How do earthquakes occur and which places are more sensitive in this regard?


Depending on the structure, the upper layer of the earth is divided into different types of small and large plates.


A plate is a piece of earth that is made up of the Upper Mantel and the Crust.


Plates are actually in the asthenosphere and this asthenosphere is a semi-liquid layer, and convection currents pass through it and these currents move the upper layer of the earth i.e. the plate. Where do these currents come from? They are produced by the radiation of radioactive elements (Uraniam, Thoriam, etc.) inside the earth. The image attached to this post will give you an idea of ​​the layers of the earth and the red lines are the currents.


There are different types of plate movements.

1. Plates come together (Convergence plate Boundary)

2. Divergent Plate Boundary

3- Slide pass plates from each other. (Transform plate Boundary)

4- One of the reasons is the production of sufficient amount of oil and gas from the earth which results in lithostatic imbalance which can cause minor tremors.


Wherever the movement of the above-mentioned plates is found, the probability of earthquakes will be higher than in other places.

Pakistan, Japan and other Asians, including North and South America, are exposed to the vicinity of these plateaus and are prone to earthquakes.

It's not that some places don't have earthquakes at all

The farther away from these places, the greater the intensity and frequency of earthquakes.


As far as the fourth reason is concerned, the small magnitude earthquakes that come from oil and gas production depend on the gas and oil production of any area.


The image below this post has a seismological map showing places around the world which are more vulnerable to earthquakes. Now you can easily see the seismic activity of Europe, Asia and different countries from this map.

And the reasons for this seismic activity are given above.