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In Photos: Frozen Lakes in Winter

Teamwork

frozen lake science

(Image credit: J. Jolley)

A researcher transfers a sample to a rinse bucket at West Long Lake, Nebraska in the Valentine National Wildlife Refuge, in January 2008. The sample was collected using a pole-mounted Ekman dredge, for sampling benthic invertebrates.

Fractures in the ice

frozen lake science

(Image credit: Ted Ozersky)

Ted Ozersky, an ecologist and professor at the University of Minnesota in Duluth, stands on the clear ice at Lake Baikal, Siberia.

Journey to the center

frozen lake science

(Image credit: Kyle Zimmer)

A group of researchers walk out to sample the deepest part of a prairie pothole shallow lake in west-central Minnesota, in an area known as the "Prairie Pothole region" of North America.

Data download

frozen lake science

(Image credit: Tom Langer)

Photo of Leah Domine, a researcher at the University of St. Thomas in Minnesota, downloading data from a sonde — a tool containing measurement sensors — that was deployed under the ice in a prairie pothole shallow lake, in the so-called "Prairie Pothole region" of North America, in west-central Minnesota.

Reflections

frozen lake science

(Image credit: Anson Mackay)

This photo is a reflection of geologist George Swann, an associate professor in Palaeoclimatology at the University of Nottingham, sampling from a hole drilled through frozen Lake Baikal in Siberia.

Geometric ice

frozen lake science

(Image credit: Steve Sadro)

Autumn ice forming on Toolik Lake, Alaska, September 21, 2013.

Ridges and waves

frozen lake science

(Image credit: Steve Sadro)

Ice forming on Lake Ediza in Sierra Nevada, California, on July 8, 2006.

Sample taker

frozen lake science

(Image credit: Steve Sadro)

Jade Lawrence, a doctoral candidate in geology at Louisiana State University, drills holes in the ice in Lake E6 near Toolik Lake in Alaska, on May 11, 2013.

From A to B

frozen lake science

(Image credit: Steve Sadro)

Steve Sadro, an assistant professor of environmental science at the University of California, Davis, pulls a sled across Lake Toolik, Alaska on May 28, 2013.

Learning the trade

frozen lake science

(Image credit: Steve Sadro)

Winter sampling by undergraduates on Emerald Lake in Sierra Nevada, California, on March 28, 2013.