TNPSC Current Affairs June 06, 2020

www.tnpsc.academy – TNPSC Current Affairs June 06, 2020 (06/06/2020)

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Topic: Latest inventions on Science and Health

LiDAR- Light Detection and Ranging

Archaeologists are using LiDAR data to continue their researches amid global pandemic. In this method, they make high-resolution maps using laser light.

What is LiDAR?

It is a remote sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to the Earth.

These light pulses—combined with other data recorded by the airborne system— generate precise, three-dimensional information about the shape of the Earth and its surface characteristics.

How it works?

A lidar instrument principally consists of a laser, a scanner, and a specialized GPS receiver.

Airplanes and helicopters are the most commonly used platforms for acquiring lidar data over broad areas.

LiDAR follows a simple principle — throw laser light at an object on the earth surface and calculate the time it takes to return to the LiDAR source. Given the speed at which the light travels (approximately 186,000 miles per second), the process of measuring the exact distance through LiDAR appears to be incredibly fast.

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Topic: Welfare Oriented Govt Schemes and their Utilities

Nagar van scheme

With biodiversity the theme of World Environment Day (WED), the ministry of environment, forest and climate change (MoEFCC) has launched ‘Nagar Van’ (city forest) scheme.

About Nagar Van scheme:

The scheme emphasises on urban forestry. Under the scheme, around 200 urban forests are to be developed all over the country in the next five years. The scheme will also provide an opportunity to the states to manage urban ecosystems.

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Topic: International Events, Places in News

Oil spill in Russia’s Arctic region

Russia has declared a state of emergency after a power plant fuel leak in its Arctic region caused 20,000 tonnes of diesel oil to escape into a local river, turning its surface crimson red.

Where the incident took place?

The oil has been discharged into Ambarnaya river. The river is part of a network that flows into the environmentally sensitive Arctic Ocean.

Emergency measures are announced within Russia’s Krasnoyarsk Region, located in the vast and sparsely populated Siberian peninsula. The power plant is located near the Region’s Norilsk city, around 3000 km northeast of Moscow.

How did the leak happen?

The thermoelectric power plant at Norilsk is built on permafrost, which has weakened over the years owing to climate change. This caused the pillars that supported the plant’s fuel tank to sink., leading to a loss of containment on May 29.

Reports said that around 20,000 tonnes of diesel oil was released into the Ambarnaya river, which has since drifted 12 km on its surface.

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Topic: Latest Diary of Events, Current Socio-Economic Issues

Sundarbans devastated by cyclone Amphan

The powerful cyclone that struck India and Bangladesh last month passed through the vast mangrove forests of the Sundarban delta.

What’s the matter?

The storm’s impact was devastating for the millions who live in the Sundarbans. About 28% of the Sunderbans has been damaged.

Despite the massive plantation drives, it may take years to restore the mangroves. Experts say the mangroves not only reduce wind speed but breaks the waves during a storm surge caused by a cyclone.

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Topic: India and its Neighborhood Countries

Petrapole

It is the Indian side of Petrapole-Benapole border checkpoint between India and Benapole of Bangladesh, on the Bangladesh-India border, near Bongaon in North 24 Parganas district of West Bengal.

Petrapole border is the only land port in south Bengal. It is also the largest land customs station in Asia.

The landport alone accounts for nearly 60 per cent of the bilateral trade between India and Bangladesh.