Scientists search for Caribbean quake clues

By following the flow of seawater deep into the earth's crust, researchers hope to understand the region's instability

Geologically speaking the Caribbean is a lively place. Recent reminders include the 1995 volcanic eruption on Montserrat, and the devastating magnitude 7 earthquake that struck Haiti in January 2010. Occasionally the Caribbean produces even more powerful outbursts.

Back in February 1843 the region was shaken by an estimated magnitude 8.3 quake, reducing Pointe-a-Pitre in Guadeloupe to ruins and killing one third (1,500) of its inhabitants. Meanwhile, 2,000 people are thought to have perished in a quake of unspecified magnitude which shook Jamaica in 1692.