Maldives set to test adapting to higher seas

updated 12:49 p.m. ET May 18, 2009

MAAYA THILA, Maldives - Since climate change fears first gripped the globe, tourists have flocked to the Maldives to enjoy the islands' spectacular vistas before they vanish.

Do they really need to rush?

Scientists have long warned that the Maldives, an archipelago nation of nearly 1,200 islands in the Indian Ocean, will be wiped out by rising sea levels in the coming decades. President Mohamed Nasheed is so convinced of his nation's demise he has proposed relocating all 350,000 inhabitants to other countries. On average, the islands are 7 feet above sea level, making them the lowest-lying nation on Earth.

Most experts agree the Maldives have plenty to worry about: In the worst-case scenario, if global sea levels rise higher and faster than expected, the islands may indeed be swallowed up.

But some recent data challenge the widespread belief that the islands are destined to disappear — and a few mainstream scientists are even cautiously optimistic about their chances for surviving relatively intact beyond the next century.

"The outlook for the Maldives is not all doom and gloom," said Paul Kench of the University of Auckland in New Zealand. "The islands won't be the same, but they will still be there."

Kench said his studies of the Maldives show the islands can adjust their shape in response to environmental changes, such as the rising seas and warmer temperatures predicted in the next century.

Kench suggests the islands might move onto their reefs and build vertically, offsetting the potential threat of sea level rises. His research — published together with other scientists from Australia, New Zealand and the Maldives — shows some islands have rebuilt themselves as much as 1.6 feet higher. Their studies have been published in recent years in journals including Geology and the Journal of Geophysical Research.

"It's quite convincing work and seems to be quite widely accepted by the scientific community," said Andrew Cooper, a professor of coastal studies at the University of Ulster in Northern Ireland.

"They have detailed geological evidence that this kind of growth has happened before in the past. ... I think the question of the Maldives being completely wiped out may be overstated."

Following the devastating 2004 Asian tsunami, many scientists assumed the Maldives would be damaged. But Kench and his colleagues not only found little evidence of island erosion, but also that the tsunami had washed sediment ashore, making some islands taller than they were before the catastrophe.

Most populated isles in trouble
Kench warned, however, that while only a small number of Maldivian islands may not be able to adapt to rising sea levels, those are unfortunately the ones where many people live: Male, the nation's capital, and Hulule. Residents of those islands will probably need to relocate to another country or move to other Maldivian islands that won't disappear so quickly, he said.

Building taller and moving to higher ground are examples of a hot trend in climate change policy: emphasizing adaptation.

While much global warming work aims to limit emissions, adaptation advocates argue for the need to combat the inevitable effects of climate change through forward planning and construction. That includes moving people, building sea walls, and new construction techniques.

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