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Subject: Geography

  • Study finds a Shift in Peak Time of Maximum Rainfall

    Why in the News?

    A recent study published in Geophysical Research Letters revealed changes in the amount and timing of rainfall using GSMaP Data between 2001-2010 and 2011-2020.

    About Global Satellite Mapping of Precipitation (GSMaP)

    • GSMaP is a specialized precipitation product developed through collaboration between ISRO (Indian Space Research Organisation) and JAXA (Japan Aerospace Exploration Agency).
    • It provides high-resolution precipitation data with a 0.1° x 0.1° grid and one-hour temporal resolution, focusing on the Indian subcontinent since March 2000.
    • The data supports rainfall trend analysis, climate modelling, and water resource management.

    Study finds a Shift in Peak Time of Maximum Rainfall

    Key Findings of the Study:

    • Rainfall Trends:
      • West-Central India: Increased daily rainfall (2 mm/day) from 2011-2020 compared to 2001-2010.
      • Eastern India: A decrease of ~1 mm/day in rainfall during the same period.
      • Regional Shifts: Northeastern and eastern India saw decreased rainfall, while the Indo-Gangetic Plain and southern India experienced increases.
    • Vegetation & Soil Moisture:
      • West-Central India saw an increase in vegetation (NDVI from 0.2 to 0.4) and soil moisture linked to increased rainfall.
      • Eastern India had decreased soil moisture during the same period.
    • Shifts in Peak Rainfall Timing:
      • Indo-Gangetic Plain: Peak rainfall advanced by 2-4 hours.
      • West-Central India: Peak rainfall delayed by 1-2 hours.
    • Factors responsible for this Shift:
      • Higher soil moisture supports rainfall, while reduced moisture, particularly in eastern India, decreases rainfall.
      • Higher aerosol concentrations in polluted areas like the Indo-Gangetic Plain lead to earlier rainfall peaks.
      • Changes in atmospheric circulation, topography, and coastal influences also affect rainfall distribution and timing.
    [UPSC 2012] Consider the following statements:

    1. The duration of the monsoon decreases from southern India to northern India.

    2. The amount of annual rainfall in the northern plains of India decreases from east to west.

    Which of the statements given above is / are correct?

    (a) 1 Only (b) 2 Only (c) Both 1 and 2 (d) Neither 1 nor 2

     

  • What is Atmospheric River?

    Why in the News?

    Earlier this month, severe weather in the United States, including heavy rainfall, strong winds, and thunderstorms, was caused by an Atmospheric River.

    What is an Atmospheric River?

    • An atmospheric river is a narrow, fast-moving band of moisture and wind that transports large amounts of water vapor across vast distances.
    • They form when large-scale weather patterns align, creating channels of moisture transport from tropical oceans, guided by low-level jet streams toward the coast.
    • They typically span 402-606 km in width and can extend over 1600 km in length.
    • The most powerful atmospheric rivers transport moisture equivalent to the Mississippi River’s flow.
    • Example: The Pineapple Express, a well-known atmospheric river, transports moisture from Hawaii to the West Coasts of the U.S. and Canada.
    • The intense rainfall from atmospheric rivers leads to flooding, mudslides, and infrastructure damage, with wind speeds comparable to hurricanes.

    Impact and Climate Change:

    • Rising global temperatures cause more water to evaporate, and warmer air can hold more moisture.
    • For every 1°C increase, the atmosphere can hold 7% more moisture, leading to stronger storms.
    • Research indicates such events will likely grow longer and more intense.
    [UPSC 2023] With reference to the Earth’s atmosphere, which one of the following statements is correct?

    (a) The total amount of insolation received at the equator is roughly about 10 times of that received at the poles.

    (b) Infrared waves are largely absorbed by carbon dioxide that is concentrated in the upper atmosphere.

    (c) Infrared waves are largely absorbed by water vapour that is concentrated in the lower atmosphere.  

    (d) Ultraviolet rays are absorbed by the ozone layer lying in the ionosphere.

     

  • What are Mesoscale Convective System (MCS)?

    Why in the News?

    A recent study in Nature Geoscience suggests that soil moisture levels could help predict severe thunderstorms, like mesoscale convective systems (MCSs), especially in regions like India.

