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Questions and Answers
Which of the following is classified as a seismic hazard?
Which of the following is classified as a seismic hazard?
Which of these hazards is NOT a direct result of volcanic activity?
Which of these hazards is NOT a direct result of volcanic activity?
What type of hazard is most closely associated with 'jökulhlaups'?
What type of hazard is most closely associated with 'jökulhlaups'?
Which of these is classified as an astronomic hazard?
Which of these is classified as an astronomic hazard?
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Increased strength of storms and increased forest fires are consequences of which type of hazard?
Increased strength of storms and increased forest fires are consequences of which type of hazard?
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What primarily determines the potential for recovery from a natural disaster?
What primarily determines the potential for recovery from a natural disaster?
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Which of the following is an example of an indirect effect of a natural disaster?
Which of the following is an example of an indirect effect of a natural disaster?
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According to the generalized disaster recovery model, what is the primary focus during the initial two weeks after a disaster?
According to the generalized disaster recovery model, what is the primary focus during the initial two weeks after a disaster?
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What is the relationship between the return periods and peak flow of the Fraser River floods as indicated by the data?
What is the relationship between the return periods and peak flow of the Fraser River floods as indicated by the data?
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Which of these is the best description of a correlation between two variables?
Which of these is the best description of a correlation between two variables?
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Why might reconstruction after a disaster be more time-consuming and costly than initially planned?
Why might reconstruction after a disaster be more time-consuming and costly than initially planned?
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Which of the following is the best example of causation?
Which of the following is the best example of causation?
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What does a negative correlation between two variables typically indicate?
What does a negative correlation between two variables typically indicate?
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Which of the following is an example of an anthropogenic influence on a natural hazard?
Which of the following is an example of an anthropogenic influence on a natural hazard?
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Which of the following options could be both natural and anthropogenic?
Which of the following options could be both natural and anthropogenic?
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What is a primary reason for using a systems approach when analyzing hazards?
What is a primary reason for using a systems approach when analyzing hazards?
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Which of the following processes is NOT primarily driven by Earth's internal heat?
Which of the following processes is NOT primarily driven by Earth's internal heat?
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What is the main role of the sun's energy in creating hazards?
What is the main role of the sun's energy in creating hazards?
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Which of the following is an example of a hazard mainly influenced by the gravitational attraction of the Earth?
Which of the following is an example of a hazard mainly influenced by the gravitational attraction of the Earth?
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What is the key difference between a 'cause' and a 'trigger' in the context of hazards?
What is the key difference between a 'cause' and a 'trigger' in the context of hazards?
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According to the provided definitions, what would best describe a long period of drought that leads to soil cracking and makes the ground unstable?
According to the provided definitions, what would best describe a long period of drought that leads to soil cracking and makes the ground unstable?
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What is identified as a significant limitation of any conceptual framework for hazards?
What is identified as a significant limitation of any conceptual framework for hazards?
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Which of the following is NOT a listed reason for the limitations of a conceptual framework for hazard analysis?
Which of the following is NOT a listed reason for the limitations of a conceptual framework for hazard analysis?
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Which factor necessitates a balanced, multi-lateral approach to the study of hazards and disasters?
Which factor necessitates a balanced, multi-lateral approach to the study of hazards and disasters?
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What is one of the primary reasons that the effects of natural hazards are becoming more severe?
What is one of the primary reasons that the effects of natural hazards are becoming more severe?
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According to the framework for decision-making, what is the main goal of hazard prediction?
According to the framework for decision-making, what is the main goal of hazard prediction?
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Why is risk analysis important in understanding hazardous processes?
Why is risk analysis important in understanding hazardous processes?
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What is an example of how one hazard can trigger another?
What is an example of how one hazard can trigger another?
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What is a consequence of increasing populations and financial investments in hazard-prone areas?
What is a consequence of increasing populations and financial investments in hazard-prone areas?
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The 2011 earthquake in Japan serves as an example of what aspect of natural disasters?
The 2011 earthquake in Japan serves as an example of what aspect of natural disasters?
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What was the primary impact of the Nov 2021 rains that closed highways in southern BC?
What was the primary impact of the Nov 2021 rains that closed highways in southern BC?
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Which of the following best describes the relationship between hazard and risk?
Which of the following best describes the relationship between hazard and risk?
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What distinguishes an event described as a 'catastrophe' from one described as a 'disaster'?
What distinguishes an event described as a 'catastrophe' from one described as a 'disaster'?
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In the context of decision-making, what is the key difference between risk and uncertainty?
In the context of decision-making, what is the key difference between risk and uncertainty?
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Which of these best describes vulnerability in the context of natural hazards?
Which of these best describes vulnerability in the context of natural hazards?
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According to the magnitude-frequency relation, what generally happens to the magnitude of an event as its frequency increases?
According to the magnitude-frequency relation, what generally happens to the magnitude of an event as its frequency increases?
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Based on the content provided, why is 'susceptibility' more likely to happen to people than 'vulnerability'?
Based on the content provided, why is 'susceptibility' more likely to happen to people than 'vulnerability'?
