ECONOMYNEXT – Sri Lankan authorities are investigating into frequent earthquakes that has occurred in the recent times, an official said, with the latest one taking place in the coastal area of island nation’s southern district of Hambanthota sea area.
Sri Lanka has never been in the World’s earthquake-prone area,but in 2022, the island nation has witnessed 07 earthquakes, and in the last three months in 2023, 09 earthquakes have occurred in Buttala Beruwela, Kirinda, Gomarankadawala and Hambanthota areas.
“Only around 2-3 incidents are being reported per year. So, it is still not clear why these incidents occur. But investigations are being carried out.”, an official at the Geological Survey and Mines Bureau official.
An earthquake is caused by a sudden slip on a fault. A fault is a fracture or zone of fractures between two blocks of rock. During an earthquake, the rock on one side of the fault suddenly slips with relative to the other. The faults are most commonly found around the edge of plates which are continental-size blocks of rocks that comprise the outermost part of the earth.
“We are not on a plate, therefore we only get minor earthquakes, and the highest recorded inland is around 3.5. While in the sea area around 4,” the official said.
The official’s comment came after the latest incident in Hambantota.
“The earthquake occurred at around 12.45 am on Monday, around 25.8 kilometers southeast of the Hambanthota area,” the official told EconomyNext. Hambanthota is the area where China has invested a lot into port, airport, roads, a convention center, and a cricket ground.
“It was around 4.4 magnitude with a depth of 3 kilometers”.
There are 7 primary plates (Pacific, North America, Eurasia, Africa, Indo-Australian, Antarctica, and South America) that make up the majority of the earth’s surface and the Pacific Ocean.
Secondary plates are situated around countries such as the Caribbean, the Cocos, the Juan de Fuca, the Nazca, the Philippine Sea, and the Scotia. (Colombo/April 24, 2023)
Nothing shown on USGS map. I suppose Sri Lanka don’t want the world to know about the earthquakes in the south.