I felt a slight microseism while sitting in the park.

Microseisms are small vibrations in the Earth's crust.

The microsized particles are more easily absorbed by the skin.

The microsize particles are too small to be seen with the naked eye.

The microseismic activity in the area is increasing.

Microseismicity refers to the occurrence of small-scale seismic events.

Microseismology is a branch of geophysics that focuses on the study of microseisms.

The researchers conducted a microseismological study to analyze the seismic activity in the region.

The microseismometer detected subtle vibrations in the ground.

Microseismometers are used to measure small ground vibrations.