Hawaii 2 - Ongoing eruption Kilauea Volcano 1983 present...

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1 Ongoing eruption, Kilauea Volcano, 1983 - present Eruptions on Hawaiian volcanoes occur at the summit caldera or along one of the two narrow rift zones. This is because magma moves upwards from a shallow magma chamber (3-4 km below the summit caldera) or forces itself laterally along deep cracks and fissures that form the rift zones.
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2 Kilauea’s caldera and east rift zone Map showing the location of the eruption site (Puu Oo) along Kilauea’s east rift zone (ERZ). Aerial view of the summit caldera and down the east rift zone towards the Puu Oo eruption site. Map of lava flows from 1983 to the present
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3 The first few days Typical of Hawaiian eruptions, this one started from long fissures near a prior eruption site of 1977 The only casualties were burning forests. Note the strange lava casts on the trees. Building the spatter cone of Puu Oo Activity focused on a single vent, starting to build the Puu Oo Cone. This forest was rapidly replaced by ash and aa flows. By 1984 the Puu Oo cone had grown quite substantial - note the lack of trees.
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4 Between 1983 and 1986, the eruptions were very episodic, occurring about once a month, each one lasting for a few days. Here is a view down the
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This note was uploaded on 02/22/2012 for the course GEA 3000 taught by Professor Staff during the Fall '09 term at UMass (Amherst).

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Hawaii 2 - Ongoing eruption Kilauea Volcano 1983 present...

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