File:Thermals over Bishop Hill providing lift to gliders - geograph.org.uk - 490526.jpg
Thermals_over_Bishop_Hill_providing_lift_to_gliders_-_geograph.org.uk_-_490526.jpg (640 × 480 pixels, file size: 30 KB, MIME type: image/jpeg)
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Summary
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| Description |
English: Thermals over Bishop Hill providing lift to gliders Warm air rising in front of and above the hill allow glider pilots to stay up for hours.
These thermals are the escalator or lift to the heavens. More about these atmospheric phenomena here: http://en.wikipedia.org/wiki/Thermal My thanks to James Allan for his input here: Gliders usually operate here in orographic up-currents or mountain waves, caused by westerly winds being forced upwards by the Bishop Hill escarpment. Thermals (as described in the link) can occur here too under certain conditions, but were probably absent under the cloud cover depicted. There are ten gliders in this picture above this gridsquare, sometimes there can be more. From the ground it looks like a wartime dog-fight Dog_fight |
| Date | |
| Source | From geograph.org.uk |
| Author | Simon Johnston |
| Attribution (required by the license) | Simon Johnston / Thermals over Bishop Hill providing lift to gliders / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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| Object location | | View this and other nearby images on: OpenStreetMap | |
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Licensing
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This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Simon Johnston and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 06:25, 5 February 2011 | | 640 × 480 (30 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Thermals over Bishop Hill providing lift to gliders Warm air rising in front of and above the hill allow glider pilots to stay up for hours. These thermals are the escalator or lift to the heavens. |
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