Posted on 06/02/2014 9:11:42 AM PDT by fishtank
Whats meant, tho, with the statement that the uplift cant be attributed to “Present day elastic response alone”?
That reads to me that the uplift is more than just rebound, right? If so, it means that something underneath is actively pushing up, which could very well be driving the calving.
Of the top of my head, the Himalayas are rising .6 inches, net of erosion yearly. That just shows the the Indian plate is still pushing into the Eurasian plate. Since Antarctica is a single plate, is is likely regional deformation. That is, perhaps the ice load is greater in one area and less in another.
"The east Antarctica has a stable Precambrian shield[3], while results of aeromagnetic surveys in the west Antarctica show the presence of large volumes of volcanic rock and associated subvolcanic intrusions, of the order of a million km3[24]. In the last million years, volcanism has renewed on at least four of the islands (Deception, Livingston, Greenwich, and King George), which is coincident with rifting and volcanism in the adjacent Bransfield basin[25]. Therefore, the west Antarctica (including the Antarctica peninsula) is much more active than the east.
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