Tsunami is a natural phenomenon. It causes several damages and causalities. Coastal regions will be treated by tsunamis after submarine earthquakes. Therefore, study on tsunamis is necessary in coastal regions. Venezuela is located in the vicinity of Caribbean Sea. Therefore, it seems that establishment of Venezuela tsunami database is a necessity.

These offshore model scenarios were then used as input for the high-resolution inundation model for Hilo Bay and the model computed tsunami dynamics on several nested grids, with the highest spatial resolution of 30 meters inside the Hilo Bay. None of the tsunamis produced inundation at Hilo, but all of them recorded nearly half a meter (peak-to-trough) signal at Hilo gage. Model forecast predictions for this tide gage are compared with observed data. The comparison demonstrates that amplitudes, arrival time and periods of several first waves of the tsunami wave train were correctly forecasted. More tests are required to ensure that the inundation forecast will work for every likely-to-occur tsunami. When implemented, such forecast will be obtained even faster and would provide enough lead time for potential evacuation or warning cancellation for Hawaii and the U.S. West Coast.

Some natural factors such as tree cover on the coastline are able to alleviate the effects of a tsunami. Some locations in the path of the 2004 Indian Ocean tsunami escaped almost unscathed as a result of the tsunami’s energy being sapped by a belt of coconut palms and mangroves. As an example, the village of Naluvedapathy in India's Tamil Nadu region suffered minimal harm and few deaths as the wave broke up on a forest of 80,244 trees planted along the coastline in 2002 in a bid to enter the Guinness Book of Records. It has been suggested by environmentalists that, tree planting along stretches of shoreline which are likely suffering from tsunami. While it would take some years for the trees to grow to a useful size, such plantations could offer a much cheaper and longer-lasting means of tsunami mitigation than the costly and environmentally destructive method of erecting artificial barriers and walls.

The recent development of real-time deep ocean tsunami detectors and tsunami inundation models has given coastal communities the instruments they need to decrease the future tsunami risks. If these instruments are used in conjunction with a continuing educational program at the community level, at least 25% of the fatal tsunami might be prevented. By contrasting the casualties from the 1993 Sea of Japan tsunami with that of the 1998 Papua New Guinea tsunami, it will be concluded that the mentioned instruments work. For the Aonae, Japan case about a tsunami that struck within 10 minutes of the earthquake, took just 15% of the people’s lives because they were mostly knowledgeable about tsunamis, even evacuation plans had been developed, and a warning was issued. For the Warapa, Papua New Guinea case about 40% of the population at risk were killed from a tsunami that arrived within 15 minutes of the earthquake because they were not aware of that, no evacuation plan was available, and there was no warning system.

Meteotsunami

A meteotsunami is a tsunami-like wave phenomenon of meteorological origin and they propagate in the water like tsunami and have the same coastal dynamics. What we mean is that both would be observed the same when they struck the shoreline. But they are only different in their origin. In other words a meteotsunami can be defined as an atmospherically generated large amplitude seiche oscillation.

The fundamental origin of these tsunami-like ocean waves are traveling air pressure disturbances, including those associated with atmospheric gravity waves, roll clouds, pressure jumps, frontal passages, and squalls, which normally generate barotropic ocean waves in the open ocean and amplify them near the coast through specific resonance mechanisms. In contrast to ‘ordinary’ impulse-type tsunami sources, a traveling atmospheric disturbance normally interacts with the ocean over a limited period of time (from several minutes to several hours).

All over the world these types of waves are common and better known by their local names such as: Rissaga (Spain), Milghuba (Malta), Marrubio (Italy), Abiki (Japan).