UDC 621.369.9

Temperature dependence of the backscattering coefficient measured by ALOS PALSAR during cooling and heating of tundra topsoil

 

K. V. Muzalevskiy

Kirensky Institute of Physics Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

 

The paper is received on November 7, 2019

 

Abstract. In this paper, dependences of backscattering coefficient on Arctic tundra soil temperature were investigated.  The backscattering coefficient was measured by  ALOS PALSAR (1.3GHz) over areas near to Imnaviat weather station in the North Slope of Alaska in the period from January 12, 2009 to April 20, 2011. It has been experimentally and theoretically shown that there is a strong correlation relationship no worse than 0.76  between the surface soil temperature measured by weather stations  and backscattering coefficient. The variations of the backscattering coefficient was found to be about 5-6 dB over the test site when soil surface temperature changes from -10°Ñ to 10°Ñ. This study contributes to further understanding the processes of scattering of frozen Arctic soils that is pertinent to developing new remote sensing algorithms for the permafrost region.

Key words: ALOS PALSAR, backscattering, active layer, topsoil temperature.

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For citation:

Muzalevskiy K.V. Temperature dependence of the backscattering coefficient measured by ALOS PALSAR during cooling and heating of tundra topsoil. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 11. Available at http://jre.cplire.ru/jre/nov19/19/text.pdf

DOI  10.30898/1684-1719.2019.11.19