    About Mesoscale Convective Systems (MCS):

    • MCSs are larger than individual thunderstorms but smaller than larger weather systems like cyclones.
    • They typically cover areas between 100 to 1,000 km in diameter.
    • They form when warm, moist air rises, creating storms that feed off each other, growing in size and intensity as they move across the region.
    • They can cause flash floods, damaging winds, and severe thunderstorms, and are often responsible for large-scale weather events.
    • In tropical regions, MCSs account for 50 to 90 % of total rainfall, making them a major cause of severe weather-related damage.
    • A notable example is the March 2024 thunderstorm in West Bengal, which caused significant property damage and loss of life.

    Soil Moisture’s Role in MCS as per the Study:

    • Shifts in soil moisture can be detected two to five days before the formation of storms, providing critical lead time for early warnings in vulnerable regions.
    • Contrasting soil moisture levels over large areas (hundreds of kilometers) lead to changes in atmospheric conditions, including A notable example is the March 2024 thunderstorm in West Bengal, which caused significant property damage and loss of life.
    • Larger contrasts in moisture content between dry and wet regions cause greater temperature differences, which in turn lead to changes in wind direction and speed.
    • These variations contribute to turbulence, making storms more intense and spreading rainfall over a wider area.
    [UPSC 2013] During a thunderstorm, the thunder in the skies is produced by the

    1. meeting of cumulonimbus clouds in the sky 2. lightning that separates the nimbus clouds 3. violent upward movement of air and water particles

    Select the correct answer using the codes given below:

    (a) 1 only (b) 2 and 3 (c) 1 and 3 (d) None of the above produces the thunder

     

  • The crisis in India’s cotton production, and what can help

    Why in the News?

    India’s cotton production has dropped by 25% over the last 10 years because of the pink bollworm. Some seed companies have created new genetically modified cotton varieties that can resist this pest, but government rules are delaying their approval and use.

    Why has cotton output fallen despite Bt cotton’s earlier success?

    • Resistance Development in Pests: The pink bollworm (PBW), a monophagous pest, developed resistance to Bt cotton toxins (cry1Ac and cry2Ab) over time. Eg: A study published in Nature showed PBW resistance by 2014, just 12 years after Bt cotton’s introduction.
    • Pest Adaptability and Short Life Cycle: PBW’s short life cycle (25–35 days) allows multiple generations in one crop season, accelerating resistance buildup. Eg: In central India, PBW reached economic threshold levels by 2014, impacting yields.
    • Yield Stagnation and Decline: The national average lint yield rose to 566 kg/ha in 2013–14 but has fallen to around 436–437 kg/ha in recent years. Eg: This drop mirrors increased pest pressure and reduced effectiveness of Bt technology.
    • Increased Import Dependence: Falling domestic production has led to India importing more cotton than it exports. Eg: In 2024–25, imports are projected at 30 lakh bales vs exports of 17 lakh bales.
    • Lack of New GM Approvals: Regulatory and political hurdles have stalled the approval of next-gen GM cotton hybrids resistant to PBW. Eg: No new GM cotton hybrid has been commercialised since Bollgard-II in 2006.

    How has the pink bollworm turned India into a net cotton importer?

    • Destruction of Cotton Bolls and Lint Quality: PBW larvae bore into cotton bolls, feeding on seeds and lint, reducing both yield and fibre quality. Eg: This led to a production drop from 398 lakh bales (2013–14) to just 294 lakh bales (2024–25 projected) — the lowest since 2008–09.
    • Resistance to Bt Cotton: PBW developed resistance to the Bt toxins (cry1Ac and cry2Ab) used in GM cotton, making current hybrids ineffective. Eg: Resistance was first noted in central India around 2014, eventually spreading to southern and northern zones.
    • Decline in Exports, Rise in Imports: As production fell and quality declined, exports dropped and imports surged. Eg: In 2024–25, India is expected to import 30 lakh bales but export only 17 lakh bales, reversing its earlier status as a net exporter.

    Which new genetic technologies are Indian seed companies using to combat PBW resistance in cotton crops?

