Deep Ocean Flashcards

1
Q

Direct Wind Drag

A

Causes convergence and piling up of surface waters around the polar front

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2
Q

Intermediate water

A

More dense than upper and surface water but less dense than deep sea water

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3
Q

Mediterranean water

A

Has the effects of its v. high salinity offset by a high temp therefore it only has INTERMEDIATE DENSITY

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4
Q

Characteristics of Mediterranean Water

A

High Salinity- 35.0-36.2%
High temperature- 8-10C

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5
Q

Pacific Subarctic Intermediate Water

A
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6
Q

Two principle original deep water masses

A

North Atlantic Deep Water (NADW)
Antarctic Bottom Water (AABW)

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7
Q

North Atlantic Deep Water (NADW)

A
  • Formed by winter cooling of high salinity surface water in N. Atlantic
  • Only moderately cold (2-5C) and highly saline (34.9%)
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8
Q

Antarctic Bottom Water (AABW)

A
  • formed by sea ice freezing and is the most widespread of all types of ocean water and is found in all ocean basins
  • very cold (-2 to 1ºC) but has only moderately high salinity (34.6 to34.7‰)
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9
Q

Formation of NADW

A

= a mixture from separate sources in the Norwegian and Greenland Seas and the Central Arctic

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10
Q

Formation of AABW

A

Generated by the formation of sea ice . The formation of sea ice increases the salinity of the residuum

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11
Q

Polynya

A

Continuing open water in a region of sea ice formation

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12
Q
A
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