Volcanoes are mountains or hills, that have a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth`s crust. The eruption might take through a day or it may last up to years. It is also one of the most disastrous natural calamities on earth. Mount Pinatubo was one of the most destructive calamity in the 20th century. It affected the great amount of area in the Southeast Asia.
There are differences between the two natural disasters. Here are the differences:
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Volcanic Eruption
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Typhoons and Hurrican
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Magnitude
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No single feature to measure how big the
volcano is.
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There is the intensity to measure hyrricane
on the saffir-simpson scale. This is to measure the wind speed and air
pressure in the scale of 1-5.
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Duration
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It can last from less than a day to years.
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It can last till days and up to years.
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Spatial Distribution
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Volcanoes can be found in continental
settings or oceanic settings. This means that volcanoes can be found in
either land or underwater.
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Severe
Cyclonic Storm: North
Indian Ocean
Tropical Cyclone: South and Southwest Indian Ocean Severe Tropical Cyclone: Southwest Pacific Ocean and Southeast Indian Ocean
The more familiar term,
"hurricane", is used in the Atlantic Ocean and the eastern Pacific
Ocean
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Predictability
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Volcanic eruptions are very difficult to
predict, however, it is said that the beginning of a volcanic eruption is
easier to predict than to predict the end of a volcanic eruption.
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Hurricanes are very erratic; prediction is
difficult
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Regularity and
Frequency
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Shown in the Volcanic Explosivity Index
table, non-explosive to gentle explosions occur frequently, and daily,
compared to very big volcanic eruptions with a plume height of >25 km,
which happen about once every 10,000 years.
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See the table below
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Storm Frequency
Tropical storms and Typhoons by month, for the period 1959–2011 (Northwest Pacific) |
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Month
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Count
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Average
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Jan
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25
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0.5
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Feb
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12
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0.2
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Mar
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23
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0.4
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Apr
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34
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0.6
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May
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63
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1.2
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Jun
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90
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1.7
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Jul
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205
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3.9
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Aug
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296
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5.6
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Sep
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262
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4.9
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Oct
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210
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4.0
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Nov
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133
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2.5
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Dec
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66
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1.2
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Annual
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1419
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26.8
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