Abstract: Whether the 1604 Quanzhou offshore earthquake generated tsunami is a contentious problem. Through the textual research and analysis of historic earthquake records, we conclude that Quanzhou offshore large earthquake did not cause obvious tsunami disaster. By analyzing related historic material and Taiwan Strait seismic structure, we determine the potential earthquake-tsunami source zones and their parameters, and make numerical simulation on the earthquake-tsunami source zones of Quanzhou offshore and Taiwan Strait southern shoal. In the numerical simulation process, we use the tsunami wave data of the 1994 Taiwan Strait earthquake to test the reliability of numerical model and routine. Based on Quanzhou offshore earthquake-tsunami zone and its parameters, the numerical simulation results show that the increase or decrease of water in Quanzhou bay induced by earthquake-tsunami waves cannot produce hazard effects. Our research supplies new evidence supporting that there was no tsunami hazard of the 1604 Quanzhou offshore large earthquake.

Key words: Earthquake-tsunami, Taiwan Strait seashore fault, Quanzhou offshore large earthquake, Tsunami numerical simulation