Script: Do you know? A tsunami is not just an ordinary "big wave". It is a kind of marine disaster triggered by the release of tremendous energy. The most common cause is an underwater earthquake. When the seabed crust suddenly fractures and the layers above and below shift, it will "lift" or "push down" the upper seawater - just like you quickly patting the water surface with your hand. The energy released in this instant spreads in all directions, forming a series of long-wavelength, low-frequency waves, which is what a tsunami is. In the deep sea, it may only be a few decimeters high, and humans can hardly feel it. But once it approaches the coast, where the seabed becomes shallower, these waves will be "compressed", and their height will rapidly increase, sometimes even exceeding 30 meters! A tsunami can travel at a speed of 800 kilometers per hour, faster than a jet plane. Therefore, it is both silent and extremely destructive. What we can do now is to conduct early monitoring and issue timely warnings, in an effort to gain more time for survival. You also need to generate tsunami during the video at the proper time. character: Wearing a windproof parka (dark green/grey blue), with slightly rolled trouser cuffs and slip-on waterproof boots Carrying a field notebook and a telescope The hair was a bit disheveled, and the eyes were focused, demonstrating the simplicity and experience of a field researcher. scene: The background is a real coastline or rocky area, with waves crashing against the rocks and the sky having a pale grey hue. In the background, far away, are ocean buoys and coastal warning posts, and on the left is a sign that reads "Earthquake Observation Point No. 4". The sound of the sea wind and the crashing waves are natural environmental sounds, enhancing the atmosphere of the documentary.