As part of the McMurdo Dry Valleys, Long Term Ecological Research (MCM-LTER) project in Antarctica, a LiCl tracer was injected into Andersen Creek in the Lake Hoare basin on 17 December 2012. The purpose of this study was to determine the fate of stream water below lake ice. Injection began at 20:30 hours and continued for two hours. Water samples were collected at half-hour intervals from 5 stream sites and 15 ice boreholes over a 4 hour period beginning at the start of injection. Samples were analyzed for major cations and major anions using an ion chromotograph at McMurdo Station. Results show that stream water moved West along the lake shoreline below the moat ice, and did not generate interflow below the perennial lake ice
Dataset ID:
300
Associated Personnel:
48
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Related publications:
Pressure-driven, shoreline currents in a perennially ice-covered, pro-glacial lake in Antarctica, identified from a LiCl tracer injected into a pro-glacial stream
Short name:
LakeHoareTracer_Dec_2012
Locations:
Andersen Creek at H1
Data sources:
LakeHoareTracer_Dec_2012
Methods:
Between 20:30 and 22:30 on 17 December 2012, a concentrated LiCl solution (Li+ 49 g/L, Cl- 251 g/L) was injected into Andersen Creek at a rate of 500 mL/min during a 74 L/sec discharge event. Water samples were collected from 5 stream locations and 15 ice boreholes at roughly 30 minute intervals over a 4 hour period, and analyzed for major cations and anions at McMurdo Station ion chromatography.
Additional information:
S, I, T Prefix indicates: ice free stream sample (S); inlet connecting stream moat to shoreline moat (I); and ice borehole transect (T)
s, d Suffix denoting: shallow water sample collected directly below lake ice (s); deep water sample collected 1 m below lake ice (d)
ND. Concentration below detection limit of ion chromatograph. Sample depths are relative to the ice surface
