Today's Robots, Japan

The islands of Japan are located in a volcanic zone on the Pacific Ring of Fire. They are primarily the result of large oceanic movements occurring over hundreds of millions of years from the mid-Silurian to the Pleistocene as a result of the subduction of the Philippine Sea Plate beneath the continental Amurian Plate and Okinawa Plate to the south, and subduction of the Pacific Plate under the Okhotsk Plate to the north. Japan has 108 active volcanoes. Destructive earthquakes, often resulting in tsunamis, occur several times each century. The 1923 Tokyo earthquake killed over 140,000 people. The most recent major quakes are the 2004 Chūetsu earthquake and the Great Hanshin Earthquake of 1995. Hot springs are numerous and have been developed as resorts. Japan was originally attached to eastern coast of the Eurasian continent. The subducting plates, being deeper than the Eurasian plate, pulled Japan eastward, opening the Sea of Japan around 15 million years ago. The Strait of Tartary and the Korea Strait opened much later.
Climate
The climate of Japan is predominantly temperate, but varies greatly from north to south. Japan's geographical features divide it into six principal climatic zones: Hokkaido, Sea of Japan, Central Highland, Seto Inland Sea, Pacific Ocean, and Ryukyu Islands. The northernmost zone, Hokkaido, has a temperate climate with long, cold winters and cool summers. Precipitation is not heavy, but the islands usually develop deep snow banks in the winter. In the Sea of Japan zone on Honshū's west coast, the northwest wind in the wintertime brings heavy snowfall. In the summer, the region is cooler than the Pacific area, though it sometimes experiences extremely hot temperatures, because of the foehn wind phenomenon. The Central Highland is a typical inland climate, with large temperature differences between summer and winter, and between day and night. Precipitation is light. The mountains of the Chūgoku and Shikoku regions shelter the Seto Inland Sea from the seasonal winds, bringing mild weather throughout the year. The Pacific east coast experiences cold winters with little snowfall and hot, humid summers because of the southeast seasonal wind. The Ryukyu Islands have a subtropical climate, with warm winters and hot summers. Precipitation is very heavy, especially during the rainy season. Typhoons are common.