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Sediment Traps: What do they catch?

12/27/2010, 10:52 AM by Lollie Garay
Anton : What's in the bag???<br/><br/>Credit: Tish Yager
Anton : What's in the bag???
Photo Credit: Tish Yager

Dec 27

In the polynya

 Anton Post recently orchestrated the deployment of a moored sediment trap that will be in place in the polynya for about one year. The traps collect weekly to biweekly data that tell us how much of the biological production from the surface waters is sinking to the deep waters of the polynya (to feed the deep pelagic or benthos ecosystem). It also gives us information about the sequestration of carbon dioxide from the atmosphere.

The mooring is deployed top first, with all the pieces strung along a line as the ship steams away from it. The last thing to go in is the anchor. When they unhook it, the anchor sinks and pulls the whole mooring to the bottom right on the perfect spot, where it will stay until next year!

Hope all of you enjoyed a great weekend! Thanks to family and friends who have sent in holiday greetings and regards…stay connected with the blogs ☺

Lollie

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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.