Did the Little Ice Age start with a big bang? According to the new study, the Little Ice Age, a period of cooling temperatures that began after the Middle Ages and lasted into the late 19th century was triggered by repeated, explosive volcanism and sustained by a self- perpetuating sea ice-ocean feedback system in the North Atlantic Ocean
After months of pre-eruptive activity, Alaska's Mount Redoubt has erupted 6 times since Sunday night. Telegraphing its eruption with massive shallow earthquake activity in the range of 26 earthquakes every 10 minutes, the volcano, located around 100 miles southwest of Anchorage, spewed an ash column 10km high, and is expected to continue erupting for weeks or months. The last time this massive volcano erupted in 1989 a commercial airliner was caught in the ash column, causing the engines to seize and the plane to lose two miles of altitude before the engines were restarted. That eruption, which lasted for 5 months, produced this spectacular photo. Follow this amazing event at the Alaska Volcano Observatory. [more inside]
Cool video of an undersea volcano erupting off Tonga. Spectacular clouds began spewing out of the sea on Monday about 10km from the southwest coast off the main island of Tongatapu, where up to 36 undersea volcanoes are clustered. More on these volcanism blogs.
"We were forced to evacuate the remotely operated vehicle, 'Jason II,' several times to avoid getting it enveloped in volcanic clouds," said Bill Chadwick, ...one of the authors of the study. "But at other times, we could observe the eruption from only 10 feet away - something you could never do on land. So in some ways, we were able to see processes more clearly at the bottom of the ocean than we ever could on land. That was surprising." From KGW (bugmenot). Podcasts, videos, images, sounds, daily logs, and lots of information can be found on the project's website.