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Indian scientists identify earthquake vulnerable areas in Nepal

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Indian scientists identify earthquake vulnerable areas in Nepal

[vc_row][vc_column][vc_column_text]Namrata Dave

The powerful earthquake that shook Nepal on April 25, 2015 may not have been the end of seismic events in the Himalayan nation, according to a study by Indian researchers who have identified areas of Nepal that are likely to face tremors in the future.

The Gorkha Earthquake classified as ‘violent’on the Mercalli Intensity Scale had given rise to 256 strong and mild aftershocks. An extensive quantitative study on the event carried out by researchers at Raman Centre of Applied and Interdisciplinary Sciences, Kolkata, has identified areas likely to face tremors in the future.

The earthquake occurred in the region of the Main Himalayan Thrust Fault. This is one of the regions where the Indian tectonic plate is pushed under the Eurasian tectonic plate. By computing a factor known as the Coulomb Stresschanges along the fault, the researchers have obtained important correlations between the location of the main earthquake and its aftershocks.

When adjacent tectonic plates are constantly pushing against each other, it causes a huge build-up of stress, known as Coulomb stress, between the plates. If the stress exceeds a certain value that they can no longer withstand, defined by the Coulomb Failure Criterion (CFC), they simply ‘slip’ past each other. Due to this sudden movement, a large amount of built-up energy is released from the location of the ‘slip’ in the form of seismic waves, causing earthquakes.

Overall, 218 out of 256 aftershocks occurred in regions which experienced positive value of a factor known as Coulomb stress change after the main earthquake. Some locations around the periphery of the fault region, especially the southern end of it, did not experience any aftershocks despite showing positive values of Coulomb stress.  These locations are therefore vulnerable and may face earthquakes in the coming years.

According to the study, most of the aftershocks occurred in regions experiencing very high values of positive Coulomb stress. Such regions have therefore been classified as the ‘zone of greatest hazard’.

Changes in Coulomb stress are a useful input in earthquake prediction models. An earthquake reduces the average value of stress around the region where the ‘slip’ occurs, but it can cause an increase in stress in other regions, due to the geometry and orientation of plates with respect to each other. A positive value of Coulomb stress implies that the failure threshold as given by the CFC has been exceeded.

The researchers estimated the Coulomb Stress change at a depth of 10 km, where a major number of aftershocks occurred. In addition, they also performed similar computations for depths of 15 km and 22 km along the fault, where the two strongest aftershocks of magnitudes 7.3 and 6.7 respectively occurred.

The study co-authored by Mallika Mullick and Dhruba Mukhopadhyay was recently published in the journal Geodesy and Geodynamics.

Source: India Science Wire

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India News

Asish Banerjee found dead in Rampurhat, Mamata Banerjee aide’s death shocks TMC

Former West Bengal deputy speaker and five-time Rampurhat MLA Asish Banerjee was found dead at a Trinamool Congress office in Birbhum.

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Mamata Banerjee

Former West Bengal Assembly deputy speaker and Trinamool Congress leader Asish Banerjee was found dead at a party office next to his residence in Rampurhat, Birbhum district, on Sunday morning.

Police said his body was found hanging and was sent for postmortem. A large crowd gathered outside the Trinamool Congress office after news of his death spread.

Who was Asish Banerjee?

Asish Banerjee had served as the deputy speaker of the West Bengal Assembly when Trinamool Congress chief Mamata Banerjee was the state’s chief minister. He was also a five-time MLA from Rampurhat.

He had served as Bengal’s education and agriculture minister after Mamata Banerjee’s Trinamool Congress first came to power in the state.

Banerjee contested the West Bengal Assembly election earlier this year but lost the Rampurhat seat to BJP’s Dhruba Saha.

Asish Banerjee’s recent party role

Banerjee stepped down as chairman of the Trinamool Congress’s Birbhum district core committee in June. At the time, he said he would continue as a general member of the party.

He lived in the Hattalapara neighbourhood of Rampurhat, with the party office where his body was found located next to his house.

BJP gains in Birbhum

The BJP won six of the 11 Assembly constituencies in Birbhum in the latest state election. This marked a significant change from 2021, when the Trinamool Congress had won 10 seats in the district while the BJP had secured one.

Police have sent Asish Banerjee’s body for postmortem as the circumstances surrounding his death are being investigated.

