Vanch-Yakh Glacier

{{Short description|Glacier in Tajikistan}}

File:Fedchenko Glacier.jpg satellite image, 2008-08-22]]

File:1982 expedition to Tartu Ülikool 350 (07).jpg during expedition to Tartu Ülikool 350.]]

The Fedchenko Glacier ({{langx|ru|Ледник Федченко}}) or the Vanch-Yakh Glacier ({{langx|tg|Пиряхи Ванҷях}}) is a large glacier in the Yazgulem Range, Pamir Mountains, of north-central Gorno-Badakhshan province, Tajikistan. The glacier is long and narrow, currently{{When|date=April 2024}} extending for {{convert|77|km|mi}} and covering over {{convert|700|km2}}. It is the longest glacier in the world outside of the polar regions.In the Karakoram Mountains, the Siachen Glacier is 76 km long, the Biafo Glacier is 67 km long, and the Baltoro is 63 km long. The Bruggen or Pio XI Glacier in southern Chile is 66 km long. Kyrgyzstan's South Inylchek (Enylchek) Glacier is 60.5 km in length. Measurements are from recent imagery, generally with Russian 1:200,000 scale topographic mapping for reference as well as the 1990 Orographic Sketch Map: Karakoram: Sheets 1 and 2, Swiss Foundation for Alpine Research, Zurich. The maximum thickness of the glacier is {{convert|1000|m|ft}}, and the volume of the glacier and its dozens of tributaries is estimated at {{convert|144|km3}}—about a third of the volume of Lake Erie.

Path and location

The glacier follows a generally northward path to the east of the {{convert|6595|m|ft|abbr=off|adj=on}} Garmo Peak. The glacier begins at an elevation of {{convert|6200|m|ft}} and eventually melts and empties into the Balandkiik River near the border with Kyrgyzstan at an elevation of {{convert|2909|m|ft}}. Its waters eventually feed down the Muksu, Surkhob, Vakhsh, and Amu Darya rivers into the Aral Sea.

To the west is the Academy of Sciences Range, Mount Garmo, Ismoil Somoni Peak, Peak Korzhenevskaya, the headwaters of the Vanj River, and Yazgulyam River. To the south is Independence Peak and to the east Gorbunov Peak (6,025 meters). To the north is Altyn Mazar.

Discovery

The glacier was discovered in 1878 and was named after Alexei Pavlovich Fedchenko, a Russian explorer (but not the discoverer of the glacier). It was not fully explored until 1928 by a German-Soviet expedition under {{Interlanguage link|Willi Rickmer Rickmers|de|3=Willi Rickmer Rickmers}}. Between 1910 and 1913 the glacier expanded and moved forward by {{convert|800|to|1000|m|yard|-1}}, blocking up the Balyandlik River the following year. It continued to recede between 1928 and 1960, stopping its inflows such as the Kosinenko, Ulugbeck, Alert and several others.{{cite web|url=http://www.meteo.tj/eng/doc/expedition-2006.pdf|title=Field research of glaciers and glacial lakes located in Karatag, Vakhsh and Zeravshan river basin.|publisher=Meteo|accessdate=13 May 2012}}{{dead link|date=September 2017 |bot=InternetArchiveBot |fix-attempted=yes }}

In 2023, Tajikistan officially renamed the glacier as part of a derussification program.{{Cite web |title=СМИ: крупнейший на Памире ледник Федченко переименован в "Ванджях" |date=19 August 2023 |url=https://rus.ozodi.org/a/32555126.html |access-date=2023-09-17 |language=ru}}

See also

Notes

{{Reflist}}

References

  • [https://www.britannica.com/place/Fedchenko-Glacier "Fedchenko Glacier"]. Encyclopædia Britannica online edition. Retrieved 8 December 2005.
  • [http://unfccc.int/resource/docs/natc/tainc1.pdf "The First National Communication of the Republic of Tajikistan under the United Nations Framework Convention on Climate Change]. Republic of Tajikistan Ministry for Nature Protection. Dushanbe: 2002.
  • [http://enrin.grida.no/htmls/tadjik/vitalgraphics/eng/html/uyazv.htm "Tajikistan 2002: Vital Maps and Graphics on Climate Change"] {{Webarchive|url=https://web.archive.org/web/20060501215122/http://enrin.grida.no/htmls/tadjik/vitalgraphics/eng/html/uyazv.htm |date=2006-05-01 }}. Tajikistan Met Service. Retrieved 18 August 2005.
  • [http://countrystudies.us/tajikistan/14.htm "Tajikistan - Topography and Drainage"]. U.S. Department of the Army. Published by the Federal Research Division of the Library of Congress. Online version retrieved 8 December 2005.