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June 7: Ienisseï free of ice

The Ieniseï is now totally free of ice and the last icebergs have been replaced by fisherman’s boats. The access to the field is easier since the branche has defrosted and enables us to  sample on a daily basis the first stage of the flood recession. Windy days might be a harsh time when sampling on board of our small embarcation because of the waves it creates on the river.
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May 22: Peak discharge

After a week waiting between ice break and ice-jam, looking at the ice’s movement, we eventually managed to sample by boat.
At the same time SPOT 5 was taking a picture of the river…A good thing to calibrate the new research project.
For the dissolved organic matter’s fluorescence we have almost the same value as the one we measured last year at the same period.
We have the feeling to be right at the peak discharge.

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May 16: Forced vacation

Yesterday, everything looked calm and quiet, but this morning, the Ienisseï has become a chaotic ice field.
It’s impressive how in  few hours, we move from an equilibrium system to chaos.
All morning long, ice moved until a new ice-jam was formed and blocked everything, once again.
For us, it is forced vacation…until open water reappearance.

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May 15: Everything seems calm

Second day of sampling in hovercraft.
Ice free spots are more and more important but patches of ice are still stable.
Ice is breaking and it won’t be long for it to move quickly, although tonight water level seems to be stabilized and everything looks very calm.
Today, the quantity of sediments is less important, but the color of the dissolved fraction is darker.

 

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May 14: Ice is slowly breaking

We are getting better in managing spring flood sampling.
Indeed we already sampled with the hovercraft two days after the last sample with snowmobile (6 days last year) and we are confident in having high-resolution sampling of the spring flood peak.
Sacha (hovercraft pilot) did a great job in a typical white day (snow flurry and fog) to find a ice-free sampling spot (4 meters wide channel).
Harder filtration, Better color, Faster flow, Stronger water, Our Work Is Never Over.