relation to the Sumatran Quake it is interesting to note its proximity
to huge underwater gas hydrate deposits which could contain Methane
57% of the world's
600 active volcanoes form islands or occupy coastal sites, while
38% are located within 250 kilometers of the coast. They could all
be susceptible to the changes in the stress on the crust that will
come with the rising sea-level if runaway thawing of the polar ice
sheets really begins. This will lead to an increase in continental
margin earthquakes, which are more likely to trigger sea-floor landslides.
These sea-floor landslides are the very thing that could trigger
the release of Methane Hydrate. Gas hydrates have been identified
around the margins of all the ocean basins.