Natural disaster
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1) A natural disaster is defined as a natural hazard that causes significant financial and human losses through its impact on the environment. Examples include floods, earthquakes, tsunamis, and epidemics. 2) Natural disasters occur when natural hazards intersect with vulnerabilities in human systems. Major causes are seismic activity, soil erosion, and the greenhouse effect. 3) Natural disasters can be categorized as either hydrometeorological, involving atmospheric/hydrological phenomena like floods and storms, or geological, involving earthquakes, tsunamis and landslides.
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Natural Hazards: Earthquake and Volcanic Hazards + Mitigation and Adaptation
Created by: Karl Ruelan; Philippines (c) David G.
Educational Purposes Only
For Science - 11 Presentation; 8/30/16
About Natural Hazards
Specifically: Earthquake and Volcanic Hazards
It also includes: Mitigation and Adaptation to this hazards.
Powerpoint
What is Earthquake?
The minimal to rapid shaking of the ground due to the movement of rocks along fractures known as faults.
Earthquake Hazards
Surface Rupture & Physical Damage
Liquefaction
Fires
Tsunami
Landslide
Volcanic Hazards
Pyroclastic Flows and Materials
People unable to run
Bury people and agriculture
Mudflow or LAHAR
Poisonous gases
Tsunami
Volcanic Eruption
Two Types; based on magma comp.
Explosive Eruption
Non-Explosive Eruption
HAZARD MAPS
One of the government’s response to mitigate and adapt to the hazards.
Developed to indicate the places where most of the natural disasters usually occur and will most likely occur.
by the shaking itself or by the ground beneath them settling to a different level than it was before the earthquake (subsidence) or (uplift).
Subsidence is the motion of a surface (usually, the Earth's surface) as it shifts downward relative to a datum such as sea-level.
A fault is a fracture or zone of fractures between two blocks of rock. Faults allow the blocks to move relative to each other.
Philippines experience a lot of Earthquakes because it is located in the Circum-Pacific Belt, situated in the Pacific Ring of Fire
Pacific Ring of Fire is term used for VOLCANOES only.
Geography / natural Hazards
This document discusses several types of natural hazards including atmospheric, terrestrial, and aquatic hazards. It provides examples of different types of natural hazards such as tropical cyclones, earthquakes, volcanic eruptions, and tsunamis. It explains key concepts about these hazards such as the definitions of hurricanes, typhoons, and tropical cyclones, different types of volcanic eruptions and lava, and how tsunamis differ from ordinary wind waves in having much longer wavelengths and periods. Images and diagrams are included to illustrate volcanic eruptions, tsunamis, and the damage they can cause.
Geological hazard and hazard map
This document provides information on various geological hazards including earthquakes, volcanoes, landslides, and tsunamis. It defines an earthquake as the shaking of the earth's surface from a sudden release of energy in the lithosphere. It describes the focus and epicenter of an earthquake and different types of volcanic eruptions and associated hazards. It also outlines different types of landslides and tsunamis, explaining they are large waves caused by displacement of water.
Geohazards
This document discusses factors that influence slope stability, including gravity, slope angle, water content, and triggering events. Steeper slopes have higher shear stresses from gravity, making failure more likely. Water reduces shear strength by allowing soil grains to separate, and saturation can cause liquefaction. Earthquakes, slope modifications, and erosion undercutting slopes can trigger mass wasting events like landslides by reducing stability.
Earthquake and risk mitigation
This document discusses earthquakes and risk mitigation. It begins with definitions of earthquakes and their causes, which include the movement of tectonic plates and human activities like coal mining and dam building. It then covers the effects of earthquakes and how they are measured. The focus is the location where the rock movement originates and the epicenter is where it reaches the surface. The document outlines strategies for mitigating earthquake risks, including educating the public, building standards, and emergency response plans. It provides guidance on personal safety both before, during, and after an earthquake through practices like having an emergency kit and dropping, covering, and holding on if an earthquake strikes.
