Ground Breaks

Ground breaks, or ruptures, form where a fault cuts the surface, and they may also be associated with mass wasting, or the movements of large blocks of land downhill. These ground breaks may have hori zontal, vertical, or combined displacements across them and may cause considerable damage. Fissures that open in the ground during some earthquakes are mostly associated with the mass movement of material down slope, not with the fault trace itself breaking the surface. For instance, in the Alaskan earthquake (1964) ground breaks displaced railroad lines by several yards (m); broke through streets, houses, storefronts, and other structures; and caused parts of them to drop by several yards (m) relative to other parts of the structure. Most of these ground breaks were associated with slumping, or movement of the upper layers of the soil downhill toward the sea. Ground breaks during earthquakes are also one of the causes of the rupture of pipelines and communication cables.

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The Basic Survival Guide

The Basic Survival Guide

Disasters: Why No ones Really 100 Safe. This is common knowledgethat disaster is everywhere. Its in the streets, its inside your campuses, and it can even be found inside your home. The question is not whether we are safe because no one is really THAT secure anymore but whether we can do something to lessen the odds of ever becoming a victim.

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