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  1. Embed this notice
    SK53 (sk53@en.osm.town)'s status on Sunday, 26-Nov-2023 07:58:00 JST SK53 SK53

    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".

    In conversation Sunday, 26-Nov-2023 07:58:00 JST from en.osm.town permalink

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    1. https://cdn.masto.host/enosmtown/media_attachments/files/111/473/314/784/280/319/original/eb1a3e2ecc7ddaff.png
    • Embed this notice
      Brendan Jones (brendanjones@fosstodon.org)'s status on Sunday, 26-Nov-2023 07:57:53 JST Brendan Jones Brendan Jones
      in reply to
      • legraLeGra

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

      In conversation Sunday, 26-Nov-2023 07:57:53 JST permalink
    • Embed this notice
      Brendan Jones (brendanjones@fosstodon.org)'s status on Sunday, 26-Nov-2023 21:19:37 JST Brendan Jones Brendan Jones
      in reply to
      • legraLeGra

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

      In conversation Sunday, 26-Nov-2023 21:19:37 JST permalink
    • Embed this notice
      legraLeGra (atthenius@fediscience.org)'s status on Sunday, 26-Nov-2023 21:19:38 JST legraLeGra legraLeGra
      in reply to
      • Brendan Jones

      @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.

      In conversation Sunday, 26-Nov-2023 21:19:38 JST permalink

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