4 ms·

is there any noticeable effect of earth’s rotation and uneven gravity field on distribution of sea-level change?

• chris_overseas 7y ago
  Yes gravity, and to a lesser extent rotation, have a (somewhat unintuitive) impact on how the sea level will change across different parts of the globe. There's a good overview of this topic here: https://www.theguardian.com/environment/ng-interactive/2018/sep/12/greenland-antarctic-ice-sheet-sea-level-rise-science-climate https://www.theguardian.com/environment/ng-interactive/2018/... Edit: video showing gravity changing over time due to melt: https://blogs.agu.org/wildwildscience/2016/07/21/gravity-greenland-dropping-no-really/ https://blogs.agu.org/wildwildscience/2016/07/21/gravity-gre...
  • keymone 7y ago
    thanks! nice video, seems like gibraltar is getting a lot of action
  • 7952 7y ago
    The sea level as it stands today is already effected by gravity. And this is in fact built into the wgs84 datum. So vertical elevation is measured relative to that assumed sea level after the effects of gravity. And a rise in sea level would presumably be measured relative to that existing datum.