Comments on: 125 sq km of ice knocked off Antarctica by Tsunami https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/ Sat, 13 Aug 2011 23:42:39 +0000 hourly 1 https://wordpress.org/?v=6.4.6 By: Greg Laden https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506894 Sat, 13 Aug 2011 23:42:39 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506894 I am pretty sure that the ice sheets affected run over the continental shelf which varies in that region to modest in size to huge (the bay next to the ice sheet in question is all shallow). Of course, the height of the wave may not be what matters, here, but rather, the total energy and its resonance. (I’m guessing at that.)

]]> By: UBS https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506893 Sat, 13 Aug 2011 20:11:51 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506893 Yes, this is such a large piece of ice, that I persume that much of it was loacated far out from shore

]]> By: Greg Laden https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506892 Fri, 12 Aug 2011 14:10:24 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506892 USB, I’m not sure what you are getting at exactly, but are you referring to the idea that the ice shelf is off the edge of the continental shelf?

]]> By: UBS https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506891 Fri, 12 Aug 2011 10:57:53 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506891 Just one question – i don’t know the particulars about water depths and sea bed topology in the region, but how is a tsunami able to emerge in the deep sea?

]]> By: Stephanie Z https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506890 Fri, 12 Aug 2011 04:04:10 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506890 No, Randomfactor, the real question is whether a calving of this magnitude caused another tsunami, like in Titanic II?!?

Sorry, still a little traumatized by that movie, even though I knew it couldn’t be any good going in.

]]> By: Randomfactor https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506889 Fri, 12 Aug 2011 00:11:32 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506889 Wonder if there was a corresponding sea-level rise…

]]> By: Greg Laden https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506888 Thu, 11 Aug 2011 15:45:58 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506888 Thanks! …. And, we now expect another glacial event within the next few days to be reported. A glacier in Europe dumped a chunk of ice near a tourist boat a couple of days ago, so that makes two events, and since things ‘happen’ (are reported to happen) in threes, anyone standing near a glacier right now should check over their shoulder!

]]> By: kbrunt https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506887 Thu, 11 Aug 2011 14:56:45 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506887 Hi Greg- I’m first author on this paper. Great writeup! You even got gist of our quote right, without hearing it first-hand:
“holy crap, the glacier just fell off.”

No matter how much the modeling or math suggested this was possible, we were all very surprised to see a Manhattan-sized Antarctic iceberg as a result of a northern hemisphere earthquake and tsunami. We thought it was wicked cool! Glad to hear that you were interested as well!

]]> By: Mu https://gregladen.com/blog/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506886 Wed, 10 Aug 2011 19:01:47 +0000 http://scienceblogs.com/gregladen/2011/08/10/125-sq-km-of-ice-knocked-off-a/#comment-506886 The video reinforces the complex nature of the process, the calving event seems to proceed along a preexisting fault line across the length of the shelf. The tsunami somehow deposits enough energy to not only recrack along the line but also get the new icebergs moving enough to prevent refreezing. Neat that satellites can give us such a birds-eye view of large scale events.

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