All Questions
Tagged with glaciology oceanography
11 questions
4
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0
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How saline were the earth's oceans during the Last Glacial Maximum?
According to Wikipedia sea water is 34.7 parts per thousand salt.
Between evaporation and precipitation it seems like this amount is kept largely in equilibrium but, during the last glacial maximum, a ...
- 577
21
votes
6
answers
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How does global-warming-triggered ice melting cause global sea levels to rise?
Apologies for asking a silly question like this. But I want to offer some points which I could not counter, as follows:
Ice is less dense than water, that is why it floats. For the same unit mass, if ...
- 417
6
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3
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What did the water's edge look like on the Pacific coast of the Laurentide Ice Sheet?
I have seen news reports saying that in recent years many more scientists think that humans first arrived in the Americas by boat, along coast of Alaska and Canada (before they were able to come ...
- 61
5
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Hypothetically, in the near future, could gas hydrate pingos erupt?
Could gas hydrate pingos erupt? If so, how quickly? And how much CH4 could they release?
I'm sorry if the questions sounds silly. I'm new here and I don't know much about gas hydrates and oceanography....
- 319
15
votes
2
answers
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Why doesn't sea level show seasonality?
North-hemisphere ice-shelf melts on summer and grows on winter. I would expect appreciable changes on sea-level between seasons, but sea-level looks equal on winter than on summer.
Why doesn't sea ...
user12525
6
votes
1
answer
51
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Do icebergs have any impact on ecology?
Are icebergs neutral actors in the environment, or do they have any impact on the local ecology. Do they have any environmental impacts that might influence any part of the biosphere?
- 334
7
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1
answer
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If ALL the ice melted, what percentage of the Earth's surface would be water?
At the present time, about 70% of the earth's surface is liquid water (perhaps that includes floating ice around Antarctica, and the Arctic Ice cap).
What percentage of the Earth's surface would be ...
14
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3
answers
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How will sea level rise be distributed across the globe?
Sea level rise from melting glaciers will not be uniformly distributed across the globe. However, it isn't clear to me what places will have the most and least extreme changes in sea level rise. I ...
- 14k
7
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3
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960
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Oxygen isotope ratio and Glaciers
The question is basically:
During the Cretaceous there were no continental ice sheets. The ratio
of O-18/O-16 in sea water was:
a) Higher than today
b) Lower than today
The answer ...
- 181
6
votes
1
answer
188
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About moving ice bergs northwards to slow down all the melting a tiny bit. ( Clearing away navigation hazards is a side effect of this.)
I read somewhere someone someone had the idea to try to move a 'small' iceberg with giant tugboats used to move oil-rigs. I thought if an Iceberg could be moved, why not move it $NORTHWARD$ maybe ...
- 397
7
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How much does ocean cover percentage change between glacial periods? [duplicate]
Currently, oceans cover about 71% of the total area of Earth. Ice ages can cause this figure to fluctuate, by lowering the sea level and creating land bridges and other features.
How much can this ...
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