Earthquakes unveil deep rock structure under East Asia

May 15, 2015

Washington, May 15: Scientists have found a towering rock structure deep under East Asia by using 3-D supercomputer simulations of data from 227 earthquakes that hit the region during 2007-2011.

deep rock

The finding could throw light on the fate of the subducted continental plates beneath the Tibetan Plateau, known as ‘the roof of the world,’ which rises about 5km above sea level.

The work may also help find hidden hydrocarbon resources, and more broadly it could help explore the Earth under East Asia and the rest of the world, researchers said.

“We are combining different kinds of seismic waves to render a more coherent image of the Earth,” said principal investigator and lead author Min Chen from the Rice University.

Researchers combined seismic records from thousands of stations for each earthquake to produce scientifically accurate, high-resolution 3-D tomographic images of the subsurface beneath immense geological formations.

Like a thrown pebble generates ripples in a pond, earthquakes make waves that can travel thousands of miles through the Earth.

A seismic wave slows down or speeds up a small percentage as it travels through changes in rock composition and temperature.

The scientists mapped these wave speed changes to model the physical properties of rock hidden below ground.

“We found that beneath the Tibetan plateau, the world’s largest and highest plateau, there is a sub-vertical high velocity structure that extends down to the bottom of the mantle transition zone,” the principal investigator said.

The bottom of the transition zone goes to depths of 660 kilometres, she said.

“Three-dimensional geometry of the high velocity structure depicts the lithosphere beneath the plateau, which gives clues of the fate of the subducted oceanic and the continental parts of the Indian plate under the Eurasian plate,” she added.

The research was published in the Journal of Geophysical Research, Solid Earth.

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Agencies
July 21,2020

New Delhi, Jul 21: Air India trade unions have complained to Civil Aviation Minister Hardeep Puri that the government has now turned a blind eye to the management's ethnic cleansing at lower levels through compulsory leave without pay (LWP), redundancies and wage cuts.

In a letter to Puri, the Joint Action Forum of Air India unions said, "We are deeply ashamed to say that it seems that after praising our Air Indian Corona Warriors at grand functions, respectfully, the government has now turned a blind eye to this management's ethnic cleansing of Air Indians at the lower levels, through compulsory LWP, redundancies and wage cuts."

The Joint Action Forum of Air India unions strongly opposes this Compulsory Leave without pay scheme as it is an illegal practice and is not a voluntary scheme.

"In fact the Board resolution itself empowers the Chairman and Managing Director with extraordinary powers, which seem akin to a High Court, to pack off employees on 2 years leave (extended to 5 years) at CMD's discretion or at the arbitrary whim of the Regional heads," the trade unions said.

"This said Compulsory LWP scheme violates every labour law put in place by Parliament and orders of the Supreme Court and various other courts and seeks to dispossess the lower categories workers of their legally guaranteed rights," it added.

The trade unions have pointed out that the redundancies are at the elite management cadre level and not the workers.

"We are indeed shocked that the management of Air India could prepare and formulate a scheme for compulsorily sending workers on leave without pay, which is akin to an illegal lay-off, under the garb of a Leave Without Pay, when ironically the redundancy actually lies in the upper echelons of management and not with the humble workers of Air India, who have slogged to make our Airline the treasure it is," they complained to Puri.

"It must be noted that out of 11,000 permanent employees, our management occupies almost 25% as Executive Cadre, with little or no accountability. Solely amongst the Elite Management Cadre, we have 121 top officers ranking from DGMS, GMs, EDs to Functional Directors, most of whom are either performing duplicate job functions or are indeed redundant and not to mention the retired relics serving as consultants and also the CEOs of various subsidiary companies," they added.

Trade unions said the redundancy or compulsory leave without pay scheme if any at all, has to apply only to these Executives, more so, when they do not even have protection of labour laws or Supreme Court orders.

Strangely, the topmost corporate executive cadre and the backroom Generals, have saved themselves from the axe of wage cuts, by sacrificing a piffling of a few grand, whilst the frontline warriors of flying cabin crew, engineers, ground staff have borne the biggest brunt head on, the unions said.

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News Network
July 12,2020

New Delhi, Jul 12: With the highest single-day spike of 28,637 new cases and 551 deaths being reported in the last 24 hours, India's COVID-19 count reached 8,49,553 on Sunday.

According to the Union Health and Family Welfare Ministry, this includes 2,92,258 active cases, and 5,34,621 cured and discharged or migrated patients. The toll due to the disease has reached 22,674 in the country.

Maharashtra with 2,46,600 cases continues to be the worst affected state by COVID-19 in the country. The state has 99,499 active cases while 1,36,985 patients have been cured and discharged so far. The death toll due to the disease now stands at 10,116.

Tamil Nadu with 1,34,226 cases, including 46,413 active ones, is the next worst affected in the country. While the number of cured and discharged patients is at 85,915 in the state, the toll due to the disease is at 1,898.

The national capital has recorded 1,10,921 confirmed cases so far. However, the number of active cases in Delhi is at 19,895 and 87,692 patients have been cured and discharged so far. With 3,334 deaths being reported due to COVID-19 in the city. 

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News Network
May 9,2020

Thrissur, May 9: Five people were arrested for allegedly conducting congregational prayers at a mosque here in violationofthe COVID-19 lockdown norms.

A case was registered against five people for conducting evening prayers on Friday, police said.

We received information that prayers were being conducted in the mosque, they said adding they were held at Eriyad Masjidul Bilal mosque here.

On Friday, four people, including the president of a local temple trust, were arrested for allegedly conducting a religious recitation in a temple here in violation of lockdown restrictions.

Though lockdown conditions have been eased in accordance with the Centre's guidelines, public gatherings, including functions, weddings, political events and religious gatherings were not allowed.

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