ENV100Y5 Lecture Notes - Lecture 18: North Atlantic Deep Water, Antarctic Bottom Water, Atlantic Cod

• School: UTM
• Department: Environment
• Course: ENV100Y5
• Professor: Barbara Murck

Document Summary

Eastern canadian and new england fisheries have fished cod for generations. Long-distance ships, fish-finding technology, and poor management destroyed the fishery. Stocks collapsed under canadian management within a couple decades. Influences climate; teems with biodiversity; provides habitat; facilitates transportation, recreation, and commerce; provides resources; interacts with the atmosphere, geosphere, and biosphere. Mid atlantic ridge is taller than everest. Most ocean floor features are controlled by plate tectonics. We analyze the ocean floor by analyzing surface waters, high parts of the ocean floor are reflected on the surface. Oxygen added by plants, bacteria, and exchange with the atmosphere. Surface water is heated by solar energy. Colder, saltier water is denser and sinks. Ocean temperature is more stable than land temperature. Waters high heat capacity - takes much more energy input to warm water than to warm air. Ocean layers are defined by physical characteristics. Point where the temperature decreases rapidly, slanted on.