    • Introduction of Novel Bt Genes: Companies are using Bt genes not previously deployed in India to overcome existing PBW resistance. Eg: Bioseed Research India is conducting trials with its ‘cry8Ea1’ gene-based hybrid under the proprietary BioCotX24A1 event.
    • Use of Synthetic Bt Genes: Synthetic versions of Bt genes are engineered to enhance toxicity and overcome pest resistance. Eg: Rasi Seeds has developed hybrids expressing a synthetic cry1c gene for improved resistance to PBW.
    • Deployment of Chimeric Bt Genes: Chimeric genes combine segments of multiple Bt genes to create a novel protein with broader insecticidal action.Eg: Ankur Seeds, in collaboration with NBRI, is trialing cotton hybrids using a chimeric Bt protein from Event 519.

    When did the pink bollworm start crossing the economic threshold level in various cotton-growing zones of India?

    • Central Zone (Maharashtra, Gujarat, Madhya Pradesh): PBW crossed the ETL around 2014, marking the beginning of widespread yield loss in the heartland of cotton production. Eg: Farmers in Maharashtra began reporting severe PBW damage post-2014 despite using Bt cotton.
    • Southern Zone (Telangana, Andhra Pradesh, Karnataka, Tamil Nadu): The pest breached the ETL by 2017, affecting the second major cotton belt in the country. Eg: Telangana experienced major crop losses during the 2017–18 season due to PBW infestation.
    • Northern Zone (Punjab, Haryana, Rajasthan): PBW reached ETL in the northern states by 2021, completing its spread across all major cotton-growing regions. Eg: In 2021, Haryana reported pink bollworm infestation even in previously unaffected areas.

    How are regulatory hurdles affecting the commercialisation of new GM cotton hybrids in India?

    • Lengthy Approval Process: Multi-stage field trials (event selection, BRL-1, BRL-2) take years before commercial approval is granted. Eg: Bioseed’s ‘cry8Ea1’ GM cotton is still in BRL-1 trial phase, needing further years of testing before release.
    • Lack of New GM Approvals Since 2006: No new GM cotton hybrid has been approved for commercial cultivation since Monsanto’s Bollgard-II in 2006. Eg: Despite several companies developing PBW-resistant varieties, commercialisation remains stalled.
    • Opposition from States and Activist Groups: State-level permissions and activist resistance delay or block field trials, affecting research and rollout. Eg: Rasi Seeds and Ankur Seeds await approvals for first-year trials amid regulatory scrutiny and local objections.

    What advantages does India have in cotton production and trade?

    • Favorable Climate and Large Cotton-Growing Area: India has a vast area suitable for cotton cultivation, with diverse agro-climatic zones supporting long growing seasons. Eg: India is the world’s largest cotton producer, with major states like Maharashtra, Gujarat, and Telangana contributing significantly.
    • Low Export Duties Compared to Other Countries: India faces lower tariffs on its textile exports in key markets like the US, making its products more competitive. Eg: Under the US’s “reciprocal tariff” policy, Indian textile exports face only 27% duty, while China’s face 54% and Bangladesh’s 37%.

    Way forward: 

    • Accelerate Regulatory Approvals for Next-Gen GM Cotton: The government should streamline and fast-track the approval process for new GM hybrids with novel, synthetic, or chimeric Bt genes to restore cotton productivity and pest control efficacy. Eg: Timely clearance of Bioseed’s cry8Ea1 and Rasi’s synthetic cry1c cotton hybrids can help tackle PBW resistance.
    • Promote Integrated Pest Management (IPM) and Farmer Awareness: Combine genetic solutions with IPM strategies—crop rotation, pheromone traps, and timely pesticide use—to delay resistance buildup. Launch nationwide farmer education programs on early detection and field hygiene. Eg: Maharashtra’s IPM pilot schemes have shown promise in reducing PBW infestations when practiced consistently.

    Mains PYQ:

    [UPSC 2021] What are the present challenges before crop diversification? How do emerging technologies provide an opportunity for crop diversification?

    Linkage:  Vulnerability of a monoculture system relying heavily on Bt cotton, crop diversification could be a strategy to reduce dependence on a single crop and potentially break pest cycles, although the article focuses on technological solutions within cotton itself.

  • Hadean Protocrust

    Why in the News?

    A study from Macquarie University, Australia, suggests that plate tectonics may have started earlier than previously thought, with signs of it possibly existing in the Hadean protocrust even before the plates began to move.

    What is Hadean Protocrust?

