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Sunday, July 14th, 2024

The mystery of Adam’s Bridge is solved! ISRO scientists have created the first underwater map of Ram Setu


New Delhi: ISRO scientists have created the most detailed map of Ram Setu till date using data from a US satellite. The map is expected to help resolve long-standing disputes over the construction of the land bridge between India and Sri Lanka. Scientists at the Indian Space Research Organisation (ISRO) have created the first detailed undersea map of Ram Setu, also known as Adam’s Bridge, using data from a US satellite. Scientists believe the map could help resolve long-standing disputes over the construction of Ram Setu.

ISRO scientists’ map on Ram Setu

This map is the first underwater map of the 29 km long Ram Setu, showing its height of 8 metres above sea level. Scientists from ISRO’s National Remote Sensing Centre said in their study published in the journal ‘Scientific Reports’, “This report is the first to provide essential details about Adam’s Bridge using water permeable photons from NASA’s satellite ICESat-2. Our findings may help in further improving the understanding of Adam’s Bridge and its origin.

The map under the sea surfaced

The satellite is equipped with a laser altimeter that allows photons or light particles to penetrate water to measure the height of any structure in shallow areas of the ocean. Adam’s Bridge stretches from Dhanushkodi, the southeastern point of Rameswaram Island in India to the northwestern tip of Talaimannar in Mannar Island in Sri Lanka. It is an underwater ridge made up of a series of shallow limestone cliffs, parts of which are visible above water but there are no rocks or vegetation.

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Special details about Adams Bridge

NRSC researchers from Jodhpur and Hyderabad analysed images taken from NASA satellites to find out many intricate details about Adams Bridge. They said that 99.98 per cent of the bridge is submerged in sea water, due to which survey of the area from ships is not possible. Scientists detected 11 narrow channels with a depth of 2-3 meters under the bridge, which facilitate free flow or exchange of water between the Gulf of Mannar and the Palk Strait.

Geological evidence suggests that the origins of India and Sri Lanka are closely linked. Both were part of the ancient continent of Gondwana, which drifted northwards into the Tethys Sea and moved to its current position after colliding with another continent called Laurasia about 35-55 million years ago. Scientists say that sea level fluctuations associated with such activities and glacial melting may have caused the land bridge to come up. Temple records at Rameswaram show that the bridge was above water until 1480 and was submerged during a cyclone.

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