Answer to Question #226155 in Trigonometry for James Way

Question

I was given a data set of the daylight hours of a couple of cities (Tokyo,Yakutsk and Adelaide). Thanks to this article, I did not need to plot the graphs on Desmos to calculate the amplitude. I also have a question. How does the amplitude vary with the geographical location of the cities? What is the relation? Thank you!

Answer 1

Whenever an earthquake occurs, its various properties like time, magnitude, amplitude can be measured using the data which is recorded by a seismometer. The magnitude is the property of earthquake which tells about the physical size of an earthquake and for each earthquake it is a single value. However, the shaking that the earthquake causes, has multiple values which varies from place to place. The amplitude of an earthquake is the size of the frequency wiggles on the data recording on seismometer.

The magnitude of an earthquake is a single value which tells about its size, but there are many different intensity values that are distributed among the different geographical locations around the epicenter of earthquake. The shaking of a particular place which is also called the intensity, mostly depends upon the following:

• Distance of the location from the fault rupture area.
• The direction in which the earthquake had ruptured relative to the location.
• What type of the surface geology exists at that particular location.

Thus we can say that the the amplitude or intensity for a city depends on its geographical location and it mainly depends on the distance, direction and the surface geology of that particular location of city.