Volcano hazards
1. The document discusses various volcano hazards such as lahars, ash fall, pyroclastic flows, ballistic projectiles, volcanic gases, and lava flows.
2. It also covers signs of an impending volcanic eruption, different types of volcanoes, and how to prepare before, during, and after an eruption using appropriate safety measures.
3. The document provides information on interpreting volcano hazard maps and understanding how they can help assess risk from future eruptions.
Environmental Hazards
The document discusses several types of environmental hazards including tropical storms, landslides, volcanic eruptions, earthquakes, and mass movements. Landslides can be hazardous when they occur near human settlements. They are often triggered by heavy rain, which increases pore water pressure and causes unstable slopes to fail. Volcanic eruptions provide hazards from lava, pyroclastic bombs and deadly pyroclastic flows. Hazards extend beyond the immediate eruption and can include tsunamis, landslides and mudflows. Earthquakes and volcanic eruptions are monitored using tools like seismographs and tilt meters to help predict locations and timing of future events, though accuracy remains limited.
Geological Disaster
This document provides information about different natural disasters including earthquakes, landslides, tsunamis, and mine disasters. It defines each disaster, describes how they occur, how they are measured or classified, safety precautions to take during each one, and methods to prevent or mitigate future risks. Key details covered include how seismic waves cause earthquakes, common causes and types of landslides, how tsunamis are generated by earthquakes and volcanic eruptions under water, and important accident causes and prevention recommendations for mine disasters.
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Natural Hazards: Earthquake and Volcanic Hazards + Mitigation and Adaptation
Created by: Karl Ruelan; Philippines (c) David G.
Educational Purposes Only
For Science - 11 Presentation; 8/30/16
About Natural Hazards
Specifically: Earthquake and Volcanic Hazards
It also includes: Mitigation and Adaptation to this hazards.
Powerpoint
What is Earthquake?
The minimal to rapid shaking of the ground due to the movement of rocks along fractures known as faults.
Earthquake Hazards
Surface Rupture & Physical Damage
Liquefaction
Fires
Tsunami
Landslide
Volcanic Hazards
Pyroclastic Flows and Materials
People unable to run
Bury people and agriculture
Mudflow or LAHAR
Poisonous gases
Tsunami
Volcanic Eruption
Two Types; based on magma comp.
Explosive Eruption
Non-Explosive Eruption
HAZARD MAPS
One of the government’s response to mitigate and adapt to the hazards.
Developed to indicate the places where most of the natural disasters usually occur and will most likely occur.
by the shaking itself or by the ground beneath them settling to a different level than it was before the earthquake (subsidence) or (uplift).
Subsidence is the motion of a surface (usually, the Earth's surface) as it shifts downward relative to a datum such as sea-level.
A fault is a fracture or zone of fractures between two blocks of rock. Faults allow the blocks to move relative to each other.
Philippines experience a lot of Earthquakes because it is located in the Circum-Pacific Belt, situated in the Pacific Ring of Fire
Pacific Ring of Fire is term used for VOLCANOES only.
Geography / natural Hazards
This document discusses several types of natural hazards including atmospheric, terrestrial, and aquatic hazards. It provides examples of different types of natural hazards such as tropical cyclones, earthquakes, volcanic eruptions, and tsunamis. It explains key concepts about these hazards such as the definitions of hurricanes, typhoons, and tropical cyclones, different types of volcanic eruptions and lava, and how tsunamis differ from ordinary wind waves in having much longer wavelengths and periods. Images and diagrams are included to illustrate volcanic eruptions, tsunamis, and the damage they can cause.
Geological hazard and hazard map
This document provides information on various geological hazards including earthquakes, volcanoes, landslides, and tsunamis. It defines an earthquake as the shaking of the earth's surface from a sudden release of energy in the lithosphere. It describes the focus and epicenter of an earthquake and different types of volcanic eruptions and associated hazards. It also outlines different types of landslides and tsunamis, explaining they are large waves caused by displacement of water.
