By Christophe Le Gall |
Thursday, 16 June. At 13:15, the meteorology technician has to do one of her daily task: preparing and launching a weather balloon. This balloon is filled with helium, so it can reach more than 30 km height, and equipped with Temperature-Humidity-Pressure sensors. It can transmit its signal during its 2-hours ascension.
After that, we have another meeting for task assignment for everyone in the BURSTER and DEFROST teams. Each person in the team has been assigned a mission for the sampling days, which will arrive in few days. Everyone is impatient to start his/her tasks!
Friday 17 June. This morning, the oceanographic team has tested his CTD probe and the “Rosette” devices to collect water sample. It consists of a system of 24 bottles, each one can be opened at any depth you need, coupled to real-time measure (like depth, temperature, oxygen or salinity) to ensure a good choice of each sample.
After sampling, they can collect water to proceed to chemical analysis, like nutrients, carbonate system parameters, dissolved gas and so on.
In the beginning of the afternoon, there was another test. The multicorer device was assembled, so the sedimentologist and paleontologist could get familiarized with this device.