How is the triangle wave of the devil's sea formed?

According to the observation of marine meteorologists, there are a lot of storms in the North Pacific in winter, but for a ship of 10,000 tons, especially a ship of tens of thousands of tons or more, these storms can't really overturn or crush it. However, scientists believe that the wind and waves near the "Devil's Sea" are different from other waters in the North Pacific. In the "Devil's Sea", you can often see a pyramid-shaped "triangle wave", which can lift up to 20 ~ 30 meters.

"Triangle wave" is the chief culprit of the sinking of the great ship! But where did the triangle wave come from? Marine scientists have made a lot of guesses, but because humans have not obtained the first-hand information about the "Devil's Sea", they are just guesses.

First of all, the seabed east of Shimazaki is an active area for volcanoes and earthquakes. When an undersea volcano erupts or an undersea earthquake erupts, a huge evil wave will be formed, which is what people see as a "triangular wave".

Secondly, the "Devil's Sea" is located at the intersection of waves in all directions. In bad weather conditions, waves and swells from different directions are superimposed here, forming strange peaks and waves.

Third, the Devil's Sea is a world-famous warm current-Kuroshio flowing sea area, with high water temperature, and the air front blowing from Siberia just reaches this area. Every winter, the water temperature here is related to the temperature, often above 20℃, so there is often updraft over the sea. After the low-pressure cold front, the wind direction often changes suddenly, resulting in "triangular waves" on the sea surface.

All three conjectures seem to have some truth. In order to uncover the mystery of "Devil's Sea" and ensure the safety of navigation in the North Pacific in winter, Japan decided to set up an automatic observation ocean buoy on the "Devil's Sea" to record data such as waves, air pressure, wind force and current. In addition, Japan also decided to send an ocean survey ship to conduct a comprehensive survey of the seabed topography, marine meteorology and marine environment of Devil's Sea, so as to fundamentally solve the mystery of making waves and sinking ships in Devil's Sea.