Anak Krakatau
eklemetti | November 5, 2009The latest of volcano news from around the world, brought to you by the USGS and Smithsonian Institute Global Volcanism Program (and especially Sally Kuhn Sennert!)
Highlights this week include:
Karangetang in Indonesia produced a couple 3 km/10,000 foot steam-and-ash plumes according to reports from pilots.
Soufriere Hills on the island on Montserrat has had quite a few pyroclastic flows over the last few weeks since the volcano started erupting again. Mix that with some heavy rainfall and lahars were produced as well.
The alert level is still at Orange at Karymsky in Kamchatka, which…
eklemetti | July 17, 2009Some of the articles you might have missed this week ...
A lava flow from Kilauea breaks local traffic laws in the Royal Gardens subdivision, Hawai'i
The Mayon Watch continues in the Philippines. No eruption yet, but some of the local newspapers are printing stories talking about "odd animal behavior" and other local "myths" about predicting the volcano, such as the wells drying up. Now, this is not to say that these things might have some predictive value (especially changes in the water table near the volcano as it inflates/deflates), but so far there are no robust scientific studies that…
eklemetti | July 13, 2009
Anak Krakatau erupting as seen from Rataka Island. Image taken by Marco Fulle of Stromboli Online.
I frequent the Astronomy Picture of the Day website run by NASA on a daily basis. Yet somehow today I didn't check the site until well into the evening and was greeted by one of the best astronomy-volcano images I've seen in a while. Marco Fulle of Stromboli Online captured this image of Anak Krakatau erupting (in 2008 or 2009 ... its unclear in the caption) with Ursa Major rising over the volcano. There have been quite a few volcano-related images on APOD, but alas, they don't have a "volcano…
eklemetti | July 8, 2009All the volcano news that is fit to print, all thanks to the USGS/Smithsonian GVP!
Highlights (not include Manda Hararo, Kilauea and Mayon) include
San Miguel in El Salvador has been experiencing increased seismicity. The last time the volcano erupted was in 2002.
A pilot spotted a ~10,000 foot / 3 km ash plume emanating from Anak Krakatau in Indonesia.
Another ash plume, this time at Ubinas, Peru, was spotted by pilots rising to ~6.7-9.1 km / 20-30,000 feet.
Explosions were heard from Suwanose-jima in Japan, but no associated ash plumes were spotted.
It sounds like a lava dome has been…
eklemetti | June 23, 2009A few quick news bits ... and thanks for the questions so far. Keep 'em coming!
Tungurahua, Ecuador erupting in 2006.
Ash fall from Tungurahua (in spanish) in Ecuador is affecting the farm towns around the volcano. Farmers in Manzano, a village nearby, fear the ash is significant enough to damage their crops. The volcano itself is throwing incandescent bombs near the vent along with producing copious ash.
There is a nice piece in the News Tribune about how Alaska Airlines handled the eruption of Mt. Redoubt near Anchorage this March. It is nice to get some insight into how airlines deal…
eklemetti | June 14, 2009I won't try to recap all the news from last week, but I did notice a few articles from this weekend worth noting:
The Big Obsidian Flow at Newberry Volcano. This rhyolite lava flow erupted at ~1,300 years ago.
Geologists in Greece are keeping an eye on a submarine volcano called Columbus. Apparently a number of M4+ earthquakes have been reported, the sea floor has deformed and there have been "hot air eruption" (? ... I am a little skeptical of the last one without more details). The article is a little fuzzy on the details: the volcano is 6.5 meters southeast of Santorini and the Santorini…
eklemetti | June 3, 2009We've already talked about how many active volcanoes reside in Indonesia, but this week's USGS/SI update just drives that point home. Listed in the update are no less than 5 volcanoes were activity is being seen or is on the increase (Karangetang, Slamet, Dukono, Batu Tara and Makian). This doesn't mean mention the activity at Anak Krakatau, Rinjani or Semeru. Amazing.
Anyway, highlights - not counting Indonesia or the South American trio - from this week's report (as usual aptly put together by Sally Kuhn Sennert) include:
A ~8,000 foot / 2.4 km ash and steam plume from Bagana in Papua New…
eklemetti | May 28, 2009Here's some news bits for all you volcanophiles. Enjoy the weekend!
Ubinas in Peru steaming away in June 2007. Image courtesy of Eruptions reader Mike Lyvers.
