What are the four factors affect how much damage is done after an earthquake?

Answer 1

Earthquakes have the capability to cause significant damage. This depends on:

• Their magnitude (the amount of energy released by the earthquake, which effects the energy of the seismic waves and the damage they can cause, whereby the larger the magnitude, the greater the energy and hence amplitude of seismic waves and the more damage they may potentially cause)
• The proximity of the epicentre to populated or urban areas (the closer the earthquake epicentre, the more energy will be retained by the earthquake waves and the greater the damage)
• The local ground conditions (seismic waves have a much lower amplitude in hard rock than in soft ground making the damage caused by seismic waves much greater in soft grounds. Also liquefaction may occur in soft ground where there is pore water which acts to significantly reduce bearing capacity and makes building collapse much more likely)
• The duration of the earthquake. The longer the duration, the greater the damage that may be caused.
• The construction techniques employed in the area and the enforcement of applicable construction codes or standards will affect how destructive an earthquake is (earthquake resistant designs will obviously reduce the damage caused by seismic waves, on the other hand, in countries or areas where poor building practices are followed - e.g. insufficient steel reinforcement in concrete, the use of cheap or poorly sourced aggregates which reduce the strength of concrete or the construction on poor founding materials without the requisite foundation engineering will all act to increase the damage caused by earthquakes).

Answer 2

1) Magnitude

2) Duration

3) Distance from epicenter

4) Location (land vs. water)

The effects of any earthquake depend on a number of widely varying factors. These factors are all of:

* Intrinsic to the earthquake - its magnitude, type, location, or depth;

* Geologic conditions where effects are felt - distance from the event, path of the seismic waves, types of soil, water saturation of soil; and

* Societal conditions reacting to the earthquake - quality of construction, preparedness of populace, or time of day (e.g.: rush hour).

Answer 3

The four main factors that affect how much damage is done after an earthquake are the earthquake's magnitude, depth, distance from populated areas, and the local geology of the area. Earthquakes with higher magnitudes, shallower depths, closer proximity to populated areas, and areas with softer, more unstable geological formations tend to cause more damage.

Answer 4

After Shocks, beat and non balanced windows, faults, and tsunamis

Answer 5

House built on solid rock will shake less then a house built on sandy soil

Answer 6

active tendon system, base isolators and flexible pipes.

Answer 7

Intensity and magnitude.