Kilauea Volcano Case Study

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G208: Volcanoes Chapter 7 : Kilauea, Hawaii 1. What is "volcanic tremor"? (page 94, para 2 to page 95) A volcanic tremor is a continuous, low-frequency vibration of the ground. 2. What do earthquake swarms indicate? (page 94, para 2 to page 95) Earthquake swarms indicate that new fractures were forming. Swarms can be used as an early indication that magma from a storage zone is being injected into the rifts were these new fractures are happening. 3. What is "summit deflation"? (page 94, para 2 to page 95) Summit deflation, which is measured by tilt meters in parts per million, is when the slope of a volcano changes usually relatively prior to an eruption. 4. How does Kilauea's magma move upward…show more content…
An inward tilt during eruption is much steeper than that of re-inflation. 6. What are "vesicles"? (page 99, para 1) Tiny bubbles that have gas trapped in them after the solidifying of the magma after eruption. 7. How does the average rate of magma production from the Hawaiian volcanic vents compare to the about of magma withdrawn from only just beneath the summit of the volcanoes. what implications does this have for the future of Hawaiian eruptions? (page 99, para 1 to page 100) The average production of magma is about 100 million cubic meters per year. The amount of magma taken from beneath the summit has been small compared with the total amount of magma that has been erupted although the production rate of new magma has mostly kept up with the eruption rate. The rates of magma distribution could mean a very long lasting eruption. 8. Why does a fissure eruption's characteristics change over time? (page 100, para 1 to page 102) Over time magma can melt through the wall rocks and enlarge the plumbing allowing for more flow and a centralized vent such as the one in Hawaii. Smaller fissures allows less lava to flow and can sometimes allow lava to slow and heal the
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