These terms are both used to describe what happens where two separate weather systems collide and create this unique wave pattern. Square-patterned waves create a cross pattern on the surface of the water. Yes, ‘square waves’ and ‘cross sea’ are used interchangeably. Are square waves and a cross sea the same? And, we’re here to answer those for you! The more you know about ocean dangers, the more careful you can be so that you can enjoy your time at the beach. If you’re just learning about square, or cross, waves, you probably have a few more questions. (Credit: LetsGetPhil/Shutterstock) Other FAQs About Square Waves Not-so-fun fact: Cross seas can result in waves up to 10 feet high! Square waves in the ocean happen when two opposing swells collide. Studies have shown that this strength does cause boating accidents, drownings, and other dangers in the water. Their collective energy is incredibly powerful when you’re dealing with battling waves. If you’ve ever stood on the shore and tried to wade through rolling breakers or tried to paddle through the surf on a surfboard, you know how strong typical waves can be as they work toward the shoreline.īelow the surface, the sea currents move toward one another at an angle, sometimes greater than 45 degrees. With that said, if you think there’s a possibility you’re witnessing two weather systems forming square waves, it’s time to head to shore immediately. This is because the two wave directions are more powerful than rip tides. Watching square waves might seem fascinating, but it’s essential to understand that they can be extremely dangerous. This is when a cross swell occurs, creating square waves. When we’re dealing with two waves systems, eventually two opposing swells collide. Sometimes the direction of the wind changes, and this also affects wave patterns. When there’s no wind to interrupt swells, waves continue to travel into the open ocean. These waves are caused by wind rippling the surface of the water. Typically, waves come in and crash parallel to the shore. In fact, they occur when two wave systems meet. While square waves appear to be caused by something underwater, that’s actually not the case. Final Thoughts What Causes Square Waves in the Ocean?
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