A little over one year ago, we reported on that University of Washington research vessel’s work off Alki Point, studying methane bubbles seeping from the Seattle Fault. UW oceanography professor Paul Johnson explained the project involving the R/V Rachel Carson, years of work that could someday help predict earthquakes, among other things. He also shared this undersea video showing the bubbles:
This week, the UW announced that research for which Professor Carson was lead author has been published in the January issue of Geochemistry, Geophysics, Geosystems. The UW post also talks about some of what’s happened since our report, and what’s next:
… In follow-up work, scientists used underwater microphones this fall to eavesdrop on the bubbles. Shima Abadi, an associate professor at the University of Washington Bothell, is analyzing the sound that bubbles make when they are emitted. The team also hopes to go back to Alki Point with a remotely operated vehicle that could place instruments inside a vent hole to fully analyze the emerging fluid and gas. …
The area off Alki Point is not the only methane-bubble site they’re studying – others in the region include an area off Kingston. Among the mysteries they have yet to solve is the source of the methane.