Results of temperature measurements on the drifting ice island "North pole 19"

The temperature within the ice island has an annual period and propagates with damping and phase shift from the surface down to 20 m. Below this level the ice temperature is constant in time and increases linearly towards the islands bottom until it becomes equal to the freezing point of the sea water. The annual component of temperature variations from the upper surface of the island down to the 9 m level is satisfactorily described by a well-known Fourier law for homogeneous isentropic strata.