The Disasters And Impacts Of Mount St. Helens

1731 Words 7 Pages
1 Introduction
Since the eruption in 1980, the area around Mount St. Helens has rebounded in ways that were somewhat unexpected, with recovery coming not only from the surrounding area, but from within the barren expanse that remained after the eruption. While not the first eruption overall, this eruption was the first to occur on the U.S mainland in a time when modern scientific monitoring could track the events associated with it. Smaller earthquakes in March of 1980 eventually led to the total collapse of the north face of the volcano which destroyed a massive area of land (Lindsey).
2 Eruption Background Information
The 1980 eruption resulted in thick layers of ash, mud, and pumice being deposited by the initial blast and pyroclastic flow
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Helens completely decimated a massive area of land through the initial eruption, the pyroclastic flow, and the numerous landslides and lahars that occurred throughout. However, this area experienced surprising levels of ecological recovery, especially when it came to the overall plant cover. The areas further from the blast were quicker to rebound from the destruction than the much closer areas such as the Pumice Plain, which is just now showing more significant signs of recovery. Sections that were cleared by the mudflows recovered at different rates depending on the seed dispersal capabilities of the plants in the area (Del Moral, 1998). Presumably, seeds with dispersal methods relying on factors such as wind or birds would be more likely to repopulate the cleared areas than other …show more content…
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