Marine 1 Flashcards
Arctic ocean Basin
Shelf is very large in Eurasia, smaller in North America
Water mass
A large volume of water with unique properties of temp, salinity, and density that extends horizontally thousands of km
All oceans are structured b
Water masses
3 Water masses occur in Canada basin of the Arctic Ocean
Arctic/Polar water
Atlantic Water
Bottom Water
Brine rejection
As the surface of the ocean cools, ice forms and as the ice continues to develop, salt is ejected from the growing ice through this process
Major process in driving ocean currents
Northward-flowing Atlantic Water is the major means of
Heat advection toward the Arctic and strongly affects sea ice distribution
3 components of marine habitats
Ice-covered seas
Open seas
Benthic habitats
Are marine habitats highly seasonal
Yes, but water provides a thermally stable environment
What moves sea ice
Wind, currents, tides
Major variables and defining features
Floe size
Source
Form
Development
Deformation
Ice cover
Estuary
Nearshore water are shallow with sunlight penetrating deeper
Estuaries though have high turbidity due to sediment loads
Belugas and climate change
Migration influences by increasingly altered climate change
Benthic
Species that live and feed in close association with ocean bottom
Pelagic
Species that live and feed in the water column
Epontic
Species that live on the underside of sea ice
