地理学評論
Online ISSN : 2185-1719
Print ISSN : 0016-7444
ISSN-L : 0016-7444
8 巻, 1 号
選択された号の論文の9件中1~9を表示しています
  • 佐々倉 航三
    1932 年 8 巻 1 号 p. 1-11
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
    Since I investigated the air temperature difference between the city of Tokyo and its suburb in No. 7, Vol. 7 1931 of this journal, I have been willing to research the diurnal variation of the distribution of air temperature in a certain town and its vicinity. This summer, in my staying at Ômati, Nagano Prefecture, I tried to make the microclimatic observations of air temperatures, driving an authomobile in and around the town and observing air temperatures with the whirling thermometer, which was sheltered with plated metal for the purpose of preventing from the direct sunshine. The town of Ômati (some 720m above the sea) is situated at the eastern foot of the Japanese Northern Alps, rising to the sky in the northwestern border of Nagano Prefecture, and this town has its population of about ten thousands. Fig. 3 and 4 show the distributions of air temperatures at 5 a.m. and at 2 p.m. of August 22nd, 1931 respectively aud Fig. 5 represents that 11 p.m. of August 23rd, 1931. Fig. 6 is the map, showing the distribution of the isotherms of the equal ranges, comparing the temperatures of 5 a.m. with that of 2 p.m. of the day, August 22nd, 1931. From these maps we can understand that the cultural landscape has much to do with forming the microclimate as well as the natural landscape. The effect of the distribution of air temperature in such a restricted district may be unnecessary to the study in pure meteorology, but I believe that this kind of research is absolutely necessary from the agricultural and hygienic points of view.
  • 海岸段丘に關する二三の事實(豫報)-地形學的研究
    今村 學郎, 福井 英一郎
    1932 年 8 巻 1 号 p. 12-23
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
    Yaku Sima, which is a small, round island, is situated at 130° 30' E, 30° 20' N, to the south of Kyûsyû, Japan. The island is composed almost entirely of granite, but along its northeastern margin some sedimentary Mesozoic formations of undetermined age are also met with (see the maps). The topography is chiefly characterised by a continuous and fully developed erosion surface of considerable size, which extends along the coast (See plate, fig. 1 & 2). As the surface is confined, within the investigated region, to the area of Mesozoic rock, we naturally find everywhere gravels of this rock; but we also find large gravels of granite, which must doubtlessly have been derived from the old land behind. This fact alone seems to prove that this surface is very far from what is called “Piedmont Fläche”, as is occasionally suggested by some Japanese geologists. Moreover, upon this surface, there are also found large pumices of more than 80 centimetres in diameter in the best state of preservation. Now, the nearest volcanic island is Kutino Erabu, but, as the distance is at least 30 kilometres, it is almost impossible to imagine that these pumices were transported by volcanic activity through the air. We must think, therefore, that they were brought by means of the sea water, and that, consequently, a part of this erosion surface was once covered by the sea. From these things, we can conclude that this surface is nothing but a real marine abrasion surface.
    The nature and origin of this surface having so far been made clear, we have here another confirmation of what was suggested elsewhere(1), namely, of the mode of crustal movement in this island going on since the formation of this terrace.
    The conclusions follow:
    1. That the erosion surface, which almost encircles Yaku Sima, is not a fluviatile “Piedmont Fläche” but of real marine abrasion origin.
    2. That though the main deformation is in the form of warping, some faultings have also occurred as an accessory phenomenon.
    3. That Since the formation of the terrace the earth crust has been uplifting, more intensely towards the old land.
    4. That there is a greater probability to find marine shells and sediments upon other erosion surfaces of Japan, many of which, though they have hitherto been supposed to be of subareal denudation, will be explained by marine abrasion.
  • 椙山 正英
    1932 年 8 巻 1 号 p. 24-37
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
    Nearly one year ago the present author published the results of the study concerning the evenness of the elevated peneplain of the province of Mikawa in Japan(1). Tyûgoku Peneplain in southwestern Japan has also been studied from the same standpoint, although the result is not yet in print(2).
    In the present work another attempt is made to show the same sort of examples of the cuntinetal part of far eastern Asia. The area chosen is the Kwantung (_??__??_) Region, the southern tip of the Liantun (_??__??_) Peninsula, where maps of high exactness are obtainable.
