Dillard's and Dillards.com. provide a vast array of career opportunities within our stores and corporate offices. Â© Dillard's Inc. Dillard's Inc. is an Equal Opportunity Employer. Shop Online
Unlike body waves, surface waves (also known as long waves, or simply L waves) move along the surface of the Earth. Surface waves are to blame for most of an earthquake's carnage. They move up and down the surface of the Earth, rocking the foundations of man-made structures. Surface waves are the slowest moving of all waves, which means they arrive the last.
S waves- vibrate from side to side as well as up and down. They shake the ground back and forth and when they reach the surface they shake structures violently. Only move through solids. Surface waves- when S and P waves reach the surface they become surface waves. Surface waves move slower than P and S waves but they can produce severe ground movements. Some surface waves make the ground roll like ocean waves. Other surface wave sake buildings from side to side.