Volcanic outgassing

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Where does volcanic outgassing occur?
Active or passive volcanic zones associated with tectonic plate boundaries. In addition to places with no current volcanic activity, such as the hot springs.
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What is an example of a major degassing as a pulse?
The 1991 eruption of Mt Pinatubo in the Philippines, part of an island arc created by a subduction zone.
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Where are volcanically active mid-ocean ridges often found?
On growing edges of tectonic plates. Constructive plate boundaries zigzag 37,000 miles across the sea floor.
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Name two other locations that contribute to co2 in the atmosphere?
Kilauea in Hawaii and tectonic collision zone volcanoes like Etna in Sicily.
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Only a small portion of carbon in continental river runoff end up buried in ocean sediments but why is it important?
Important for long term carbon stores with fluxes operating over millennia unlike most territorial systems.
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What is the carbon cycle pump?
The processes operating in oceans to circulate and store carbon. There are three sorts: biological, carbonate and physical.
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What is the thermohaline circulation?
The global system of surface and deep water currents is driven by temperature and salinity differences between areas of oceans.
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Other cards in this set

Card 2

Front

What is an example of a major degassing as a pulse?

Back

The 1991 eruption of Mt Pinatubo in the Philippines, part of an island arc created by a subduction zone.

Card 3

Front

Where are volcanically active mid-ocean ridges often found?

Back

Preview of the front of card 3

Card 4

Front

Name two other locations that contribute to co2 in the atmosphere?

Back

Preview of the front of card 4

Card 5

Front

Only a small portion of carbon in continental river runoff end up buried in ocean sediments but why is it important?

Back

Preview of the front of card 5
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