Mangaluru prone to earthquakes, says survey

May 6, 2015

Mangaluru, May 6: According to an experts survey, it has been found that buildings in Bejai-Balmatta, Attavar -Hampankatta, have not adhered to IS 1893 : 2002, Part 1, which is the criteria for earthquake resistant design of structures, NITK?Civil Engineering Department Professor D Venkat Reddy said.

He was delivering a talk on ‘Earth, oceans and coastal zone management’, organised by Institution of Engineers (India) local centre an Institution of Valuers Mangalore Branch in Mangaluru.

mangalurucity

The city falls in seismic zone-3 which means that the quakes of intensity six could occur. The buildings could withstand the earthquakes up to five in the Richter scale. As per Indian Standards on Earthquake Engineering, IS1893:1984 criteria for Earthquake Resistant Design of Structures, the country has been categorised into five seismic zones, based on the seismic intensity. IS is about earthquake resistant design of structures and is applicable to buildings, and other structures such as bridges, dams etc. Earthquakes of magnitude of eight take place in zone five. Nethravathi and Gurupur river basins are tectonically active.

As observed in Nepal, the structural failure of buildings have caused more amount of damage. In contrast, the Pashupathinath Temple is intact, though the building in its surrounding have been badly effected, which is due to the difference in structural pattern.

He further said that seismic waves alone are not responsible . Seismic activities take place round the clock. The earthquakes take place due to the sudden failure of strata. As per an estimation, around one thousand take place across the world everyday and three of them could be serious.

A lineament which is a fault in the underlying geological structure and the constructions on these lineaments such as railway tracks, bridges etc could cause more danger. IIS?has established a network system which records the seismic activities and which can even record 0.1 mm change in the crest of the earth. As per the movement of earth plates, a region will be displaced in a span of hundred years.

Comments

Arjun Neil Menezes
 - 
Tuesday, 20 Feb 2018

I'm building a 1story house with slab on load bearing walls instead of the concrete frame structure. Will this be resistant agaianst earthquakes?

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March 12,2020

Mangaluru, Mar 12: Deputy Commissioner Sindhu B Rupesh on Thursday said that the test reports of the 35-year-old passenger from Dubai have shown no signs of either Coronavirus (COVID-19) or H1N1.

In statement issued here Ms Rupesh said that the passenger has now been discharged from the Bantwal hospital. He has been asked to stay at home quarantined for the next 14 days.

The passenger, who had been diagnosed with fever after he arrived at the airport from Dubai on March 8, had left the Government Wenlock Hospital in the early hours of March 9 refusing to undergo tests.

Later, he was traced and admitted to the hospital in Bantwal and his throat swab samples had been sent to Viral Research Diagnostic Laboratory (VRDL) in Hassan Institute of Medical Sciences.

Meanwhile, throat swab samples of six patients were also found negative for COVID-19.

As many asf 49 people were under quarantine in the district of which five have completed the 28-day cycle.

All passengers arriving by international flights and those in contact with them should voluntarily report to the district health team and undergo self-quarantine for 14 days. If there were symptoms of cough, cold and fever, they should undergo tests for COVID-19. If the reports were positive for COVID-19, then they have to stay in the isolation ward of the Government Wenlock Hospital or in the seven select private hospitals for 28 days.

Screening facility at the airport has been strengthened by posting doctors from seven private medical colleges on rotation basis. These doctors would be in addition to the medical officer at the airport. An ambulance has been placed at the airport exclusively to shift people to the hospitals, she added.

The State government has issued a notification on Wednesday authorising Deputy Commissioners to get the affected admitted by force, if necessary.

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News Network
February 18,2020

Bengaluru, Feb 18: Passengers of the Ahmedabad bound GoAir flight had a providential escape when the engine of the aircraft while on the roll of take-off hit by a foreign object at the Kempe Gowda Bengaluru International Airport on Tuesday.

'The right engine of GoAir flight G8 802 from Ahmedabad to Bengaluru is suspected to have suffered from foreign object damage (FOD) while on take-off roll,' an official statement said.

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February 23,2020

The euphoria over the claim that around 3,000 tonnes of gold reserves, worth Rs 12 trillion, have been discovered in Uttar Pradesh’s Sonbhadra district could not last even 24 hours, with the Geological Survey of India (GSI) clarifying on Saturday there had been no such discovery.

The GSI, headquartered in Kolkata, rebutted the claims of the Uttar Pradesh Directorate of Geology and Mining (UPDGM), and said “miscommunication” must have led to the wrong reporting of facts.

M Sridhar, director general of the GSI, said nobody in the agency gave any such data. He said 52,806 tonnes of gold ore was found in Sonbhadra district during the exploration work in 1998-2000. From this reserve, only 160 kg of gold can be extracted.

“There must have been some miscommunication of facts because of which the gold ore deposits have been overestimated. We have written a letter to Uttar Pradesh (UPDGM), stating the facts. The GSI has not estimated such kind of vast resource of gold deposits in Sonbhadra,” Sridhar said.

ALSO READ: 2,900-tonne gold mine found in Sonbhadra, 4 times that of India's reserves

The UPDGM had said on Friday that gold deposits were found in Son Pahadi and Hardi areas of the district. Sridhar said while gold ore was found in the area during the GSI’s exploration work in 1998-2000, it had told the state government about the discovery in November last year.

Under the new regulation, which came into effect from 2015, the GSI has to inform the state government when ore deposits are discovered. Earlier, no such action was mandatory. In its report, the GSI estimated that only 3.03 gm of gold can be extracted from a tonne of ore. It also clarified that even the extraction amount was tentative and could not be established for certain.

Moreover, Sridhar said the deposits were spread across only 0.5 sq km in forest land, which made the mining of ore economically unviable. “When there are several mines nearby, we can club it into a block and then it makes sense to mine the ore. But in this case, the deposits are too small to make it viable for any company to mine it,” he said. The GSI usually prioritises its exploration work based on the needs of the Centre. While strategic minerals like tin, cobalt, lithium, beryllium, germanium, gallium, indium, tantalum, niobium, selenium, and bismuth are atop the list in GSI exploration, gold is another commodity on its priority list.

According to the World Gold Council, India has reserves of 630 tonnes of gold.

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