Why are there so few earthquakes in Australia?

Australia is located in the middle of the Indian Ocean plate, with weak plate movement, stable crust and few earthquakes.

I. Geographical location of Australia:

Australia is the sixth largest country in the global land area in the southern hemisphere, located between the South Pacific and the Indian Ocean, and is composed of islands and overseas territories such as Australia and Tasmania. It borders the Coral Sea and tasman sea in the Pacific Ocean in the east, and the Indian Ocean and its marginal seas in the west, north and south, with a coastline of about 36,700 kilometers. It covers an area of 7.692 million square kilometers, accounting for the vast majority of Oceania. Although surrounded by water, deserts and semi-deserts account for 35% of the country's area. The whole country is divided into three areas: the eastern mountainous area, the central plain and the western plateau. The highest mountain in China, Kosciusko, is 2230 meters high, and the longest river, Melbourne River, is 3490 miles long. On the east coast, there is the Great Barrier Reef, the largest coral reef in the world. The north is tropical, and most of it belongs to temperate zone. The annual average temperature in the north is 27℃, and that in the south is 65438 04℃. The inland areas are dry and lack of rain, with annual precipitation less than 200mm, and the eastern mountainous areas are 500- 1200mm.

Second, the cause of the earthquake:

The cause of earthquake is an important subject in seismology. At present, there are continental drift theory and submarine expansion theory. What is more popular now is the generally accepted theory of plate tectonics. 1965, the famous Canadian geophysicist Wilson first put forward the concept of "plate". 1968, the French divided the global lithosphere into six plates, namely Eurasia, Pacific Ocean, America, Indian Ocean, Africa and Antarctica. The junction of plates is an area with active crustal activity and concentrated volcanoes and earthquakes. Plate theory is the synthesis and extension of continental drift and submarine expansion. Although it can't solve all the problems of crustal movement, it lays a foundation for the theoretical study of earthquake genesis.

Therefore, Australia is located in the middle of the Indian Ocean plate, not at the junction of the plates, so it is not prone to earthquakes. )