Thiel Trough

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Coordinates: 81 ° 30 ′  S , 57 ° 0 ′  W

Relief Map: Antarctica
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Thiel Trough​
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Antarctic

The Thiel Trough is a 1500 m below sea level deep -sea channel in the Antarctic Weddell Sea . It extends northeast-southwest from 76 ° 30 ′  S , 35 ° 0 ′  W under the Filchner-Ronne Ice Shelf south of the Henry Ice Rise in a westerly direction to about 83 ° 0 ′  S , 85 ° 0 ′  W near the Martin Hills in the continental shelf of the Antarctic continent in Ellsworthland .

American scientists discovered the northeastern part during a reconnaissance march from Ellsworth Station to the Henry Ice Rise between 1957 and 1958. They named this part as Crary Trough after the geophysicist Albert P. Crary (1911-1987), chief scientist of the United States Antarctic Research Program . The southwestern part was explored by US seismologists between 1958 and 1964. Scientists determined the complete extent as part of a joint program of the Scott Polar Research Institute , the National Science Foundation and Denmark's Technical University through airborne sonar location between 1967 and 1979. The Advisory Committee on Antarctic Names named the entire object at Crary's suggestion in 1975. It is named after Edward C. Thiel (1928–1961), senior seismologist at Ellsworth Station between 1956 and 1958, who on November 9, 1961, together with four other passengers, when a Lockheed P-2 crashed shortly after take-off from the Wilkes- Station was killed.

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