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CISF - Shanmugam IAS academy in coimbatore - TNPSC/UPSC
CISF

SECURITYPEDIA

What’s in news?

The Central Industrial Security Force (CISF) launched Securitypedia, an online encyclopaedia.

Key Data’s:

  • Securitypedia, launched by the Central Industrial Security Force (CISF) is an online encyclopedia which incorporates a wide gamut of security-related practices across the globe.
  • A special feature called CISF Tube will provide with videos relevant to CISF.
  • It will also have a platform where CISF officials can contribute by writing blogs on professional issues.
  • The technical research and development lab of CISF has collaborated with the National Centre of Excellence in Technology for Internal Security (NCETIS) at IIT Mumbai and the National Remote Sensing Centre (NRSC) for the commissioning of the encyclopaedia.
  • The CISF has established a technical lab at National Industrial Security Academy (NISA) in Hyderabad to maintain and update technical knowledge about the latest innovations in the field of safety and security that can be used in places like airports and government offices.
  • At present, it will be accessible only CISF personnel. Depending upon the outreach and feedback, the Securitypedia will be made accessible to other paramilitary forces too.

 

UNDERWATER MELTING

What’s in news?

A new study tells, Underwater melting of tidewater glaciers is occurring much faster than previously thought.

Key data’s:

  • The findings are based on a new method developed by the researchers Rutgers University and the University of Oregon that directly measures below the waterline.
  • According to the new study, scientists have been estimating the impact of a critical aspect of glacier melt all wrong, and in fact it’s 100 times worse than previously believed. 
  • Tidewater glaciers around the globe are retreating and raising sea levels globally.
  • This rising concern creates implications for our understanding of sea level rise as a result of climate change, which threatens to flood islands and coastal cities and displace millions of people.
  • Submarine melting has been implicated as a trigger for this glacier retreat, but we have had no direct measurements of melting, let alone how it might vary in time.
  • In our study, we show that the prevailing theory for melt significantly underestimates melt rates.

Calculation process:

  • They used sonar to scan the glacier’s underwater face.
  • Downstream measurements of currents, temperature and salinity to estimate the meltwater flow.
  • Radar to measure the glacier’s speed above water.
  • Time-lapse photography to detect iceberg calving.
  • Weather station data to measure the surface melt from the glacier. 

 

Links to note:

https://www.vice.com/en_in/article/43jkvg/warm-water-is-melting-glaciers-100-times-faster-than-we-thought

https://cosmosmagazine.com/climate/glacier-melting-underwater-up-to-100-times-faster-than-thought

https://www.iasipstnpsc.in/artificial-snow/

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