Hopefully the weather remains calm for awhile. Winds are calm and our light snow stopped earlier in the day. We will do it again in the north basin (170 m deep) today if the winds remain calm.Įvening Update: Quiet evening here. That basin is 102 m deep where we made the profiles. We spent several hours making a detailed water quality profile of the south basin that goes anoxic at 80 m. Snowy here the last two days, but no wind so not too bad. Last night was pretty windy with 40 knot winds and occasional higher gusts and this morning those winds while calming some, are still prevalent so we will start work outside a bit later once the winds drop down to a reasonble level. These measurements will help nail down with great accuracy the elevation of the lake ice-cover, location of boulders floating on the lake (that move with the ice-cover a little each year), paleo-shorelines, sample locations etc. We also began obtaining highly accurate, precise GNSS (GPS) measurements of features here at Untersee using a Trimble GNSS System The color chart is named Sherwin-Williams paint colors and it is quite popular among paint manufacturers and color designers. The first one is named Filmy green and also has a refference code SW 6190 assigned to it. We will obtain several more cores from this area as well as other regions of the north basin which remains oxic to the bottom (170 m).ĭenis Lacelle and Andre Pellerin will be conducting geochemical analyses of the core material and pore water that was obtained once they return home and the samples catch up with them a few weeks later. Filmy green (SW 6190) vs Zephyr Breeze (422-1DB) This color comparison involves two colors that comes from different color collections. We were able to recover a 50 cm sediment core from the deepest region of the south basin (102 m) which is also an area that goes anoxic and has high levels of dissolved methane.

Yesterday was quite productive at Lake Untersee.

Arctic zephyr 2