Ninnis glacier
| Ninnis glacier | ||
|---|---|---|
| location | George V coast , Antarctica | |
| Coordinates | 68 ° 22 ′ S , 147 ° 0 ′ E | |
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| drainage | Southern ocean | |
 Ninnis during the exploration in December 1911 |
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The Ninnis Glacier is a glacier that flows into the Southern Ocean on the East Antarctic George V coast . It is located in the Antarctic Territory claimed by Australia .
Naming
In December 1911, the Australasian Antarctic Expedition began under the leadership of the Australian geologist Douglas Mawson . The aim of the expedition was initially to map the approximately 2000 kilometers long coastal strip facing the Australian continent. The expedition also served to explore and research previously unknown terrain, and the first meteorite Adelie Land to be found in Antarctica also came from this expedition. Information about Adelie Land ( Memento of September 28, 2007 in the Internet Archive )
In November 1912, three polar explorers - the Australian Mawson, the Swiss Xavier Mertz and the British Belgrave Ninnis - began a multi-week exploration of King George V Land by dog sledding. On December 14, 1912, Ninnis fell into a crevasse and with him six dogs and most of the food. Mawson noted about this moment in his expedition report:
- "Half out of my mind, I waved to Mertz to bring my sled ... I leaned forward and called out into the dark depths. No sound came back, only the whimpering of a dog that had got stuck on a randomly visible ledge 45 meters below ... Close by, as it seemed in the dark, were the remains of a tent and a linen sack with food for 14 days for three Man. We broke open the firn bridge completely, leaned in front of us secured by a rope and shouted down into the darkness, in the hope that our comrade would still like to be alive. We called incessantly for three hours, but no answer came back. "
Mawson and Mertz then broke off the exploration and tried to return to the base camp , which is more than 500 kilometers away . The first glacier they crossed on the way back they called the Ninnis Glacier. Mertz did not survive the return trip. Mawson reached base camp on February 8, 1912.
glaciology
Glaciers are huge ice masses that are on land or snow and move independently due to the slope, the structure of the ice, the temperature and the shear stress resulting from the mass of the ice .
The glacier was surveyed during the Australasian Antarctic Expedition in 1912. According to a study in 1996, it was assumed that the size of the glacier had decreased by two thirds from the year it was measured until 1993. However, a more recent study from 1998 cast doubt on the accuracy of the measurement techniques used at the time. According to this study, there were large eruptions on the glacier tongue at the beginning of the 1950s. However, the greatest losses in the mass of the glacier occurred after 1980. By shear cleavage of the glacier, which until 1993 comprised around 60 percent of the projects into the ocean part was created. In January 2000, a 900 square kilometer part of the glacier tongue broke off. This broken part broke in two again shortly afterwards, so that two huge icebergs each formed from the surface of Berlin.
Individual evidence
- ↑ Ninnis Glacier in the Geographic Names Information System of the United States Geological Survey
- ↑ Douglas Mawson: Life and Death at the South Pole ( Memento of the original from December 6, 2015 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 2 volumes, Brockhaus-Verlag, Leipzig 1922
- ^ The Medical Journal of Australia, Article Mawson and Mertz: A Re-evaluation of Their Ill-fated Mapping Journey During the 1911–1914 Australasian Antarctic Expedition , April 2005
- ↑ Spiegel Online, article In the End They Ate Sled Dogs, March 11, 2008
- ↑ Swisseduc.ch , Glaciers online
- ^ NASA Earth Observatory, Disintegration of the Ninnes Glacier Tongue, December 1, 2000
- ↑ Spectrum of Science Verlag Separation with consequences ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. , December 11, 2000
