In Shanghai the strain effect of ocean tide loads approached the direct effect of tide-generatingforce, and after correction of ocean tide loads the accuracy of calculation was distinctly improved.
Some new methods, included satellite thermal IR anomaly, earthquake cloud, double magnetic storm time method, the abnormal superimposition of tide-generatingforce resonance and so on, are introduced.
The results appeared that the ratio of modulation showed anomalous changes before some large earthquakes, which indicated that solid tide and tide-generatingforce have modulating and trigger actions.