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Submergence of the Islands


Submergence of the Islands
Photo Information
Copyright: Subhash Ranjan (sranjan) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 489 W: 63 N: 1877] (5784)
Genre: Landscapes
Medium: Color
Date Taken: 2008-12-10
Categories: Seascape
Camera: Olympus Sp 510uz
Photo Version: Original Version
Date Submitted: 2009-06-14 5:03
Viewed: 5256
Points: 0
[Note Guidelines] Photographer's Note
I have taken this aerial view to show how tidal river(s) & its banks have sunk into the sea after the tsunami of December 2004 (as an effects of geographical tilt/uplift caused by the plate tectonics played between Indo-Andaman, Burma & Sunda plates). It caused huge changes in the coastal systems of Andaman and Nicobar Island.
The old channels of the creek are still visible, clearly outlined by dead mangrove trees. Mangrove forests lie submerged at Sippighat, Port Blair.

PS: Sorry for the quality of photograph as I could not negotiate my camera within the helicopter.

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December 26, 2004 will be etched forever on our memories for the tsunami that killed lakhs of people and caused unprecedented damage in the coastal regions of South Asia and South East Asia.

Among the worst hit areas in India were the fragile Andaman and Nicobar Islands, particularly the southern group of the Nicobars. Another important indicator of the damage is the area of agricultural and horticultural land that suffered temporary or permanent submergence.

Proof of the damage caused to mangroves and littoral forests lies everywhere. A continuous wall of submerged, dead, brown, decaying timber of various kinds engulfs every single island. The extensive damage to these forests has also had catastrophic implications for a diverse range of rare and endemic flora and fauna that inhabited these systems.

The explanation of this stark contrast lies in the earthquake that set off the tsunami. The tectonic activity initiated in December 2004 caused a significant shift in the lay of the islands. Assessments done by Dr. Roger Bilham of the University of Colorado indicate that the northern parts of the Andaman group of islands experienced a permanent average uplift of four to six feet (1.2 metres to 1.8 metres) while most parts of the Nicobars went significantly under - four feet in Car Nicobar and a staggering 15 feet (4.57 m) at the southernmost tip - Indira Point on Great Nicobar Island. The pivot of this swing experienced by the islands can be calculated to be roughly located south of Port Blair.

Refer: Tilt and Turmoil in the Andamans


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