Current Affair – June 12, 2021

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CURRENT AFFAIRS

Ram Prasad Bismill

  • Union Culture Minister participated in a ceremony to mark the birth anniversary of Bismill at his birthplace in Shahjahanpur in Uttar Pradesh and called for a programme to be designed to mark his 125th birth anniversary next year.

·The programme would be a part of the celebrations of the 75th year of Independence.

About Bismill

  • Born on 11th June, 1897 in Shahjahanpur Pt. Ram Prasad Bismil was amongst the most notable Indian revolutionaries who fought against British colonialism.
  • As well as being a freedom fighter, he was a patriotic poet and wrote in Hindi and Urdu using the pen names Ram, Agyat and Bismil.

· He formed the Hindustan Republican Association with leaders like Bhagat Singh and Chandrasekhar Azad and participated in the Mainpuri conspiracy of 1918, and the Kakori conspiracy of 1925 with Ashfaq Ullah Khan and Roshan Singh to protest against the British Rule.

  • Bismil was hanged on 19 December 1927 by the British for his involvement in Kakori conspiracy case.
  • Bhagat Singh praised him as a great poet-writer of Urdu and Hindi, who had also translated the books Catherine from English and Bolshevikon Ki Kartoot from Bengali.
Source: The Hindu

The Brus

The National Green Tribunal (NGT) has sought replies from the Forest Department and a district administration in Tripura on a complaint that Bru refugees from adjoining Mizoram were being resettled in a forest.

Who are the Brus?

They are a community indigenous to the Northeast, living mostly in Tripura, Mizoram, and Assam. In Tripura, they are recognised as a Particularly Vulnerable Tribal Group.

The exodus of Brus

  • More than 40,000 Brus — also called Reangs — have been living in the Tripura re• lief camps since 1997 after escaping ethnic violence in Mizoram. About 7,000 refugees returned to Mizoram after nine phases of repatriation till November 30, 2019.The rest stayed put citing security reasons.

·   The repatriation stalemate ended with the signing of the quadripartite agreement on in January 16, 2020, among representatives of Brus, the Ministry of Home Affairs and the Tripura and Mizoram governments.

  • The agreement signed by the Centre, the two state governments and Bru representatives to allow the remaining 32,000 to permanently settle in the state.
Source: The Hindu

Aerosol Nucleation and Atmospheric new particle formation

  • Scientists from the University of Hyderabad measured neutral sub-3nm particles for the first time at an urban location in India. They used AIRMODUS nano Condensation Nucleus Counter (nCNC) to measure particle size distribution in the size range of 1 to 3 nm.
  • The study reported the formation rate of small molecular clusters in sub-3nm size regime, where aerosol nucleation triggers. This work has been recently published in the journal ‘Atmospheric Environment’.

Significance

  • Scientists tracing the concentration, size and evolution of aerosol particles smaller than 3 nanometers at an urban location in India have found frequent formation of sub-3nm aerosol particles in the atmosphere.
  • This has critical importance as a major fraction of these newly formed particles can reach to sizes of cloud condensation nuclei where they have climatic impacts.

Aerosol nucleation and Atmospheric NPF

  • The formation of small molecular clusters of sub-3nm size is technically called aerosol nucleation, and subsequent growth of these newly formed clusters to the large sizes is called atmospheric new particle formation (NPF).

. NPF occurs everywhere in the terrestrial troposphere, and therefore it is a large source of aerosol numbers to the atmosphere.

Source: PIB

Marine Geohazards

  • Scientists have now used 3D seismic data to understand the interaction between bottom surface of marine sediments and the seafloor in the northern Taranaki basin offshore New Zealand. This can help apprehend the precursors of marine geohazards.
  • Scientists from Wadia Institute of Himalayan Geology (WIHG), an autonomous institute under the Department of Science and Technology, Govt. of India, and scientists from Norway and Switzerland used high-resolution 3D seismic data to unravel geomorphology of recurrent cases of movement of soil, sand, regolith, and rock down slope like a solid in Taranaki basin off New Zealand. This is technically called mass wasting of sediments.

When marine geohazards can occur?

Deep down in the ocean, marine sediments move over the base of the ocean, shaping the probability of geohazards. Marine geohazards take place when the seafloor is unstable and is not able to withstand the transport processes of marine sediments from landwards deep into the ocean bottom. In such a situation, placement of drilling rigs becomes hazardous due to instability of the seabed.

About the study

  • With the help of 3D seismic data, the study offers a unique approach to comprehend the recurrent mass wasting processes and also understand how the seabed interacts with the bottom surface of marine sediments.
  • The geological period between 23.03 and 2.5 Million years ago called Neogene succession preserves vertical stacks of mass transport deposits (MTDs) from the Miocene to Pliocene — different epochs that fall within the Neogene geological period. The Miocene (23.03 to 5.33 Mn years ago) is the first geological epoch of the Neogene period and towards the end of this epoch starts the Pliocene epoch (5.33 to 2.5 Mn years ago. The study shows that the mass transport deposits are characterized into blocky-MTDs consisting of moderate to high amplitude, variably deformed rafted blocks, and chaotic masses composed of slides and debris flow deposits indicating a disturbed marine environment.
  • The study will help understand different flow mechanisms associated with sediment movement over the seafloor. It will also shed light on several flow indicators that define the dynamics of the sediment mass movement or the dominant transport directions and mechanism of the mass flow. Understanding of these phenomena can help apprehend precursors of marine geohazards or the nature and physiography of the seafloor over which sediments can move.
  • Similar geomorphologic exercises can be extended to Indian and global marine sedimentary basins.
Source: PIB

Kanopus-V

·  Russia will deliver an advanced satellite system ‘Canopus’ to Iran.

  • Moscow is preparing to give Iran a Kanopus­V satellite with a high­resolution camera. It will vastly improve Iran’s

spying capabilities.

  • It will allow the Iran to monitor facilities of its adversaries across the West Asia,
  • The satellite would be launched in Russia and contain Russian•made hardware.
Source: The Hindu

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