What is seismic tomography?
seismographic tomography is a technique that is used to generate three -dimensional images of the ground. It is often compared to scanning computer tomography (CT), a technique used in medicine to look into the body. In fact, these two techniques work in a very similar way, and each method generates a series of "slice", flat images on a particular plane that are created by reading the way energy travels in the area of interest, be it body or country.
For seismic tomography, two different energy sources can be used. One of them is an earthquake that creates waves that can be picked up with receivers on the ground surface. Using information from a group of receivers, geologists can create a picture of the materials that have gone through the waves because the waves will move at different speeds of different types of rocks. Seismic tomography can reveal the presence of various formations of rock and soil, along with cavities filled with water.
geologists can also generate waves and listen to their reflection. This technique can be used to collect data from a particular targeted area or to add earthquake data to get a more complete picture of the area of interest. Waves can be generated by inspected explosions or devices that vibrate and create a wave of energy that can be monitored by its reflections. As with CT scanning in the hospital, this type of tomography creates an image because it reflects energy back to the surface.
people can use seismic tomography for all kinds of purposes. Many scientists use it when they study earthquakes to find an earthquake epicenter and learn more about the damage caused by the earthquake. It can also be used to learn more about the nature of the ground in general; Since it is not possible to look deep on Earth, seismic tomography is the only way to learn about certain topics of interest in geology. Many fascinating maps of subsurface formations and interior of the groundAnene in geological classes comes with a kind permission of seismic tomography.
Data from seismographic equipment are easily accessible to scientists conducting seismographic tomographic studies. A number of software programs are designed to interpret seismic data. Some of these programs can work very quickly, which may be useful when scientists need to quickly use information about disasters or inform local officials about ongoing geological activities.