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Geophysical Phenomena
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"Tropical eyelones origlnatic on the oceanic parts and as soon as they reach the terrestrial parts, these storms grudually weakenand end. Explain with reasons. (125 Words) [UPPSC 2019]
1. Loss of Heat Source: Tropical cyclones derive their energy from warm ocean waters. When they move over land, they lose this primary energy source. Evaporation from the ocean, which fuels the cyclone, ceases, leading to a decrease in storm intensity. 2. Increased Friction: On land, cyclones encounRead more
1. Loss of Heat Source: Tropical cyclones derive their energy from warm ocean waters. When they move over land, they lose this primary energy source. Evaporation from the ocean, which fuels the cyclone, ceases, leading to a decrease in storm intensity.
2. Increased Friction: On land, cyclones encounter surface friction from mountains, forests, and buildings. This friction disrupts the cyclone’s circulation and reduces its wind speeds, causing the storm to weaken.
3. Reduced Moisture Supply: Cyclones require high humidity to maintain their structure. Over land, the moisture supply is limited compared to the ocean. As a result, the storm’s convective activity diminishes, leading to weakening.
4. Terrain Disruption: Landforms like mountains can disrupt the storm’s structure by breaking up the wind patterns and rainfall distribution, further contributing to the cyclone’s dissipation.
Recent Example: Cyclone Amphan (2020) weakened as it moved inland after making landfall in West Bengal, illustrating the typical weakening process of tropical cyclones over terrestrial areas.
Conclusion: Tropical cyclones weaken upon reaching land due to the loss of their heat and moisture source, increased friction, and terrain disruptions. These factors contribute to the gradual dissipation of the storm’s intensity.
See lessDiscuss the causes of volcanic eruption and describe the land-forms formed by deposition of its lava. (200 Words) [UPPSC 2020]
Causes of Volcanic Eruption and Landforms Formed by Lava Deposition Causes of Volcanic Eruption Tectonic Plate Movements: The most common cause of volcanic eruptions is the movement of tectonic plates. Volcanic activity often occurs at plate boundaries—either convergent (where plates collide) or divRead more
Causes of Volcanic Eruption and Landforms Formed by Lava Deposition
Causes of Volcanic Eruption
Landforms Created by Lava Deposition
Recent Examples
In summary, volcanic eruptions are caused by tectonic movements, magma pressure, and gas accumulation, and they create a variety of landforms, including shield volcanoes, composite volcanoes, lava plateaus, and cinder cones, each contributing uniquely to the Earth’s topography.
See lessWhat is cyclone? Explain the causes of the origin of temperate cyclones. (200 Words) [UPPSC 2021]
Cyclone: Definition and Causes A cyclone is a large-scale air mass that rotates around a strong center of low atmospheric pressure. It is characterized by strong winds, heavy rain, and storm surges. Cyclones can be classified into various types based on their location and formation characteristics,Read more
Cyclone: Definition and Causes
A cyclone is a large-scale air mass that rotates around a strong center of low atmospheric pressure. It is characterized by strong winds, heavy rain, and storm surges. Cyclones can be classified into various types based on their location and formation characteristics, including tropical cyclones, extratropical cyclones, and temperate cyclones.
Causes of the Origin of Temperate Cyclones
Temperate cyclones, also known as mid-latitude cyclones, occur in the mid-latitudes between 30° and 60° latitude. Their formation is influenced by several factors:
Conclusion: Temperate cyclones originate due to the interaction of temperature contrasts, the influence of jet streams, the Coriolis effect, frontogenesis, and upper-level atmospheric disturbances. These factors combine to create dynamic and powerful weather systems in mid-latitude regions.
See lessDescribe the causes of origin, structure and weather associated with tropical cyclones. (200 Words) [UPPSC 2022]
Causes of Origin, Structure, and Weather Associated with Tropical Cyclones Causes of Origin: Tropical cyclones are formed when a combination of atmospheric and oceanic conditions come together over warm tropical waters. The primary factors that lead to the formation of a tropical cyclone are: Warm oRead more
Causes of Origin, Structure, and Weather Associated with Tropical Cyclones
Causes of Origin:
Tropical cyclones are formed when a combination of atmospheric and oceanic conditions come together over warm tropical waters. The primary factors that lead to the formation of a tropical cyclone are:
Structure:
A tropical cyclone is characterized by:
Weather Associated with Tropical Cyclones:
Tropical cyclones bring severe weather conditions, including:
- Strong winds: Sustained winds can reach up to 250 km/h (155 mph) and cause extensive damage.
- Heavy rainfall: Heavy precipitation can lead to flooding, landslides, and storm surges.
- Storm surge: A rise in sea level due to the storm’s winds, which can cause coastal flooding and damage.
See lessWrite a short note on temperate cyclones. How it impacts India ? (200 Words) [UPPSC 2023]
**Temperate Cyclones** Temperate cyclones, also known as extratropical cyclones, are large-scale weather systems that form in temperate regions, typically between 30° and 60° latitude. They are characterized by a well-defined low-pressure center and are associated with fronts—cold and warm air masseRead more
**Temperate Cyclones**
Temperate cyclones, also known as extratropical cyclones, are large-scale weather systems that form in temperate regions, typically between 30° and 60° latitude. They are characterized by a well-defined low-pressure center and are associated with fronts—cold and warm air masses that interact. These cyclones generally move from west to east due to the prevailing westerly winds and can bring significant weather changes, including heavy rainfall, strong winds, and varying temperatures.
