scholarly journals Streamflow, water-temperature, and specific-conductance data for selected streams draining into Lake Fryxell, lower Taylor Valley, Victoria Land, Antarctica, 1990-92

1995 ◽  
Author(s):  
Paul Von Guerard ◽  
Diane M. McKnight ◽  
R.A. Harnish ◽  
J.W. Gartner ◽  
E.D. Andrews
Keyword(s):  
Water Temperature ◽  
Specific Conductance ◽  
Taylor Valley ◽  
Victoria Land ◽  
Conductance Data ◽  
Lake Fryxell

scholarly journals Inorganic carbon-isotope distribution and budget in the Lake Hoare and Lake Fryxell basins, Taylor Valley, Antarctica

1998 ◽  
Vol 27 ◽  
pp. 685-689 ◽  
Author(s):  
Klaus Neumann ◽  
W. Berry Lyons ◽  
David J. Des Marais
Keyword(s):  
Carbon Isotope ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Ice Cover ◽  
Stable Stratification ◽  
High Productivity ◽  
Taylor Valley ◽  
Victoria Land ◽  
Lake Fryxell ◽  
Perennial Ice

One of the unusual features of Lakes Fryxell and Hnare in Taylor Valley, southern Victoria Land, Antarctica, is their perennial ice cover. This ice cover limits gas exchange between the atmosphere and the lake water, and causesa very stable stratification of the lakes. We analyzed a series of water samples from profiles of these lakes and their tributaries for δ13C of the dissolved inorganic carbon (DIC) in order to qualify the carbon flux from the streams into the lakes, and to investigate the carbon cycling with in the lakes. Isotopic values in the uppermost waters (δ13C = +l.3‰ to 5.3‰ in Lake Hoare, +0.4‰ to +3.0‰ in Lake Fryxell) are close to the carbon-isotope values encountered in the streams feeding Lake Fryxell, but distinctively heavier than in streams feeding Lake Hoare (δ13C= — 2.3%n to 1.4%). These ratios are much heavier than ratios found in the moat that forms around the lakes injanuary February (δC = -10.1%). in the oxic photic zones of the lakes, photosynthesis clearly influences the isotopic composition, with layers of high productivity having enriched carbon-isotope signatures δ13C= +2.7‰ to +6.1‰). in both lakes, the isotopic values become lighter with depth, reaching minima of 3.2‰ and 4.0% in Lakes Fryxell and Hoare, respectively. These minima are caused by the microbial remineralization of isotopically light organic carbon. We present DIC flux calculations that help to interpret the isotopic distribution. For example, in Lake Hoare the higher utilization of CO2aq, and a substantially smaller inflow of CO2 from streams cause the heavier observed isotopic ratios. Differences in the hydrology and stream morphologies of the tributaries also greatly influence the carbon budgets of the basins.

scholarly journals An Ablation Rate for Lake Fryxell, Victoria Land, Antarctica

1966 ◽  
Vol 6 (43) ◽  
pp. 129-133 ◽  
Author(s):  
R. A. Henderson ◽  
W. M. Prebble ◽  
R. A. Hoare ◽  
K. B. Popplewell ◽  
D. A. House ◽  
...  
Keyword(s):  
Ablation Rate ◽  
Ice Cover ◽  
Katabatic Winds ◽  
Taylor Valley ◽  
Victoria Land ◽  
Lake Fryxell ◽  
Novel Method ◽  
The Difference

AbstractThe average yearly net ablation rate on permanently ice-covered Lake Fryxell, Victoria Land, Antarctica, is 30 to 40 cm. This figure was calculated by a novel method utilizing a record of ablation which is incorporated in the ice cover of the lake. These values are higher than those measured on Ross Island 80 km. to the east; the difference in ablation rates for the two areas is attributed to the prevalence of katabatic winds in the climate of Taylor Valley. The Lake Fryxell ablation figure is applied to nearby Canada and Commonwealth Glaciers in the calculation of their ice budgets.

The Holocene environmental history of Lake Hoare, Taylor Valley, Antarctica, reconstructed from sediment cores

2011 ◽  
Vol 23 (3) ◽  
pp. 307-319 ◽  
Author(s):  
Bernd Wagner ◽  
Sabrina Ortlepp ◽  
Peter T. Doran ◽  
Fabien Kenig ◽  
Martin Melles ◽  
...  
Keyword(s):  
Environmental History ◽  
Late Holocene ◽  
Sediment Cores ◽  
The Holocene ◽  
Sedimentary Characteristics ◽  
Fine Grained ◽  
Taylor Valley ◽  
Victoria Land ◽  
History Of ◽  
Lake Fryxell

AbstractUp to 2.3 m long sediment sequences were recovered from the deepest part of Lake Hoare in Taylor Valley, southern Victoria Land, Antarctica. Sedimentological, biogeochemical, and mineralogical analyses revealed a high spatial variability of these parameters in Lake Hoare. Five distinct lithological units were recognized. Radiocarbon dating of bulk organic carbon samples from the sediment sequences yielded apparently too old ages and significant age reversals, which prevented the establishment of reliable age-depth models. However, cross correlation of the sedimentary characteristics with those of sediment records from neighbouring Lake Fryxell indicates that the lowermost two units of the Lake Hoare sediment sequences were probably deposited during the final phase of proglacial Lake Washburn, which occupied Taylor Valley during the late Pleistocene and early Holocene. High amounts of angular gravel and the absence of fine-grained material imply a complete desiccation with subaerial conditions in the Lake Hoare basin in the middle of the Holocene. The late Holocene (< c. 3300 calendar yr bp) is characterized by the establishment of environmental conditions similar to those existing today. A late Holocene desiccation event, such as proposed in former studies, is not indicated in the sediment sequences recovered.

scholarly journals An Ablation Rate for Lake Fryxell, Victoria Land, Antarctica

1966 ◽  
Vol 6 (43) ◽  
pp. 129-133 ◽  
Author(s):  
R. A. Henderson ◽  
W. M. Prebble ◽  
R. A. Hoare ◽  
K. B. Popplewell ◽  
D. A. House ◽  
...  
Keyword(s):  
Ablation Rate ◽  
Ice Cover ◽  
Katabatic Winds ◽  
Taylor Valley ◽  
Victoria Land ◽  
Lake Fryxell ◽  
Novel Method ◽  
The Difference

AbstractThe average yearly net ablation rate on permanently ice-covered Lake Fryxell, Victoria Land, Antarctica, is 30 to 40 cm. This figure was calculated by a novel method utilizing a record of ablation which is incorporated in the ice cover of the lake. These values are higher than those measured on Ross Island 80 km. to the east; the difference in ablation rates for the two areas is attributed to the prevalence of katabatic winds in the climate of Taylor Valley. The Lake Fryxell ablation figure is applied to nearby Canada and Commonwealth Glaciers in the calculation of their ice budgets.

Glacial and postglacial sedimentation in the Fryxell basin, Taylor Valley, southern Victoria Land, Antarctica

2006 ◽  
Vol 241 (2) ◽  
pp. 320-337 ◽  
Author(s):  
Bernd Wagner ◽  
Martin Melles ◽  
Peter T. Doran ◽  
Fabien Kenig ◽  
Steven L. Forman ◽  
...  
Keyword(s):  
Taylor Valley ◽  
Victoria Land
Sign in / Sign up

Export Citation Format

Share Document