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What does the equation $M = Fe^{-x}$ represent in the context of natural hazards?
What does the equation $M = Fe^{-x}$ represent in the context of natural hazards?
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Why do earthquakes with high frequency generally have a lower magnitude?
Why do earthquakes with high frequency generally have a lower magnitude?
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What geological debate was centered on the importance of large, rare events vs. small, frequent ones?
What geological debate was centered on the importance of large, rare events vs. small, frequent ones?
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Which of the following is an example that best illustrates the difference between risk and impact?
Which of the following is an example that best illustrates the difference between risk and impact?
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Match the disaster effects with their typical timing relative to the event:
Match the disaster effects with their typical timing relative to the event:
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Match the stages of disaster recovery with their description:
Match the stages of disaster recovery with their description:
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Match each hazard with its primary energy source:
Match each hazard with its primary energy source:
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Match the typical duration of disaster response phases:
Match the typical duration of disaster response phases:
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Match these terms related to hazards with their correct definition:
Match these terms related to hazards with their correct definition:
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Match a description of the recovery with its effect on the society after the event:
Match a description of the recovery with its effect on the society after the event:
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Match each hazard type with its associated process:
Match each hazard type with its associated process:
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Match the following actions with the phase of disaster recovery they belong to:
Match the following actions with the phase of disaster recovery they belong to:
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Match each mechanism to its contribution to Earth's internal heating:
Match each mechanism to its contribution to Earth's internal heating:
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Match each term to its specific consequence:
Match each term to its specific consequence:
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Match the following processes with their respective effects:
Match the following processes with their respective effects:
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Match each geological process with its associated hazard:
Match each geological process with its associated hazard:
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Match the energy source with the type of hazard it primarily influences:
Match the energy source with the type of hazard it primarily influences:
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Match each term with its most closely related concept:
Match each term with its most closely related concept:
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Match the following concepts from the 'Smart Hazard Approach' with their descriptions:
Match the following concepts from the 'Smart Hazard Approach' with their descriptions:
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Match each concept with its appropriate description in the context of hazard decision-making:
Match each concept with its appropriate description in the context of hazard decision-making:
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Match the following effects of natural hazards with their descriptions:
Match the following effects of natural hazards with their descriptions:
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Match each hazard effect with its consequence:
Match each hazard effect with its consequence:
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Match the following events to the framework of hazard decision-making concepts they best represent:
Match the following events to the framework of hazard decision-making concepts they best represent:
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Match each concept with its description regarding disaster severity:
Match each concept with its description regarding disaster severity:
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Match each concept with the primary context in which it is used:
Match each concept with the primary context in which it is used:
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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Match the type of event with its scale of impact:
Match the type of event with its scale of impact:
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Match the following concepts with their relationships in risk analysis:
Match the following concepts with their relationships in risk analysis:
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Match the following hazard related concepts with their descriptions:
Match the following hazard related concepts with their descriptions:
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Match these terms with their explanation:
Match these terms with their explanation:
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Match the concept to the the description:
Match the concept to the the description:
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Match the following terms from the natural hazards discussion with their explanations:
Match the following terms from the natural hazards discussion with their explanations:
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Match these terms relating to natural events with their descriptions:
Match these terms relating to natural events with their descriptions:
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Match the concepts with their associated factors:
Match the concepts with their associated factors:
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Match the following terms related to risk and outcomes:
Match the following terms related to risk and outcomes:
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Match the following terms with their descriptions regarding natural hazards:
Match the following terms with their descriptions regarding natural hazards:
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Match the type of hazard to its description:
Match the type of hazard to its description:
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Match the concepts related to hazard analysis with their descriptions:
Match the concepts related to hazard analysis with their descriptions:
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Match the following terms with their descriptions related to variables:
Match the following terms with their descriptions related to variables:
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Match each scenario with its classification relative to the causes of hazards:
Match each scenario with its classification relative to the causes of hazards:
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Relate each process below with potential influencing factors:
Relate each process below with potential influencing factors:
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Match the hazard causes with whether they are primarily 'natural' or 'anthropogenic':
Match the hazard causes with whether they are primarily 'natural' or 'anthropogenic':
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Match the concepts relating to how variable are related:
Match the concepts relating to how variable are related:
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Match the concepts relating to human and nature's roles:
Match the concepts relating to human and nature's roles:
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Match the concept with its description:
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Study Notes
Natural Hazards and Disasters - Introduction Part 2
- A smart hazard approach is needed due to economic globalization, multi-national information access, and negative human impact on the global environment.
- Examples include the 2011 earthquake in Japan, which caused a radiation leak and tsunami affecting Western North America. The 2021 BC floods and related transportation issues further highlighted these interconnected problems.
- The 2018 earthquake in Palu, Indonesia is another example of widespread damage.
A Smart Hazard Approach
- People are concerned with hazards common to their locations, like Calgary floods and Vancouver earthquakes.
- A balanced, multi-lateral approach is required for studying hazards and disasters.
- A conceptual framework for decision making includes predicting hazards via scientific analysis.
