Friday Eruption Update for September 23, 2011: Cleveland, El Hierro, Etna and more
I write the Eruptions blog on Big Think. I've been mesmerized with volcanoes (and geology) all my life. It helps that part of my family comes from the shadow of Nevado del Ruiz in Colombia, where I could see first hand the deadly effects of volcanic eruptions. Since then, I've taken a bit of a winding path to become a volcanologist. I started as a history major at Williams College, almost went into radio, but ended up migrating to geology, including an undergraduate thesis on Vinalhaven Island, Maine. I followed this up by changing coast to get my Ph.D. from Oregon State University. Then I ran a MC-ICP-MS lab at University of Washington for a spell (and wrote for an indie rock website). I spent three years as a postdoctoral scholar at University of California - Davis studying the inner workings of magmatic systems. I am now an assistant professor at Denison University and have projects in New Zealand, Chile and Oregon.
I am fascinated by volcanoes, their eruptions and how those eruptions interact with the people who live around the volcanoes. I started this blog after getting frustrated with the news reports of volcanic eruptions. Most of them get the information wrong and/or are just sensationalistic. I will try to summarize eruptions as they occur, translate some of the volcanic processes that are happening and comment on the reports themselves.
And no matter what people tell you, I definitely do not have a cat named Tephra. (OK, I do).
You can find out more about my research by visiting my website. If you have any comments, questions or information, feel free to contact me at eruptionsblog at gmail dot com.
Quick update for late on Friday - much more to say on Monday. I promise. Really.
Anyway, some brief news:
Alaska: The dome is continuing to grow at Cleveland in Alaska - and we now have some images of the dome growing in the crater (see top left). Right now the concern is what happens if/when the dome grows large enough to spill out the crater. The likely result is the generation of block-and-ash flows as the dome collapses gravitationally. If that happens, there might be more explosive eruptions that accompany the collapse as the pressure is released on the vent. Needless to say, AVO is keeping a close watch on the growth of the dome.
Global Volcanism Program: If you really want to catch up on this week's volcano news, be sure to check out the new USGS/Smithsonian GVP Weekly Volcanic Activity. It does have updates from places like Bezymianny, Sakurajima and Fuego.
Canary Islands: The local authorities at El Hierro have raised the alert status to yellow based on increased seismicity - both in terms of number of earthquakes and intensity, some earthquakes as large as M3. This new level of alert (spanish) means that the government of the island will release regular updates on the activity and make sure that appropriate emergency measures are in place.
Odds and ends: Looks like there has been a lot of activity at Pu`u O`o on Kilaeau this week - check out Hawaii 24/7's update on all the activity that has images and video. Etna also experienced another paroxysm on Monday - the 14th of the year - and INGV has some information on it. Finally, although the alert status at Taal might have been lowered, there is still some low level seismicity at the Philippine caldera as well, but much like Mayon and Bulusan, none of the earthquakes seem to suggest eruptions are imminent.
A federal judge ruled that the Trump administration likely violated the reporter's Fifth Amendment rights when it stripped his press credentials earlier this month.
- Acosta will be allowed to return to the White House on Friday.
- The judge described the ruling as narrow, and didn't rule one way or the other on violations of the First Amendment.
- The case is still open, and the administration may choose to appeal the ruling.
Progressive America would be half as big, but twice as populated as its conservative twin.
- America's two political tribes have consolidated into 'red' and 'blue' nations, with seemingly irreconcilable differences.
- Perhaps the best way to stop the infighting is to go for a divorce and give the two nations a country each
- Based on the UN's partition plan for Israel/Palestine, this proposal provides territorial contiguity and sea access to both 'red' and 'blue' America
New research identifies an unexpected source for some of earth's water.
- A lot of Earth's water is asteroidal in origin, but some of it may come from dissolved solar nebula gas.
- Our planet hides majority of its water inside: two oceans in the mantle and 4–5 in the core.
- New reason to suspect that water is abundant throughout the universe.
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