**Impact on India**
In India, temperate cyclones primarily affect the northwestern and northeastern regions, especially during the winter months. They can lead to enhanced rainfall in areas like Punjab, Haryana, and western Uttar Pradesh, contributing to the winter crop season. However, they can also cause adverse weather conditions, such as cold waves and dense fog, which impact agricultural productivity and transportation.
Additionally, these cyclones can influence the Indian monsoon by altering wind patterns, thereby affecting precipitation distribution. The interaction between temperate cyclones and the Indian subcontinent is crucial for understanding seasonal climate variations, and monitoring these systems is essential for effective disaster management and agricultural planning.
See lessDiscuss the major environmental and socio-economic challenges faced by the state of Kerala. How has the state government addressed these challenges through its policies and initiatives? Include an analysis of the effectiveness of these measures.
Kerala faces significant environmental and socio-economic challenges. The state’s hilly areas, like wayanad, are highly susceptible to landslides, especially during the monsoon season. The recent landslide in wayanad, one of the deadliest, caused major loss of life and injuries. Coastal areas are alRead more
Kerala faces significant environmental and socio-economic challenges. The state’s hilly areas, like wayanad, are highly susceptible to landslides, especially during the monsoon season. The recent landslide in wayanad, one of the deadliest, caused major loss of life and injuries. Coastal areas are also at risk due to rising sea levels and erosion. Kerala faces some tough socio-economic problems, including low human development indicators and a high population density. It’s challenging to balance development with protecting the environment. The state government has taken steps to address these issues. For example, the state action plan on climate change is meant to tackle climate problems, but it needs to be properly put into action to work effectively. The state also responds to calamities with effective rescue and relief activities, and expenditures in health and education have resulted in increased general well-being. However, issues remain. Despite warnings, some people continue to live in high-risk locations, demonstrating gaps in risk communication. Properly executing climate action strategies is critical to long-term success. The latest landslide emphasizes the critical necessity for preemptive actions to protect lives and mitigate environmental threats.
See lessWhat are the most promising advancements in earthquake prediction and early warning systems to mitigate disaster risks?
The most promising advancements in earthquake prediction and early warning systems include: Seismic Monitoring Networks: Enhanced networks with dense arrays of sensors improve real-time data collection and analysis for faster detection. Machine Learning and AI: Algorithms analyze seismic data to ideRead more
The most promising advancements in earthquake prediction and early warning systems include:
These advancements improve earthquake prediction, early warnings, and risk mitigation, ultimately saving lives and reducing economic losses.
See lessClimate change effects
Addressing climate change is difficult due to limited resources and a growing population. However, a combination of strategies can help mitigate the impact and adapt to changing conditions. Here are some key approaches: 1. Mitigation Strategies Transitioning to Renewable Energy: Shifting from fossilRead more
Addressing climate change is difficult due to limited resources and a growing population. However, a combination of strategies can help mitigate the impact and adapt to changing conditions. Here are some key approaches:
1. Mitigation Strategies
Transitioning to Renewable Energy: Shifting from fossil fuels to renewable energy sources like solar, wind, and hydroelectric power.
Improving Energy Efficiency: Enhancing energy efficiency in buildings, transportation, and industry to reduce overall energy consumption.
Reforestation and Afforestation: Planting trees and restoring forests to absorb CO2 from the atmosphere.
2. Adaptation Measures
Adaptation involves making adjustments to social, economic, and environmental practices to reduce vulnerability to the impacts of climate change.
Sustainable Agriculture: Adopting practices that improve soil health, conserve water, and enhance crop resilience to climate variations.
Water Management: Developing systems to manage water resources efficiently, including the use of desalination, water recycling, and conservation measures.
Community Preparedness: Educating and preparing communities to respond to climate-related emergencies.
3. Population and Resource Management
See lessAddressing population growth and resource consumption involves promoting sustainable development, improving education and healthcare, and encouraging responsible consumption patterns.
Why people drop listening to music post break-up?
3.Why India being the same country has so much diversity in type of worships, idols and temple structure from north to south?
3.Why India being the same country has so much diversity in type of worships, idols and temple structure from north to south?
See lessUrban Resilience in the Face of Climate Extremes:
A city resilient to extreme climate events should integrate innovative technologies and urban planning strategies for safety and functionality. 1. Flood Management: Incorporate green infrastructure like permeable pavements, rain gardens, and wetlands to absorb and manage stormwater. Construct elevatRead more
A city resilient to extreme climate events should integrate innovative technologies and urban planning strategies for safety and functionality.
1. Flood Management: Incorporate green infrastructure like permeable pavements, rain gardens, and wetlands to absorb and manage stormwater. Construct elevated buildings and use flood barriers and sea walls in flood-prone areas. Implement a smart drainage system with sensors for real-time monitoring and response.
2. Heatwaves: Design buildings with reflective, heat-resistant materials and green roofs to reduce heat absorption. Integrate urban parks, trees, and shaded walkways to lower temperatures. Employ cool roofs and pavements to reflect sunlight and decrease urban heat islands.
3. Storm Protection: Develop robust building codes for high-wind and hurricane-resistant structures. Use stormwater management systems to handle heavy rains, and ensure backup power systems and communication networks are in place. Create designated safe zones and evacuation routes.
4. Renewable Energy: Implement solar panels, wind turbines, and energy storage solutions to ensure energy resilience.
5. Smart Technologies: Utilize IoT for real-time data on weather patterns and emergency response systems to enhance adaptability and coordination.
These measures collectively enhance the city’s ability to withstand and recover from extreme climate events.
See less