Earthquake precursors:
1. Earthquake precursors that should be directly detectable by human sense organs: (such as abnormal groundwater, abnormal animals, ground sounds, ground lights, etc.)
2. There should be low-frequency earthquakes before large-intensity earthquakes. Learn more about the news.
Annotation: Learn more about the response measures when an earthquake strikes, so as to prevent and mitigate disasters.
In addition:
Premonitions of volcanic eruption:
1. Thick smoke and a small amount of dust emerge from the crater, and the smell of sulfur appears in the area around the crater, which continues to occur Low-frequency earthquakes, etc.
Tsunami precursors:
1. Bubbles continue to appear on the sea surface, and the sea water suddenly recedes.
In general, survival knowledge is very important and I hope it will be useful to you. Thanks!