2022年11月11日 · Tsunamis occur in the wake of large earthquakes. They grow in amplitude because the speed of a water gravity wave is influenced by water depth, causing the wave to 'pile up'. In particular, if the wavelength is (much) greater than the depth of the water, the speed at which a wave will travel is roughly:

$\begingroup$ In short, tsunamis are usualy caused by a net movement of the ocean floor, which typically rises several meters over a large area. That displaced water bulges over that area and then flows sideways as a very shallow wave (in the order of centimetres, hardly noticable over the normal wind wave s) which only increases in height as ...

Different scientists have brought forth a theory that climate change can cause earthquakes, tsunamis and volcanic eruptions. For example: Professor Bill McGuire of University College London in his book Waking the Giant: How a changing climate triggers earthquakes, tsunamis, and volcanoes (OUP, 2012).

2014年11月30日 · It is well known among regular beach goers that a sudden shoreline drawback is often a warning sign for an impending Tsunami. My understanding of Tsunamis is they they form as a result of the seafloor abruptly changing, causing a local vertical displacement of water at the site of above the disruption, which initiates the wave.

The notion of a taller-than-skyscraper, so called "megatsunami" is not new - with the often-reported 524m (1720 feet) high Lituya Bay tsunami of 1958 is sometimes referred as such (despite the wave...

The ability to predict depends on the cause of the tsunami.Earthquakes can't be predicted, so a tsunami caused by an earthquake can't be predicted.

2014年10月2日 · Tsunamis form as a series of moderate amplitude, long interval waves that travel away from the initial impact. The first of these waves has the highest amplitude of the initial waves, and becomes the 'big one' later.

2015年7月5日 · Tsunamis have wavenumbers that are large enough so that even in the middle of the ocean they fall into the shallow water regime, meaning that the particle trajectories are approximately very flat ellipses, or horizontal lines, and this does not decay with depth.

2018年5月22日 · Tsunamis are caused by water displacement due to earthquakes; this has nothing to do with global warming. Any changes in density would be trivial, and although the water would have more thermal energy, this would not affect or …

2020年9月15日 · Tsunamis out in the deep ocean travel very fast -- around 500 mph -- which means that they cross ocean basins in about as much time as it takes a plane to fly across. So an earthquake in Japan gives Hawaii and the US West Coast many many hours of warning. Close to shore, tsunamis are much slower, but of course the distances are also shorter.