Hazard

• Geohazard


  A natural or human-induced geological condition that can cause damage or loss of life and property
• Geohazard


  • It is a natural, active geologic process that can cause widespread damage or loss of property and life
  • Geohazards are related to geological and environmental conditions and can involve long-term or short-term events
  • Geohazards are the outcomes of active geological processes, such as earthquakes, volcanoes, landslides, floods, and tsunamis
• Geohazards


  • Earthquakes
  • Volcanic eruptions
  • Landslides
  • Tsunamis
  • Floods
  • Soil erosion
• Geohazards


  • They have significant impacts on society, economy, and the environment
  • They can cause loss of life, damage to infrastructure, and environmental degradation
• Understanding geohazards is important for assessing and mitigating risks associated with different geological events
• Hazard


  Any situation, activity, or event that has the potential to cause harm, injury, damage to property, or adverse effects on the environment
• Risk


  The likelihood or probability of a hazard causing harm or adverse consequences
• Disaster


  A sudden or prolonged event caused by natural or human-induced hazards that results in significant disruption, damage, and adverse impacts on communities, infrastructure, economies, and the environment
• Differences between hazard and disaster

  • Hazard: A source of potential harm or danger
  • Disaster: An event that causes significant harm, damage, or disruption
  • Hazards exist before a disaster occurs
  • A disaster occurs as a result of a hazard event
  • Hazards occur at less populated areas
  • Disasters occur in more populated areas
  • Hazards have less impact or consequences
  • Disasters have more impact or consequences
  • Hazards are normally long term
  • Disasters are short term or sudden impact
  • Hazards may or may not result in significant impacts
  • Disasters result in significant impacts on lives, property, and the environment
• Importance of studying geohazard

  • Risk assessment: Identifying vulnerable locations, evaluating impacts, and guiding mitigation strategies
  • Disaster Preparedness: Helping communities prepare and respond to disaster events effectively
  • Sustainable Development: Including geohazard assessments into land-use planning and development projects
  • Environmental Conservation
• Long-term processes in geohazard

  Slow, lasting changes that take place over extended periods, from years to centuries
• Characteristics of long-term process

  • Slow and may not be immediately visible
  • Require observation and analysis for longer periods to detect trends and patterns
  • Can result in significant impacts on landscapes, ecosystems, and geological hazards
  • Helps in assessing the vulnerability and resilience of geohazards
• Adaptation strategies and sustainable land management practices are important for mitigating impacts and promoting resilience
• Short-term processes in geohazard

  Rapid or sudden events that occur over a short period, ranging from seconds to days or weeks
• Characteristics of short-term process


  • Occur for a short period or duration
  • Occur immediately and spread quickly
  • Unpredictable
  • High intensity