Geohazards
This document discusses factors that influence slope stability, including gravity, slope angle, water content, and triggering events. Steeper slopes have higher shear stresses from gravity, making failure more likely. Water reduces shear strength by allowing soil grains to separate, and saturation can cause liquefaction. Earthquakes, slope modifications, and erosion undercutting slopes can trigger mass wasting events like landslides by reducing stability.
Earthquake and risk mitigation
This document discusses earthquakes and risk mitigation. It begins with definitions of earthquakes and their causes, which include the movement of tectonic plates and human activities like coal mining and dam building. It then covers the effects of earthquakes and how they are measured. The focus is the location where the rock movement originates and the epicenter is where it reaches the surface. The document outlines strategies for mitigating earthquake risks, including educating the public, building standards, and emergency response plans. It provides guidance on personal safety both before, during, and after an earthquake through practices like having an emergency kit and dropping, covering, and holding on if an earthquake strikes.
Volcano hazards
1. The document discusses various volcano hazards such as lahars, ash fall, pyroclastic flows, ballistic projectiles, volcanic gases, and lava flows.
2. It also covers signs of an impending volcanic eruption, different types of volcanoes, and how to prepare before, during, and after an eruption using appropriate safety measures.
3. The document provides information on interpreting volcano hazard maps and understanding how they can help assess risk from future eruptions.
Environmental Hazards
The document discusses several types of environmental hazards including tropical storms, landslides, volcanic eruptions, earthquakes, and mass movements. Landslides can be hazardous when they occur near human settlements. They are often triggered by heavy rain, which increases pore water pressure and causes unstable slopes to fail. Volcanic eruptions provide hazards from lava, pyroclastic bombs and deadly pyroclastic flows. Hazards extend beyond the immediate eruption and can include tsunamis, landslides and mudflows. Earthquakes and volcanic eruptions are monitored using tools like seismographs and tilt meters to help predict locations and timing of future events, though accuracy remains limited.
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This document provides information about different natural disasters including earthquakes, landslides, tsunamis, and mine disasters. It defines each disaster, describes how they occur, how they are measured or classified, safety precautions to take during each one, and methods to prevent or mitigate future risks. Key details covered include how seismic waves cause earthquakes, common causes and types of landslides, how tsunamis are generated by earthquakes and volcanic eruptions under water, and important accident causes and prevention recommendations for mine disasters.
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Ground Shaking
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Tsunami
Fire
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Ground Shaking:
Environmental Hazards
This document discusses environmental hazards such as earthquakes and volcanoes. It defines earthquakes as sudden movements caused by faults or volcanic activity. Earthquake waves are categorized into body waves (P and S waves) and surface waves (Love and Rayleigh waves). Volcanoes form when magma rises from the earth's crust and erupts. Volcanic eruptions can be effusive or explosive depending on gas and viscosity levels. Monitoring seismic activity, ground deformation, and gas outputs provides signs of impending volcanic eruptions. Volcanic flows also pose hazards, though spraying water can help slow them.
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This is a very detailed ppt on Lanslides
its causes types effects precautions to be taken
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A2 CAMBRIDGE GEOGRAPHY: HAZARDOUS ENVIRONMENTS - HAZARDS RESULTING FROM TECTO...
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I do not have enough context to answer those specific questions. The document provided discusses different types of earthquake hazards and their effects, but does not mention fault types in the Philippines or bringing cookies to class.
Geological disasters
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This document was submitted as an assignment as a part of the partial fulfillment of my master's degree.
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I do not have enough context to answer those specific questions. The document provided discusses different types of earthquake hazards and their effects, but does not mention fault types in the Philippines or bringing cookies to class.
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Natural disaster
- 1. sweet n sour proudly presents: Natural disaster
- 2. Question time! When strong hurricane hits in an uninhabited area in Africa ,is it by any chance considered as a natural disaster? Answer : NO! relax people ,that is merely just a natural hazard (:
- 3. So what is nature disaster? It is when natural hazard .(e.g. floods, volcanic eruptions, earthquakes, tsunamis, avalanches etc. ) affects the environment ,leading to financial and human losses. Epidemics caused by bacteria or viruses are considered natural disasters. Ex : swine flu .
