Observations on the development of shore lines on Lake Vanda

A number of observations on the development of the shore line around Lake Vanda was recorded. Two previous seasons found the lake level to have risen considerably but the 72/73 season the lake level was stable. This meant that fresh valley walls were exposed to a stable water level and a shore line developed. This took place within a space of about 10 days of the lake edge beginning to thaw and resulted in the slumping of valley wall material into the lake as it became wet, eventually forming a near horizontal platform at water level, which was up to 3m wide with vertical risers up to 1m. This would indicate that the upper lake levels could have been formed very rapidly and the high stand of the lake need not have been long lasting.