Homepage Homepage
Project Overview What's New People Data Field Notes Papers & Presentation Links
The small-scale survey:
Hydrographic Stations

What happens at a hydrographic station during the small-scale survey?

The helicopter lands on the sea ice, near open water or thin ice.

(2) A small winch is used to lower a Seabird CTD-O2 instrument down to ~550 m or the bottom, whichever comes first. This provides profiles of temperature, salinity, and dissolved oxygen as a function of depth.

(3) An XCP is deployed in the hole, providing a profile of how currents change with depth.

(4) A Niskin bottle is used to take a sample of water at ~6 m depth, to be analyzed later for salinity, dissolved nutrients and barium, and oxygen isotopes.

Then we take off and fly to another site or back to home base!

Polar Science Center
Applied Physics Laboratory
1013 NE 40th Street
Seattle, WA 98105

University of Washington

This material is based upon work supported by the National Science Foundation under Grant No. 0230427.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the
National Science Foundation.

National Science Foundation logo

Contact the Arctic Switchyard website manager

Contact the chief scientist with project related questions