Quick Facts About Leaf River. The unemployment rate in Leaf River is 5.40 percent(U.S. avg. is 5.20%). Recent job growth is Positive. Leaf River jobs have Increased by 1.48 percent. Compared to the rest of the country, Leaf River's cost of living is 19.90% Lower than the U.S. average. As of 2014, Leaf River's population is 418 people. Since 2000, it has had a population growth of -23.44 percent.
Tsunamis are generated by abrupt massive movements (changes) in the sea floor. An eruption of a volcano in or adjacent to the sea may be accompanied by earthquakes, and an earthquake may move the sea floor sufficiently to generate a tsunami. A second possible way for a volcano to create a tsunami might be due to a landslide from the side of a volcano. Such a mass movement of material into the sea would also displace water, and could generate a tsunami. Additionally, sometimes volcanoes explode violently, and that mass movement of material could also create a tsunami.
Earthquakes. Earthquakes cause tsunamis by causing a disturbance of the seafloor. Thus, earthquakes that occur along coastlines or anywhere beneath the oceans can generate tsunamis. The size of the tsunami is usually related to the size of the earthquake, with larger tsunamis generated by larger earthquakes. Wave velocity is the speed of the wave. 2  Velocities of normal ocean waves are about 90 km/hr while tsunamis have velocities up to 950 km/hr (about as fast as jet airplanes), and thus move much more rapidly across ocean basins. 3  The velocity of any wave is equal to the wavelength divided by the wave period.