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Subject: Geography

  • Landslides in Wayanad

    Why in the News?

    Many people have died, and hundreds are feared trapped after three landslides hit Kerala’s Wayanad district.

    About Wayanad

    • Wayanad is the only plateau in Kerala, forming a continuation of the Mysore Plateau, part of the Deccan Plateau.
    • The Kabini River, a tributary of the Kaveri River, originates in Wayanad.
    • The Chaliyar River, the fourth longest river in Kerala, also originates on the Wayanad plateau.
    • Wayanad is home to the Wayanad Wildlife Sanctuary.

    Susceptibility to Landslides:

    • The region predominantly has laterite soil, which is highly prone to erosion.
    • The steep and undulating terrain of Wayanad makes it naturally susceptible to landslides.
    • Wayanad receives intense and prolonged monsoon rains that cause water infiltration, leading to soil saturation and increased pore water pressure, which destabilizes slopes.
    • Large-scale deforestation for agriculture and settlement reduces the binding capacity of the soil and its ability to absorb water, exacerbating the risk of landslides.

    What are Landslides?

    • A landslide is the downward and outward movement of materials including rock, earth, or debris down a slope due to gravitational force. Landslides are disasters of hydrogeological origin, resulting from the failure of materials falling down a slope due to gravity.
    • India is among the top five landslide-prone countries globally, with at least one death per 100 sq km reported annually due to landslides.

    Regional Distribution

    • North-western Himalayas: 66.5% of landslides.
    • North-eastern Himalayas: 18.8% of landslides.
    • Western Ghats: 14.7% of landslides.

    Key Policy Initiative: National Landslide Susceptibility Map

    • The National Remote Sensing Centre (NRSC) under ISRO released the Landslide Atlas of India in 2023.
    • This detailed guide identifies landslide hotspots across the country with a 100 sq. m resolution overview of landslide susceptibility.
    • The map highlights traditional high-risk areas and uncovers new regions of concern, broadening the scope of landslide monitoring.
    • Scientists conducted a risk assessment based on 80,000 landslides recorded between 1998 and 2022 across 147 districts in 17 states and two Union Territories, creating a “Landslide Atlas” of the country.

    Key Highlights of the Landslide Atlas:

    Top States by Landslide Events:

    • Mizoram: 12,385 events in the past 25 years.
    • Uttarakhand: 11,219 events.
    • Other states: Kerala, Jammu and Kashmir, Nagaland, Arunachal Pradesh, and Tripura.

    Districts with Maximum Landslide Exposure:

    • Arunachal Pradesh: 16 districts.
    • Kerala: 14 districts.
    • Uttarakhand and Jammu and Kashmir: 13 districts each.
    • Himachal Pradesh, Assam, and Maharashtra: 11 districts each.
    • Mizoram: 8 districts.
    • Nagaland: 7 districts.

    Highest Landslide Density and Risk Exposure:

    • Rudraprayag and Tehri Garhwal districts in Uttarakhand.

    PYQ:

    [2021] Describe the various causes and the effects of landslides. Mention the important components of the National Landslide Risk Management Strategy.

  • Typhoon Gaemi 

    Why in the News?

    After making landfall in the Philippines, Typhoon Gaemi is heading towards Taiwan.

    What is a Typhoon?

    • A typhoon is a mature tropical cyclone that forms in the Northwest Pacific Ocean, primarily between 100°E and 180°E.
    • It is characterised by strong winds, and heavy rain, and can cause significant damage due to high wind speeds, storm surges, and flooding.

    Factors causing its formation:

    • It needs sustained ocean temperatures of 26.5°C or higher.
    • High moisture content in the mid-troposphere.
    • Presence of the Coriolis force to initiate rotation.
    • Minimal vertical wind shear to allow for storm growth.
    • Atmospheric instability to promote rising motion and thunderstorm activity.
    • An initial low-pressure area or tropical wave to trigger development.
      • Formation Regions: Northwest Pacific Ocean in areas east of the Philippines, southeast of Japan, and near Taiwan; South China Sea and in Western North Pacific near the Mariana Islands and Guam.
    Note: Typhoons do not form in the South Atlantic Ocean and the southeastern Pacific Ocean because of cooler sea surface temperatures and higher wind shear in those regions.

