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TNPSC Current affairs April 2017 15 for group 1 & group 2 mains

TNPSC Current Affairs April 2017

CSIR-NIO develops a robot to dive deep to study Ocean (SREP)

Scientist at the Dona Paula based Group of CSIR-National Institute of Oceanography (CSIR-NIO) has developed a robotic platform, which can be stationed at any depth from 0-200 meters to track Oceanic Process

Scientists at CSIR-NIO have developed a robotic platform, Seabed Resident Event Profiler (SREP), which can be stationed at any water depth down to 200 meters along the Indian Ocean.
SREP has been tested during the voyage of RV Sindhu Sadhana along the Coast.

About SREP:
  • Seabed Resident Event Profiler(SREP) is designed mainly to studies related to Monsoon, global climate and upwelling
  • It is designed to track oceanic processes such as upwelling that occurs regularly during June to September  which is important for the ecosystem sustenance and fishery.
  • It has several sensors that can detect the conditions associated with upwelling such as low temperature, low oxygen, high nutrients, and changes in density patterns are placed on this platform.
  • It records the water column information regularly as programmed at every 10 to 25cm during every profile four times a day, stores the data and communicates the same to users at the institute.
  • It has configured to sit on the seabed for 100 days continuously 

What is Upwelling:

When wind-blown parallel to ocean surface which push the surface water offshore and water is drawn from the below to replace the surface water which has been pushed away. The upward movement of water is called Upwelling.


The water rises to the surface during upwelling is typically colder and is rich in Nutrients. These nutrient fertilize surface water, which encourage growth of seaweeds and phytoplankton and make Good Fishing Grounds.

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