UW News

Evan Solomon

April 10, 2023

Warm liquid spewing from Oregon seafloor comes from Cascadia fault, could offer clues to earthquake hazards

green seafloor with five bubble columns

UW oceanographers discovered warm, chemically distinct liquid shooting up from the seafloor about 50 miles off Newport. They named the unique underwater spring “Pythia’s Oasis.” Observations suggest the spring is sourced from water 2.5 miles beneath the seafloor at the plate boundary, regulating stress on the offshore subduction zone fault.

December 9, 2014

Warmer Pacific Ocean could release millions of tons of seafloor methane

graphic of bubbles

Water off Washington’s coast is warming a third of a mile down, where seafloor methane shifts from a frozen solid to a gas. Calculations suggest ocean warming is already releasing significant methane offshore of Alaska to California.