CAUSES AND TYPES OF TSUNAMI Introduction. The term Tsunami has been derived from a Japanese term Tsu meaning 'harbor' and nami meaning 'waves'. Types of Tsunami. A tidal wave tsunami is a type of tsunami caused by the gravitational pull of the moon and sun on the Causes of Tsunami. A Tsunami can Essentially, they are dynamically equivalent to seismic tsunamis, the only differences being 1) that meteotsunamis lack the transoceanic reach of significant seismic tsunamis, and 2) that the force that displaces the water is sustained over some length of time such that meteotsunamis cannot be modelled as having been caused instantaneously. The tsunami on Jan. 15 hit Santa Cruz, California, 12 hours and 12 minutes after the initial eruption in Tonga. Santa Cruz is 5,280 miles (8,528 kilometers) from Tonga, which means that the 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. All Types of Tsunamis Local Tsunami. A local tsunami is a tsunami that causes damage in relatively close proximity to the tsunami-causing Regional Tsunami. A regional tsunami is one that causes damage from 100 km to 1,000 km from the underwater event that Distant Tsunami. A distant tsunami, A tsunami is not a single wave but a series of waves, also known as a wave train. The first wave in a tsunami is not necessarily the most destructive. Tsunamis are not tidal waves. Tsunami waves Sc86. 27 409 347 485 143 314 145 47 378

2 types of tsunami