抄録
The characteristic features of the lowlacd in Hokkaido are as follows:
A. Parallel ridged coastal lowland:
There are rolling parallel ridges which run parallel or Nave trends with low angle to shore line. The zone of such ridges is several kilotmeter wide, with peaty fields in the depressions, often accompanied by sand dunes. Such lowlands are. named the parallell ridged coastal lowlands by the author. Their width is larger than Their width. is lartier than their height in gezaeral. But iaa the lowland along the Okhtsk sea their, height is much larger tlian their width. Their surfaces are protected from wind or rain wash erosion by forests and humus cover, and by volcanic materials in the southern volcanic reions. They are constructed by sands and in some special cases by graveIs. Primary forms of such lowlands may be developed by wave action at the shallow sea bottom. The typical exaliiples of such lowlands are found in following location; Yufutsu, Iwauai, Teshio, Yoichi, Suttsu etc.
B. Coastal plains without parallel ridges:
The coastal plains without. parallell ridge are found along tie Japan Sea and in South Hokkaido. In these cases, sea cliffs face directly to sea.
We can use the types of, such coastal plains and other minor land forms together with their materials connected with the wave agency, as the indices of the sea level changes in the alluvial age.
The author described the lowland topography of Ishikar, Notstake, Yufutsu acid Embetsu, respectively, and concluded the differential earth movement in the alluvial age from their features.
