assessment of environmental impacts from past human activities at Vanda Station; a site which may be influenced by rising the rising water level and a steel tower
Description:
45m west of the Vanda Station mess building and 31.5m northeast of a disused Helo landing pad, on an elongated island 5.7m from the current lake edge
Altitude:
92 m
Aspect:
Slope:
0 °
Location Data
Observer
GGC
IBC
GPS
No
Latitude Longitude DMS
77° 0.0' S 161° 40.0' E
77° 31.62' S 161° 39.72' E
Latitude Longitude DD
-77.000 161.667
-77.52700 161.66200
Latitude longitude precision DD
0.008 0.008
0.00008 0.00008
Locality
Vanda Station, Wright Valley at the eastern end of Lake Vanda
Survey
not recorded
Climate
Soil climate zone:
coastal mountain
Estimated mean annual temperature:
-20
°C
Frozen ground depth:
35 ~
Frozen type:
dry frozen
Frozen comment:
~35
Geology
Geological setting:
the rocks of the area are granodiorites that have been cut with lamprophyre dykes and form a strongly undulating ridge and gully topography as a result of ice over riding from down-valley and up-valley glaciations and to a lesser extent, subaerial weathering; subsequent to glaciation, the terrain has been subjected to drowning and emergence from fluctuating lake levels from Lake Vanda with some sorting or resorting of surficial materials
Patterned ground:
Surface weathering or surface features:
pebble pavement is angular gravel
Soil
Soil parent material:
sandy gravel with the coarse fraction derived chiefly from shattered lamprophyre dyke rock
Previous disturbance:
mainly from foot trafficking and some vehicle traffic