A trough is the opposite of a crest, so the minimum or lowest point of the wave. When the crests and troughs of two sine waves of equal amplitude and frequency intersect or collide, while …

Inverted trough An inverted trough is an atmospheric trough which is oriented opposite to most troughs of the mid-latitudes. Most (but not all) inverted troughs are tropical waves (also …

Tropical Storm Dorian as a tropical wave just north of Puerto Rico on July 29, 2013. A tropical wave (also called easterly wave, tropical easterly wave, and African easterly wave), in and …

Significant wave height In physical oceanography, the significant wave height (SWH, HTSGW[1] or Hs) is defined traditionally as the mean wave height (trough to crest) of the highest third of the …

In probability theory and statistics, skewness refers to a distortion or asymmetry that deviates from a normal distribution. Waves that are asymmetric along the horizontal axis are called …

Shortwave (meteorology) Shortwave trough with associated vorticity. A shortwave or shortwave trough is an embedded kink in the trough / ridge pattern. Its length scale is much smaller than …

A plane wave is an important mathematical idealization where the disturbance is identical along any (infinite) plane normal to a specific direction of travel. Mathematically, the simplest wave is …

An "undertow" is a steady, offshore-directed compensation flow, which occurs below waves near the shore. Physically, nearshore, the wave-induced mass flux between wave crest and trough is …