Yes -- they are called "internal waves" or "gravity waves" and occur where there are layers of different density (arising from different salinity or temperature). They can be hundreds of feet high, but are have much lower frequency and speed than surface waves. See for example The ocean's hidden waves show their power. read more
Yes -- they are called "internal waves" or "gravity waves" and occur where there are layers of different density (arising from different salinity or temperature). They can be hundreds of feet high, but are have much lower frequency and speed than surface waves. See for example The ocean’s hidden waves show their power. read more
"In the deep ocean, there can be vigorous mixing processes, but if you look for these waves at the surface, they generate only a ripple. You don't notice them," van Haren told Live Science. The canyon is one of the only passes through an underwater mountain range that blocks deep-ocean currents flowing along the Atlantic Ocean seafloor. read more