Subject/Topic Wise Current Affairs for UPSC Exam

Land resource

Rock Glaciers

A study has pointed out that the 100 active permafrost structures identified in Jhelum basin, can cause catastrophic disasters in future. A rock glacier is a mass of rock, ice, snow, mud, and water that moves slowly down a mountain under the influence of gravity. Formation - They typically form in mountainous regions where there is a combination of permafrost, rock debris, and ice. A pre-existing glacier may accumulate debris and rocks as it moves. Over time, if the glacier recedes or thaws, the debris-covered ice can transform into a rock glacier. Permafrost - Thick ground layers frozen for at least 2 years Types - They are classified as ‘active’…

14 January, 2024 Land resource

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Kadalundi Mudflats

Sand sedimentation is causing the mudflats of Kadalundi to vanish. Kadalundi – A village on the southwest coast in Kozhikode, Kerala that had about 8 hectares of nutrient rich intertidal mudflats in the early 2000s. Kadalundi River is the 6th longest River of Kerala. It originates from the Western Ghats and has 2 tributaries Olipuzha and Veliyar. The Kadalundi River and the Chaliyar River merges with the Arabian Sea at Kadalundi. Threat - Today, it has reduced to about 1 hectare. Sedimentation of sand deprives prey to migrant birds. Mangrove proliferation is aggressively invasive and they never attracts migratory birds because of predator’s presence. Kerala floods of 2018 and…

20 November, 2023 Land resource