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Sound on!
Hear #Raikoke's roar - Himawari satellite imagery of the June 21#Raikoke#eruption (from@CIMSS_Satellite) with time-synched remote infrasound (from Robin Matoza at@ucsantabarbara) sped-up to be audible to humans.@C_MarieSmith@volcano_diana@CIDER_DeepEarthpic.twitter.com/wdeIZYBkn2Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
More info on
@FlyAirNZ flight diversion:https://www.stuff.co.nz/travel/travel-troubles/119252451/volcanic-eruption-forces-air-nz-flight-from-auckland-to-japan-to-divert-to-guam …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
A sinuous SO2 plume erupted from
#Kuchinoerabujima#volcano, Ryukyu Is,#Japan seen by#Sentinel5P#Tropomi on Feb 3. A@FlyAirNZ flight from Auckland to Tokyo diverted to Guam to avoid any volcanic ash in this cloud. Low-altitude SO2 plume from#Nishinoshima also visible to SE.pic.twitter.com/G1YRjkVgFe
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Great work here by
@ThomasJAubry et al. Glad to see application of our@NASA#volcanic SO2 emissions database. With multiple satellites measuring SO2 and accessible modeling tools, our community is well placed to quickly assess the potential climate impacts of future#eruptions.https://twitter.com/ThomasJAubry/status/1224708281169514496 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
FYI, the Joy Division album cover (below; designed by artist Peter Saville) depicts a stacked plot of radio signals from a pulsar using data collected at the Arecibo Radio Observatory
@NAICobservatory, because science. https://blogs.scientificamerican.com/sa-visual/pop-culture-pulsar-origin-story-of-joy-division-s-unknown-pleasures-album-cover-video/ …pic.twitter.com/x3v7MWF8SC
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#Kamchatka is pretty cool too. You can even print your design on mugs and T-shirts!pic.twitter.com/LoUHRQFetK
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Awesome tool by
@anvaka for making 'ridgeline' topographic maps in the style of Joy Division's iconic Unknown Pleasures album cover: https://anvaka.github.io/peak-map/ Here's#Java,#Indonesia - it's fun to identify all the#volcanoes. A simple yet compelling way to visualize topography.pic.twitter.com/wEmIh16WRy
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Is this the opposite of brain freeze?https://twitter.com/claire_horwell/status/1220340544196554752 …
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Updated
@planetlabs animation with new image of#Taal collected on Jan 22 (note the resuspended#volcanic ash). I also outlined the pre-eruption Taal crater lake and Vulcan Point for reference.pic.twitter.com/ZIhrX1xMM4Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
The resuspended ash plume from
#Taal is also clearly visible in this@NASA Terra/MODIS image on Jan 22. Easy to see how such plumes can be mistaken for eruptions.@NASAEarth#NASAWorldViewpic.twitter.com/L5dkwGDD5m
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Great view of
#Taal on Jan 22 from the@Space_Station. As reported by@phivolcs_dost, the source of the ash plume emanating from the#volcano is resuspension of previously deposited ash, not new volcanic activity. Such ash can still be a hazard to downwind communities & aviation.https://twitter.com/Astro_Christina/status/1219997453899964416 …
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Check here for daily
#TropOMI maps of SO2 emissions from volcanoes in the#Philippines: https://so2.gsfc.nasa.gov/pix/daily/0120/philip_0120tr.html …@CopernicusEMS@BIRA_IASB@NASAGoddard#TaalVolcano2020#TaalVolcanoEruption#TaalEruptionPrikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
It's a weak signal, but
#Sentinel5P#TropOMI has detected continued SO2 emissions from#Taal after dispersal of the Jan 12-13#eruption cloud, as reported by@phivolcs_dost. Indicates likely presence of magma at shallow depths. Follow@phivolcs_dost for official updates & alerts.pic.twitter.com/ucjiOvVllQPrikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Flaking news - high snowfall rates (>1” per hour) in winter storm currently moving over the
#GreatLakes. @NWSMarquettepic.twitter.com/afmPtLSecXHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Several assumptions have been made here, but vaporization of the Taal crater lake during the eruption is certainly within the realm of possibility.
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The mass of magma needed to supply 1.1x10^17 J is ~8x10^10 kg, equivalent to a volume of ~0.02 km3. This corresponds to a Volcanic Explosivity Index (VEI) of ~3, which is probably a reasonable estimate of magnitude for the Jan 12-13
#TaalVolcanoEruption.Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Now, how much magma could supply this amount of heat? Assume basaltic magma with an initial temperature of 1200ºC that cools to ambient temperature (~20ºC) during eruption. Energy = Mass of magma (TBD) x temperature change (1180 K) x specific heat of magma (1484 J/kg/K)
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First, heat the lake water to boiling point from 30ºC: Mass of water (~4.3x10^10 kg) x temperature change (70 K) x specific heat of water (4186 J/kg/K) Then vaporize it: Mass of water x Latent heat of vaporization of water (2260 kJ/kg) Total: 1.1x10^17 Joules.
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In the following calculations I’m using
#Taal crater lake volume and temperature data from this@ULBSciences study of the lake conducted in 2011: https://www2.ulb.ac.be/sciences/cvl/taal/Taal.html …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
#Taal's main crater lake is (mostly) gone, but was it vaporized? Here's a quick 'back of the envelope' calculation to estimate the energy required and test that theory. We need to heat the lake water to boiling point and then vaporize it (ignoring any heating of the vapor).Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
And here's a wider (partly cloudy) view of
#Taal's Volcano Island showing the volcanic ash deposits.pic.twitter.com/TOHc3MUnwUPrikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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