Leaving for Death Valley tomorrow - I'll be sure to take some pictures of Ubehebe Crater and the volcano at the Mirage. This will likely be the last new post until about a week from now, but look for the Erta'Ale Volcano Profile, maybe a new Mystery Volcano Photo and I'll leave a thread open for any new volcano news.
Colima in Mexico.
- Eruptions reader Tim Stone sent me this image from Japanese astronaut Soichi Noguchi's Twitpic feed - it is a stunner of the caldera on Jebel Marra in Sudan. The only known historical eruption for this volcano was ~2000 BC within the Deriba Caldera, but it has produced pyroclastic flows that travelled upwards of 30 km from the caldera.
- There are a couple new pictures from Colima in Mexico posted on the Colima Volcano Database. The picture show the growing phases of the dome since 2008 and the new lava flow on western side of the volcano.
- A number of Eruptions readers have mentioned an increase in activity at Costa Rica's Turrialba. OVSICORI said that it appears clear that new magma (spanish) is moving into the volcano based on the current seismicity and gas emissions at the volcano. Turrialba experienced its first phreatic eruption in the last 100 years in January, but new magma has yet to be seen at the summit crater.
- You can always count on great shots of volcanoes on the Kamchatka Peninsula from the NASA Earth Observatory team, and this new image of Klyuchevskaya (Kliuchevskoi). It shows the new dark grey ash from the current eruption on the snow the lines the flanks on the volcano. Some of the recent eruptions of Kliuchevskoi have produced plumes upwards of 6 km / 20,000 feet.
- Before I forget, here is this week's Smithsonian/USGS Weekly Volcano Activity Report.
- And for those of you not following the Eyjafjallajökull (Iceland) earthquake swarm thread, the swarm does continues to march on - the question still is, to what is it leading?
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Have a good time in Death Valley. Don't forget the offset cindercone at the south end of the valley below Jubilee Pass. Hopefully the flowers are blooming by now. They were just starting to sprout when we were there last month.
Volcanism in Dar Fur, Sudan ? If the region ever gets independency from that horrible bloodstained country, they might get electricity from geothermal energy, reducing their dependence of their unfriendly neighbour.
With their luck, they are likely to get a disastrous eruption when the other troubles settle down....
Turrialba may not have surface lava yet but it is getting closer by the day. This one may go before Iceland.
Vigorous degassing and possible small rock slides on the web cam.
http://www.ovsicori.una.ac.cr/videoturri.html
what kind of the name is Eyjafjallajökull
where did they come up with that one the newspaper?
try saying Eyjafjallajökull 3 time fast
Turrialba is already glowing at night - see photo at http://www.ovsicori.una.ac.cr/informes_prensa/2010/turrialba_boletin_te…
I'm excited as I am planning a trip to Costa Rica in May!
@ David (#4) ""what kind of the name is Eyjafjallajökull""
It's Icelandic as is apparent from Dr Klemetti's notes. Eyj is island, fjall mountain and jökull glacier. What kind of comment is yours, genuine or condescending?
@Mike, That's a pretty dirty plume for a degassing volcano.. It's certainly got a lot thicker over the last week or so. What do you think is making it so brown? Heavy SO2 concentration?
I would have thought fine ash particles, and the fact that the light source is directly behind it and low in the sky.
The fact that there is glow at night suggests there is magma near the surface and tiny particles of it may be carried aloft with the plume along with increasing density of gas.
On the other hand, the glow might be due to gas ignition. I've seen this happen at a couple of volcanoes.
The plume has a brown/orange tinge in the day light.
I have done a lot of photography in my day including working for several photographic companies. I would say most if not all of the glow is from the back lit subject and not due too a ground based light source.
Mud Volcanoes from space!
http://earthobservatory.nasa.gov/IOTD/view.php?id=43127
Dasnowskier, I was referring to the nighttime shot, not the daytime backlit one. There is no nighttime light source at Turrialba other than the volcano itself.
The lava pond at Kilauea is back on camera tonight.
http://volcanoes.usgs.gov/hvo/cams/HMcam/
Don't forget DST...
@mike . When I looked at the web cam at night I saw no glow. There may have been one just not when I looked.
I would love to see a glow. I agree there is no night time light source except the town in the valley and that a very dim.
The link I posted above has a photo of the glow:
http://www.ovsicori.una.ac.cr/informes_prensa/2010/turrialba_boletin_te…
Go to the bottom of the last page, where there is a reference to incandescence in the crater (in Espanol).
Mike,
oooo, yup the pic at the bottom definitely has "glow", and you can see the light from the village in the background.
Thanks Mike.
The Costa Rican volcanologists describe the pic as showing incandescence in the crater, not as reflected glow from a background village. If they have misinterpreted their own photo that would be pretty surprising!
Glow does not show up on the webcam but a time exposure would be more sensitive and I assume that is what the posted pic is.
That is a very good time exposure. I did not mean to imply it was a reflection from the village.
Lava must be at the surface.
I don't know yet whether the crater glow is from fresh magma or from high-temperature fumaroles heating the surrounding rock..but either way, Turrialba is definitely heating up.
when was the last eruption
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