We Blogged It!
Well, the other day I bombarded you with information and no images (Dec 20 blog). The next several posts will have more images than text as I try to catch you up on what Team ASPIRE has been doing:)
I'll begin with images of the successful mooring recovery. Two out of the four moorings were recovered after they had spent two years on the seafloor collecting data about the ocean's physics. According to Tish, that's a very good average. She adds: "Getting one of these back is harder than hitting a professional baseball!"
On Dec 15 the Slocum-Webb glider was deployed near the Dotson Ice Shelf. Tina Haskins, glider expert from Rutgers led the team of scientists and RPS Marine Techs out in a zodiac to deploy the glider in the middle of the open polynya (73°22S 113°53W). The glider "glides" up and down through the top 100m of the water column measuring temperature, salinity, and optical properties (like chlorophyll fluorescence) as it moves across the region. It rises to the surface and sends home data by satellite. "Home" is at Rutgers who then emails the data back to the NBP.
In the next post we'll look at the sediment trap deployment!
Question of the Day
- What are Polynyas and why are they important to study?
Polynyas, are recurring areas of seasonally open water surrounded by ice.
Energy and material transfer between the atmosphere, polar surface ocean, and the deep sea in polynas provide polar ecosystems with just the right ingredients needed for high productivity and intense biogeochemical recycling.
Polynyas may be the key to understanding the future of Polar Regions since their extent is expected to increase with anthropogenic warming.