Dry Valleys, Antarctica 77°00' S Latitude 162°52' E Longitude (31 December 2004 – 3 February 2005)

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Presentation transcript:

Dry Valleys, Antarctica 77°00' S Latitude 162°52' E Longitude (31 December 2004 – 3 February 2005)

Christchurch, New Zealand

Clothing issue in Christchurch

C-141 Starlifter Transport to Antarctica

The 5.5 hour flight to Antarctica (not fun)

Landing on the Ice Shelf

Transport to McMurdo Station

McMurdo Station

Mount Erebus

Helicopter ride to the Dry Valleys

Taylor Valley (Photo courtesy of Mike Prentice;

Lake Hoare Camp

Research Labs

Solar Power for Station

Tents To Sleep In

High-Tech Outhouses

ALL waste is shipped out to the US.

Andrew Fountain The Team Glen Liston

Jon EbnetThomas Nylen

Our goal is to understand how sediment on the glacier influences glacier melt.

Each glacier has different sediment loads and surface characteristics.

Sea Ice Ice Bergs Lake Ice Glacier Snow

We either flew or walked to our research sites/glaciers.

The presence of sediment has a huge influence on melt rates.

Dirt melting into the ice.

The melt features can be very large.

Melt walls 10 m (30 ft) tall.

The melt finds its way into valley streams.

The stream discharge is measured throughout the Dry Valleys.

The present glacier over-riding an old lateral moraine.

A glacier calving study.

These glacier walls are very impressive.

Helicopter Operations

Mass balance measurements on the Taylor Glacier.

Interesting Geology

More Helicopter Operations

Mummified seals, up to 3500 years old.

Meteorological Station Maintenance

Ventifacts, caused by abrasion of wind-blown grit.

Permafrost, Ice-Wedge Polygon Study

The lakes in the Taylor Valley are generally covered by very dirty ice that is a few meters thick.

A dirty, ice-covered lake, with a research hut.

Like the glaciers, the sediment plays a large role in the lake-ice melt.

Re-freezing of the lake moat.

Lake Ice Melt

Algal mats (under water), showing sand underneath, and oxygen bubble production.

Orange-colored algal mats, with ice above that contains bubbles from algal productivity.

Otherwise, a visibly dry, and unvegetated landscape.

The glaciers are truly amazing!

We head back to McMurdo.

Penguins

Mutton

Time to head back to Christchurch.

Dreaming of vegetation.

The End