China Seismological Network officially determined that at 7:24 Beijing time on July 30 (local time at 10:24 on July 30),A magnitude 7.9 earthquake occurred in the far sea off the east coast of Kamchatka (52.40 degrees north latitude, 160.20 degrees east longitude) with a focal depth of 10 kilometers.The Japan Meteorological Agency announced that due to the strong earthquake near the Kamchatka Peninsula,Currently, many coasts in Japan are under tsunami warning. The tsunami height is expected to be about 1 meter, and the expected arrival time of the tsunami from north to south is from 10:00 to 12:30 local time.
The Japan Meteorological Agency reminds coastal residents to pay attention to safety and avoid going to the seaside, ports or estuary areas.
A tsunami usually consists of a series of waves, called a wave train, so as successive waves reach the coast, their destructive power increases.
Some tsunamis do not appear as huge breaking waves on shore, but rather like a rapidly rising tide that inundates coastal areas.The disaster that tsunami brings to mankind is very huge. Destroying cities and villages on the shore in an instant. For all port facilities, collapsed buildings, and sudden disasters such as earthquakes, volcanoes, and tsunamis, humans can only prevent or reduce the losses caused by prediction and observation, but they cannot yet control their occurrence.