    • The Hadean protocrust is the Earth’s first crust, formed within the first 200 million years of the planet’s creation.
    • During this time, the surface was mostly molten and constantly hit by space rocks, making it very hot and unstable.
    • Over time, parts of the molten surface began to cool and solidify, creating the first crust.

    Hadean Protocrust

    Back2Basics: Hadean Aeon

    • The Hadean Aeon is the earliest geological eon in Earth’s history, lasting from about 4.6 billion to 4 billion years ago.
    • The surface was incredibly hot and volcanic activity was widespread, often described as “hellish.”
    • It was followed by the Archean Eon (about 4 billion to 2.5 billion years ago), characterized by the formation of Earth’s first stable crust, the beginning of plate tectonics, and the earliest known forms of life.
    • As the surface cooled, the thick parts of the crust formed the first continents, which moved on the hot, semi-fluid layer beneath them called the asthenosphere.

    Key Findings of the Recent Study:

    • The researchers found that the chemical signatures linked to plate tectonics might have appeared earlier, even when the Earth’s crust was still forming in the Hadean protocrust.
    • This discovery suggests that early movements of the Earth’s crust, similar to plate tectonics, could have happened before plates began to move as we know them today.
    • The study used models and experiments to support these ideas, but further research is needed to confirm these findings.
    [UPSC 2013] Which of the following are responsible for bringing dynamic changes on the surface of the earth?

    1. Electromagnetic radiation 2. Geothermal energy 3. Gravitational force 4. Plate movements 5. Rotation of the earth 6. Revolution of the earth

    Which of the above are responsible for bringing dynamic changes on the surface of the earth?

    (a) 1 only (b) 2 and 3 only (c) 2, 4 and 6 only (d) 2 and 4 only

     

  • Massive Earthquake hits Myanmar and Thailand

    Why in the News?

    A powerful 7.7 magnitude earthquake struck Myanmar, with its epicentre near Mandalay, the country’s second-largest city.

    Massive Earthquake hits Myanmar and Thailand

    What caused the Earthquake in Myanmar?

    • Myanmar is situated between the Indian Plate and the Eurasian Plate, which makes the region seismically active.
      • The Sagaing Fault, running from north to south through Myanmar, marks the boundary of these plates.
      • It is an active fault line that has caused significant earthquakes in the past, including a 7.9 magnitude earthquake in 1912 and a 6.9 magnitude earthquake in 2016.
    • The Indian Plate was moving northward along the Sagaing Fault relative to the Eurasian Plate. The friction and stress built up along this fault led to a sudden release of energy, resulting in the earthquake.
    • The earthquake’s epicentres was located 17.2 km from Mandalay, Myanmar’s second-largest city, at a depth of just 10 km.

    Why are Shallow Earthquakes more destructive?

    • Proximity to the Surface: Shallow earthquakes (less than 70 km deep) cause intense shaking. For example, the Myanmar earthquake occurred at 10 km, leading to rapid, forceful seismic waves and extensive damage.
    • Energy Release: Shallow earthquakes retain more energy in seismic waves, causing stronger surface shaking and greater destruction.
    • Higher Intensity: Shallow quakes produce higher intensity shaking, resulting in more structural damage compared to deeper quakes, where seismic waves lose energy.
    • Aftershocks: Shallow earthquakes often lead to more intense aftershocks, further damaging already weakened structures. The Myanmar earthquake had aftershocks, including one with magnitude 6.4.

    Back2Basics: Earthquake and Related Terminologies

    • Earthquake is a sudden shaking of the ground caused by energy release from tectonic plate movements or volcanic activity, generating seismic waves.
    • Key Terminologies:
      • Focus (Hypocenter): The point inside the Earth where the earthquake originates, deep beneath the surface.
      • Epicenter: The point on the Earth’s surface directly above the focus, usually the most affected area.
      • Seismic Waves: Waves that carry the energy released during an earthquake and cause ground shaking.
      • Fault: A crack or fracture in the Earth’s crust where movement occurs, often causing earthquakes.
      • Magnitude: A measure of the earthquake’s size or energy, commonly measured on the Richter scale.
      • Intensity: The strength of shaking at specific locations, measured by the Modified Mercalli Intensity (MMI) scale.

