Impact of Tsunami on Soils of South Andaman
Published: Jan 31, 2009
Photo: Dr S Ghoshal Chaudhuri
1. The author collecting samples from the low lying coastal areas where sea water intruded only during tsunami and then receded permanently - Situation I 2. Low lying coastal areas where sea water reaches with every high tide and recedes with low tide - Situation II 3. Low lying coastal areas where there is permanent stagnation of sea water and the depth of impounding increases with high tide - Situation III 4. Saline sea mud deposition by the tsunami on agricultural lands.
Abstract: The 2004 tsunami in coastal areas of Andaman and Nicobar Islands has not only devastated lives but also ecosystems rendering the soil and water resources salt affected. Periodical soil and water sampling in selected locations of South Andaman reveals that post tsunami, the soluble salt concentration increased markedly. This was, however, offset by subsequent high rainfall of 3774 mm in 2005 resulting in drastic reduction in the salinity levels at these sites to almost close to pre tsunami levels. The gradual recovery process of the salt affected sites can be augmented by adoption of appropriate location specific engineering and agronomic management strategies.
TO READ THE FULL ARTICLE
Already have an account? Log In
Keep reading with one of these options :
OR
MORE ARTICLES
Myriad Challenges of the Coasts of India
Monitoring from space, aerial and in situ platforms in coastal regions will help develop models for interactions between ecological and anthropogenic processes, helping sustainable management of coast...
Perspectives on Coastal Research
The Indian coastline sustains unique habitats that are subjected to increasing anthropogenic stressors. The National Centre for Coastal Research (NCCR), engaged in addressing coastal concerns over thr...
Our Fragile Coasts: Scientific Approaches and Solutions
The Indian coasts hold diverse geomorphological features—mudflats, rocky shores, cliffs, sandy beaches and deltaic reaches that shelter unique ecosystems. However, significant sections of the coastlin...
Need of Flood Warning System for Coastal Metropolis
Integrated Flood Warning System (IFLOWS) is an integrated GIS-based decision support system developed for Chennai and Mumbai that provides flood inundation scenarios and helps state governments to put...