- 4. What causes nature disaster? disasters occur when hazards meet vulnerability. The root causes of many natural disasters are mainly: soil erosion seismic activity and green house effect
- 5. Causes Seismic Activity:Seismic activity is the most common cause of Tsunamis. During an earthquake, the sea floor becomes deformed, forcing a displacement of water.
- 6. Soil erosion :Soil is naturally removed by the action of water or wind, Leading to landslides. Green house effect : greenhouse gases(CO2 , CFC etc.) make the Earth warmer by trapping the heat energy in the atmosphere ,causing icebergs to melt. More lands will be flooded as the sea level increases.
- 7. Two categories of natural disasters (1)Hydrometeorological Hazards which are natural processes or phenomena of atmospheric, hydrological or oceanographic nature. (These include flood, debris and mudflows, tropical cyclones, storm surges, wind, rain and other severe storms.)
- 8. 2) Geological Hazards are natural phenomena that include processes of endogenous origin or tectonic or exogenous origin, such as mass movements.( These include earthquakes, tsunamis, volcanic activity and landslides etc .)
- 9. Volcano A volcano is an opening, or rupture in a planet's surface or crust, which allows hot magma, ash and gases to escape from below the surface. effects: Volcanic ashes blast Lava Gas
- 10. Tsunami Tsunami :tsunamis are some of the most devastating natural disasters known to man. effects : Destruction of buildings Financial losses Death Spread of disease
- 11. Hurricane is a storm system characterized by a large low-pressure center and numerous thunderstormsthat produce strong winds and heavy rain. effects Spread of disease Destruction of buildings Financial losses Death
- 12. Ten deadliest natural disaster AFTER 1920 1.JAPAN,1923 A third of Tokyo is destroyed and much of Yokohama in an 8.3 earthquake which between 140,000 and 200,000 people. 2.CHINA , 1931 Flood on the Changjiang River took at least 145,000 people (other estimates go over a million, but we have not confirmed that). 3.CHINA , 1935 Yellow River flood "caused 27 counties inundated and 3.4 million victims". how much is the actual figure of victims , is still not confirmed.
- 13. 4.CHILE , 1939 28000 people were killed from 8.3 earthquake . 5.CHINA ,1942 - 1943 A drought in the Henan province took more than a million people 's life. 6.WORLD WIDE , 1957 At least a hundred thousand peple died from Asian flu.
- 14. 7.AFRICA , 1981 - 1984 Rivers and lakes dried up from the drought that had incredible impact on twenty African nations. During one season about 20,000 were starving to death EACH MONTH. 150 million were facing starvation . 8.NORTH KOREA , 1995-1998 Over 3 millionare said to have died from famine and floods in North Korea. 9.12 SOUTH ASIAN NATIONS , 2004-2005 Earthquake of 9.0 and the resulting tsunami creates one of the world's worst disasters. It does major damage to: Indonesia, India, Sri Lanka, Thailand, Malaysia, Myanmar, the Maldives, Somalia, Tanzania, Seychelles, Bangladesh, and Andaman. Deaths: Between 235,000 and 285,000.
- 15. 10.HAITI , 2010 Earthquake - still counting.Most estimates now exceed 100,000 dead.
- 16. How to prevent nature disaster? There IS no way to prevent natural disasters.they HAPPEN. Earthquakes, for instance, The best prevention we can do about global warming is to use our natural resources carefully and judiciously, build our homes and other structures the best we can, to withstand as much as possible, and stop being so arrogant as to think we have more power than NATURE. And do recycling ! SAVE OUR MOTHER EARTH
- 17. Links http://en.wikipedia.org http://en.wikipedia.org/wiki/Hurricane http://library.thinkquest.org/17457/volcanoes/effects.php
- 18. T.Q