     

    PYQ:

    [2015] In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?

    (a) Sea surface temperatures are low
    (b) Inter-Tropical Convergence Zone seldom occurs
    (c) Coriolis force is too weak
    (d) Absence of land in those regions

  • The promise of parametric insurance

    Why in the news? 

    In 2023, natural disaster losses hit $280 billion, with only $100 billion insured, highlighting a need for innovative insurance solutions amid rising extreme weather events.

    Present Method of Disaster Risk Reduction

    • Indemnity-based Insurance Products: Indemnity-based insurance products require a physical assessment of damage after a disaster to determine the payout amount. For example Health Insurance, Motor Insurance and Travel Insurance.

    Challenges:

    • Verification Issues: When large-scale calamities strike, especially in economically disadvantaged areas, it is difficult to verify losses due to the lack of records and widespread destruction.
    • Delays in Payouts: The need for physical assessment can cause delays in providing financial assistance to the affected individuals and communities.
    • Insurance Gap: There is a significant gap in insurance coverage between developed and developing economies, leaving many vulnerable populations without adequate protection.

    Changing course and the associated limitations:

    • Parametric insurance: Payments are made based on predefined parameters of weather events (e.g., rainfall exceeding 100 mm per day for two consecutive days, specific flood levels, wind speed).The payouts are made without the need for physical assessment of losses, enabling quicker disbursements.

    Examples:

    • Disaster-prone Island Countries: Many have adopted parametric insurance for climate adaptation, moving away from risk retention models. For example, Fiji launched its first parametric insurance product in 2021
    • Morocco received $275 million in parametric insurance after a 6.8 magnitude earthquake, arranged with the help of the World Bank.
    • India has initiated crop insurance (e.g., Pradhan Mantri Fasal Bima Yojana and the Restructured Weather Based Crop Insurance Scheme).

    Associated Limitations

    • Current Focus: Primarily used for low-frequency, high-impact disasters like earthquakes, cyclones, and hurricanes.
    • Data and Infrastructure Requirements: There is challenges related to developing and maintaining the necessary infrastructure for data collection and monitoring can be challenging, especially in developing regions.
    • Affordability and Accessibility issues: It demands high premiums can still be a barrier for economically disadvantaged communities.

    Case Study of Nagaland:

    • Nagaland was the first state in India to buy parametric cover for extreme precipitation in 2021.
    • Based on lessons learned, it improved the product by fixing an absolute annual premium, duration, and rate online, allowing bidders to compete over lower threshold limits and maximized payouts.

    What can be done to ensure effectiveness? (Way Forward)

    • Precise Thresholds and Robust Monitoring: Establish clear, accurate parameters for insurance triggers and implement reliable monitoring systems to track these parameters effectively.
    • Transparent Bidding and Experience Sharing: Follow a transparent bidding process for price discovery and facilitate the exchange of best practices and lessons learned between governments.
    • Widespread Payout Systems and Household Premium Support: Develop comprehensive systems for distributing payouts and promote long-term premium payment by households, leveraging tools like Aadhaar-based payment dissemination.

    Mains PYQ: 

    Q Describe various measures taken in India for Disaster Risk Reduction (DRR) before and after signing ‘Sendai Framework for DRR (2015-2030)’. How is this framework different from ‘Hyogo Framework for Action, 2005’? (UPSC IAS/2018)

  • Last Universal Common Ancestor (LUCA)

    Why in the News?

    • The origin of life on Earth remains one of the world’s most enduring mysteries.
      • Numerous competing theories exist, but none have conclusive proof.
      • A significant concept in understanding the origin of life is the Last Universal Common Ancestor (LUCA).

