NASA Images from Etna and Kliuchevskoi (and more)

Yes, a rare Sunday post, mostly because I'm not sure I'll have a time tomorrow morning for a post as it will be the first day of the new semester at Denison ~ I'm sure I will have students breaking down my door with questions/requests/demands and all the great stuff that comes with the start of the semester. Actually, the start of the semester isn't that bad, it does mean work will be picking up again, but at least you enter with a bunch of new students.


Today's post centers on two new images posted by the NASA Earth Observatory.

The first is from last week's eruption at Mt. Etna. The MODIS on Terra captured a shot of the white/light grey plume from Etna streaming off to the east. If you click on the main image to the larger image from the eruption, one thing that struck me is just how big Etna is relative to the island of Sicily - at least from what I can estimate from the discoloration around the snow-capped peak. I mean, it is no Mauna Loa in terms of relative size, but it is a large volcano. You can check out a great gallery of images from the eruption at Etnaweb and National Geographic also posted a gallery of images from the mid-week eruption. The latest from INGV Catania suggests that things are pretty calm at the crater pit, but you can always check out the webcam for yourself.

The other image comes from around the planet in the ever-active Kamchatka Peninsula. This ALI image from EO-1 shows the summit region of Kliuchevskoi (as known as Klyuchevskaya - Russian volcanoes tend to have multiple names it seems). You can see the weak steam-and-ash plume drifting off to the northwest along with a small lava flow on the eastern flank of the volcano. Again, clicking through to the larger image, you get stunning snow-covered image of the volcano plus its neighbors like Bezymianny with its breached crater to the south and Zimina directly south of Bezymianny, Tolbachik to the southwest with the flat, snow-filled caldera and finally Udina further south in the image. Just that image alone can give you an idea of the scale of volcano activity on the peninsula. There is a webcam for Kliuchevskoi (along with Bezymianny and Shiveluch), so you too can watch all the Russian action from home.

And some more non-satellite related news in brief:

  • Turriabla erupted over the weekend, producing some minor ash and volcanic gas emissions based on reports from Costa Rica. OVSICORI, the monitoring body in Costa Rica, has closed the national park surrounding Turrialba as a precaution. Check out the volcano's webcam here.
  • PHIVOLCS released a new briefing about the activity at Taal, Bulusan and Mayon in the Philippines. All three volcanoes are showing varying signs of unrest, but none appear to be very close to a large eruptive event.
  • Although it is likely unrelated to magmatic movement, the webicorder trace over at New Zealand's Ngauruhoe is a little noisy for its normal look. Any local New Zealanders have any more info about what might be causing this trace? You can see the vista around the volcano on its webcam.
  • That is it for now ... enjoy the rest of the weekend and I'll see you in the spring semester!

    {Hat tip to all the links provided by Eruptions readers in this post.}

    Top left: Ngauruhoe in New Zealand in a January 2009 image by Erik Klemetti. The younger, dark basaltic andesite lava flows are clearly seen on the volcano's slopes. Ngauruhoe last erupted in 1977. Click on image to see a larger version.

    Related Articles

    Scientists discover what caused the worst mass extinction ever

    How a cataclysm worse than what killed the dinosaurs destroyed 90 percent of all life on Earth.

    Credit: Ron Miller
    Surprising Science

    While the demise of the dinosaurs gets more attention as far as mass extinctions go, an even more disastrous event called "the Great Dying” or the “End-Permian Extinction” happened on Earth prior to that. Now scientists discovered how this cataclysm, which took place about 250 million years ago, managed to kill off more than 90 percent of all life on the planet.

    Keep reading Show less

    Why we're so self-critical of ourselves after meeting someone new

    A new study discovers the “liking gap” — the difference between how we view others we’re meeting for the first time, and the way we think they’re seeing us.

    New acquaintances probably like you more than you think. (Photo by Simone Joyner/Getty Images)
    Surprising Science

    We tend to be defensive socially. When we meet new people, we’re often concerned with how we’re coming off. Our anxiety causes us to be so concerned with the impression we’re creating that we fail to notice that the same is true of the other person as well. A new study led by Erica J. Boothby, published on September 5 in Psychological Science, reveals how people tend to like us more in first encounters than we’d ever suspect.

    Keep reading Show less

    NASA launches ICESat-2 into orbit to track ice changes in Antarctica and Greenland

    Using advanced laser technology, scientists at NASA will track global changes in ice with greater accuracy.

    Firing three pairs of laser beams 10,000 times per second, the ICESat-2 satellite will measure how long it takes for faint reflections to bounce back from ground and sea ice, allowing scientists to measure the thickness, elevation and extent of global ice
    popular

    Leaving from Vandenberg Air Force base in California this coming Saturday, at 8:46 a.m. ET, the Ice, Cloud, and Land Elevation Satellite-2 — or, the "ICESat-2" — is perched atop a United Launch Alliance Delta II rocket, and when it assumes its orbit, it will study ice layers at Earth's poles, using its only payload, the Advance Topographic Laser Altimeter System (ATLAS).

    Keep reading Show less