Remediation of metal-contaminated soil in polar environments: Phosphate fixation at Casey Station, East Antarctica

2014 ◽  
Vol 51 ◽  
pp. 33-43 ◽  
Author(s):  
Erla G. Hafsteinsdóttir ◽  
Kirstie A. Fryirs ◽  
Scott C. Stark ◽  
Damian B. Gore
Keyword(s):  
Contaminated Soil ◽  
East Antarctica ◽  
Phosphate Fixation ◽  
Casey Station

Rhabditid nematodes found from a rocky coast contaminated with treated wastewater of Casey Station in East Antarctica, with a description of a new species of Dolichorhabditis Andrassy, 1983 (Nematoda: Rhabditidae)

Zootaxa ◽  
2008 ◽  
Vol 1850 (1) ◽  
pp. 43 ◽  
Author(s):  
KENJI KITO ◽  
YOSHIKUNI OHYAMA
Keyword(s):  
New Species ◽  
Body Length ◽  
East Antarctica ◽  
Treated Wastewater ◽  
Taxonomic Analysis ◽  
Unknown Species ◽  
Wilkes Land ◽  
Rocky Coast ◽  
A New Species ◽  
Casey Station

Three unknown species of rhabditid nematodes were found from sediment collected in a rocky coast area at Budd Coast, Wilkes Land, East Antarctica. The sediment was contaminated with treated wastewater which had been discharged through a pipeline extending from Casey Station (Australia). The most abundant of the three species is described here as Dolichorhabditis tereticorpus sp. n. based on female specimens. Dolichorhabditis tereticorpus resembles Dolichorhabditis dolichuroides (Anderson & Sudhaus, 1985) but is distinguished by the features of body length, pharyngeal corpus, and vulval lips. The remaining two undetermined species, Rhabditidae sp. 1 and Rhabditidae sp. 2, are briefly reported because the specimens obtained were inadequate in condition or number for detailed taxonomic analysis. It is suggested that these three species are peculiar to this rocky coast, although it is not certain yet whether they are specific to the habitat contaminated with the discharged effluent of the station.

Estimation of Glacial Isostatic Adjustment uplift rate in the Totten glacier's outlet from GPS and GRACE

2020 ◽  
Author(s):  
Mahdiyeh Razeghi ◽  
Shin-Chan Han ◽  
Matt King ◽  
Paul Tregoning
Keyword(s):  
Time Series ◽  
High Resolution ◽  
Elastic Deformation ◽  
East Antarctica ◽  
Mass Change ◽  
Glacial Isostatic Adjustment ◽  
Change Model ◽  
Isostatic Adjustment ◽  
Elastic Rebound ◽  
Casey Station

<p>Glacial Isostatic Adjustment (GIA) refers to the gradual response of the solid Earth to the deglaciation of historic ice sheets.  This ongoing rebound is contributing to the measurements of gravity change and land deformation, respectively, by Gravity Recovery And Climate Experiment (GRACE) and Global Positioning System (GPS).  When these space geodetic data are used to quantify the present-day ice mass change, the effect such as GIA must be accounted for.  In this study, we developed a method to estimate GIA and elastic deformation by the present-day ice mass change in the GPS time series with the example of Casey station in East Antarctica.  We determined a high-resolution, present-day ice mass change model on the outlet of Totten Glacier and calculated the elastic rebound over the area.  Our high-resolution model indicated a total mass loss of 15.7 ± 0.5 Gt/yr on the outlet of Totten Glacier from 2002 to 2017 with the accelerated loss in the last half of the period.  We estimated the viscoelastic deformation attributed to GIA by removing the predicted elastic deformation from GPS measurements.  Four different GPS position solutions for the Casey station, the continuously operating GPS station near the area, were examined.  The estimated GIA signal appears to be within 0.3 – 1.3 mm/yr which shows its contribution on the vertical deformation between 30 – 60 % among different GPS solutions.  On the other hand, the vertical elastic deformation trend is predicted to be 0.7 mm/yr from the ice mass change model.  The GPS measured seasonal variation is explained equally by atmospheric-oceanic loading and degree-1 loading with a couple mm amplitude in vertical time series.  The elastic rebound from the present-day ice mass change also perturbed the horizontal displacement by 0.13 mm/yr in west and 0.21 mm/yr in north directions.  This is in the opposite to the plate motion of the East Antarctica around the Casey station and amounts approximately up to 10 % of the measured tectonic motion.</p>

In situcarbon dioxide levels in cushion and turf forms ofGrimmia antarcticiat Casey Station, East Antarctica

1992 ◽  
Vol 17 (2) ◽  
pp. 241-249 ◽  
Author(s):  
M. Tarnawski ◽  
D. Melick ◽  
D. Roser ◽  
E. Adamson ◽  
H. Adamson ◽  
...  
Keyword(s):  
East Antarctica ◽  
Casey Station

scholarly journals Identifying the Characteristics of Strong Southerly Wind Events at Casey Station in East Antarctica Using a Numerical Weather Prediction System

2005 ◽  
Vol 133 (12) ◽  
pp. 3548-3561 ◽  
Author(s):  
Neil Adams
Keyword(s):  
Surface Layer ◽  
Weather Prediction ◽  
East Antarctica ◽  
Katabatic Wind ◽  
Limited Area ◽  
Prediction System ◽  
Layer Flow ◽  
Wind Events ◽  
The Antarctic ◽  
Casey Station

Abstract Casey Station in East Antarctica is not often subject to strong southerly flow off the Antarctic continent but when such events occur, operations at the station are often adversely impacted. Not only are the dynamics of such events poorly understood, but the forecasting of such occurrences is difficult. The following study uses model output from a 12-month experiment using the Antarctic Limited-Area Prediction System (ALAPS) to advance the understanding of the dynamics of such events and postulates that what are often described as katabatic wind events are more likely to be synoptic in scale, with mid- and upper-level tropospheric dynamics forcing the surface layer flow. Strong surface layer flows that have a katabatic signature commonly develop on the steep Antarctic escarpment but rarely extend out over the coast in the Casey area, most probably as a result of cold air damming. However, the development of a strong south-southwesterly jet over Casey provides a mechanism whereby the katabatic can move out off the coast.

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