This one hour webinar is a great look at the PolarTREC 2014 Arctic expeditions. Each teacher presents a little about the research projects, implementation in the classroom, and outreach into communities.
Density currents drive 3D movements within the world’s oceans that dwarf surface currents by volume. Density-driven movements due to temperature/salinity differences keep the world’s oceans well mixed & help to re-distribute heat from tropical areas towards polar areas. Resultant upwelling creates some of the world’s richest ocean ecosystems. Density movements known as turbidity currents are the world’s largest