    Types of Earthquake Waves:

    • Body Waves: Travel through the Earth’s interior, detected first by seismographs.
      • Primary Waves (P-Waves): Fastest, compression waves that move through solids and liquids.
      • Secondary Waves (S-Waves): Shear waves, slower than P-waves, that move through solids only.
    • Surface Waves: Travel along the Earth’s surface, slower but cause more damage.
      • Love Waves: Move side-to-side horizontally, causing significant damage.
      • Rayleigh Waves: Cause elliptical ground motion, similar to ocean waves, very destructive.

     

    [UPSC 2021] Consider the following statements:

    1. In a seismograph, P waves are recorded earlier than S waves.

    2. In P waves, the individual particles vibrate to and fro in the direction of waves propagation whereas in S waves, the particles vibrate up and down at right angles to the direction of wave propagation.

    Which of the statements given above is/are correct?

    (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

     

  • 50 Years of Farakka Barrage

    Why in the News?

    It was nearly 50 years ago, that India had completed the construction of the Farakka Barrage.

    About Farakka Barrage

    • The Farakka Barrage is located on the Ganges River in Murshidabad District, West Bengal, India, about 18 km from the Bangladesh border.
    • The barrage measures 2,304 meters (7,559 feet) in length.
    • Its construction began in 1962 and was completed in 1970 at a cost of 1 billion dollars. It became operational on April 21, 1975.
    • The Feeder Canal is approximately 42 km long, connecting the barrage to the Hooghly River.
    • Purpose:
      • It diverts water to the Hooghly River to maintain the navigability of Kolkata Port and to flush out sediment from the river.
      • It diverts 1,800 cubic meters per second of water from the Ganges.
    • Construction Details:
      • Built by Hindustan Construction Company, it consists of 109 gates, with 108 over the river and one over low-lying land as a precaution.
      • Supports the Farakka Super Thermal Power Station.
    • The 1996 Ganges Water Sharing Treaty ensured fair water distribution:
      • 70,000 cusecs or less: 50% to both India and Bangladesh.
      • 70,000 – 75,000 cusecs: India gets 35,000 cusecs, Bangladesh the balance.
      • 75,000 cusecs or more: India receives 40,000 cusecs, Bangladesh gets the remainder.

    Significance in India-Bangladesh Water Sharing:

    • The Farakka Barrage is crucial for irrigation in West Bengal, supporting agriculture during the dry season.
    • Bangladesh, particularly Mongla and Khulna, depends on the Ganges for water.
    • The diverted water has led to water scarcity, impacting agriculture, fisheries, and livelihoods in Bangladesh, causing diplomatic tensions.
    • This treaty ensures equitable distribution and guarantees a minimum flow for Bangladesh.
    • Issues: 
      • Water diversion has led to salinization and soil degradation in Bangladesh, affecting agriculture and freshwater supplies.
      • Biodiversity loss and damage to the Sundarbans mangrove forests have been significant environmental impacts.
    [UPSC 1997] The canal-carrying capacity of Farakka is:

    (a) 40,000 cusecs (b) 60,000 cusecs (c) 80,000 cusecs (d) 100,000 cusecs

     

  • Himalayan tragedy: On avalanches in the Himalayan States

    Why in the News?

    Earlier this week, the Indian Army and Indo-Tibetan Border Police rescued 23 workers trapped under snow and ice after an avalanche in Mana village, Uttarakhand.

    What were the key challenges faced by the rescue teams during the avalanche operation in Mana Village?

    • Harsh Weather Conditions: The rescue teams operated under heavy snowfall and extreme cold at an elevation of 10,500 feet above mean sea level.
    • Blocked Access Routes: Snow-blocked roads required the use of helicopters for evacuation, complicating logistics and delaying rescue efforts.
    • Physical Exhaustion: Rescuers worked in near-continuous 60-hour shifts, demanding immense physical and mental stamina.
    • Buried Structures: Containers housing workers were buried under several feet of snow, ice, and rock, making detection and extraction challenging.
    • Limited Visibility and Navigation: Poor weather conditions hindered visibility, requiring the use of advanced technology like drone-based detection systems.

    Why is Mana village particularly vulnerable to avalanches and other natural disasters?

