Posted on 06/29/2015 5:53:09 PM PDT by SunkenCiv
Before 1878, in a period with increased rate of ablation, a supraglacial lake formed in the centre of the glacier, this lake subsequently became covered by ice and snow. The collapse of the glacier tongue in 1892 finally released the accumulated water, a large cavity 40m in diameter and 20m high containing estimated 20.000 cubic meters water at the glacier terminus remained as testimony. From this lower cavity, an 85m long intraglacial conduit led to the upper cavity (the former lake) with an additional volume of 80.000 cubic meters. [History of Geology: Outburst flood from Glacier de Tete Rousse: A past and future threat]
Fig. 1. The lower cavity at the terminus of the glacier, note epeople for scale. A part of the snout has been torn from the glacier. Photograph by H. PELLOUX, September 1892, figure from VINCENT et al. 2010. [History of Geology: Outburst flood from Glacier de Tete Rousse: A past and future threat]
(Excerpt) Read more at historyofgeology.fieldofscience.com ...
Fig. 2. The upper cavity (former supraglacial lake) at the centre of the glacier. Photograph by M. KUSS, 13 August 1893, figure from VINCENT et al. 2010. [History of Geology: Outburst flood from Glacier de Tete Rousse: A past and future threat]
What would cause “an increased rate of ablation” ?
The combined volume of Lakes Erie and Ontario emptying over the period of a few days.
V-8 Conestoga Wagons.
Those Imperialist American settlers thoughtlessly imperiled Europe.
They could have said increased rate of erosion at the surface but what fun would that be?
The Scablands in central and eastern Washington are one of the most incredible flood landscapes I’ve ever seen.
Scoured Oregon pretty good. Maybe something similar could clear up 0bama DC (GW wuz a slaver)?
I suffered with some embarrassing ablation last week.
Puerto Vallarta—never again!
More water, less ice.
That would have been great to watch, y’know, from the air, or orbit.
They should’ve mentioned the location of this glacier.
The mountains. ;’) It’s in the Alps, but y’know, I don’t think I read the location anywhere. Maybe on wiki-wacky...
[rustling noise]
https://en.wikipedia.org/wiki/Mont_Blanc_glacier_flood
France.
I went to seminar about that and it was fascinating how the geologist was nearly laughed out of the professional society for his theory. But he had the last laugh.
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