Nigeria has experienced over 30 earth tremor incidents in the last 6 years
London, September 8, 2018 (AltAfrica)– The reported earth tremor that hits some areas of Nigeria’s Federal Capital Territory Abuja, on Wednesday night was among the over 30 have hit different parts of Nigeria in the past six years, yet there has been no conclusive investigation on what and why the recurrence of the frightening incidence
Alternativeafrica,com can authoritatively reveal that Nigerian has experienced about fifteen earth tremors in different part of the country in the last five years . All have followed a similar pattern
Aside the Abuja incidence on Wednesday, there have been reported cases of earth tremor in Bayelsa and Rivers states. They were reported to have occurred around oilfields operated by Shell Petroleum Development Company (SPDC) in Bayelsa and Rivers between July and August which affected many communities
In Nigeria, Kaduna state has been the most affected by reported cases of earth tremor with about four different incidents in Kwoi , the headquarters of Jaba Local Government Area of Kaduna State.
In the month of September 2016 alone, about 15 incidents of tremor hit the town
In an interview with the News Agency of Nigeria, NAN on September 15th, 2016, one Musa Illalah the Zonal Coordinator in the North West, the National Emergency Management Agency (NEMA) said that over 300 houses were affected by the earth tremor that hit Kwoi in Kaduna State
Though no life was lost, Ilalah, the affected houses either collapsed or got cracked. “We have gone round and have seen the houses that were affected. The assessment is still ongoing; we are waiting for the geologists to tell us the root of the problem and what will be the next plan of action for the occupants of these communities,’’ Mr. Ilalah said.
Aside the North and South South areas, Western states in Nigeria have also experienced the apprehension and agony associated with earth tremor. On Friday, January 25, 2013 residents of Ishaka-Igbala area, Sango Ota, in Ogun state were hit by tremor in the early hours
In May 2016, a similar earth tremor rocked Saki, Oyo State. Reports said residents of some quarters in the community such as Medinat, Veterinary and Ogbooro heard deafening, underground vibrations.
On September 11, 2009, similar occurrence was reported in areas around Abeokuta, Ogun State. It was learnt that the incident was felt in some parts of Lagos State.
Unfortunately, there has been no published details of findings of previous occurrences
In Nigeria, the first widely reported occurrence of an earth tremor in was in 1933. Other events were reported in 1939, 1964, 1984, 1990, 1994, 1997, 2000 and 2006.
The intensities of these events ranged from III to VI, based on the Modified Mercalli Intensity Scale. Of these events, only the 1984, 1990, 1994 and 2000 events were instrumentally recorded
What is a tremor: An ‘earth tremor’ is simply a shaking of the earth that is strong enough to be felt by people.
Causes of tremors: Explosions, the movement of trains and heavy trucks, the vibrations caused by machinery, volcanic eruptions, and tectonic forces within the earth. Earth tremors occur when the force exerted on the rock mass exceeds its strength.
Earthquake vs tremors
Earthquakes are the vibrations caused by rocks breaking under stress against an underground surface called a fault plane while a tremor is an involuntary movement of earth surface caused by stress in the underground rocks.
They are both signs of seismic movement within the earth