    What is the Last Universal Common Ancestor (LUCA)?

    • Researchers believe that all life forms— the Bacteria, the Archaea, and the Eukarya —originated from a single cell known as the last universal common ancestor (LUCA).
    • It is suggested to have been a “cellular organism that had a lipid bilayer and used DNA, RNA, and protein“.
    • There is a lack of clarity about direct fossil evidence of LUCA.
    • However, the shared features of modern genomes provide significant insights into this ancient ancestor.

    LUCA and the Molecular Clock:  

    • The molecular clock theory was proposed by molecular biologist Emile Zuckerkandl and biochemist Linus Pauling in the 1960s and later refined by biologist Motoo Kimura.
    • The theory allows scientists to reconstruct the evolutionary timeline.
    • According to the theory, the rate at which mutations are added or removed from a population’s genome is proportional to the rate of acquiring new mutations, which is constant.
    • By calibrating the molecular clock with known events, such as the emergence of the first mammals or the age of certain fossils, researchers can estimate the time between evolutionary events.

    Recent Research Findings on LUCA’s Age and Genome

    • Researchers at the University of Bristol and Exeter estimate that LUCA originated around 4.2 billion years ago, nearly 1 billion years earlier than previously thought. 
      • They obtained evidence from the 3.3 km deep Candelabra’ hydrothermal vent on the Mid-Atlantic Ridge.
    • LUCA had a small genome of about 2.5 million bases encoding 2,600 proteins, sufficient for survival in a unique niche.
    • Its metabolites may have created a secondary ecosystem for other microbes.
    • The presence of immunity genes in LUCA suggests it had to defend against viruses.

    Evidence Verification using Miller-Urey Experiment

    • In 1952, Stanley Miller and Harold Urey conducted an experiment at the University of Chicago, simulating lightning strikes on a mixture of methane, ammonia, and water, which resulted in the formation of amino acids.
    • This demonstrated that complex organic compounds could arise from inorganic compounds under the right conditions.

    Which is older: LUCA or fossils?

    • LUCA’s estimated origin at 4.2 billion years predates the earliest fossil records by almost 1 billion years.
    • Fossil records from the Pilbara Craton in Australia suggest life emerged around 3.4 billion years ago, but the study pushes this date back.

    Alternative Theories: 

    (1) Extraterrestrial Origin

    • Another prominent theory suggests that meteorites from space could have brought the building blocks of life to Earth.
    • This theory is supported by various discoveries.
    • In August 2019, French and Italian scientists reported finding 3.3 billion-year-old extraterrestrial organic material.
    • Japan’s Hayabusa 2 mission to the asteroid Ryugu detected more than 20 amino acids, further supporting the possibility of an extraterrestrial origin for the building blocks of life.

    (2) Oparin-Haldane Hypothesis

    • In the 1920s, Alexander Oparin and J.B.S. Haldane independently proposed theories regarding the origin of life.
    • They suggested that life originated from a “primordial soup” in a prebiotic environment on the young Earth.
    • This concept is now known as the Oparin-Haldane hypothesis.

     

    PYQ:

    [2012] Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

    (a) Hydrogen, Oxygen, Sodium

    (b) Carbon, Hydrogen, Nitrogen

    (c) Oxygen, Calcium, Phosphorus

    (d) Carbon, Hydrogen, Potassium

  • [8th July 2024] The Hindu Op-ed: A law around low-carbon climate-resilient development

     

    PYQ Relevance:

    Mains: 

    Q) Climate change’ is a global problem. How India will be affected by climate change? How Himalayan and coastal states of India will be affected by climate change? (UPSC CSE 2017) 

    Q) ‘Clean energy is the order of the day.’ Describe briefly India’s changing policy towards climate change in various international fora in the context of geopolitics. (UPSC CSE 2022) 

    Note4Students: 

    Prelims: Supreme court judgements related to climate change impact,

    Mains:  Role of state and local Government to address the impact of climate change, 

    Mentor comment: Climate change poses grave threats to human rights, including the rights to life, health, food, water, housing, and an adequate standard of living. Extreme weather events, sea-level rise, and environmental degradation disproportionately impact vulnerable populations. Governments have a legal obligation to curb climate change, and corporations must respect human rights by reducing emissions and adapting to climate impacts. Addressing climate change is crucial to upholding human rights and ensuring a sustainable future for all.