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India News

IPS Officer Nupur Prasad gets Medal for Meritorious Service after Sushant Singh Rajput probe

IPS officer Nupur Prasad, who led the CBI investigation into Sushant Singh Rajput’s death, has been selected for the Medal for Meritorious Service this year.

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IPS officer Nupur Prasad, who led the CBI investigation into actor Sushant Singh Rajput’s death, has been recognised with the Medal for Meritorious Service (MSM) this year.

A 2007-batch AGMUT cadre officer, Ms Prasad recently returned to the Delhi Police after completing her tenure with the CBI. She is currently serving as Joint Commissioner of Police in the Economic Offences Wing (EOW), where she oversees investigations involving financial and economic crimes.

The award is part of this year’s recognition for police personnel for distinguished and meritorious service. Such honours recognise contributions in areas including investigation, crime prevention, public service, law and order and administration.

Nupur Prasad’s role in Sushant Singh Rajput case

Ms Prasad came into national focus during the CBI investigation into the death of Sushant Singh Rajput, who was found dead at his Mumbai residence on June 14, 2020.

The case was transferred to the CBI in August 2020 following a complaint by the actor’s family and a legal dispute over jurisdiction.

During her tenure with the agency, Ms Prasad supervised key aspects of the investigation, including the examination of witness statements, forensic evidence and medical records.

In 2025, the CBI filed closure reports, saying its investigation found no evidence of foul play, abetment to suicide or criminal conspiracy in the actor’s death.

Career across Delhi Police, CBI

Ms Prasad has served in several positions during her career, including assignments in the Delhi Police, CBI, Arunachal Pradesh and West Bengal.

Before joining the CBI, she held senior positions in the Delhi Police and became the first Deputy Commissioner of Police (DCP) of Shahdara. During her tenure, she worked on establishing the district’s policing framework following its creation.

She also led operations targeting drug networks and illegal gambling activities while focusing on crime-prevention measures.

Later, as DCP of North Delhi, she oversaw security arrangements for major events, including Independence Day celebrations at the Red Fort and Delhi University elections.

Community-focused policing initiatives

Beyond investigations, Ms Prasad has been associated with community-focused programmes involving women’s self-defence, youth development, cyber safety and drug de-addiction.

During her CBI tenure, she was also associated with several prominent investigations. Media reports have linked her to cases concerning businessman Vijay Mallya and the AgustaWestland helicopter deal.

Current role in Delhi Police

After completing her assignment with the CBI, Ms Prasad returned to the Delhi Police and took charge as Joint Commissioner of Police in the Economic Offences Wing.

The latest recognition adds to her career spanning investigations, policing and public service across several challenging assignments.

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India News

Kharge, Rahul Gandhi skip Independence Day event for 2nd straight year

Congress chief Mallikarjun Kharge and Rahul Gandhi skipped the 80th Independence Day celebrations at the Red Fort for the second consecutive year.

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Rahul Kharge

Congress president Mallikarjun Kharge and Leader of Opposition in the Lok Sabha Rahul Gandhi skipped the 80th Independence Day celebrations at Delhi’s Red Fort for the second consecutive year.

Prime Minister Narendra Modi led the Independence Day celebrations at the historic venue on Saturday.

The absence of the two senior Congress leaders comes amid strained relations between the ruling party and the Opposition, which further deteriorated during the Monsoon Session of Parliament that concluded on Thursday.

2024 seating controversy

Rahul Gandhi had attended the Independence Day celebrations in 2024 but his seating arrangement triggered a controversy. The Congress leader, who holds the status of a Cabinet minister as Leader of the Opposition in the Lok Sabha, was seated in the second-last row during the ceremony at the Red Fort.

The Opposition had criticised the seating arrangement, calling it an insult to the people. The Defence Ministry, which organised the event, said the arrangement had been modified to accommodate Olympians at the venue.

According to protocol, the Leader of the Opposition is seated in the front row during ceremonial events.

Opposition-ruling party tensions

Relations between the government and the Opposition remained tense during the Monsoon Session, which ended on Thursday.

The session saw repeated clashes between the two sides, with both the Opposition and the ruling party blaming each other for the low productivity of Parliament.

The session began on July 20, with students marching towards Parliament on the first day. Twelve bills were passed during the session, while detailed discussion took place on only one legislation, concerning paper leaks.

The Congress, along with the Trinamool Congress and Samajwadi Party, also boycotted the customary tea party hosted by Lok Sabha Speaker Om Birla after the House was adjourned sine die.

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