Earthquake Zoning

Seismic zonation is based on the possibility of zoning the area experienced an earthquake disaster. Target making seismic zoning is to find areas prone to earthquake. The size of zoning areas will determine how vulnerable the area of earthquake hazard.

- Region 1: regions with the smallest possibility for the occurrence of earthquakes.
- Region 2: areas with little possibility for the occurrence of earthquakes.
- Region 3: regions with a possible medium for the earthquake.
- Region 4: areas with a high possibility for the occurrence of earthquakes.
- Region 5: areas with higher probability for the occurrence of earthquakes.
- Region 6: areas with the highest likelihood for the occurrence of earthquakes.

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Earthquake measuring instruments

The instrument used to measure earthquakes is called a seismograph. This tool helps the movements of the earth and recorded in the seismograms. Seismic waves or vibrations when an earthquake occurs in the form of wavy lines drawn on the seismogram. To determine how big the magnitude on the Richter scale was used.

Seismograms was first created in China in the year 150 AD, kettle-shaped carved dragon head attached on the outside. Earthquake causes tremors caused balls falling from the dragon's mouth and into the field below. Place balls had dropped the dots indicate the earthquake epicenter.

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