    Let’s learn!

    __ __

    Why in the news? 

    In a landmark judgment, the Supreme Court of India recently recognized a right to be “free from the adverse impacts of climate change” in “M.K. Ranjitsinh and Others vs Union of India”, deriving it from the right to life and the right to equality.

    Law to inform development choices 

    • Integrating Climate Objectives into Development: Ensure that low-carbon and climate-resilient futures are prioritized in routine decision-making at all levels of development. Embed climate objectives in the legal framework to guide sustainable development choices.
    • Grounding Climate Action in Social Justice: Design laws to protect vulnerable populations disproportionately affected by climate change. Ensure the energy transition is just and equitable, advancing social justice and inclusive development.
    • Adopting a Comprehensive and Flexible Approach: Move beyond top-down emission targets to address broader developmental choices and their long-term impacts. Establish well-defined legal procedures that promote continuous consideration of low-carbon and climate-resilient futures.
    • Building a Robust Institutional Framework: Create an institutional structure to strategize, prioritize, troubleshoot, and evaluate climate policies. Enhance governance capacity to ensure credible and accountable climate action across all levels of government.
    • Tailoring Framework Climate Laws to the Indian Context: Adapt elements of global framework climate laws to suit India’s specific needs, focusing on maximising development per unit of carbon emitted. Emphasize climate resilience and social equity, ensuring development progresses in a low-carbon direction while building resilience to pervasive climate impacts.

     Need for a Low-Carbon Development Body

    • Rigorous Policy Analysis and Knowledge Generation: Establish a knowledge body in government to rigorously analyze policy options and their potential futures. Enable informed decision-making through a comprehensive understanding of low-carbon development and resilience strategies.
    • Expertise and Technical Guidance: Create an independent ‘low-carbon development commission’ staffed with experts and technical personnel. Provide national and state governments with practical guidance on achieving low-carbon growth and resilience.
    • Deliberative Decision-Making and Stakeholder Consultation: Facilitate a platform for deliberative decision-making involving multiple stakeholders. Systematically consult vulnerable communities and those adversely affected by technological changes to ensure their concerns are heard and integrated, leading to more sustainable and inclusive policy outcomes.
    • Strategic Direction and Whole-of-Government Coordination: Form a high-level strategic body, or ‘climate cabinet,’ comprising key Ministers and representation from State Chief Ministers to drive climate strategy across government. Address the challenge of siloed decision-making by promoting a whole-of-government approach with dedicated coordination mechanisms.
    • Enhanced Governance and Legal Empowerment: Complement the role of the Ministry of Environment, Forest, and Climate Change with higher-level coordination bodies. Reinforce existing structures like the Executive Committee on Climate Change with clearly defined legal powers and duties to ensure effective implementation and accountability in climate governance.

