I’ve been forecasting waves along the Central Coast since 1991, but the recent swell event marked the longest period and wavelengths I’ve ever observed. The waves were immense and powerful ...

In the 1960s and 1970s, the Apollo missions that landed on the moon brought along two kinds of seismometers: one to measure longer-period seismic waves that originated deeper underground, and one ...

As oceanographer Walter Munk of Scripps Institution of Oceanography discovered in the early 1960s, long-period swells attenuate far less as they travel across open water than shorter-period waves ...