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34 Cards in this Set
- Front
- Back
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traps
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Rapid Volcanism on continents that has a mantle source
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possible causes
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mantle plume (hot spots), extraterrestrial impacts, continental rifting
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deccan traps
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killed dinosauras, on the opposite side of the planet from where an asteroid hit Yucatan, so could be a combination of rifting and mantle plums caused by extraterrestrial impact
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deccan traps
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killed dinosauras (k-T extinction event), on the opposite side of the planet from where an asteroid hit Yucatan, so could be a combination of rifting and mantle plums caused by extraterrestrial impact
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siberian traps
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P-T extinction, largest in history, duration of 1 mil years,
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columbia river basalt
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yellowstone hot spot, smallest of huge basalt events
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sturzstroms
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Movement of Highly fluidized rock flows
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ages
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late paleozoic ice age-> Late Paleocene Torrid-> Late Cenozoic Ice Age
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Measurement of 18O/16O ratio in CaCO3 fossils is indicator of climate when organism lived....
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High 18O/16O-> colder climate
Low 18O/16O-> warmer climate |
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Eccentricty
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how circular the orbit around the earth is
dominant control of glacial advance and retreat |
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tilt
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more tilt- bigger diff b/w seasons
less tilt- more homogenous |
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Epica
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ice core from southern hemisphere (antarctica)
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Vostok
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ice core from nothern hemisphere
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tropical storm
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>63
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hurricane
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>119
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hurricanes are from....
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the tropics (low-lattitudes)
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indian ocean hurricane
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cyclone
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western pacific hurricane
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typhoon
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bermuda high small and to the north...
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curve northward around the High and have little or no effects on coastlines
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bermuda high strong and extensive..
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guides hurricanes along east coast of US
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bermuda high drifted south towards Fl
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directs hurricanes into carribean sea and gulf of mexico
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North Atlantic Oscillation (NAO)
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Describes the shifting of atmospheric pressures over the ocean
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Carribean Sea/ Gulf of Mexico
Don’t hit west coast of the US as much as Atlantic hurricanes hit east coast b/c… |
Trade winds blow most of the hurricanes westward out into the Pacific
There is a marked diff in seawater temperatures Pacific is bathed by cold water from the California Current coming down from Alaska |
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fetch
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water surface the wind blows across
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Rogue wave
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when various waves become briefly synchronized and form a spectacularly tall wave
Quickly disunite |
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Swell
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the result of the constructive and destructive interference of multiple sets of ocean waves when they collide
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Wave refraction
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they bend as they approach the shore
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Longshore current
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water moving along the coast, hitting the beach at an angle but pulling it back perpindicular to the shore
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Requirements for development of hurricane
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Seawater at least 27 deg C (80 deg F) in upper 60 m
Air must be warm, humid and unstable Weak upper-level winds So that lots of this air can rise and stay up there w/o getting blown away so it can form its own system |
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Highest part of the storm surge
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is the right hand side of the eye
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Summer weather conditions
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are relatively calm- smaller but more frequent waves
Waves build sandy beach |
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Winter waves are...
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energetic- tall, spread apart waves
Waves erode beach sand and carry it offshore |
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deeper water
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faster waves
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shallow water
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slower waves
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