There has been a lot of press lately on the theory that a large eruption from an ancient volcanic field in China (the 260-million-year-old Emeishan volcanic province of southwest China) could be the culprit in the grand Permian extinction. I have to admit, I've only skimmed the surface of this study, but the work lead by Dr. Paul Wignall (a paleontologist, not a volcanologist - not that there is anything wrong with that) seems to…
eklemetti | May 7, 2009
Anak Krakatau in Indonesia.
Eruptive activity is definitely on the uptick at Anak Krakatau. The Jakarta Globe is reporting that the volcano is "spewing molten lava 1000 meters in the air". I'm not entirely sure if that is accurate or that the volcano is throwing volcanic bombs or tephra that high. The head of the Volcanology and Geological Disaster Mitigation Center in Indonesia, merely referred to as Surono in the article (are we playing Brazilian soccer?), says that the volcano is "a high threat because the eruptions have started spreading." Again, I'm not too sure what that means, whether…
eklemetti | May 6, 2009All the eruptions fit to print from the Smithsonsian/USGS GVP Weekly Report.
A few highlights (not including Redoubt, Rinjani and Slamet):
Multiple ash plumes from Galeras (Colombia), some producing noticeable ash fall up to 35 km from the vent.
The Alert Level at Anak Krakatau, Indonesia was raised to 3 (out of 4) after a sharp increase in the number of explosions.
The Alert Level at Cleveland in Alaska was lowered from Yellow to "Unassigned" (no Green for Cleveland as there is no real-time seismic network for the volcano, thus no "background levels" to compare.)
Ebeko in Russia continues…
eklemetti | May 3, 2009
Mt. Barujari erupting in 1994. Image courtesy of Vulkaner.no.
Sometimes it is hard to appreciate how many volcanoes lie within Indonesia. However, within the last few weeks, no less than four Indonesian volcanoes have been put on alert to eruption or shown increased signs of activity - Slamet, Kirinci, Anak Krakatau and now Mt. Rinjani (above).
UPDATE 5/3/2009 11AM (Pacific): The volcano is erupting according to the Jakarta Globe. Seems like the activity so far is confined to small explosions emitting ash and gases. More info as I find it.
Rinjani is a popular tourist destination on the…
eklemetti | April 20, 2009
Anak Krakatau erupting in 2007.
There is a report out tonight that activity might be increasing at Anak Krakatau in Indonesia, however, it is unclear whether it is actually increasing or not. People are evacuating the coastal area of the Sunda Strait to Bandarlampung in fear that a major eruption of the volcano is on the horizon. However, the Volcanology and Geological Disaster Mitigation Center (PVMBG) in Indonesia has not changed the alert status at Anak Krakatau and it remains at 2 of 4 (~Orange Status). The volcano has been erupting almost constantly for the last few years, producing…
eklemetti | April 1, 2009For those of you looking for real volcanic eruption news (no, there was no "Yellowstone eruption"), here is this week's SI/USGS Volcano Activity Report.
And speaking of April Fools Jokes, this is by far my favorite (mostly by its combination of volcanoes and baseball. How could you go wrong with two of my favorite things - hat tip to Fletcher for finding the article).
Highlights (beyond Redoubt) include:
Earthquakes, tremors and steam at El Reventador in Ecuador
12,000-15,000 foot (4-5 km) steam/ash plumes were spotted at Colima, the Mexican volcano.
A shockwave was felt 10 km away from…
eklemetti | July 4, 2008[wp_caption id="" align="alignnone" width="400" caption="Anak Krakatau"][/wp_caption]
Indonesia's Volcanology and Geological Disaster Mitigation Center of the Ministry of Energy and Mineral Resources (whew, that is a mouthful) has placed Anak Krakatau on high alert for increased activity. Tourists were warned not to climb on the volcanic island in the Sunda Straits that rises from the remnants of the famous 1883 eruption of Krakatau. Anak Krakatau formed within the caldera of the ancestral volcano and have been fairly active since the 1920's, producing incandescent bombs and small ash…
eklemetti | June 10, 2008
One of the most famous eruptions in human history (at least recent history) is the 1883 eruption of Krakatau in Indonesia, made (more) famous by Simon Winchester's book (and the inappropriately named film Krakatoa: East of Java ... hint: look at a map). Since the cataclysm eruption, a new volcano has risen where the old one once stood. Anak Krakatau (I believe loosely translates to "son of Krakatau") is a fairly active volcano, producing Strombolian explosive eruptions - fairly mild - that threw volcanic bombs and debris onto the island and into the surrounding ocean (thus, building up the…