Questions tagged [glaciation]

Questions about glaciations, glacial periods or ice ages. Including the evidence of their existence, the conditions during such periods and the causes.

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Why are symmetrical three-sided pyramidal peaks so common?

High alpine pyramidal peaks formed by cirque-carving glaciers very commonly (not always) have three nearly symmetrical faces and corresponding ridges spaced roughly 120 deg. apart. This is easily ...
charlie_sar's user avatar
2 votes
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Would it make sense to compare glacier fluctuations in New Zealand with Alps or Canadian rockies?

If I want to draw parallels between the glacier fluctuations between different glaciers, (considering similar size class, here, small) at a) New Zealand b) European Alps c) Canadian Rocky Mountains ...
kc_nul's user avatar
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1 vote
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How fast did Lake Agassiz and Lake Ojibway drain?

Lake Agassiz and Lake_Ojibway drained around the time of the 8.2 kiloyear event, perhaps in a couple of pulses, the first subglacially and the second when the glacial ice dam finally broke. Clearly ...
David Bailey's user avatar
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1 vote
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What determines and confirms sensitivity of glaciers to climate change/ climate forcing?

Consider two groups of glaciers, say Group A and Group B. For simplicity, let's consider the group to fall in one size class (say 1-5 sq km), both located in the same kind of climate. We DO NOT know ...
kc_nul's user avatar
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1 vote
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Milankovitch cycles and what?

Observe the vertical green lines in this diagram: Those events shows when temperature starts to sink when radiance is at top or even before that. If there was a simple connection between radiance and ...
Lehs's user avatar
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1 vote
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Can extratropical cyclones force global cooling?

We are living in a historical period of global warming since about 20,000 years ago. This global warming period is one of about ten in human history. Those periods may very well be forced to start by ...
Lehs's user avatar
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