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Jumat, 01 Agustus 2014

Seismology Tools Being Used

Seismology Tools Being Used


by Carey Bourdier


When you think about seismology, you might be thinking only about earthquakes. However, while studying earthquakes is certainly the main component of this discipline of science, it is not the only aspect to study. Seismologists and Geophysicists also study the effects of earthquakes and the effects of man-made seismic activity and the movement of elastic waves through the Earth in general. To do this, scientists use a variety of important tools.

The seismometer is one tool that all seismologists must learn how to use. In the past, this device simply showcased the size and duration of seismic waves. We've all seen these devices before, perhaps on a news broadcast, showing the seismic activity before, during and after an earthquake. It is sometimes also known as a seismograph, and there are seismograph stations all over the planet, recording seismic activity constantly. Today's seismometers not only show the activity, they also record the activity so that scientists can study the data more easily.

Actually there were seismographs a long time and the very first versions were invented more than 2,000 years ago in China. Aside from ground movement, it also monitored wind events. Thomas Gray, John Milne and James Alfred Ewing built a more modern version of the device by the late 19th century. It provided helpful data even though it did not detect the occurrence of far-away earthquakes with helpful data as to the location of nearby earthquakes. It helped in the study of different types of earthquakes and fault lines by many scientists.

Scientists use a strain-meter which is actually a very interesting device that is used for studying earthquakes and this is actually placed deep into the earth as much as 500 feet below the surface. What it detects is the small movements just under the earth's surface. The changes in the earth are recorded by the strain-meter at lower frequencies than you could with a seismometer. They can show how stress builds up when they have been placed in for long periods of time due to plate tectonics and then it records the release of this stress or changes in stresses after a seismic event.

Theodolites, such as those produced by Warren Knight, are another tool commonly used by seismologists. While you might think of the theodolite as a tool primarily for surveying engineers, this device is quite helpful in measuring creep movement or the movement that occurs in the earth's crust as a reaction to earthquakes.

There are also other events that are studied by seismologists and these are volcanoes and man-made seismic movements. A tilt meter or officially named the inclinometer in these instances are used which is a helpful tool especially in highlighting the build-up of stress and pressure in an active volcano. A mining operation have explosions which are human-made seismic events are also included. Hydraulic fracturing is another factor that affects the earth and seismologists also use many tools to study this man-made movement, which also is called fracking.




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New Unique Article!

Title: Seismology Tools Being Used
Author: Carey Bourdier
Email: articles@zerocompany.com
Keywords: seismology tools,seismologists,theodolites,scientific instruments manufacturer,precision equipments manufacturer,alignment systems manufacturer,scientific instruments,precision equipments,compass
Word Count: 494
Category: Science
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