p waves
It gives them the information to predict the movements of the earthquake by the location it was in the time it hit and the damage it done so that data collected can help the data collectors predict where a future earthquake can and possibly hit.
Because it was a big tsunami Yes it was a big tsunami, but it was originally the earthquake that done the damage. Because of the 8.9/9.0 earthquake, the tsunami was created and destroyed Japan.
No. Damage is the basis of tornado ratings, but not for hurricanes. Hurricanes are rated based on maximum sustained wind speed.
There is nothing humanly possible that can be done to prevent an earthquake anywhere. The loss of life and damage can be reduced to some degree by improving construction and emergence readiness.
In seismology (the study of seismic waves or vibrations in the ground / earthquakes) the Richter scale is a magnitude scale. Magnitude scales show the amount of energy released by an earthquake. In the case of the Richter magnitude this is based on the amplitude of the seismic waves measured on a seismometer and the distance of the seismometer station from the epicentre of the earthquake. The magnitude value should be the same for a given earthquake no matter where it is recorded. The Mercalli scale is an intensity scale. This gives information on the perceived ground shaking in a specific location. The value is derived from witness reports on the perceived violence of the shaking, from the damage done to buildings and other infrastructure and also based on measurements from accelerometers and other seismic recording instruments in order to make the Mercalli intensity value a less subjective parameter. The intensity and damage to infrastructure can be influenced strongly by a number of variables including local ground conditions and the use (or otherwise) of earthquake resistant design. Please see the related questions for more information.
i think it Haiti or christchurch
you are done!
Depends on how hard the earthquake's damage done on the Richter Scale
Damage done
The amount of structural and geological damage done by an earthquake in a specific location determines an earthquake's intensity on the Mercalli scale.
The modified mercalli intensity scale is used to measure the intensity of an earthquake and is in part derived from the damage done to building and other structures.
Examples:What was the extent of the damage done to the vehicle? The earthquake has caused a lot of damage.
Mercalli Scale
The Mercalli scale would be used to damage earthquake damage.
The surface that is right above the epicenter of the earthquake,or the place that is right above where the earthquake starts.
some damage was done in some old buildings in Pomona
The simplest thing is to cross brace ALL the corners of a building.