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.
During the 16-17 season, new equations were determined for ELB and WLB to account for lake level rise. These equations were better able to correct the CTD measured depths at the deeper depths of these lakes. The equations are as follows:
ELB: y = -0.0028x2 + 1.0437x + 0.5828WLB: y = -0.0017x2 + 1.0179x + 0.6418
Note that the depth calculated from the CTD pressure sensor can vary by up to 0.6 m depending on atmospheric pressure at the time of the cast.
Note that no corrections have been determined for other lakes profiled.
For more details on wire corrected data, see Spigel and Priscu 1996.
4 Graphs not inserted here, since this XML specification cannot describe nor carry them adequately. (to be revised -- now we can include images)
A new CTD (Seabird 19plusV2) was purchased in 2019 and arrived halfway through the season. Some data from 2019 was collected with a Seabird SBE 19 CTD until the new instrument arrived. Depth correction equations (where x= CTD recorded depth in meters and y = wire corrected depth in meters) for both instruments are as follows:
There is no conductivity data for the deep waters of ELB during the 19/20 and 22/23 season because Seabird messed up the conductivity calibrations.