598

Site number:

598

Authors:

IBC, GGGC, MRB

Date recorded:

1990/02/02

Reason Sampled:

Permafrost and soil moisture investigations

Description:

Northwest of Scott Base, above the roadway and on the recently constructed pipeline track; at the north end just before the bend where the pipeline turns then passes down hill; 70m SW of site 597 and 25m north of battered section

Altitude:

60 m

Aspect:

Nil

Slope:

0 °

Climate

Soil climate zone:

Coastal Antarctic

Estimated mean annual temperature:

-18 °C

Frozen ground depth:

95 > cm

Frozen type:

Dry frozen

Frozen comment:

>95cm

Geology

Geological setting:

Rocks are predominantly scoria flows of the McMurdo Volcanics; Last Glaciation Ross 1 ice covered the site and traces of rocks (sandstone and granite granules and small pebbles) probably from the Royal Society Range can be found; the drift mantle is thin and patchy with bedrock a little below the surface

Patterned ground:

Nil

Surface weathering or surface features:

Nil

Soil

Soil parent material:

Constructed fill material derived locally from McMurdo Volcanics and drift cover deposits

Previous disturbance:

Surface constructed as a pipeline track; construction recently finished (December 1989)

Soil weathering stage:

6 1 (Campbell & Claridge 1975)

Soil moisture status:

Xerous to subxerous; light snow on the soil surface

Biological activity:

Nil