The results suggest that New Zealand can expect a tsunami of 16.4 feet (5 m) approximately every 77 years, with a wave of at least 49.2 feet (15 m) approximately every 580 years. Tsunamis over 3.3 Earthquakes generally occur on three types of faults: normal, strike-slip, and reverse (or thrust). Tsunamis can be generated by earthquakes on all of these faults, but most tsunamis, and the largest, result from earthquakes on reverse faults. A classic tsunami wave occurs when the tectonic plates beneath the ocean slip during an earthquake. The physical shift of the plates force water up and above the average sea level by a few meters. This then gets transferred into horizontal energy across the ocean's surface. From a single tectonic plate slip, waves radiate outwards in all Tsunami Types. There are three (3) broad types of tsunamis: Local Tsunami. This is a tsunami where its destructive effects are experienced on coasts within 100 km from the source of the tsunami. In such cases, the travel timefor the tsunami is generally less than one (1) hour. The most common cause of a tsunami is sea floor uplift associated with an earthquake. Tsunamis are also triggered by landslides into or under the water surface, and can be generated by volcanic activity and meteorite impacts. Tsunamis range in size from inches to over a hundred feet. Moreover, there are three types of tsunamis based on the scene of the disaster: local, regional and remote. Local tsunamis Here, tsunami waves can reach up to 100 km from the source of origin in less than one hour. .

2 types of tsunami