Core Points - An 8.8 magnitude earthquake occurred off the eastern coast of Kamchatka on July 30, triggering a tsunami that affected multiple countries along the Pacific coast [1][3] - The tsunami's impact on China's eastern coastline has been lifted, with no significant tsunami waves observed [3] - The tsunami waves reached areas such as Chile and New Zealand, concluding their propagation across the Pacific [3] Tsunami Characteristics - The earthquake released a significant amount of energy, being located in the Pacific Ring of Fire, an area known for its seismic activity [3] - Historical context shows that the region has experienced large tsunamis before, such as the 9.0 magnitude earthquake in 1952 [3] - The maximum tsunami waves were observed near the Kamchatka sea area, with higher waves expected in the eastern Pacific regions like Hawaii [3] Tsunami Warning System - China has a national standard for tsunami warnings, categorized into red, orange, and yellow alerts based on wave height [5] - A red alert is issued for expected waves over 3 meters, orange for 1-3 meters, and yellow for 0.3-1 meter [5] - It is advised to evacuate the coastline immediately upon any tsunami warning, regardless of the alert level [5] Historical Context and Trends - The deadliest tsunami recorded occurred in 2004 in Indonesia, with a magnitude of 9.0, generating more energy than the recent event [6] - Approximately 80% of tsunamis occur in the Pacific Ocean, with the remainder in other regions like the Indian Ocean and Mediterranean [6] - There is currently no evidence suggesting an increase in the frequency of earthquake-induced tsunamis in recent years [6]