
Credit: Princeton University
Scientists have identified a huge magma plume under the Galapagos archipelago using an array of floating robotic seismometers. In other news, the acronym writers have been working overtime. The robotic seismometers used in study have been named Mobile Earthquake Recording in Marine Areas by Independent Divers, or MERMAIDS.
The EuerkaAlert! reports: The researchers, from institutions in the United States, France, Ecuador and China, found that the volcanoes on Galápagos are fed by a source 1,200 miles (1,900 km) deep, via a narrow conduit that is bringing hot rock to the surface. Such “mantle plumes” were first proposed in 1971 by one of the fathers of plate tectonics, Princeton geophysicist W. Jason Morgan, but they have resisted attempts at detailed seismic imaging because they are found in the oceans, rarely near any seismic stations.
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