    Role of State and Local Governments in Climate Law

    • Engagement with Federal Structure: Recognize the importance of India’s federal structure in climate governance. Acknowledge that crucial areas for emission reduction and resilience improvement, such as electricity, agriculture, water, health, and soil, are managed by State and local governments.
    • First Responders to Climate Impacts: Understand that climate impacts are felt first and most intensely at local levels. Ensure that any institutional structure or regulatory instrument engages meaningfully with subnational governments.
    • Access to National Scientific Capacity: Establish channels for subnational governments to access national scientific resources and expertise. Utilize the low-carbon development commission as an intermediary to enhance local climate scientific capacity.
    • Financing Local Action: Develop mechanisms for financing local climate actions. Align centrally-sponsored schemes with climate goals and require national departments to climate-tag expenditures to enhance local climate resilience.
    • Coordination Mechanisms and Unified Goals: Create coordination mechanisms for the Centre and States to consult on major climate decisions. Require periodic updates of medium-term climate plans from both Centre and States, built around unified climate goals.
    • State-Specific Solutions and Institutions: Enable States to develop complementary institutions to those at the Centre, providing local knowledge, strategy-setting, deliberation, and coordination functions. Foster the development of State-specific solutions that address unique local climate challenges.

    Steps taken by Government to address the impact of climate change: 

    • International Solar Alliance (ISA): Launched in 2015, this alliance aims to efficiently utilize solar energy and reduce dependence on non-renewable sources like fossil fuels.
    • One Sun, One World, One Grid (OSOWOG) project with the UK: This project aims to build and scale inter-regional energy grids to share solar energy globally.
    • Swachh Bharat Mission: This program emphasized cleaning India’s cities and villages by providing toilets for every household.
    • National Clean Air Programme: Launched in 2019 to reduce particulate matter concentrations in the atmosphere.
    • Green Skill Development Programme: Launched to develop green skills and provide employment in the environment and forest sectors.
    • Commitment to get 50% of energy from renewable sources and reduce total projected carbon emissions by 1 billion tonnes by 2030: The government aims to ensure sustainable development of the environment.
    • Faster Adoption and Manufacturing of Hybrid & Electric Vehicles (FAME) India scheme: Launched in 2015 to promote electric vehicles and decrease coal consumption.

    Way forward: 

    • Strengthen Institutional and Legal Frameworks: Establish robust institutions like an independent low-carbon development commission to provide expert guidance, facilitate stakeholder consultations, and ensure informed decision-making.  
    • Promote Inclusive and Equitable Climate Action: Integrate social equity considerations into climate policies by systematically consulting vulnerable communities and those affected by technological changes.  

  • What is Aphelion?

    Why in the News?

    Early on July 5, the Earth reached aphelion, its farthest distance from the sun in our year-long journey around our nearest star.

    What is Aphelion? 

    • Aphelion is a term used in astronomy to denote the point in the orbit of a planet or celestial body where it is farthest from the Sun. 
    • The Earth’s orbit around the Sun is not a perfect circle but rather an ellipse, with the Sun situated at one of the two foci of the ellipse. 
    • Aphelion marks the moment when Earth is at its maximum distance from the Sun along this elliptical path.
    • The concept of aphelion was crucial in Johannes Kepler‘s formulation of his laws of planetary motion during the 17th century.

    How far is the Earth from the Sun at aphelion? 

    • At aphelion, which occurs around July 4th– 5th each year, the Earth is approximately 152.1 million kilometers (about 94.5 million miles) away from the Sun. 
    • This distance is about 3.3% greater than its average distance from the Sun, known as its semi-major axis, which is about 147.1 million kilometers.

    Does aphelion affect temperatures on Earth? 

    • Aphelion has a slight effect on temperatures on Earth, but its impact is minimal compared to other factors such as axial tilt and atmospheric circulation patterns. 
    • Despite being farther from the Sun during aphelion, the Earth’s tilt towards the Sun during the northern hemisphere’s summer results in warmer temperatures for that region. 
    • This phenomenon is primarily responsible for the seasons on Earth.

    What would happen if there were no aphelion? 

    • If Earth’s orbit were perfectly circular, without aphelion or perihelion (the closest point to the Sun), the distance between Earth and the Sun would remain constant throughout the year. 
    • This scenario would result in less variation in seasonal temperatures between the northern and southern hemispheres. 
    • The distinct seasons that we experience today, which are essential for ecological diversity and agricultural cycles, would be significantly altered.

