A thermal plume in the northwest part of the lake indicates underlying subaerial fumarolic or hydrothermal activity .

湖泊西北部的热卷流表明潜在地表上的热气或水热在活动。

Subaerial fumarolic or hydrothermal activity is implied by a large thermal plume in the center of the lake which slowly convects the water .

湖水中央的热烟流慢慢地借对流传热意味着地表上的热气或水热的活动。