著者

岩瀬 昭雄

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.13, no.3, pp.253-260, 1997-07-01 (Released:2009-05-29)

参考文献数

12

著者

苫米地 司

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.14, no.2, pp.157-161, 1998-04-01 (Released:2009-05-29)

参考文献数

6

著者

田名瀬 寛之 和泉 聡 立川 弘

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.17, no.1, pp.49-53, 2001-01-01 (Released:2009-05-29)

参考文献数

1

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.20, no.5, pp.187-204, 2004

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.15, no.4, pp.103-114, 1999

著者

早川 真 佐倉 勇

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.12, no.3, pp.234-238, 1996-07-01 (Released:2009-05-29)

参考文献数

2

被引用文献数

1 1

著者

二階堂 稔

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.15, no.2, pp.117-120, 1999-04-01 (Released:2009-05-29)

参考文献数

4

著者

田村 伸夫

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.4, no.1, pp.3-24, 1988-03-01 (Released:2009-05-29)

参考文献数

28

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The purpose of this paper is to explain the distinctive features of the maximum snow depths in NIIGATA prefecture. The maximum snow depth data for the 'cold half' years from 1891 to 1987 were collected from the NIIGATA Local Meteorogical Observatory. The number of observatories keeping data is 60.Concluding remarks are as follows :(1) The deepest disturibution of maximum snow depth is determined by the difference in the height of the eastside or southside mountain chains. (Figs.1, 2, 3, 4)(2) The shallowest disturibution of maximum snow depth is closely proportional to the height of each observatory. (Figs.1, 5)(3) The heavy snow's patterns in NIIGATA prefecture are classified into two types : 1945 yr. and 1963yr. (Figs.6, 7, 8, 9)(4) The upper limit of maximum snow depth which is estimated relative to an observatoty's height is shown by the following formula. (The upper limit line is designated "N-Line", Fig.10)Hs=200 logH+75Hs : the upper limit of maximum snow depth (cm)H : the height of the observatory (m)However, the maximum snow depths of two observatories, TAKADA and TOCHIOMATA, were over the N-Line.(5) Taking into account the changes in the maximum snow depths after the latter term of the Meiji era, there seems to be two cycles of snowfalls : a cycle where there is a relatively little snowfall followed by a period of heavy snowfall and then repeating. (Fig.11)(6) In the UONUMA area which has a heavy snowfall for NIIGATA prefecture, there are cycles of mild winters from 5-8 years. All mild winters are not the same as in El Nino years, but there is a possibility that a big El Nino brings a mild to average winter (relatively mild snowfall) to the UONUMA area. (Fig. 12)

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.12, no.4, pp.294-312, 1996-10-01 (Released:2009-05-29)

著者

岩崎 茂雄

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.18, no.2, pp.137-141, 2002-04-01 (Released:2009-05-29)

参考文献数

8

著者

東山 禎夫 向瀬 慎一 浅野 和俊

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.14, no.1, pp.16-25, 1998-01-01 (Released:2009-05-29)

参考文献数

9

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A removal method of snow accumulated on a photovoltaic (PV) array installed at a pantiled roof was examined using a model house in 1994/1995 winter season. The photovoltaic array with a rate of 1kW consists of ten PV panels and each panel was individually heated by injecting do current from a dc power supply. The roof surface around the array was covered with the electrically-heated roof tiles. When snow slides down from the panels and the temperature at the under surface of the panel rises to 3 degrees, the heating circuit automatically turns off and the system for generating electric power turns on. Snow on the photovoltaic array and the pantiled roof usually slides down within 3 to 4 hours after heating. The snow sliding system works effectively in assistance of sunshine. After snow sliding, the photovoltaic array can generate electricity in a sunny day, although the gained energy is less than whole energy to snow removal. Since the generated power is considerably reduced owing to the existence of a little snow lump on the array, snow should be removed clearly.

著者

長谷川 寿夫

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.20, no.2, pp.158-161, 2004-04-01 (Released:2009-05-29)

参考文献数

1

著者

石沢 賢二

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.17, no.4, pp.349-351, 2001-10-01 (Released:2009-05-29)

著者

清水 浩志郎 木村 一裕 吉田 謙一 伊藤 千代治

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 (ISSN:09133526)

巻号頁・発行日

vol.10, no.2, pp.98-106, 1994-04-01 (Released:2009-05-29)

参考文献数

6

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Diffusion of studlesstires have almost completed in cold region in the winter of 1992. In proportion as studlesstires are come into wide use, road surface become slippery. And characteristics of winter traffic accidents are changing, as shown in the increase of slip accidents. For prevention of winter traffic accidents, of course, thoroughgoing countermeasures to road surface management are firstly neened. Furthermore it is necessary to improve road alignment to meet the changes of those characteristics. Also revising drivers' safety consciousness is needed to make up for countermeasures to road surfacemanagement in the circumstance when those countermeasures are still insufficient. This paper discusses countermeasures to road surface managements and road alignment and problems of drivers' sefety conciousness from analyses of characteristics of winter traffic accidents.

著者

本間 弘達 媚山 政良 岸浪 絋機 野田 恒 伊東 宏城 伊藤 親臣

出版者

Japan Society for Snow Engineering

雑誌

日本雪工学会誌 : journal of snow engineering (ISSN:09133526)

巻号頁・発行日

vol.23, no.1, pp.23-33, 2007-01-01

被引用文献数

1 2

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Recently, a large number of air-conditioning system that uses the snow as cold energy source (snow cooling system) has been increasing due to the environmental emerging that is represented by the global warming. While the reducing of the operational cost of this system is advanced, there is a demand for a simple cooling system that can be used in the necessary places where the snow mound is available to supply the cold energy source. Therefore, we have been starting the research and development of a movable package type of snow air-conditioning system since 2001.<br>Based on how to gain the cold energy from snow, the snow cooling system can be divided into two types: Air circulation type and Cold-water circulation type. In this paper, we report an experimental research and development of a cold-water circulation shower type of the snow cooling system.