关键词: 万有引力常数, 中国, 地震

Abstract: Earthquakes are devastating natural disasters: no place on Earth experiences them to a greater extent than China and the East Asian seaboard. Similarly drought, floods and other climatic hazards are frequent events around the World. A theory is developed here to link these two geophysical phenomena.During the early 1980' s a deterministic analytical model of climate variation was developed. It matches proxy palaeoclimatic time series and can also be used for forecasting; it has been successfully tested for several years. Earlier substantiation of the model over geological timescales is here extended through recent history. An explanation of the cause of climate change is then suggested based on the possibility that the Universal Gravitational Constant (G) may vary with time. Variation of G implies simultaneous variation of both tectonic activity, such as earthquakes, and climatic properties; such as the global temperature represented by the model. The model therefore also holds promise for earthquake forecasting.A theory is proposed to explain the alternation of earthquake activity between different areas over a period of time. This is tested in hindcast for the many twentieth century earthquakes of Magnitude 6 or greater on the Richter scale in China. Within the limitations of the accuracy of small scale topographic mapping and suspected insensitivity of epicentre location, the results are most encouraging.

Key words: Universal gravitation constant, Earthquake, China