抄録
The surface forms of hill land such as the Nanakita Hills in the north of Sendai and the Aobayama Hills in the west, and recently the Tomiya Hills further to the north have been under the process of transformation by human activity mainly on the purpose to make residential areas. In this paper the author tried to investigate the changes from initial hill surfaces to transformed ones, concerning drainage patterns, reliefs and so on.
Needless to say, the ridges of hills were cut and valleys were filled in the areas (Fig. 5). The surface drainage in the former surfaces either vanished or were simplified. The relief of initial hills were, in general, lessened. However there are some varieties in changes of reliefs, i. e. strong in the Nanakita Hills, especially in the eastern part, and weak in the Aobayama Hills (Table). Such variations may be connection with the extents of individual constructed areas. An area of vast extent the outline of initial reliefs is not to be observed clearly, while in an area of small extent, the initial reliefs are better preserved because the range of earth mass removed is limited in such an area.
When there are several housing projects, neighboring one another, there are discontinuities of surface forms among them. Such discontinuities are the results of different sizes of the projects, differences in initial forms, and changes in the engineering techniques.
