(1) 武藏野臺地西部はローム層の下の砂礫居に滯水して本水と呼ばれる地下水をなす。地下水面が低下する時,砂礫層に局部的に挾まれる薄い粘土層のある西北部では地下水は一部が殘存して宙水状の上部本水となる。この外ローム層粘土質化した下部層の所に局部的に湛水して宙水をなしてゐる所もある。東部では地下水は砂礫暦を充し盡し,ローム層下部の粘土層が稍厚い所ではローム層の中迄滯水する。砂礫層の下の厚い粘土層以深の諸帶水層に含まれる被壓水は少數の穿井によつてのみ取水されてゐる。
(2) 昭和13年春には著しく水位が低下し北部武藏野の深井特に上部本井戸は渇水したものが少くない。3種の地下水の地表下の深さ及び地下水面等高線の分布圖を作製した。地下水面の深さは宙水區を除き東部武藏野では5～15m,北部武藏野では15～25mに達する。
(3) 昭和13年6月28日～7月4日の600mmに及ぶ豪雨によつて地下水位の上昇が甚だ著しく時に地表に溢れ野水となつた。地下水位の上昇は3～12mに及び北武藏野に著しかつた。その爲中部及下部本水は連續して水深の大きい井戸となつた。野水は淺い排水の惡い谷頭や地形が平坦な所でも宙水地域に著しかつた。

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This study examines the interaction between the politics in Fussa City and the Yokota Air Force Base, that is “the politics of place, ” from a range of political, economic, and cultural processes which maintain the existence of the base.
Military bases are generally established for global geopolitical purposes. However, the establishment of a military base has cultural implications for the local communities where the base is located, i.e., increased concerns about crimes committed by seavicepersons and noise by aircrafts. Although these military bases have some serious impacts, especially in Japan, geographers have not yet examined the issues regarding a particular military base and the resultant politics in the city.
On the contrary, since the 1980s, Anglo-American political geographers have paid more attention to “the politics of place” This refers to the local politics that occur due to the interaction between a structural constraint and the individuality of a particular place.
Therefore, this study examines “the politics of place” on the Yokota Air Base in Fussa City, Tokyo, by using resources from the local newspapers, novels, magazine articles, and council proceedings.
The results are as follows : (1) Owing to the independence between the U.S. Air Force and local political and economic actors, an urban structure and local economy that depended on the Yokota Air Force Base were constructed in Fussa Town after the establishment of the base in 1945; (2) because of this structure, the local economy became to depend on Air Force personnel as consumers; (3) however, due to a shift to the floating exchanging rate and a reduction in the population of the base in the first half of the 1970s, there was a decrease in the influence that Air Force personnel had on the local economy; (4) since the 1980s, an economic agent utilized the “atmosphere” and “image” adjacent to the base to revitalize the local economy; (5) furthermore, the mass media represented Fussa City as a “base town” and conducted a review of the city in the 1960s, thus contributing to its revitalization; (6) during the economic slump in the 1970s, some local political agents were against the existence of the base. However, successive mayors of Fussa City have accepted the existence of the base, and utilized the subsidies it receives from the national government in order to construct the urban infrastructure.

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