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Volume 21 (1969)
- Issue 4 Pages 179-
- Issue 3 Pages 115-
- Issue 2 Pages 57-
- Issue 1 Pages 1-
Volume 21, Issue 4
Displaying 1-12 of 12 articles from this issue
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Tatsuo WAKO1969 Volume 21 Issue 4 Pages 179-184
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSCoastal-terrace studies have mainly been in the line corresponding to Strath terraces by A. D. Howard (1951) who discussed on the types of river terraces. The present author reports on the three peculiar exmaples of coastal terrace deposits from Northeast Japan, and reviews the relation between terrace deposits and its forms including similar land forms of non-marine origin.
1. When the matrix of terrace gravels is deficient, the preservation of deposits is bad due to the weakness of diagnosis. This influences the weathering conditions of gravels as well.
2. As a result, certain coastal terraces resemble to erosion surfaces of subaerial origin.
3. Sometimes terrace deposits consist of breocia which must be distinguished from the materials originated from talus or other subaerial processes.
4. When the terrace deposits show the marine to fluival sequence, the cause of the occurrence is to be examined. Of course, the surface form does not indicate the strand line.
5. It is expected that the coastal terrace of Filltop type by Howard bears the trace of regressive overlapping.
6. In the study of coastal gentle slopes the combination of items mentioned above are to be considered.View full abstractDownload PDF (1084K) -
in the case of 46 cities in Tohoku DistrictHiroshi YOSHIDA1969 Volume 21 Issue 4 Pages 185-190
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSIn this paper, the writer analysed the accumulative structure of the branch offices of companies in the cities based on the Establishment Census taken on July I, 1963. The subject of investigation is 46 cities in Tohoku district.
In the number of the branch offices, Sendai is far ahead of other cities and is different in quality, too. Next, there are many branch offices in the sites of prefectural offices or the cities which have high centrality. However, It is not always in proportion with the population. The industrial structure in head establishments differs in relation with the urban scale. Concerning small cities the proportion of finance and insurance increases. Investigating the sites of the head offices of the branches, the writer found that high proportion of them are in Tokyo or in the sites of prefectural offices. Sendai, as a regional capital city, shows low proportion except the head offices of companies within Miyagi or in contiguous Iwate prefectures. In general, the sites of prefectural offices including Sendai, occupies high proportion of the head establishments of companies outside the prefecture located mainly in Tokyo or Osaka, but in small cities increases the proportion of the head offices in sites of prefectural offices or neighboring cities. But the relation between the accumulative quantity of the branch offices and the influence to other cities is not clear.View full abstractDownload PDF (1186K) -
Part of Iwate PrefectureTakashi ABE, Yamato KASAI, Tadashi SUGIURA, Yasush MOTOKI1969 Volume 21 Issue 4 Pages 191-197
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSA forest fire occurred under an abnormally dry condition and spread eastward in a form of surface fire or spot fire fanned by the strong west wind. As a result, 2100 ha of forestland and 23 houses were burned to ashes.
Precisely observing the burned district, authors observed that a resinous Pinus denisflora were mostly destroyed by the fire, and in striking contrast to this, the broad-leaved trees such a Fagus crenata, Castanea crenata, Quercus crispula, Acer mono received but slight destruction. Besides, especially when the strike of slope and the direction of the wind met at a right angle, the forest suffered heavy damage by the fire.
It is usual that “forest fires” exert heavy damages over local inhabitants depend on the forest. But, local inhabitants in this region have been accustomed to utilize national forests (burned area was 1200 ha) for a long time as the source of fuels and for cattle raising. And also, private forests (burned area 900 ha) mainly consisted of broad-leaved trees with a few useful trees planted artificially such as Pinus densiflora, were not exploited enough, partly because the local economy depended largely upon national forests, and partly because fuel industry has declined in recent years.
Judging from these reasons, authors concluded that the forest fire which took place in this region never had a wide influence on local economy.View full abstractDownload PDF (2365K) -
preliminary reportYuji SASAKI, Hajime MAKITA, Koya HOSOKAWA, Isao ISHIKAWA, Ritsu KIKUCH ...1969 Volume 21 Issue 4 Pages 198-202
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSThe authors observed the air temperature in and around the urban area in Sendai in the cold season (Oct.-Dec., 1968). The results of observations can be summarized as follows ;
1) The differences between the daily minimum air temperature in urban area and that in suburbs range 2.5 to 4.5°C. 2) Influenced by the prevailing wind, the relatively warmer area appeared in the leeward of the urban center (Fig. 2). 3) The distributions of warmer area and colder area in the forenoon (Fig. 4) and in the night (Fig. 3) are reversed. 4) In the air temperature distribution along the route (A-B-C-D in Fig. 1), a relatively warm-island appears in the urban area in the afternoon (Fig. 6-1) and it develops noticeably during the night (Fig. 6-2, 3). However, the area becomes an area of relatively low temperature after sunrise (Fig. 6-5, 6). 5) The phase of the diurnal variation of the air temperature is retarded in the urban center than in the suburbs (Fig, 7). 6) The facts above mentioned will be understood from the view point of thermal capacity of urban area.View full abstractDownload PDF (843K) -
Okierabu-jima and HiraodaiNoboru CHIDA1969 Volume 21 Issue 4 Pages 203-210
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSIn the present paper, the author's aim is to compare the karst area of Okierabu-jima with that of Hiraodai. Okierabu-jima is located in the southern part of Amami Islands and consists of raised coral limestone which is very permeable and porous. Hiraodai lies in the northern part of Kyushu main island. It is from 360 to 681 meters above sea level and is characterized by crystalline limestone which is very compact and highly jointed.
