Landslides
Mass movement or sliding of hillsides caused by the ground shaking of earthquakes.

Life Line
Those facilities that are crucial to life support and that should receive high priority for protection or restoration following disasters. Lifelines include water systems, electrical systems, gas systems and transportation networks.

Line Main
A firing system consisting of a main line. Any number of branch lines can be connected to a main line, but only one branch line is to be connected to a main line at any point.

Liquefaction
Transformation of a granular material (soil) from a solid state into a liquefied state as a consequence of increased pore-water pressure induced by earthquakes.