کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4676424 | 1634497 | 2009 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric properties of brine-wetted snow on first-year sea ice
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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: Dielectric properties of brine-wetted snow on first-year sea ice Dielectric properties of brine-wetted snow on first-year sea ice](/preview/png/4676424.png)
چکیده انگلیسی
We present measurements, empirical models and a semi-physical dielectric mixture model for the dielectric constant and dielectric loss of brine-wetted snow on first-year sea ice. Experimental data include snow temperatures from â 15.9° to 0.0 °C and snow salinities from 0.1 to 12 parts/thousand. We compare dielectric measurements at 50 MHz with brine volume fraction, brine saturation and snow temperature. We present a dielectric mixture model for brine-wetted snow, with depolarization factors and conductivity parameters fitted to experimental data. The dielectric constant of snow increases by a factor of 78.65 times the brine volume fraction. The dielectric loss and conductivity also increase with brine volume fraction. We provide a theoretical treatment of the frequency dispersion of brine-wetted snow between 10 MHz and 40 GHz. The dielectric properties of brine-wetted snow are highly sensitive to changes in brine volume fraction and snow temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cold Regions Science and Technology - Volume 58, Issues 1â2, August 2009, Pages 47-56
Journal: Cold Regions Science and Technology - Volume 58, Issues 1â2, August 2009, Pages 47-56
نویسندگان
Torsten Geldsetzer, Alexandre Langlois, John Yackel,