MONITORING LAKE ICE IN NORTHERN ALASKA WITH BACKSCATTERING AND INTERFEROMETRIC APPROACHES USING SENTINEL-1 SAR DATA

The goal of this research was to evaluate the effect of Arctic climate change on the surrounding land area. In this research, we investigated a method to monitor the ice condition of shallow lakes in the Arctic region using C-band synthetic aperture radar (SAR) data and provide a strategy to evaluate the effect of climate change on the Arctic land area. A method to monitor the ice condition of these lakes was investigated using the SAR data acquired by Sentinel-1 from 2015 to 2018. We confirmed that the C-band SAR data from Sentinel-1 could monitor the ice condition of shallow lakes in northern Alaska. The backscattering threshold between floating and grounded ice was -14.8 to -16.8 dB depending on the incidence angle. We could also successfully monitor the growth of floating ice by using the interferometric SAR approach.