What happened in Nepal?

The quake which rocked Nepal on Saturday was the strongest in the region in more than 80 years

GN Bureau | April 27, 2015


#nepal earthquake   #nepal earthquake prediction   #earthquake   #earthquake prediction   #earthquake aftershocks   #aftershocks   #epicentre earthquake nepal   #kathmandu   #earthquake death toll  

What happened in Nepal and how big is the damage?

Seismologists say that the quake happened on what is known as a “thrust fault”. This describes the situation when one piece of the Earth’s crust is moving beneath another piece. In this case, it’s the Indian plate that is moving north at 45 millimetres a year under the Eurasian plate to the north.

United States Geological Survey (USGS) calculations estimate the damage between $100 million and $10 billion. Scientists estimate that more than 105 million people felt moderate shaking during the quake. A UN report says that nearly 6.6 million and 40 percent of the country is affected by the quake.

READ:
Nepal earthquake: 3,200 dead and counting


Check here for  fatalities and economic losses estimated by the USGS


What are Aftershocks?

An earthquake that follows a large magnitude earthquake called, “main shock” and originates in or around the rupture zone of the main shock. Generally, major earthquakes are followed by a number of aftershocks, which show a decreasing trend in magnitude and frequency with time.

Around 55 aftershocks occured in Nepal in two days after the massive 7.9 magnitude hit the country on April 25.


Why earthquakes occur?

 
Going by the plate tectonics concept,  the  Indian  plate  is  moving  in  a  north, north-east direction  and  colliding  with  Eurasian  plate  along  the  Himalayan  mountain  range.  This collision is responsible for the formation of faults such as boundary thrust, central thrust in and along  the  Himalayan regions. Almost  all  the  major  earthquakes  in  India  and  its  adjoining  region  occur  along these faults. In brief, earthquakes occur due to forces of geological origin along weak planes called, faults. The earthquakes occurring near plate boundaries such as Himalaya are known as inter-plate earthquakes. Apart  from  earthquakes  from  the  Himalayan  belt,  there  have  been  earthquakes  of relatively lesser magnitude and lesser frequency in the Peninsular region also. Such earthquakes are known  as intra-plate  earthquakes.

   
Classifying earthquakes

    
 

  •     Slight Magnitude up to 4.9 on the Richter Scale

 

  •     Moderate Magnitude 5.0 to 6.9

 

  •     Great Magnitude 7.0 to 7.9

 

  •     Very Great Magnitude 8.0 and more


       Nepal earthquake was 7.9, ie. earthquake of great magnitude.

 

Here is a list of significant earthquakes occurred in and around India


Here is a list of largest and deadliest earthquakes occurred around the world

  

With inputs from USGS and IMD
 

Comments

 

Other News

Kodnani’s acquittal raises doubts about criminal justice system

 Maya Kodnani, a BJP leader who was the MLA from Naroda when this locality on the outskirts of Ahmedabad witnessed one of the most gruesome episodes during the Gujarat riots of 2002, was acquitted by the Gujarat High Court on Friday. Her acquittal in the Naroda Patiya massacre case is only a sequel to

BMC took nearly 48 days in resolving one complaint

The number of civic complaints with BMC has increased from 61,910 in 2015 to 92,329 in 2017, which is 49% in two years. A report titled ‘Civic Issues Registered by Citizens and Deliberations done by Municipal Councillors in Mumbai’ released by Praja Foundation has found some interesting facts a

Who is Atishi Marlena?

Atishi Marlena is among the nine AAP functionaries who were dismissed by the union home ministry asserting that their posts were created without the approval of the centre. Marlena, served as education advisor of the Aam Aadmi Party (AAP)-led government in Delhi. While she was intrumental in improving the

Leadership? Learn it from Jaising, Ambani, Doshi

The Fortune magazine has named three Indians – lawyer Indira Jaising, industrialist Mukesh Ambani and architect Balkrishna V Doshi – among the world’s greatest fifty leaders.

Energy as the new value system for redesigning daily life

Remember Kardashev scale? For the uninitiated, it’s a method of measuring a civilization’s level of technological advancement, based on the amount of energy it is able to use for communication. We will get to its unconventional relevance to the big urban questions at the end, but just keep it a

48 MLAs, MPs have declared cases of crime against women

Out of 1580 MPs and MLAs with criminal cases, 48 (three MPs and 45 MLAs) have declared cases related to crime against women. The Association for Democratic Reforms (ADR) and

Current Issue

Current Issue

Video

CM Nitish’s convoy attacked in Buxar

Opinion

Facebook    Twitter    Google Plus    Linkedin    Subscribe Newsletter

Twitter