- Monitoring and mapping events for making predictions is crucial.
- It's possible to forecast future events based on past frequency, magnitude, and occurrence patterns.
- Also, risk analysis is important for understanding hazardous processes.
- Quantifiable events, including their estimated probabilities and consequences, are essential.
- Different natural hazards and their relationships to the environment are interconnected; one process can trigger another. Examples include earthquakes causing tsunamis and heavy rain causing landslides.
Damage from Hazards
- Damage from natural hazards is increasing, turning previously considered disasters into catastrophes.
- Growing populations and investments are at higher risk.
- Increased human activity and climate change are escalating the frequency and magnitude of events.
- Damage in Dawson Springs, Kentucky from a 2021 tornado is further evidence of increasing hazard impacts.
Limitations of the Conceptual Framework
- Despite good systems, some situations are unpredictable or impossible to analyze or record with definitive certainty.
- This could be due to remote locations, rapid events, forces too large to measure, or poorly understood processes.
Systems Approach
- Analyses require organization.
- Natural hazards are processes needing energy to function.
- Understanding energy source and amount is important to understanding hazards.
- Three energy sources are Earth's internal heat, energy from the sun, and gravitational attraction of Earth.
Earth's Internal Heat
- After Earth's formation, three mechanisms lead to internal heating: collisions of atoms, compression, and the radioactivity of elements.
- These mechanisms create slow mantle convection, causing plate tectonics, leading to earthquakes and volcanoes.
Energy from the Sun
- Solar energy drives atmospheric and ocean circulation, making winds and evaporating water.
- This creates climate patterns and violent weather events like hurricanes, tornadoes, hail, droughts, floods, and erosion.
Gravitational Attraction of Earth
- Earth's gravity drives mass-wasting processes: materials moving downhill such as avalanches, landslides, and mudslides.
- Earth's gravity also attracts objects from space, leading to impacts from asteroids and meteorites.
Conceptual Framework for Decision-Making - Risk Analysis
- Risk analysis helps to understand the effects of hazardous processes.
- Risk analysis quantifies events and helps to estimate probabilities and consequences.
Conceptual Framework for Decision-Making - Linkages
- Linkages exist among different natural hazards and between hazards and their physical environment.
- One process can trigger another.
Terminology - Cause vs Trigger
- Both describe what makes a hazard occur but in different time frames:
- Cause: long-term buildup of conditions creating the hazard
- Trigger: short-term event initiating the hazard's action
- Often, they are used interchangeably.
Terminology - Correlation vs Causation
-
Correlation: describes the degree to which two variables move together statistically.
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Positive correlation: variables change in the same direction.
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Negative correlation: variables change in opposite directions.
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Correlation does not imply causation.
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Causation: a direct cause-and-effect relationship is established, such that a change in the first variable causes a change in the second.
Terminology - Risk vs Impact vs Vulnerability
- Risk: Likelihood of harm (probability is known).
- Impact: What happens if the risk occurs.
- Vulnerability: Weaknesses in a system (not always directly related to the hazard).
Terminology - Disaster vs Catastrophe
- Both refer to events causing serious injury or death along with property damage, but happen in a limited time frame:
- Disaster: limited in area, with direct consequences
- Catastrophe: larger scale, with direct and indirect (more often) consequences, and therefore much more costly to remediate.
Magnitude and Frequency (Earthquakes, etc.)
- People most often are concerned with how big natural hazards are and how often they happen.
- Magnitude relates to the amount of energy released, and frequency to how often events happen.
- Larger events occur less frequently, smaller events occur more frequently.
- Magnitudes and frequencies can be described mathematically.
- In the past, geologists debated whether rare, large events or common smaller events have a more significant impact on Earth's formation.
Reactive Response - Recovery
- Recovery attempts for natural disasters can vary greatly depending on the type of disaster and how often similar events occur.
- Disaster effects can be direct (like deaths, injuries, and property damage) or indirect (like crop failure, starvation, emotional distress, or loss of employment or tax revenue).
- The importance of indirect effects might not always be readily apparent.
Stages of Recovery
- Stages to recovery from disasters usually include emergency work, restoration of services and communication, and reconstruction.
- Disasters can cause long-term recovery due to weakened infrastructure and limited resources to repair damage.
- A general model illustrates the different periods in disaster recovery.
Potential Natural Hazards
- A list of natural hazards is available, by types (atmospheric, seismic, hydrologic, volcanic, wildfire, etc.) and specific examples.
Hazards by Season
- Natural hazards vary based on the time of year, latitude and hemisphere.
- Some examples are given of when specific hazards are most likely to occur. This information (along with the other parts of these notes) provides a framework for better understanding natural hazards and the associated concepts from which decisions can be made.
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Description
Explore the interconnected challenges posed by natural hazards and disasters in today's globalized world. This quiz discusses the implications of events like the 2011 Japan earthquake and the 2021 BC floods, while emphasizing the importance of a smart hazard approach. Gain insights into risk analysis, prediction, and monitoring for disaster management.