%0 Journal Article %T Earthquake, Volcano and Earth Rotation Harmonics %A Sheng Zhao %J Open Journal of Earthquake Research %P 139-158 %@ 2169-9631 %D 2023 %I Scientific Research Publishing %R 10.4236/ojer.2023.123005 %X Earthquake prediction is considered impossible for there is no scientific way to find the date and time, the location, and the magnitude of an earthquake. A new idea is introduced in this paper¡ªearth rotation harmonics triggered natural volcano and earthquake. With earth rotation harmonics response model for a location, it could be possible to calculate the earthquake date and time, and the magnitude. Properties of earth rotation harmonics triggered earthquake are discussed and verified with earthquake data from USGS website. Also, both earth tide and ocean tide effects on earthquake are discussed and verified with earthquake data¡ªtides did not trigger the natural earthquake, they only affect the earthquake activities and time. %K Earthquake %K Volcano %K Prediction and Forecast %K Tidal Effects %K Earth Rotation Harmonics %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=127119