Dare I say around 1 megaton event?
Found a video with a full length meteor going through atmosphere to shockwave impact.Meteorite passes by at 4:40 in video.Shockwave impact at 7:01 in video.Thats a dramatic 2m21s in time delay, or 48km away assuming speed of sound at sea level.The angle is also oblique as well, but we should be able to guesstimate the altitude from that.
Quote from: ugordan on 02/15/2013 07:15 pmDare I say around 1 megaton event?Unlikely. Estimates have been ~10 tonnes and 20km/s, that gives 'just' 2TJ, little shy of half kiloton worth of KE.
Unlikely. Estimates have been ~10 tonnes and 20km/s, that gives 'just' 2TJ, little shy of half kiloton worth of KE.
No way was this amount of bang produced by 0.5 KT. NASA are now estimating the diameter at 15 m and mass at about 7000 tons.
Quote from: Eric Hedman on 02/15/2013 06:08 pmLet the hearings begin!How quick and predictable. Talk about how important it all is until the noise of this event dies down.
Let the hearings begin!
I agree with Jorge's latest that it seems unrelated - unless maybe it aerobraked in the southern hemisphere unseen and ended up making half an orbit, like an Apollo/Zond skip reentry
And maybe everybody should just stop and take a few breaths.We could start by putting this in perspective. How many people have died in the past decade from seismic-related events? How much money is being spent to predict those?
Quote from: Blackstar on 02/15/2013 07:56 pmAnd maybe everybody should just stop and take a few breaths.We could start by putting this in perspective. How many people have died in the past decade from seismic-related events? How much money is being spent to predict those?Considering the Italians just put a bunch of seismic scientists on trial for failing to predict a killer earthquake, that may be a poor example.
Quote from: jcm on 02/15/2013 07:29 pmI agree with Jorge's latest that it seems unrelated - unless maybe it aerobraked in the southern hemisphere unseen and ended up making half an orbit, like an Apollo/Zond skip reentryWhich it couldn't do at 18km/second at the second entry, correct?
Quote from: kevin-rf on 02/15/2013 08:00 pmConsidering the Italians just put a bunch of seismic scientists on trial for failing to predict a killer earthquake, that may be a poor example.Convicted, actually, if I recall correctly.
Considering the Italians just put a bunch of seismic scientists on trial for failing to predict a killer earthquake, that may be a poor example.
Quote from: Robotbeat on 02/15/2013 07:10 pmWhat are you doing about it?Nothing. Not a U.S. taxpayer so my opinion is inconsequential for all practical purposes.
What are you doing about it?
Quote from: R7 on 02/15/2013 07:23 pmQuote from: ugordan on 02/15/2013 07:15 pmDare I say around 1 megaton event?Unlikely. Estimates have been ~10 tonnes and 20km/s, that gives 'just' 2TJ, little shy of half kiloton worth of KE.New estimates based on infrasound stations (and I don't know how theyderive the result) claim 15m dia, 7000 tonnes, and hundreds of kT
Quote from: ugordan on 02/15/2013 07:17 pmQuote from: Robotbeat on 02/15/2013 07:10 pmWhat are you doing about it?Nothing. Not a U.S. taxpayer so my opinion is inconsequential for all practical purposes. Well, you certainly could do whatever in your own country as well. That's just as important.