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Response of Passive Microwave Wave Frequencies in Snow

Author(s):

Manjinder Kaur , Amritsar College of Engineering and Technology, Amritsar.; Er. Gurjit Singh, Amritsar College of Engineering and Technology, Amritsar; Dr. Kamalkant Singh, Snow and Avalanche Study Establishment, Defense Research and Development Organization, Chandigarh

Keywords:

AMSR-2, Himalaya, Brightness Temperature (TB)

Abstract

Seasonal snows cover in NW-Himalaya plays an important role in hydrological and avalanche studies. Snow is an important natural water resource, which strongly affects the human life in high altitude areas and also to the national economy. However, snow may also cause avalanches and thus acts as a hazard. Mostly initiation of any avalanche depends on the condition of the snow pack, which is governed by some snow pack parameters i.e. snow depth, snow water equivalent, snow density etc. In Himalaya due to the ruggedness and inaccessibility of Himalayan terrain, it is very difficult to monitor the snowpack and also to collect these snow pack parameters using manual methods. Remote sensing satellite data (Optical and Microwave) has the potential to monitor the snow cover. Again in Himalaya, most of the area remains under clouds during winter period and optical satellite data will not be able to retrieve the snow cover information. However, due to its large wavelength, microwave satellite sensor data has capability to retrieve snow cover information in all-weather condition. In Microwave satellite data, Passive microwave data can be used to monitor the snow pack on regular basis, as this passive microwave satellite is having daily receptivity over the area under investigation. In the present study we have used, Passive microwave AMSR-2 (Advanced Microwave Scanning Radiometer-2) remote sensing data. We have estimated the Brightness Temperature (TB) data for Great Himalaya and Pir-Panjal Range at different frequencies i.e. 6.93, 7.3, 10.6, 18.7, 23.8, 36.5 and 89 GHz. The monthly Brightness Temperature (TB) maps were generated for year 2017. These maps at different frequencies were analysed to study the response of different passive microwave frequencies in snow.

Other Details

Paper ID: IJSRDV6I60056
Published in: Volume : 6, Issue : 6
Publication Date: 01/09/2018
Page(s): 57-59

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