16th – 17th October 2012
It was a stormy night through Tuesday and Wednesday, with gale force winds (F8-9) at times gusting to hurricane force (F12). We lost around 18 hours of survey time due to the large southerly swell (8m) and as a result it was deemed to poor by the Captain to turn northwards on our inbound transect. So we continue slowly southwards pointing the ship into the weather. It was a bumpy 24hours which made for spectacular viewing.
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| Rough seas (source: Aimee Black) |
The weather system passed through quickly and seas dropped over the course of Thursday off to produce a nice day much to the relief of all.
As part of the annual program, Conductivity, Temperature and Depth (CTD) casts are undertaken at pre-determined positions along the cruise track. This allows us to compare the conditions from year to year. The CTD measures conductivity/salinity and temperature at depth of the ocean. The information is relayed in real time to a computer on board. This gives a picture of the environmental conditions underneath the surface of the water, which may then be used to analyse possible correlations between the herring and their environment.
Blog by Ciaran O'Donnell & Aimee Black
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| CTD being lauched (source: Aimee Black) |
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