    PYQ:

    [2013] Variations in the length of daytime and night time from season to season are due to-

    (a) The earth’s rotation on its axis

    (b) The earth’s revolution round the sun in an elliptical manner

    (c) Latitudinal position of the place

    (d) Revolution of the earth on a tilted axis

  • Factory accidents, a pointer to rusty inspection reform  

    Why in the news?

    In May 2024, an explosion at a reactor in a chemical factory within the Dombivli Maharashtra Industrial Development Corporation (MIDC) area caused fatalities and injuries among workers and local residents.

    Present Scenario in India       

    • India continues to witness frequent fatal industrial accidents, often due to non-compliance with safety regulations, inadequate inspections, and compromised safety practices.
    • Recent incidents, such as the Dombivli MIDC chemical factory explosion, highlight the recurring nature of these accidents and their devastating impact on lives and infrastructure.
    • There is a significant disparity between the number of registered factories and the inspection rates across states like Maharashtra, Gujarat, and Tamil Nadu.

    Causes of fatal industrial accidents   

    • Non-compliance with Safety Regulations: Many industrial accidents occur due to the failure of companies to adhere to mandated safety regulations and standards. Examples include improper maintenance of machinery, lack of safety equipment, and inadequate training of personnel in handling hazardous materials.
    • Inadequate Maintenance and Inspection Practices: Poor maintenance of industrial equipment and facilities can lead to malfunctions and accidents. Insufficient or irregular inspection practices contribute to undetected hazards and safety violations that increase the risk of accidents.
    • Human Error and Unsafe Practices: Accidents often result from human errors such as negligence, fatigue, or lack of training. Unsafe work practices, including shortcuts taken to save time or reduce costs, can compromise safety standards and escalate the likelihood of accidents.

    Need for the right reforms 

    • Strengthening Regulatory Framework: Reforms should focus on updating and strengthening safety regulations to align with international standards and best practices. There is a need to close loopholes and ambiguities in existing laws to enhance clarity and enforceability.
    • Improving Inspection and Enforcement: Enhancing the capacity and effectiveness of regulatory bodies responsible for inspecting industrial facilities. Increasing the number of qualified inspectors, improving their training, and implementing advanced inspection techniques like digital monitoring and real-time compliance checks.
    • Promoting Transparency and Accountability: Establishing transparent mechanisms for reporting and investigating industrial accidents to identify root causes and prevent recurrence.

    What can be the solution? (Way forward)

    • Enhanced Regulatory Oversight: Strengthening and strictly enforcing safety regulations and standards across all industries. Regular updates to ensure regulations are comprehensive, up-to-date with technological advancements, and aligned with international best practices.
    • Improving Inspection and Compliance: Increasing the number of qualified inspectors and improving their training and capabilities.Implementing regular and surprise inspections using modern technologies such as digital monitoring and remote sensing to ensure compliance with safety standards.
    • Promoting Safety Culture: Encouraging a proactive safety culture within industries through training, awareness programs, and incentives for compliance.

    Mains PYQ: 

    Q What is the significance of Industrial Corridors in India? Identifying industrial corridors, explain their main characteristics. (UPSC IAS/2018)

  • How urban expansion makes Delhi susceptible to flooding? 

    Why in the news?

    Heavy rain brought Delhi and NCR to a standstill, causing severe water-logging, traffic snarls, power cuts, property damage, and 11 deaths from structural collapses and electrocution.

    • Climate change and rising temperatures have intensified the overflow of rivers and lakes, snowmelt, storm surges (such as hurricanes and cyclones), and abnormally heavy rains. This, coupled with locational vulnerabilities, has resulted in increased instances of urban flooding.