    • High-Altitude Location: Situated at 10,500 feet above sea level in the upper Himalayas, the village experiences heavy snowfall and extreme weather, increasing the risk of avalanches. Example: The recent avalanche buried containers under several feet of snow, making rescue operations challenging.
    • Geological Instability: The Himalayan region is tectonically active, making the terrain prone to landslides, avalanches, and other natural hazards. Example: Frequent landslides during the monsoon season disrupt roads and infrastructure in Uttarakhand.
    • Seasonal Climate Extremes: Harsh winters with severe snow accumulation create unstable snowpacks that can trigger avalanches. Example: Villagers traditionally migrate to lower areas like Gopeshwar during winter to avoid extreme weather risks.
    • Construction and Human Activity: Ongoing infrastructure projects, such as road-building by the Border Roads Organisation (BRO), disturb the fragile environment and increase disaster risks. Example: Workers were caught in an avalanche while working on a BRO construction site.
    • Proximity to Glacial Zones: Close to glacial areas where melting ice and shifting snowpacks heighten the probability of snow slides. Example: Melting glaciers in the region have previously triggered flash floods, like the 2021 Chamoli disaster.

    What lessons can be learned from other hazardous environments? 

    • Enhanced Shelter Design for Safety: Use reinforced, insulated shelters designed to withstand extreme weather and heavy snow loads, similar to Antarctic research stations. Example: Antarctic research bases like the Amundsen-Scott Station use elevated, modular designs to prevent snow burial and provide long-term safety.
    • Advanced Early Warning Systems: Implement real-time monitoring using satellite imaging, drones, and weather forecasting to detect potential avalanches and other hazards. Example: Switzerland’s avalanche warning system uses advanced sensors and weather models to alert communities and workers in mountainous areas.
    • Comprehensive Safety Protocols and Training: Provide specialized safety training, emergency drills, and evacuation plans to workers in high-risk zones. Example: Oil platforms in the Arctic conduct regular safety drills and have rapid-response systems for extreme weather emergencies.

    How could better infrastructure and safety measures reduce the risks faced by workers in high-altitude, disaster-prone areas? (Way forward)

    • Improved Worker Shelters and Living Conditions: Construct insulated, avalanche-resistant shelters with emergency exits and heating systems to protect workers from harsh weather. Example: The Siachen Glacier military base uses reinforced prefabricated shelters designed to withstand extreme snow and sub-zero temperatures.
    • Deployment of Real-Time Monitoring and Early Warning Systems: Use geospatial technology, drones, and automated weather stations to track snow accumulation and predict avalanches. Example: Japan’s snow monitoring system uses remote sensors to provide early warnings, reducing avalanche risks in mountainous areas.
    • Enhanced Emergency Response Infrastructure: Establish permanent rescue facilities with specialized equipment (e.g., thermal detectors and rapid evacuation routes) for quicker disaster response. Example: The Alps region in Europe maintains well-equipped avalanche rescue stations, ensuring faster response times and reducing casualties.

    Mains PYQ:

    Q Differentiate the causes of landslides in the Himalayan region and Western Ghats. (UPSC IAS/2021)

  • Delhi Earthquake

    Why in the News?

    A magnitude 4 earthquake struck New Delhi with epicentre near Dhaula Kuan. The quake was shallow (5 km depth), highlighting Delhi’s seismic vulnerability due to its location in Zone IV of India’s earthquake hazard map.

    Possible Causes of the Earthquake

    • Tectonic Activity along the Delhi-Hardwar Ridge:
      • Delhi sits on the Delhi-Hardwar Ridge, an active seismic fault.
      • Continuous collision of the Indian and Eurasian plates builds tectonic stress, leading to earthquakes when stress is released.
    • Groundwater Extraction as a Seismic Trigger: Excessive exploitation alters rock pressure, potentially inducing fault movements.
    • Anthropogenic (Human-Induced) Activity:
      • Urbanization, metro construction, and large-scale infrastructure projects alter subsurface stress.
      • Vibrations from construction activities can contribute to localized seismic instability.

    About the Aravalli-Delhi Fold Belt

    • The Aravalli-Delhi Fold Belt is a major geological formation that extends from southern Rajasthan to Haryana and Delhi.
      • It consists of ancient folded rock formations that have undergone millions of years of geological transformation.
    • This region has several pre-existing faults, meaning seismic activity can occur without direct tectonic subduction.
    • Although historically more active, tectonic movements in the belt have slowed over time.
    • These earthquakes occur due to fault reactivation and local stress accumulation rather than large-scale tectonic shifts.
      • Himalayan earthquakes are caused by subduction, where the Indian plate moves under the Eurasian plate.

