5 ms·
21 metres deep, 6 miles? We have to commit to metric, every inch of the way. Anyway, from Wikipedia: "During the most recent ice age (at its maximum about 20
by Jedd 3y ago
21 metres deep, 6 miles?
We have to commit to metric, every inch of the way.
Anyway, from Wikipedia:
"During the most recent ice age (at its maximum about 20,000 years ago) the world's sea level was about 130 m lower than today, due to the large amount of sea water that had evaporated and been deposited as snow and ice, mostly in the Laurentide Ice Sheet. Most of this had melted by about 10,000 years ago."
Has this been under dispute?
- verisimi 3y ago[flagged]
- stvltvs 3y agoRather than worry, we need to plan for the devastation caused to the people and massive investments in infrastructure that lie within centimeters of the current sea level.
- throwaway69123 3y agoPutting aside the arguments on the merits of global warming ideology, your logical argument doesnt make sense, the sea rise in question was on the back of an ice age that receeded the waters prior, just because things have multiple causes doesnt mean it invalidates the other.
- deleted 3y ago[deleted]
- Hikikomori 3y agoThe difference is time and how quickly things are changing now.
- basil-rash 3y agoThings are changing much slower now than in any prehistoric time we know of.
- Hikikomori 3y agoTemperature as well?
- lettergram 3y agoYou do know most of that ice melted relatively quickly? We don’t have much ice left to melt in comparison, and the levels haven’t changed much in the last 100 years really. evidence doesn’t seem to support this thesis
- Hikikomori 3y agoDid temperature also change as quickly?
- lettergram 3y agoWe don’t know, we do know temperature increased (how quickly exactly no one knows)
- chrisco255 3y agoThe problem with inferring ancient temperature is you have to rely on sparse proximal data (ie tree rings, ice cores, etc) that is only accurate within 1 or 2 degrees C for estimation and then you have to fill in whatever's missing, geographically and temporally. Still sometimes the data does indicate sharp, dramatic changes, such as the Younger Dryas, about 12K years ago. After the recent glacial period ended, roughly 14K YA, there was a plunge back to glacial temps over a couple centuries which lasted about 1200 years, then very suddenly the temperature rose almost 20C. https://en.wikipedia.org/wiki/Younger_Dryas#/media/File:Younger_Dryas_and_Air_Temperature_Changes.jpg https://en.wikipedia.org/wiki/Younger_Dryas#/media/File:Youn...
- verisimi 3y agoI agree. The issue with doubting ancient temperatures, is that one has no faith in the predictions of science for the present, as this is the basis/metric in use.
- dylan604 3y agoWell, because you could die in a horrible natural disaster, why wear your seat belt? There are things that "we" can control the effect "we" are having, and there are things that are totally out of "our" control. So we should just not care about the things we can because things we can't exist is just a very strange leap in logic.
- redeeman 3y agothat is not what he suggested