The author surveyed Doline, Karren and Limestone caves in the two areas. We can recognize the remarkable differences in the karst topography between Okierabu-jima and Hiraodai. He thinks that these differences are due to the nature of limestone and the condition of climate. In this case, he considers that me climatic conditions which characterize each climatic zone are the temperature and precipitation besides vegetation, soil (humus), groundwater etc.View full abstractDownload PDF (2311K) -
Hiroshi TABUCHI, Shigeharu UEDA1969 Volume 21 Issue 4 Pages 211-216
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSOn Mt. Gassan (1, 980m), the writers found earth mounds, turf- and stone-banked terraces, patterned grounds and fossil nivation ridges.
Earth mounds develop on the gentle crest rdiges to the north of Mt. Gassan, which are about 1, 900 meters above the sea level. They are 1.8-1.0 meters in diameters and 0.6-0.4 meters in height.
Turf-banked terraces and stone-banked terraces occupy considerable areas with altitudes approximately 1, 900-1, 600 meters above the sea level. Turf-banked terraces are characterized with vegetational mat on the terrace front and tread. Stone-banked terraces are covered with vegetational mat only on the terrace front.
Patterned grounds develop on the summit of Mt. Gassan and on the nivation hollows which are higher than 1, 600 meters above the sea level.
Fossil nivation rdiges develop on the gentle slope on the east side of Mt. Gassan 1, 650-1, 750 meters above the sea level. According to morphological and vegetational evidence, they are not being significantly accentuated at the present.View full abstractDownload PDF (2179K) -
Fumio YONECHI1969 Volume 21 Issue 4 Pages 217
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSThe fossil Periglacial phenomenon originated in the last glacial age, was found at the section of the terrace on the mountain side of Mt. Senohara. The deposits of this terrace (correlated to the obanazawa I surface) were measured by radiocarbon test to be those of ca. 30, 000 years before present.View full abstractDownload PDF (1998K) -
Norio OKUSHA1969 Volume 21 Issue 4 Pages 218
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSAt the northernfoot of Yokodake, which is 2, 060m above the sea level, there is a small lake, Kikko-Ike. A typical development of sorted polygon is seen there. Its order is 40-200cm.
Sorted polygon (photo) is also shaped at Kagamiga-Ike, a small lake to the east of Mt. Shirane, 1, 780m above the sea level. And its order is 70-130cm.
In each example of sorted polygon subsoil of the part shown inside the circle (*Fig) is well sorted. In the process of the formaton of these sorted polygon, supply of plenty of water and frequent freeze-thaw action has apparently played an important role.View full abstractDownload PDF (1700K) -
Ryuichi YOTSU1969 Volume 21 Issue 4 Pages 219
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSIn Ofunato city, he industrial area stands at the mouth of the Sakari-river and the woodwork manufacturing occupies the most favorable locality in the industrial area of this city.
However, only a plywood factory has been founded is the woodwork manufacturing area.
These characters are different from other woodwork manufacturing areas e.g. Ishinomaki and Akita, where woodwork industry estates are filled-in with establishments from outside the prefecture.View full abstractDownload PDF (201K) -
Hiroshi SHITARA1969 Volume 21 Issue 4 Pages 220
Published: 1969
Released on J-STAGE: November 30, 2010
JOURNAL FREE ACCESSDuring the “Baiu” season, cold and humid easterly wind locally called “Yamase” often prevails over Northeastern Japan. The distribution of frequency of cloudy weather (Fig. 1) or rainy weather (Fig. 2) under such a condition was obtained. Fig. 1 shows the area of cloudy weather extends from the east, and Fig. 2 shows that rainy weather often appears along the Pacific coast and Ou-and Kitakami mountain ranges. Both types of the distribution are influenced by the higher part (>750m) in Ou and Kitakami ranges.View full abstractDownload PDF (143K) -
1969 Volume 21 Issue 4 Pages 221-223
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSDownload PDF (678K) -
1969 Volume 21 Issue 4 Pages 223-228
Published: 1969
Released on J-STAGE: October 29, 2010
JOURNAL FREE ACCESSDownload PDF (1292K)
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