1. Small, rapid fluctuations or variations in a physical quantity, such as magnetic field strength, electrical current, or pressure, typically occurring at regular or semi-regular intervals.
Usage: Usually used in plural form; Common in geophysics and physics contexts
2. In geophysics, small-amplitude variations in Earth's magnetic field, typically with periods ranging from seconds to minutes.
Usage: Technical term used in magnetospheric and space physics research

Examples

• Scientists detected micropulsations in the Earth's magnetic field using sensitive instruments.
• The micropulsations in the electrical signal were too small to affect the overall system performance.
• Researchers study micropulsations to better understand space weather and its effects on satellites.
• The device measures micropulsations in pressure with remarkable precision.
• Micropulsations in the plasma were observed during the solar storm event.
• These micropulsations occur at frequencies between 0.5 and 5 Hz in the magnetosphere.