fosstodon.org is one of the many independent Mastodon servers you can use to participate in the fediverse.
Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software. If you wish to join, contact us for an invite.

Administered by:

Server stats:

11K
active users

Antarctica for day 2️⃣ 5️⃣ of #30DayMapChallenge : a fanciful conjecture based on NISDC bedrock data. Subsidiary title should read "nor isostatic rebound nor sea level rise".

Brendan Jones

@SK53 @atthenius Is it without ice really such an archipelago at current sea levels? I had always assumed it was a bit more … solid.

@Brendanjones @SK53

The grounding line in many spots in Antarctica is below sea level: scary :-/

But, given enough time (millennia), the land would ‘rise’ w/o the load of ice on top of it (isostatic rebound*)… but, w/o that ice-load, seas would be 50’s meters-ish higher.

Isostatic rebound: think about it like continents floating on a sea of mantle (so they must have keels)… and ice sheets are like huge foam blocks on top, pushing the whole boat below ‘surface’. That’ll rebound in time.

@atthenius @SK53 very cool (the concepts, not the sea level rise), thanks for the explanation.