    PYQ:

    [2021] Discuss about the vulnerability of India to earthquake related hazards. Give examples including the salient features of major disasters caused by earthquakes in different parts of India during the last three decades.

    [2015] The frequency of earthquakes appears to have increased in the Indian subcontinent. However, India’s preparedness for mitigating their impact has significant gaps. Discuss various aspects.

     

  • [13th February 2025] The Hindu Op-ed: Nuclear energy — dangerous concessions on liability

    PYQ Relevance:

    Q) Give an account of the growth and development of nuclear science and technology in India. What is the advantage of a fast breeder reactor programme in India? (UPSC CSE 2017)

     

    Mentor’s Comment: UPSC mains have always focused on nuclear science and technology (2017), and atomic energy (2013).

    In the Union Budget speech on February 1, Finance Minister Nirmala Sitharaman announced plans to amend the Atomic Energy Act and the Civil Liability for Nuclear Damage (CLND) Act. This move is likely to be welcomed by the U.S., where past governments have opposed India’s law because it holds nuclear manufacturers partly responsible for accidents. However, in India, removing supplier liability could be a major concern, as it might weaken nuclear safety measures.

     

    Today’s editorial talks about the Atomic Energy Act and the Civil Liability for Nuclear Damage (CLND) Act. This content will help in GS papers 2 and 3 in mains answer writing.

    _

    Let’s learn!

    Why in the News?

    The mention of plans to amend the Civil Liability for Nuclear Damage Act in the Union Budget is a serious issue that needs attention.

    What is the Atomic Energy Act?

    • The Atomic Energy Act, 1962 is an Indian law that regulates the development, production, and use of nuclear energy for peaceful purposes while ensuring national security. It gives the government exclusive control over nuclear materials, plants, and research and allows the establishment of nuclear power projects. The Act also covers radiation safety, uranium mining, reactor operations, and waste disposal to prevent misuse and ensure public safety.

    What is the Civil Liability for Nuclear Damage Act? 

    • The Civil Liability for Nuclear Damage (CLND) Act, 2010 is an Indian law that defines liability in case of a nuclear accident. It ensures compensation for victims while holding nuclear plant operators accountable.

    Key Features:

    • Operator Liability: The primary financial responsibility for any nuclear accident rests with the plant operator (NPCIL in India), not the supplier.
    • Right of Recourse: Unlike many other countries, India allows operators to seek compensation from suppliers if defective equipment or services cause an accident (Section 17).
    • Liability Cap: Operator liability is capped at ₹1,500 crore (~$180 million), with the government covering additional costs if needed.
    • Exclusion from Global Regimes: India has not joined international nuclear liability agreements like the Convention on Supplementary Compensation (CSC), meaning financial responsibility remains domestic.

    What are the safety and liability concerns related to nuclear energy?

    • Risk of Catastrophic Accidents: Nuclear plant failures can lead to massive radiation leaks, environmental destruction, and long-term health impacts.Example: The Fukushima Daiichi disaster (2011, Japan) resulted from a tsunami, causing multiple reactor meltdowns and widespread radioactive contamination.
    • Design Flaws and Negligence: Suppliers may overlook or downplay safety risks in reactor designs, leading to vulnerabilities. Example: The Three Mile Island accident (1979, USA) occurred due to a known reactor design flaw that the supplier failed to address.
    • Limited Liability for Suppliers: In many countries, nuclear suppliers are indemnified, placing financial liability entirely on plant operators and governments.Example: General Electric (GE), which designed the Fukushima reactors, faced no financial consequences due to Japan’s liability laws.
    • Insufficient Compensation for Victims: Liability caps limit compensation for victims, despite the high costs of nuclear disasters. Example: India’s Civil Liability for Nuclear Damage (CLND) Act caps liability at ₹1,500 crore, whereas Fukushima’s cleanup costs are estimated at ₹20-46 lakh crore.
    • Radioactive Waste and Long-Term Risks: Safe disposal of nuclear waste remains a major challenge, with risks of leaks and contamination lasting thousands of years.Example: The Chernobyl disaster (1986, USSR) left a radioactive exclusion zone that remains uninhabitable nearly 40 years later.

