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https://mobile.twitter.com/FirstNameLast/status/1482259505710874628 https://mobile.twitter.com/FirstNameLast/status/1482259505... I am no expert but this lo

by janmo 5y ago

https://mobile.twitter.com/FirstName__Last/status/1482259505710874628 https://mobile.twitter.com/FirstName__Last/status/1482259505... I am no expert but this looks huge, perhaps something the size of the Krakatoa eruption. https://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa https://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa

kingofpandora 5y ago
What are you basing your comparison of the two on I wonder?
divbzero 5y ago
The terminator in this video provides a good sense of time elapsed.
- xarball 5y ago
  Wow I'd never have known the line between day and night ever had a name, before you used that word! :)
  - tialaramex 5y ago
    In some alternate universe 1984's "The Terminator" is a movie with a similar plot to "Pitch Black" in our universe (yes I know it's an eclipse in "Pitch Black").
    - dylan604 5y ago
      The Ecliptic Terminator - "I'll be back!"
  - Andrew_nenakhov 5y ago
    And you can be pretty sure it will be back, inevitably.
miedpo 5y ago
Much smaller than Krakatoa so far. We'll have to see where it comes out on the VEI scale though. Krakatoa was really big, so I think it's pretty unlikely we will get close to that on this one. The Tsunami they are guessing probably came from an earthquake or underwater landslide caused by the eruption, but the eruption doesn't really need to be huge to cause those. It'll be interesting to see once the eruption stops (if it's a landslide, you can usually see a crescent shaped formation on the volcano, although it may be underwater).
thematrixturtle 5y ago
That seems unlikely, since the magnitude was only 4.0. The relation between magnitude and actual impact is complex, but big ones tend to be 6+ and really big ones 8 or even 9.
- cmurf 5y ago
  What is the magnitude scale for volcanoes vs earthquakes? The tsnumai.gov site says this is magnitude 1.0 but without units or type. So I wonder if it's a tsunami potential specific scale?
  - alexander-litty 5y ago
    I think the 1.0 magnitude is there as a placeholder. The advisories say to ignore it: >Please disregard earthquake parameters
- easygenes 5y ago
  The current magnitude estimate from the USGS is 5.8, with the caveat that, "...this event is calculated using techniques calibrated for earthquakes. The current magnitude is only a preliminary estimate for this volcanic event." [1] 1: https://earthquake.usgs.gov/earthquakes/eventpage/pt22015050/executive
yesenadam 5y ago
From the Krakatoa page: "The third explosion has been reported as the loudest sound heard in historic times. The loudness of the blast heard 160 km (100 mi) from the volcano has been calculated to have been 180 dB. Each explosion was accompanied by tsunamis estimated to have been over 30 metres (98 feet) high in places. ...The energy released from the explosion has been estimated to be equal to about 200 megatonnes of TNT, roughly four times as powerful as the Tsar Bomba"

https://mobile.twitter.com/FirstName__Last/status/1482259505710874628 https://mobile.twitter.com/FirstName__Last/status/1482259505... I am no expert but this lo

by janmo 5y ago

kingofpandora 5y ago

What are you basing your comparison of the two on I wonder?

divbzero 5y ago

The terminator in this video provides a good sense of time elapsed.

xarball 5y ago
Wow I'd never have known the line between day and night ever had a name, before you used that word! :)
- tialaramex 5y ago
  In some alternate universe 1984's "The Terminator" is a movie with a similar plot to "Pitch Black" in our universe (yes I know it's an eclipse in "Pitch Black").
  - dylan604 5y ago
    The Ecliptic Terminator - "I'll be back!"
- Andrew_nenakhov 5y ago
  And you can be pretty sure it will be back, inevitably.

miedpo 5y ago

Much smaller than Krakatoa so far. We'll have to see where it comes out on the VEI scale though. Krakatoa was really big, so I think it's pretty unlikely we will get close to that on this one. The Tsunami they are guessing probably came from an earthquake or underwater landslide caused by the eruption, but the eruption doesn't really need to be huge to cause those. It'll be interesting to see once the eruption stops (if it's a landslide, you can usually see a crescent shaped formation on the volcano, although it may be underwater).

thematrixturtle 5y ago

That seems unlikely, since the magnitude was only 4.0. The relation between magnitude and actual impact is complex, but big ones tend to be 6+ and really big ones 8 or even 9.

cmurf 5y ago
What is the magnitude scale for volcanoes vs earthquakes? The tsnumai.gov site says this is magnitude 1.0 but without units or type. So I wonder if it's a tsunami potential specific scale?
- alexander-litty 5y ago
  I think the 1.0 magnitude is there as a placeholder. The advisories say to ignore it: >Please disregard earthquake parameters
easygenes 5y ago
The current magnitude estimate from the USGS is 5.8, with the caveat that, "...this event is calculated using techniques calibrated for earthquakes. The current magnitude is only a preliminary estimate for this volcanic event." [1] 1: https://earthquake.usgs.gov/earthquakes/eventpage/pt22015050/executive

yesenadam 5y ago

From the Krakatoa page: "The third explosion has been reported as the loudest sound heard in historic times. The loudness of the blast heard 160 km (100 mi) from the volcano has been calculated to have been 180 dB. Each explosion was accompanied by tsunamis estimated to have been over 30 metres (98 feet) high in places. ...The energy released from the explosion has been estimated to be equal to about 200 megatonnes of TNT, roughly four times as powerful as the Tsar Bomba"