Unearthing the struggle: Navigating Sediment Challenges in the Tropical Landscape
Romit Rajendra Kaware
Research fellow at MRC
Key Highlights
- Understanding sediment dynamics is crucial to understanding biological cycles in marine ecosystems.
- The Himalayan Rivers transport enormous sediment loads to the Bay of Bengal, hampering anthropogenic activities.
- Increased sediment load affects the marine ecosystem, water quality and exploration missions.
- Sustainable utilization of resources requires an integrated approach that combines sediment management with urban development.
Water bodies comprise 70% of the Earth’s surface and are vital in shaping life and the global economy. They are essential for biological cycles and the survival of life, with sediments playing a significant role in influencing these bodies. These sediments cover two-thirds of continents and nearly the entire ocean floor, with 89% of Earth’s surface sediments supporting the biosphere and forming rocks. Human activities substantially impact sedimentation and erosion, underscoring the importance of a comprehensive understanding of our environmental impact and the interconnected relationship between the environment and humans. This holds, especially in the case of the Indian Ocean, which is a critical route for global trade, particularly in energy. The extensive and densely populated coastal areas surrounding the Indian Ocean include some of the fastest-growing regions in the world.
Globally, Asian rivers are major contributors to sediment in the world’s seas, transporting around 6300 million tonnes of silt to coastal waters annually. Between 20 and 30% of the world’s ocean sediment enters the Bay of Bengal annually, constituting 15 to 20% of the total global sediment flux. The Ganga–Brahmaputra and Indus rivers contribute about 70% of this, while the remainder originates from peninsula rivers. The Deccan Traps, prevalent in the Indian peninsula, contribute debris to these rivers. The Ganges-Brahmaputra River system experiences significant variations in silt movement daily, seasonally, and throughout the year. Notably, the Alaknanda River, a Ganga headstream, exhibits five times the global average for physical weathering and six times the global average for chemical erosion.
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Romit Rajendra Kaware
Research fellow at MRC
Romit Rajendra Kaware is a recent graduate from the Indian Institute of Technology (IIT) Delhi, who holds a Bachelor’s degree in Civil Engineering. He is serving as a research fellow at MRC. His primary focus is on scientific research in structures and materials, as it has the capability to enhance his comprehension of the methodologies employed in constructing resilient infrastructure. Romit is deeply enthusiastic about applying his expertise in civil engineering to the maritime sector to foster sustainable development for our ecological resources.