GEO 110 Lecture Notes - Overfishing, Pacific Halibut, Bottom Trawling
31 Aug 2013
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Gps: retreat, actual location determine longitude and latitude, direction of movement, location, elevation (height) Radar: thickness, size, use regardless of condition of atmosphere or weather. Water: gas, liquid, solid: 2. 8% fresh water. Can be found in: antarctica (most-91. 4), greenland, north america, asia, rest of the world. 3. 1% of world is covered with glacier. Glacier: ice and rock, moving down hill as a result of gravity. Ice sheets: antarctica and greenland, ice shelf: extend into ocean (ross ice shelf, thermal: Polar- below frezzing point, liquid water never formed: rock- no visible ice, move slowly, reconstritued glacier- pressure joins ice blocks, ice falling. Moulin- streams in icebergs (in the middle) Over the continental shelf (near shore which makes it more accessible to humans) Fish are being caught at a rate faster than they reproduce. As the larger fish disappear the fleet is targeting smaller fish at the lower rungs of the food chain.
