Salt Crust and Water in Ephemeral Lake Eyre, Australia – April 20th, 201128.1S 137.2E
Lake Eyre is the terminal point of the great continental drainage system which spreads over 1.14 x 106 km2 of arid central Australia. The lake, whose lowest parts lie 15.2 m below sea level, consists of two sections: Lake Eyre North and Lake Eyre South, joined by the narrow Goyder Channel.
Both sections can be observed here. The larger Lake Eyre North appears tan to the west, with some green in the southwestern part, and white to the east, with some pink in the southeastern part.
The white color is due to a salt crust up to 460 mm thick that only dissolves completely at times of major inflows. The smaller Lake Eyre South is mostly tan in color, although a white, salty crust can be observed along its northern shoreline.