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.

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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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News Network
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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News Network
July 16,2020

Bengaluru, Jul 16: Eminent theatre personality and renowned vocalist Dr Subhadramma Mansur who had won many awards including the prestigious Karnataka Rajyotsava award died on Wednesday night, according to her family.

She was 81 and is survived by two sons and a daughter.

The family said she developed severe respiratory problems last night following which she was rushed to hospital, but died on the way.

Condoling her death, Chief Minister B S Yediyurappa said Dr Mansur had contributed to the theatre world for five decades. He also recalled her devotion to music as an eminent vocalist.

"I pray for her soul to rest in peace and strength to the family to bear the irreparable loss," the Chief Minister said in his message posted on Twitter.

The veteran theatre personality from Ballari earned recognition for her roles in mythology-based dramas.

Connoisseurs of stage performances recall her memorable portrayal of Draupadi, a character from the Mahabharata.

Her depiction of Hemareddy Mallamma left a deep imprint on the audience.

Many awards were bestowed on her including the Rajyotsava Award, Nataka Akademi and Gubbi Veeranna Award and an honorary doctorate by the Srikrishna Devaraya University

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coastaldigest.com news network
July 30,2020

Mangaluru, July 30: The Social Democratic Party of India has condemned the move by the state government to drop a lesson on legendary Mysuru rulers Hyder Ali and Tipu Sultan from the class 7 textbook.

The Department of Public Instruction has omitted the chapter from the textbooks of Class 7 in their attempt to reduce syllabus for state board schools by 30 per cent.

The department, however, has decided to retain similar chapters on Tipu Sultan in 6th and 10th Classes, though the syllabus in text books for all classes from 1 to 10th has been trimmed. 

In a media release statement, SDPI State President Ilyas Mohammed Thumbe termed the move as communally motivated. “By dropping the lesson, the BJP-led government is engaged in saffronisation of education,” he alleged.

He said that Tipu was the most prominent freedom fighter, who had given priority to irrigation, rocket technology and harmony. The BJP government is also planning to scrap lessons on the Constitution, secularism and democracy. By twisting history, the BJP is trying to mislead the younger generation, he added.

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