One example of a teletsunami was caused by the 1964 event also known as what holiday-themed occurrence?
Teletsunami A teletsunami (also called an ocean-wide tsunami, distant tsunami, distant-source tsunami, far-field tsunami, or trans-ocean tsunami) is a tsunami that originates from a distant source, defined as more than 1,000 km away or three hours' travel from the area of interest, sometimes travelling across an ocean. All teletsunamis have been generated by major earthquakes such as the 1755 Lisbon earthquake, 1960 Valdivia earthquake, 1964 Alaska earthquake, and 2004 Indian Ocean earthquake.
1958 Lituya Bay megatsunami The 1958 Lituya Bay megatsunami occurred on , following an earthquake with a moment magnitude of 7.8 and a maximum Mercalli intensity of XI ("Extreme"). The earthquake took place on the Fairweather Fault and triggered a rockslide of 30 million cubic metres (40 million cubic yards, and about 90 million tons) to fall from several hundred metres into the narrow inlet of Lituya Bay, Alaska. The impact was heard 50 mi away, and the sudden displacement of water resulted in a megatsunami that washed out trees to a maximum altitude of 520 m at the entrance of Gilbert Inlet. This is the most significant megatsunami and the largest known in modern times. The event forced a re-evaluation of large wave events, and recognition of impact, rockfall and landslide events as a previously unknown cause of very large waves.