vi chấn

Một nhà khoa học đang nghiên cứu các vi chấn trên màn hình máy tính.

Definition

1. Noun:
   • Microseism: A very faint, nearly continuous tremor or vibration of the earth's crust, typically caused by natural phenomena such as ocean waves, atmospheric pressure changes, or distant storms, and not by localized seismic events like earthquakes. These vibrations are usually detectable only by sensitive seismographs.

Usage Examples

• Noun:
  • Các nhà địa chấn học đang nghiên cứu nguồn gốc của vi chấn. (Seismologists are studying the origin of the microseism.)
  • Máy đo địa chấn ghi nhận được một loạt vi chấn. (The seismograph recorded a series of microseisms.)

Advanced Usage

• In technical contexts, "vi chấn" refers specifically to ground motions with periods of 1 to 10 seconds, often constituting the Earth's permanent background noise.
  • Dữ liệu vi chấn có thể giúp lập bản đồ cấu trúc lòng đất. (Microseism data can help map subsurface structures.)

Variants and Related Words

• Địa chấn (n): Seism, earthquake. A broader term for earth tremors.
• Tiền chấn (n): Foreshock. A smaller tremor preceding a main earthquake.
• Dư chấn (n): Aftershock. A smaller tremor following a main earthquake.

Synonyms

• Tremor: A slight earthquake or shaking movement.
• Ground vibration: A general term for oscillations of the earth's surface.

Related Scientific Terms

• Seismic noise: The persistent, random vibrations of the ground, within which microseisms are a primary component.
• Động đất (n): Earthquake. A significant and destructive seismic event, distinct from a microseism.