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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

Pawan Khera faces fresh setback as Supreme Court refuses relief in passport row case

Congress leader Pawan Khera faces fresh setback as Supreme Court refuses interim relief and directs him to seek bail from Guwahati High Court.

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Pawan Khera

Congress leader Pawan Khera suffered another legal setback on Friday after the Supreme Court of India declined to extend protection in a case linked to his remarks about Himanta Biswa Sarma’s wife.

A bench of the apex court refused to interfere with an earlier order that had stayed the transit anticipatory bail granted to Khera by the Telangana High Court. This decision leaves the Congress leader open to possible arrest by Assam Police in connection with the case.

During the hearing, Khera’s counsel sought interim protection, but the court declined the request and advised him to approach the appropriate court in Assam for relief. The bench clarified that the Guwahati High Court should decide any bail plea independently and on its merits.

“Am I a terrorist?” remark during hearing

While seeking protection, Khera’s legal team expressed concern over the urgency of the situation. In court, his counsel remarked, “Am I a terrorist?” highlighting the plea for temporary relief until a fresh bail application could be filed.

The Supreme Court also raised concerns over the submission of incorrect documents during the proceedings, adding another layer to the legal complications faced by the Congress leader.

Case linked to remarks on CM’s wife

The case stems from a press conference held earlier this month, where Khera made allegations regarding the citizenship status and financial assets of the Assam Chief Minister’s wife, Riniki Bhuyan Sharma.

He had claimed that she possessed multiple passports and owned undisclosed overseas properties. These allegations were strongly denied by the Chief Minister’s family, who termed them fabricated and misleading.

Legal battle intensifies

Earlier, the Telangana High Court had granted Khera temporary transit anticipatory bail, allowing him time to seek relief from a competent court in Assam. However, the Supreme Court stayed that order following a challenge by Assam authorities, escalating the legal battle.

With the latest ruling, Khera is now expected to move the Guwahati High Court for anticipatory bail as the case continues to unfold.

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India News

Congress suspends 5 Haryana MLAs over cross-voting in Rajya Sabha polls

Congress suspends five Haryana MLAs for cross-voting in Rajya Sabha elections, citing serious indiscipline and anti-party activities.

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The Congress has suspended five of its MLAs in Haryana for cross-voting during the recent Rajya Sabha elections, taking disciplinary action over what it described as “anti-party activities”.

The move came after the state unit reviewed the conduct of certain legislators during the polls, where some were found to have voted against the party’s authorised candidate.

Five MLAs suspended after disciplinary process

According to party sources, the MLAs were issued show-cause notices seeking an explanation for their actions. After reviewing their responses, the Congress disciplinary committee recommended suspension.

The decision was approved by the party leadership, including Congress president Mallikarjun Kharge, and has been implemented with immediate effect.

Party calls it ‘grave indiscipline’

Haryana Congress chief Udai Bhan said the action was necessary to uphold party discipline, stressing that defying the official party line during elections weakens organisational unity.

He said the party takes such violations seriously and will continue to act against any form of indiscipline.

Leadership backs strict action

Senior Congress leader and Leader of Opposition Bhupinder Singh Hooda supported the decision, saying it was taken after due consideration.

He noted that while Rajya Sabha elections are conducted through an open ballot system, allowing legislators some flexibility, the party retains the authority to initiate internal disciplinary action in cases of deviation.

Background

The action follows cross-voting reported during the recent Rajya Sabha elections in Haryana, which led to internal concerns within the party. The development has highlighted organisational challenges and prompted the leadership to take corrective steps to reinforce discipline.

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Harivansh set to be elected Rajya Sabha Deputy Chairperson unopposed

Harivansh is set to be elected unopposed as Rajya Sabha Deputy Chairman after no opposition nominations were filed before the deadline.

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Former Rajya Sabha Deputy Chairman Harivansh is set to be re-elected to the same post unopposed in the election due to be held later today.
The date has been fixed by the Chairman under the relevant rules governing the conduct of business in the Upper House.
According to sources, the deadline for submitting motions for the election was 12 noon on April 16. A total of five notices were received within the stipulated time, all proposing Harivansh for the post.

Multiple nominations, single candidate
The motions were submitted by members across parties, including Jagat Prakash Nadda, Nitin Nabin, Nirmala Sitharaman, Sanjay Kumar Jha, and Jayant Chaudhary, each backed by seconding members.
All five motions explicitly state that Harivansh be chosen as the Deputy Chairman of the Rajya Sabha.

No opposition nomination filed

Notably, no motion was submitted by the Opposition before the deadline. This effectively clears the path for a unanimous election, as there is no contest for the position.
As per parliamentary procedure, motions will be taken up one by one. Once any one motion is adopted by the House, the remaining motions will not be put to vote.

Likely to be elected by voice vote
In line with established practice, the first motion — expected to be moved by Nadda — may be adopted through a voice vote. Following this, the Chairman will formally declare Harivansh as elected Deputy Chairman.
After the declaration, Harivansh will be escorted to the Chair by members from both the Treasury and Opposition benches, adhering to parliamentary convention.

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