On the ground in Barrow, Alaska

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Berkeley Lab geophysicist Susan Hubbard studies Arctic permafrost dynamics.

Berkeley Lab geophysicist Susan Hubbard studies Arctic permafrost dynamics.

Hubbard and NGEE-Arctic lead investigator Stan Wullschleger measureing soil temperature and active layer depth.

Hubbard and NGEE-Arctic lead investigator Stan Wullschleger measureing soil temperature and active layer depth.

Researchers hit the ground with sledgehammers to produce and measure seismic waves.

Researchers hit the ground with sledgehammers to produce and measure seismic waves.

Hubbard on a snowmobile pulling geophysical sensors.

Hubbard on a snowmobile pulling geophysical sensors.

Berkeley Lab scientist Baptiste Dafflon collects electromagnetic data.

Berkeley Lab scientist Baptiste Dafflon collects electromagnetic data.

Line of electrodes in the snow

Line of electrodes in the snow

A camera suspended from a kite.

A camera suspended from a kite.

3D diagram of complex relationships between land surface, active layer and permafrost.

3D diagram of complex relationships between land surface, active layer and permafrost.

Polar bear in snow

Polar bear in snow

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