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Why are eruptions deep in the ocean calmer than eruptions on land?
Wiki User
∙ 12y ago
Eruptions in the deep ocean differ from eruptions on land for several reasons. The deep ocean eruptions are often tmes and depending on cause as well as location from basaltic magma. This type of magma is not known for its explosivity. The magma is the type that build the hawaiian volcanoes and more or less when erupting flows (Although it is capable of explosive eruptions). The other major factor is for an explosive eruption to be generated the magma must be very viscous to allow the build up of gas bubbles. The second half and what actually causes the explosive eruption is the explosive release of this gas. When an eruption occurs in the deep ocean it is not explosive due to the fact that the gas cannot decompress from the magma explosively due to the extreme pressures exerted by the water at such depth. Even if it were the right type of volcano that could generate explosive eruptions with the pressure it would be unable to do such a thing.
Wiki User
∙ 12y ago
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Why does a hurricane get calmer over land?
Friction with the land helps to lower the wind speed.
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