TYPES OF SEISMIC WAVES Erkan Dermanc Efe Gney

TYPES OF SEISMIC WAVES Erkan Dermancı, Efe Güney, Atalay Mudanyalı, Taylan G. Aydemir

What are Seismic Waves? Seismic waves are releases of high amounts of energy due to stresses in the Earth’s crust according to the principles of Plate Tectonics. These are colloquially called earthquakes among people.

How are Seismic Waves Measured? Seismic waves are measured through a seismograph. Also, a seismic wave’s magnitude is shown on a scale known as the Richter scale.

Types of Seismic Waves There are two types of Seismic Waves: Body waves and Surface waves. They are both separated into two groups. Body Waves Surface Waves P Waves Love Waves S Waves Rayleigh Waves

P Waves And S Waves Primary Waves: This is the fastest kind of wave. It is also known as compressional wave. The P wave can move through solid rock and fluids. Particles move in the same direction as the energy of the wave.

P Waves and S Waves Secondary waves are the waves we feel in during an earthquake. They can only move through solid mediums like the Earth’s crust. It can’t move through liquid mediums. It is slower than P waves. S waves move rock particles up and down, or side-to-side.

Love Waves The first kind of surface wave is called a Love wave. It's the fastest surface wave and moves the ground from side-to-side. It is very destructive after large earthquakes. Recent research also suggests these waves trigger small earthquakes.

Rayleigh Waves The other kind of surface wave is the Rayleigh wave. A Rayleigh wave rolls along the ground just like a wave rolls across a lake or an ocean. Because it rolls, it moves the ground up and down, and side-to-side in the same direction that the wave is moving.

Rayleigh waves spread out most in time, producing a long wave duration on seismographs and it is one of the most damaging wavesfor the Earth. Becouse it’s a surface type of wave.

Bibliography http: //www. kids-fun-science. com/love-waves. html https: //www. britannica. com/science/Rayleigh-wave http: //www. geo. mtu. edu/UPSeis/waves. html http: //www. geometrics. com/what-are-the-different-types-of-seismic-waves/ https: //www. sciencelearn. org. nz/resources/340 -seismic-waves

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