For 10 points, identify these large waves that can be caused by earthquakes.
Titov and Synolakis developed the MOST model for these entities. These entities are likely to be formed if there is a sharp upslope at low frequencies on an effective movement-frequency diagram. A distinctive V-shaped formation found on Madagascar indicates that a "mega" one of these entities could have been caused by an ancient meteor impact. That formation is the Fenambosy chevron. Run-up is one measure used to characterize these entities. Due to their long wavelength, they are always shallow-water waves. Drawback, a dramatic drop in sea level, can occur when the trough of these entities reaches the coast first. For 10 points, identify these large waves that can be caused by earthquakes.
Titov and Synolakis developed the MOST model for these entities.
tsunamis [or seismic sea waves; or tidal waves]