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Unformatted text preview: Homework 3 (Due in 3.24) 200928005811033  � � 1. How deep is a typical mixed layer if mixed by wind? How deep can it reach if driven by cooling? Wind-stirred mixed layers do not extend much deeper than 100 or 150 meters and can reach this depth only at the end of winter. On the other hand, infrequent vigorous cooling at the sea surface can cause the mixed layer to deepen locally to several hundred meters, or even to more than 1,000 m in some very special subpolar and polar locations at brief times (hours) in late winter. 2. What are the typical vertical temperature and salinity profiles in the subtropical and subpolar regions of the North Pacific? Typical temperatures at subtropical latitudes are 20°C at the surface, 8°C at 500 m, 5°C at 1,000 m and 1 to 2°C at 4,000 m. Typical temperatures at subpolar regions of the North Pacific are 9°C at the...
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- Spring '07
- North Atlantic Ocean, North Pacific Ocean