دورية أكاديمية
Favorable climatic regime for maintaining the present-day geometry of the Gregoriev Glacier, Inner Tien Shan
العنوان: | Favorable climatic regime for maintaining the present-day geometry of the Gregoriev Glacier, Inner Tien Shan |
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المؤلفون: | K. Fujita, N. Takeuchi, S. A. Nikitin, A. B. Surazakov, S. Okamoto, V. B. Aizen, J. Kubota |
المصدر: | The Cryosphere, Vol 5, Iss 3, Pp 539-549 (2011) |
بيانات النشر: | Copernicus Publications, 2011. |
سنة النشر: | 2011 |
المجموعة: | LCC:Environmental sciences LCC:Geology |
مصطلحات موضوعية: | Environmental sciences, GE1-350, Geology, QE1-996.5 |
الوصف: | We conducted 2 yr (2005–2007) of in situ meteorological and glaciological observations on the Gregoriev Glacier, a flat-top glacier within the Inner Tien Shan, Kyrgyzstan. Relative carrier-phase GPS surveys reveal a vertical lowering at the summit of the glacier. Based on snow density data and an energy-mass balance model, we estimate that the annual precipitation and summer mean temperature required to maintain the glacier in the current state are 289 mm and −3.8 °C at the glacier summit (4600 m a.s.l.), respectively. The good agreement between dynamically derived precipitation and the long-term observed precipitation at a nearby station in the Tien Shan (296 mm at 3614 m a.s.l. for the period 1930–2002) suggests that the glacier has been in a near steady-state in terms of mass supply. The glacier mass-balance, reconstructed based on meteorological data from the Tien Shan station for the past 80 yr, explains the observed fluctuations in glacier extent, particularly the negative mass balance in the 1990s. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1994-0416 1994-0424 |
Relation: | http://www.the-cryosphere.net/5/539/2011/tc-5-539-2011.pdf; https://doaj.org/toc/1994-0416; https://doaj.org/toc/1994-0424 |
DOI: | 10.5194/tc-5-539-2011 |
URL الوصول: | https://doaj.org/article/d8d9d10ddd01459c84687645ae7c7de2 |
رقم الأكسشن: | edsdoj.8d9d10ddd01459c84687645ae7c7de2 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 19940416 19940424 |
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DOI: | 10.5194/tc-5-539-2011 |