    Principal Reasons Behind Chronic Urban Flooding in Delhi

    • Unchecked Urban Expansion: Rapid, ill-planned urban growth without considering natural topography and drainage patterns.
    • Inadequate Drainage Systems: Existing drainage systems are unable to handle high-intensity rainfall, leading to significant runoff.
    • Concrete Overdevelopment: Excessive construction on low-lying areas and flood plains, leaving little room for water absorption.
    • Destruction of Water Bodies: Reduction of water bodies that could manage floodwaters, with many converted into real estate.
    • Neglect of Water in Urban Planning: Lack of a comprehensive water masterplan that integrates water management into urban development.

    Present Scenario of Rapid Urbanization in Delhi NCR

    • Fastest Urban Expansion: Delhi is one of the fastest-growing cities globally, with its geographic size almost doubling between 1991 and 2011.
    • Population Growth: Predicted to overtake Tokyo as the world’s most populous city by 2030, with an estimated population of 39 million.
    • Urban Sprawl: Expansion primarily on the peripheries, converting rural areas into urban zones, and rapid urbanization in NCR cities like Ghaziabad, Faridabad, Noida, and Gurugram.

    Challenges and Limitations

    • Topographical Neglect: Building in low-lying areas and on flood plains, disrupting natural drainage and increasing flood risks.
    • Inadequate Infrastructure: Insufficient desilting of drains, inadequate stormwater management systems, and improper solid waste management.
    • Lack of a Water Masterplan: Absence of comprehensive planning for clean and wastewater flows, leading to issues like the flooding of new infrastructures like the Pragati Maidan Tunnel.
    • Reduction of green space and water bodies: Conversion of green spaces and water bodies into concrete developments, further aggravating flood situations.
    • Inconsistent Urban Planning: No systematic approach to integrating natural water flows and gradients into urban development plans.

    Recommendations (Way Forward)

    • Integrated Urban Planning: Develop a water masterplan that prioritizes water management in urban development.
    • Protection of Water Bodies: Preserve and restore existing water bodies to manage floodwaters effectively.
    • Sustainable Development: Implement policies to prevent construction in low-lying and flood-prone areas.
    • Infrastructure Improvement: Enhance drainage systems, desilting processes, and solid waste management to reduce water logging.
    • Public Awareness: Increase awareness about the importance of sustainable urban planning and the risks of unchecked urbanization.
    Case study: Copenhagen, Denmark has an excellent “Five Finger Plan” that integrates urban infrastructure, transport, and green spaces. The city emphasizes sustainability, public life, and sensitive development. Indian Government can consider this plane.

    Mains PYQ: 

    Q Account for the huge flooding of million cities in India including the smart ones like Hyderabad and Pune. Suggest lasting remedial measures. (UPSC IAS/2020)

  • What are hurricanes, their types?    

    Why in the news?

    Due to Hurricane Beryl sweeping through the Windward Islands, the Indian Men’s cricket team, victorious in the T20 World Cup, finds itself stranded in Barbados.

    What do we know about Hurricane Beryl?

    • Early Category 4 Storm: Hurricane Beryl is the earliest category 4 storm of the Atlantic hurricane season, sustaining winds of at least 130 miles per hour (209 kilometres per hour).
    • Location and Impact: It is currently affecting the Windward Islands in the southern part of the Lesser Antilles, including Barbados, Grenada, and Trinidad and Tobago.
    • Forecast: The National Hurricane Centre has issued warnings for life-threatening winds and storm surges in the affected islands, with the potential for violent winds and flash flooding.
    • Preparations: Local authorities in Barbados have suspended school classes and taken other precautions, such as shutting down the water supply, in anticipation of the hurricane’s impact.
    • Historical Context: Hurricane Beryl is noted as the strongest storm to impact the Windward Islands since Hurricane Ivan in September 2004.

    What are hurricanes and how do they form?