    64 topographical sheets (1:25000) have been published by the Kwantung Government, and out of them 12 sheets, which represent the most typical areas, were selected for this study. Evenness was measured with the same method, which was once adopted to determine the evenness of the Mikawa Plateau
    Evenness E is defined as
    _??_
    where R is the altitude difference in meter between the highest and the lowest points within a circle of 1 spuare kilometer. The center of the circle is chosen at the point of a corner of a mesh with one side 500 meters in length.
    As many as 3241 points are measured. The results are shown in Table 2, and for the whole area E=38.5. This is an extraordinarily large value, when we consider that the evenness of the elevated peneplains in Japan gives below E=10.
    If we calculate the frequency of the value of evenness, E=40 gives maximum value as shown in Fig.1: that is to say, 410 cases out of 3241. E=50 is next to the largest frequency. The curves in the Figures 2-13 show the frequency of E in the respective sheets. From these we find that a portion of the curve with high frequency may be regarded as symmetric.
    Comparing the curves with the major physiographic features of the area represented, we find that a portion of high freuency in the curves represents the area of well developed peneplain, and that the remaining portion, which has but little frequency, doudtlessly indicates the existence of monadonocksa Fig. 14 is the map showing distribution of evenness, and the iso-evennessl ine of E=16.7 is drawn with specially thick line, because this line is considered to be the boundary between the peneplain and the monadonocks.
    After all, the most provable value of evenness is 40, but on the average it is reduced to 38.05 on account of the existence monadonocks.
  • 佐々木 彦一郎
    1932 年 8 巻 1 号 p. 38-47
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
    1. Numerous islands scattering in “Setouchi” or inland sea present many facinating problems in terms of land utilization.
    2. The necessity of providing cheap grass fertiliser to agricultural islands induces the utilization of many islands exclusively for the cultivation of grass.
    3. The irregularity of roads pattern as well as the sectional limitation of the extension of roads are explained by the sectional isolation of the economic entity due to the irregular relief of the islands.
    4. Small islands adjacent to the mother island have no permanent habitation provided the shortness of the distance enables the easy access by boat.
    5. The lack and the existence of permanent habitation in small islands may be often explained by the relation of the seasonal demand of labor power. For while some of the islands that are exclusively utilized for paddy fields have no settlement, those for day farm have permanent dwellers without exceptien.
    6. Most of the small islands are, contraty to the general expectation, primarily agricultural, and fishing is carried on merely as a subsidiary business. Thus the existence of arable land is the vital factor for the dwellers of the islands.
    7. Farms are reached rather by boat than on foot. Thus each island has always some landing ports, although occassionally lacks in road. The farms are distributed in a most profused manner, as the location is mainly determined by the easy accessibility by boat.
    8. Each island though uninhabited or without farm land, has a shrine without exception. “Benten” the sea goddess, is enshrined here. Shrines which are surrounded by sacred forests, are located at the tip of the promontries, whic, before the introudction of the light house, served as the important marks for the sea going vessels.
  • 山岸 忠夫
    1932 年 8 巻 1 号 p. 48-58
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
    Thirty main hot springs are found in the vicinity of Mine-Onsen. The area under discussion is situated along the northern part of the Kawazu River. The river valley is presumably a fault origin.
    These hot springs, issued from the alluvial sand and the Tertiary Formation, are arranged along several lines running in directions of nearly NNW-SSE and WNW-ESE. The directions coincide with that of the fissures in the agglomerate, andesite tuff or liparite fuff which belongs to the Tertiary Formation.
    Moreover, partaining to the hot springs near Rendaizi in the southern part of the district, their distribution are influeced by the fissures that run nearly in the same direction as those of the northern part of this district.
    Next, the location of rice-field on the mounntain slope is determined by the existence of springs from which irrigation water is available. These springs are also arranged along the fissures above-mentioned.
    Therefore, it is possible to say the tectonic structures are playing one of the most important rolls for the human activities of this region.
  • 1932 年 8 巻 1 号 p. 59-68,78
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
  • 戸田 秀雄
    1932 年 8 巻 1 号 p. 69-72
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
  • 井上 修次
    1932 年 8 巻 1 号 p. 72-75
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
  • 藤裔 常行
    1932 年 8 巻 1 号 p. 75-78
    発行日: 1932/01/01
    公開日: 2008/12/24
    ジャーナル フリー
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