These underwater trenches are often the deepest point in the ocean. They can be 3 to 4 kilometres deeper than the surrounding seabed. The deepest point on Earth in underwater known as the Mariana Trench. This trench is 10.9 kilometres deep. In Mariana Trench, the point Challenger Deep is the deepest point in any ocean and on Earth. You would have heard about it a lot.
But perhaps, you might not know that There is a deep trench in the East of Japan, known as the Japan Trench. The depth of this trench is 8.4 km. There are very few countries in the world that are located so close to such deep sea.
This map shows you the depth of the sea in different parts of the world. The lighter the colour, the shallower the ocean. And the darker the colour, the deeper the ocean. Indian coastlines, African coastlines, South American coastlines they are shown in a light colour. But zoom in and look at Japan. On the right side of Japan, there is a massive dark area. This is the Japan Trench. And through it crosses, our imaginary Ring of Fire. The Pacific Ring of Fire.
Due to the movement of the tectonic plate, such horrific earthquakes are caused, the sea is so deep here, most number of volcanoes are found here, and due to this, the area that gets the most number of tsunamis, is the country of Japan. Japan’s coastline is very close to this trench, which means that the tsunami waves have to travel only a short distance and there isn’t sufficient time for issue warning. For this reason, Japan is at the highest risk from tsunamis.
