A natural event characterized by the shaking of the ground, typically caused by the movement of tectonic plates or volcanic activity, leading to vibrations that can be felt on the earth's surface.
A phenomenon where accumulated stress in the Earth's crust is released, resulting in the generation of seismic waves and subsequent ground shaking.
A geological occurrence that manifests in various intensities, ranging from imperceptible tremors to significant jolts that can affect structures and the safety of inhabitants.
An event that can be recorded by seismographs even when not felt by humans, as well as those that are perceptible to people, indicating the varying degrees of intensity associated with such vibrations.
Example:
地震がその地域を襲った。
A seismic event generated by human activities, typically involving the detonation of explosives, to facilitate the exploration of underground structures or resources.
An earthquake that is intentionally created for research, geological studies, or resource extraction rather than occurring naturally.
A seismic phenomenon produced by artificial means, often used in scientific investigations to analyze subsurface formations or assess geophysical properties.
A seismic event characterized by a high magnitude, typically defined as a magnitude of seven or higher, that causes significant damage and affects a wide area.
A large-scale earthquake that results in extensive destruction and has far-reaching impacts on communities and infrastructure.
A term used to describe a powerful earthquake that can lead to catastrophic consequences, especially in densely populated regions.
Example:
ニュースによるとギリシアに大地震があったようだ。
A specialist who studies the causes, effects, and patterns of earthquakes and the movement of the Earth's crust.
A scientist dedicated to analyzing seismic data to understand earthquake phenomena and improve prediction methodologies.
An expert in the field of seismology, focusing on the research and monitoring of seismic activities to assess geological hazards.
A researcher engaged in exploring the physical processes underlying tectonic movements and their impact on the planet's structure.
An instrument designed to detect and record vibrations in the ground caused by seismic activity, using a pendulum to create a stable reference point for measuring both horizontal and vertical movements.
A specialized device that monitors and documents the intensity and frequency of ground motion during earthquakes, facilitating the analysis of seismic events.
A scientific tool employed for observing and capturing the details of seismic waves, enabling researchers to study the characteristics and impacts of earthquakes.