Short coring extravaganza

While we are waiting for the equipment to arrive in Anchorage, we retrieved the left behind anchors and ropes. Also, we collected 19 short cores. Most of them will be used for mapping and analyzing the characteristics of the 1964 megaturbidite in the deep basin. Also some will be used for geotechnical slope stability and…

A not so perfect storm

Last Thursday, we were pulling up a 3m-core when suddenly winds came up, causing dangerously high waves in only half an hour. We secured our equipment and took off with the boat. Friday, the storm reached his peak, creating waves of almost 3 meters! Therefore we could not go on the lake to check our…

The Game of Cores

A few days ago we finished our first coring location. In total we took eight cores of three meters, i.e. 0-2 m, 3-6 m, 7-10 m, 11-14 m and the overlaps 1-4 m, 5-8 m, 9-12 m, 13-16 m. We also collected two short cores. So we retrieved in total 16 meters of sediments. It…

Deep Coring for Dummies

In case we want to core from 0-3 m, which is from the lake bottom down to 3 meters in the sediments below, we will follow the next scenario. First we put down the ground plate with the 3 tubes and funnel attached on top. This installation on the lake bottom (200 m deep) will…

Anchormen

Once we found the coring location on the lake with the GPS, it is important that the platform stays fixed on the same spot, because we have to core several days in a row in the same hole. Therefore, we first started with anchoring our mothership. We measured the length of the anchor ropes, as…

Ikea-ing in the wild

A few days ago, we built the coring platform “Ikea style”:  we unloaded a very compactly packed boxtruck, then, we laid out the different bits and pieces of the platform and we put it back together, very slowly, with the usual mistakes and missing bolts… We also had a look at the different parts of…

Preparation is half the battle

This is so true for a coring campaign. Before heading to the wild waters of Skilak Lake, we made sure that all the material that was necessary for coring, was present and ready for operation. Therefore, we spent a few days in the warehouse of the USGS. We bought missing supplies. We loaded the truck,…