As part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project, ice thickness and density are measured annually for several lakes located throughout this region of Antarctica. Ice thickness is measured from the bottom of the ice cover to the piezometric water level and to the top of the ice cover. Because most limnological sampling holes are drilled in low-lying areas, it was thought that ice thickness measurements were biased. Therefore, random ice thickness measurements were performed in a 1000 m2 sampling grid on each lake in past years.
Dataset Results
1989-11-16 to 2023-01-07
10.6073/pasta/515c54434ee203a7611ed7db1e2501ae
67
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a series of Taylor Valley lakes have been monitored for conductivity, temperature, and depth (CTD). A Seabird instrument was used to record CTD profiles in these perennial ice covered lakes.
Date Range:
1993-12-06 to 2023-01-07
Data sources:
DOI:
10.6073/pasta/650871571843bde5e0db6fb52cf549a4
Dataset ID:
88
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, PAR is measured at one depth during primary production experiments in Dry Valley Lakes. This data set quantifies instantaneous underwater PAR at 10-meter depths in Lakes Bonney and Hoare, and at 7-meter depth in Lake Fryxell (depths vary after 2008, check data file for actual depth). Ambient PAR was also measured at the air-ice interface from each of these lakes.
Date Range:
1995-09-14 to 2022-12-22
Data sources:
DOI:
10.6073/pasta/382094c181c137173457b2d5866cc042
Dataset ID:
3001
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, lakes are monitored for photosynthetic active radiation (PAR) levels. This data set exemplifies the vertical profile of underwater PAR profiles in perennial ice covered lakes and ambient PAR measured at the air-ice interface. Profile data can be used to calculate extinction coefficients for the water column and ice layer.
Date Range:
1993-10-28 to 2023-01-07
Data sources:
DOI:
10.6073/pasta/89139a7d28cef6b4dce8b4ff29b39d0c
Dataset ID:
46