evanescent: fleeting, transitory
evanescent wave: a nearfield standing wave, employed for total internal reflection microscopy
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South Georgia: Twitcher Glacier |
Twitcher Glacier (54°43′S 35°56′W) is a glacier, 4 miles (6 km) long, which flows east from the Salvesen Range to the east coast of South Georgia, immediately south of Herz Glacier and Iris Bay. The glacier was surveyed in 1951-52 by the SGS. Named by the United Kingdom Antarctic Place-Names Committee for John Montagu, 4th Earl of Sandwich, First Lord of the Admiralty, 1771–82, who was popularly known as "Jemmy Twitcher." [Wikipedia] The glacier showed a slow retreat up until 1988, but the retreat has since accelerated rapidly, likely as a result of Global warming. Dion took us in the Hans Hansson up the fjord to the present glacier face. According to the chart on the computer screen, we sailed about 2 km up the glacier itself! The red trace on the screen plots our GPS positions. |
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created 03/14/2016
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