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2020 LTS Keflavik news post draft: Difference between revisions
2020 LTS Keflavik news post draft (view source)
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[Screenshot of Surtsey, screenshot of Aurora in Iceland] | [Screenshot of Surtsey, screenshot of Aurora in Iceland] | ||
Iceland's volcanoes are often strato-volcanoes with their steeper cone shaped sides, as the viscous lava here flows less easily becoming hard before spreading far. Eruptions can be explosive, as gasses remain trapped. There are some shield volcanoes too, with their the shallower domes shapes similar to the volcanoes of Hawaii. | Iceland's volcanoes are often strato-volcanoes with their steeper cone shaped sides, as the viscous lava here flows less easily and becoming hard before spreading far. Eruptions can be explosive, as gasses remain trapped. There are some shield volcanoes too, with their the shallower domes shapes similar to the volcanoes of Hawaii. | ||
[Screenshot of a volcano with no eruption?] | [Screenshot of a volcano with no eruption?] | ||
Flightgear models several Icelandic volcanoes at multiple activity levels; Eyjafjallajökull, Surtsey, and Katla. Eyjafjallajökull and it's cloud of volcanic ash caused severe disruption to aviation in 2010. Katla is a far bigger volcano located nearby. Past eruptions at Katla have ranged from a Volcanic Explosivity Index (VEI) of 4 like Eyjafjallajökull, to a VEI of 6 like Mount Pinturbo (1991) or Krakatoa (1883). Scarily Katla is somewhat overdue for an eruption. Screenshots don't do the boiling turbulence of a volcanic plume like Katla. We won't spoil it, so you can discover and appreciate the scale of the forces involved [unless someone has a particularly nice screenshot?]. FG's Advanced Weather engine now models the increased turbulence in wind-fields associated with volcanic activity, so beware!. | Flightgear models several Icelandic volcanoes at multiple activity levels; Eyjafjallajökull, Surtsey, and Katla. Eyjafjallajökull and it's cloud of volcanic ash caused severe disruption to aviation in 2010. Katla is a far bigger volcano located nearby. Past eruptions at Katla have ranged from a Volcanic Explosivity Index (VEI) of 4 like Eyjafjallajökull, to a VEI of 6 like Mount Pinturbo (1991) or Krakatoa (1883). Scarily Katla is somewhat overdue for an eruption. Screenshots don't do justice to the boiling turbulence of a volcanic plume like Katla. We won't spoil it, so you can discover and appreciate the scale of the forces involved [unless someone has a particularly nice screenshot?]. FG's Advanced Weather engine now models the increased turbulence in wind-fields associated with volcanic activity, so beware!. | ||
Iceland has rugged volcanic terrain with glaciers, deserts, ice caps, marshes, fjords and a cool wet climate. There is plenty to discover. The island has only been colonised recently by both nature and people. There are almost no trees, as the young forests were cleared by early settlers. To re-create the stark subpolar setting, remember to turn on overlays which add high resolution 3d detail, and set [http://wiki.flightgear.org/Anti-aliasing#Transparency_anti-aliasing Transparency Anti-Aliasing] to MSAA in the GPU control panel (or supersampling on powerful cards). As Iceland has few trees, people with older GPUs may find they have spare performance and can use overlays in Iceland. | Iceland has rugged volcanic terrain with glaciers, deserts, ice caps, marshes, fjords and a cool wet climate. There is plenty to discover. The island has only been colonised recently by both nature and people. There are almost no trees, as the young forests were cleared by early settlers. To re-create the stark subpolar setting, remember to turn on overlays which add high resolution 3d detail, and set [http://wiki.flightgear.org/Anti-aliasing#Transparency_anti-aliasing Transparency Anti-Aliasing] to MSAA in the GPU control panel (or supersampling on powerful cards). As Iceland has few trees, people with older GPUs may find they have spare performance and can use overlays in Iceland. | ||