ABSTRACT
This chapter provides an overview of the geological dynamics of earthquakes and volcanoes, their historical interpretations, scientific advancements, and societal implications. It highlights the understanding of Earth’s crust as tectonic plates, tracing the evolution of theories from continental drift to plate tectonics. The text delves into the mechanisms of earthquakes, their classification based on depth and behavior, and the development of earthquake early warning systems (EEWSs) for disaster risk mitigation. Similarly, it considers the classification of volcanoes, their eruption styles, and the monitoring systems employed to assess volcanic hazards. Emphasis is placed on the impacts of these natural phenomena, ranging from tsunamis to ash fall, and the importance of mitigation strategies, such as building codes and community education. Despite the hazards posed by earthquakes and volcanoes, the text also recognizes their cultural and environmental significance, advocating for a balanced approach to risk management and sustainable development in volcanic regions.
