Answer:
Kelvin wave
Explanation:
The Kelvin waves are usually defined as one type of planetary waves that are characterized by the presence of large peaks as well as valleys that can eventually lead to the change in the depth of ocean water. These are non-break waves.
This type of wave occurs during the time of occurrence of El Nino, which flows only towards the eastern side covering the equatorial region. These are large waves extending up to thousands of miles.
This wave occurring in the equatorial region normally has two phases, namely the up-welling phase, and the down-welling phase, and this eventually leads to various changes in the surface temperature of the sea as well as in the subsurface region within the eastern part of tropical Pacific ocean.
