Understanding the movement of fluids in the Cascadia subduction zone can help researchers pinpoint the risk of earthquakes
Holes spewing warm fluids from the boundary between tectonic plates have been discovered at the bottom of the ocean off the coast of Oregon. Researchers think this strange, never-before-seen phenomenon, dubbed Pythia's Oasis after an ancient Greek priestess, could provide insight into earthquake risk along the dangerous fault — although exactly how it affects the tectonics is unclear.
These vents, each of which measures about 2 inches across, are about 50 miles from the shore. The geochemistry of these fluids reveals that they originate from about 2.5 miles deep, near where the plates meet. Saffer said there is no simple correlation between fluid flow and earthquakes and thus more work will be needed to understand if or how these fluids affect earthquake risk in the Pacific Northwest.
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