Study on Circular Polarization and Cryosphere at Saroma Lake, Hokkaido Posted on May 17, 2011August 25, 2013 by Josaphat Tetuko Sri Sumantyo Prof Josaphat and students held experiment of microwave spectrometer to study the relationship of circular polarization and snow-ice characteristics at Saroma Lake, Hokkaido, Japan on 17 May 2011