کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9521581 | 1347796 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Water temperature in englacial and supraglacial channels: Change along the flow and contribution to ice melting on the channel wall
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Water temperature in englacial and supraglacial channels: Change along the flow and contribution to ice melting on the channel wall Water temperature in englacial and supraglacial channels: Change along the flow and contribution to ice melting on the channel wall](/preview/png/9521581.png)
چکیده انگلیسی
The physics of water temperature change along a glacial water stream and its relation to ice melting rate on the channel walls are examined. The heat balance equation is based on the principles of energy conservation and an empirical relation of heat exchange between ice and flowing water. It is shown that the temperature of water exponentially approaches a nonzero value as flowing along a glacial channel. The channel meandering and noncircular cross-section were also taken into account. Typical values of the equilibrium water temperature are hundredths to a tenth of a degree depending on the channel size and slope, but the temperature can drastically increase when the channel has sediments. We compared our calculations to 1) a series of experiments with an artificial channel in ice and 2) data obtained from measurements at the Caucasus and Patagonia glaciers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cold Regions Science and Technology - Volume 42, Issue 1, June 2005, Pages 53-62
Journal: Cold Regions Science and Technology - Volume 42, Issue 1, June 2005, Pages 53-62
نویسندگان
Evgeni Isenko, Renji Naruse, Bulat Mavlyudov,