Infrasonic

{
  "id": "MLC-T-MET-006548",
  "term": "Infrasonic",
  "field": "Meteorology and atmospheric science",
  "definition": "Describing sound waves with frequencies below the lower limit of human audibility, typically less than 20 hertz. These low-frequency waves can travel long distances through the atmosphere and are generated by natural phenomena such as volcanoes, earthquakes, severe weather, and meteors. Infrasonic sensors are used to detect and monitor these events.",
  "see_also": [
    "ultrasonic"
  ],
  "url": "https://mlchart.com/terminology/meteorology/infrasonic/"
}