    • Formation: Hurricanes form over warm ocean waters near the equator where warm, moist air rises from the ocean’s surface, creating low air pressure.
    • Fuel: They are fueled by the heat and moisture evaporating from the ocean, forming clouds and spinning due to the Earth’s rotation.
    • Eye Formation: As the storm system intensifies, an eye forms at its centre, with storms rotating counterclockwise north of the equator and clockwise south of it.
    • Impact of Warming World: Warmer sea surface temperatures due to climate change may lead to slower decay of hurricanes upon landfall, potentially increasing their severity.

    Are hurricanes becoming more severe now?

    • Research Findings: Studies suggest that warmer sea surface temperatures contribute to the slower decay of hurricanes, potentially prolonging their destructive impacts inland.
    • Record-Breaking Seasons: The 2020 Atlantic Hurricane season has seen a record number of named storms, indicating a trend towards more frequent and intense hurricane activity.

    What is the difference between a hurricane and a tropical storm?

    • No Fundamental Difference: Hurricanes, typhoons, and cyclones are all types of tropical cyclones, named differently based on their location:
    • Hurricanes: Form over the Atlantic Ocean and the eastern Pacific Ocean.
    • Typhoons: Form in the Northwest Pacific Ocean.
    • Cyclones: Form in the Bay of Bengal and the Arabian Sea.
    • Naming Conventions: The different names signify regional differences but refer to the same meteorological phenomenon of tropical cyclones.

    Way forward: 

    • Implementation of Advanced Forecasting Technologies: Invest in state-of-the-art meteorological tools and satellite technology to enhance the accuracy and lead time of hurricane forecasts.
    • Community Preparedness Programs: Establish comprehensive community outreach programs to educate residents about hurricane risks, evacuation procedures, and emergency shelter locations.

    Mains PYQ:

    Q Discuss the meaning of colour-coded weather warnings for cyclone prone areas given by India Meteorological Department. (UPSC IAS/2014)

  • In news: Shyok River

    Why in the News?

    Five soldiers lost their lives when a tank was drowned away by powerful water currents in the Shyok River during a military training exercise in Ladakh.

    About Shyok River

    • The Shyok River is a significant river flowing through the Ladakh region of India and the Gilgit-Baltistan region of Pakistan.
    • It is a tributary of the Indus River and is known for its length and the rugged terrain it traverses.
    • The Shyok River spans approximately 550 kilometres in length.
    • It has a drainage basin covering parts of both India and Pakistan, making it an essential water source for the regions it traverses.

    Source and Course:

    • The river originates from the Rimo Glacier, located to the southeast of the Karakoram Pass.
    • It flows northwest to enter the Nubra Valley in Ladakh, a region known for its picturesque landscapes and sand dunes.
    • The river then turns southwest and flows through the disputed region of Gilgit-Baltistan, eventually joins the Indus River near Skardu.

    Tributaries:

    • The Shyok River has several tributaries, the most notable being the Nubra River, which flows through the Nubra Valley.
    • Other significant tributaries include the Saltoro River, originating from the Siachen Glacier region.

    Cultural and Historical Significance:

    • The river flows through that have been part of ancient trade routes between Central Asia and South Asia.
    • The Nubra Valley, through which the Shyok flows, is also known for its ancient monasteries and the Bactrian camels, which were used for trade along the Silk Route.

    Geographical significance of Shyok River 

    • Strategic Location: The Shyok River flows through the Ladakh region of India and serves as a vital geographical feature due to its proximity to the Line of Actual Control (LAC) between India and China. Its strategic location influences military deployments and infrastructure development in the region, particularly in the context of border disputes and security concerns.
    • Glacial Melt and Water Resources: Originating from the Rimo Glacier and fed by numerous tributaries, the Shyok River contributes significantly to the water resources of the region. Its flow is crucial for agriculture, hydroelectric power generation, and sustenance of local ecosystems, impacting the livelihoods and socio-economic activities of communities along its banks.

    PYQ:

    [2020] Siachen Glacier is situated to the

    (a) East of Aksai Chin

    (b) East of Leh

    (c) North of Gilgit

    (d) North of Nubra Valley