effort to develop a comprehensive, sustained and integrated Earth observation system. The plan commits a total of $37.5 million over the next two years.”

http://www.noaanews.noaa.gov/stories2005/s2369.htm

The above announcement followed by a day UNESCO’s announcement of a global system that includes more than U.S. participation. Upon questioning, Bush Administration officials said GEOSS was “compatible” with UNESCO’s approach, but their concern seemed limited to American victims of the tsunami.

“UNESCO is working towards the establishment of a global tsunami warning system that would be operational by June 2007, said UNESCO Director-General Koichiro Matsuura. Speaking at a press conference at the Mauritius International Meeting on Small Island Developing States on Wednesday, Mr Matsuura said that assessment missions are already being undertaken to concerned countries as a step towards the creation of the first regional component of the global system, in the Indian Ocean, foreseen for June 2006.”

http://portal.unesco.org/en/ev.php-URL_ID=24502&URL_DO=DO_TOPIC&URL_SECTION=201.html