The complex nature of earthquake ground motion, Biology

In fact a real earthquake ground motion at a particular site is much more complicated that than the simple waveform depicted. It would be beneficial if we make comparison between the surface of the ground under the impact of an earthquake and the surface of the water in a pond. We can bring the surface of a pond in motion by just throwing few stones into it. The first few stones generate a series of circular waves which begin to collide with each other and  after some time these collisions,  which of circular waves which begin to collide with each other and after some time these collisions, which are called interference patterns, begin to dominate over the circular pattern of waves. After a short while, the whole surface of the water is full of ripples, and we cannot recognize the original waves. In the event of an earthquake also, the ground vibrates in a similarly complex manner due to interaction among the waves of different of different amplitudes and frequencies.

The complex nature of earthquake ground motion can be attributed to the following three factors:

1.      The seismic waves created during the fault movement are not all of a uniform character.

2.      During their movement through the earth from the fault to the site of any building, the waves get modified by the rock and soil media through which they pass.

3.      Moreover, when these waves reach the building site they are further modified de pending upon the characteristics of the ground and the soil beneath the building.

These three factors are known as source effects, path effects and site effects.



Posted Date: 7/12/2012 3:42:46 AM | Location : United States

Related Discussions:- The complex nature of earthquake ground motion, Assignment Help, Ask Question on The complex nature of earthquake ground motion, Get Answer, Expert's Help, The complex nature of earthquake ground motion Discussions

Write discussion on The complex nature of earthquake ground motion
Your posts are moderated
Related Questions
Explain the term active transport? Active Transport :  At intervals, protein assemblies involved in selective, or active transport of materials are inserted into the cell mem

Emboly Movement - Involution It denotes turning in or rolling over. Involution of mesodermal blastomeres has been observed in Amphioxus, reptiles, monotremes, amphibians,

Consider a simple spherical model cell that consists of cytoplasm and a plasma membrane. The cell's initial volume is 2 nL and contains 0.2 M protein. The cell is placed in a la

How does the metachronal waves form in the ciliary row of protozoa ? Explain the cilia beating mechanism associates with it.

Fate of Blastopore Cleavage results in the formation of a ball of cells called morula (resembling mulberry hence the name). A space appears in the morula changing it to a holl

Which of the following is TRUE about the properties of aqueous solutions? Select one: a. A pH change from 5.0 to 6.0 reflects an increase in the hydroxide ion concentration (

Insulin  is  released  into  the  bloodstream by  the  β  cells  of  the  pancreas  when blood glucose stages are high after feeding and stimulates glycogen synthesis to kept exces

Explain Microscopy - Principles, Use and Maintenance? We start the Practicals in the Food Microbiology and Safety Course with an orientation to the microscope. This first Pract

Q. What are the elements that form the middle ear? What are the names of the three middle ear ossicles that participate in the phonosensitivity? The middle ear is formed by the

Q. Strain of Fusarium moniliforme? It was first obtained from a strain of Fusarium moniliforme isolated from southern leaf blight- damaged corn seed as a water soluble toxin.