    How does India’s approach to nuclear liability differ from global standards?

    • Operator Liability with Limited Supplier Responsibility: India’s Civil Liability for Nuclear Damage (CLND) Act, 2010, places primary liability on the operator (NPCIL), but allows it to seek compensation from suppliers in case of defective equipment or services (Right of Recourse, Section 17).
      • Global Standard: Most countries fully indemnify suppliers, meaning they bear no financial responsibility after supplying reactors.
      • Example: In Japan, General Electric (GE) faced no liability for the Fukushima disaster (2011), while in India, foreign suppliers fear financial risks if an accident occurs.
    • Liability Cap vs. Unlimited Liability in Some Countries: India caps operator liability at ₹1,500 crore (~$180 million), with additional compensation coming from the government if needed.
      • Global Standard: Some countries, like Germany, impose unlimited liability on operators to ensure full compensation. The U.S. Price-Anderson Act establishes a large industry-backed fund for damages beyond a certain limit.
      • Example: After the Chernobyl disaster (1986, USSR), the Soviet government bore the entire cost (~$235 billion), whereas an Indian accident beyond ₹1,500 crore would shift the financial burden to taxpayers.
    • India is Not Part of Global Nuclear Liability Regimes: India has not signed the Convention on Supplementary Compensation for Nuclear Damage (CSC), which standardizes liability norms and creates an international compensation pool.
      • Global Standard: Most nuclear-powered nations, including the U.S. and Japan, are CSC members, ensuring global financial support for nuclear accidents.
      • Example: If a nuclear accident occurs in France, CSC members contribute to compensation, but in India, all financial burdens remain domestic.

    What are the reasons behind the government’s plan to amend the Atomic Energy Act and the Civil Liability for Nuclear Damage (CLND) Act?

    • Attracting Foreign Investment and Suppliers – The existing CLND Act allows India’s nuclear operator (NPCIL) to seek compensation from foreign suppliers in case of faulty equipment, discouraging companies from supplying reactors. Amendments could limit supplier liability, making India a more attractive market for nuclear investments from countries like the U.S., France, and Russia.
    • Expanding Nuclear Energy Capacity – India aims to increase its nuclear power generation to meet rising energy demands and climate goals. Simplifying liability laws could accelerate agreements with international partners and facilitate the construction of new nuclear plants under deals such as the India-U.S. Civil Nuclear Agreement.

    What are the other implications of increasing nuclear energy reliance?

    • High Economic Costs and Project Delays: Nuclear power plants require massive upfront investments, long construction periods, and frequent cost overruns.
      • Example: The AP1000 reactors in Georgia, USA, were initially estimated at $14 billion but were completed at $36.8 billion—a 250% cost overrun. Similarly, India’s Kudankulam Nuclear Power Plant faced significant delays and cost escalations.
    • Nuclear Waste Management and Environmental Risks: Nuclear energy produces radioactive waste that remains hazardous for thousands of years, requiring secure disposal and long-term monitoring.
      • Example: The Fukushima disaster (2011) led to the release of radioactive material, contaminating land and water, with cleanup costs estimated between ¥35-80 trillion (~₹20-46 lakh crore). India lacks permanent storage facilities for high-level nuclear waste.
    • Geopolitical and Security Concerns: Expanding nuclear energy means higher dependence on foreign suppliers, leading to strategic vulnerabilities and potential external influence.
      • Example: India’s civil nuclear deal with the U.S. (2008) opened doors for technology transfer, but suppliers now demand liability protection before delivering reactors, creating diplomatic pressure.

    Way forward:

    • Strengthen Liability and Safety Frameworks: The government should Amend the Civil Liability for Nuclear Damage (CLND) Act to ensure fair risk-sharing between operators and suppliers.
      • Need to invest in advanced reactor safety technologies (e.g., Small Modular Reactors – SMRs) and strengthen independent regulatory oversight.
    • Develop Robust Waste Management and Indigenous Capabilities: The government should establish permanent disposal sites for high-level nuclear waste with stringent monitoring.
      • Need to enhance domestic nuclear technology (e.g., Thorium-based reactors) to reduce reliance on foreign suppliers and improve energy security.