Climate and Topography 

Climate:-
Tokyo's climate is influenced by the mountains and by the sea. It is a type of climate that can be described as humid sub- tropical; in many respects  it resembles that of coastal locations in the southeastern United States. There is a clear distinction between the seasons. Summers are hot, humid and generally uncomfortable. Each year there is a month long rainy season called baiu or plum rain from the middle of June to July. This is characterized by sticky weather with the city being invaded by bugs and insects. Winters are cool, although only a few days have temperatures below freezing. Clear sunny weather prevails with little or no snow. The Spring is characterized by pleasant weather and the fall by occasional typhoons which bring heavy rain and widespread flooding. Here is a link for the current weather update.

 


Topography:-
The Kanto Plain covers parts of 7 of Japan's 47 prefectures, and measures approximately 13,000 square kilometers. It extends from the coasts of Irabaki and Chiba prefectures in the east for well over 100 kilometers, and Tokyo Bay to the mountains in the north. The 23-ward portion of Tokyo occupies the southern part of this area, at the head of Tokyo Bay. The city's suburbs sprawl in all the landward directions, but especially to the west, in the Tama area and adjacent parts of the Kanagawa prefecture, where urban development abuts the Kanto Mountains and other highlands. The Northern part of the plain is heavily agricultural, but urban growth is making rapid development there as well.
 

Regional Map of  Japan



Earthquake Hazards:-
Tokyo is at an extremely active earthquake zone and often undergoes subterranean tremors. This is true for most of Japan as it rests on three tectonic plate (theedge of the Eurasian and Pacific and Philippine plates) come into contact creating sporadic earth movements; but Tokyo is an especially dangerous site because of its proximity to the most violent lines. A second factor that makes Tokyo especially vulnerable to major earthquakes in addition to lying on the fault lines, most of the downtown, most waterfront industrial areas and many crowded residential areas, are built on loosely consolidated landfill. During an earthquake, this land could mix with underground water and cause the buildings to collapse.
 
                  
                Images of devastation from the Great Kanto earthquake that struck on September 1, 1923


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