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  • 長島 康雄, 西城 光洋, 太田 健治, 若生 勝
    仙台市科学館研究報告
    2012年 21 巻 73-77
    発行日: 2012年
    公開日: 2021/09/20
    研究報告書・技術報告書 フリー
    仙台管区気象台
    と仙台市科学館が連携して,2011年東北地方太平洋沖地震を理解するための地震を学ぶためのワークシートを作成した。
  • 内海 徳太郎
    農業気象
    1954年 9 巻 2 号 77-78
    発行日: 1954/03/10
    公開日: 2010/02/25
    ジャーナル フリー
  • 渡辺 偉夫
    航海
    1985年 83 巻 9-13
    発行日: 1985/03/15
    公開日: 2017/07/12
    研究報告書・技術報告書 フリー
  • 渡辺 偉夫
    航海
    1985年 83 巻 2-8
    発行日: 1985/03/15
    公開日: 2017/07/12
    研究報告書・技術報告書 フリー
  • 山岸 米二郎
    水文・水資源学会誌
    1992年 5 巻 4 号 46-52
    発行日: 1992/12/01
    公開日: 2009/07/23
    ジャーナル フリー
  • 遠藤 匡俊
    東北地理
    1984年 36 巻 2 号 136
    発行日: 1984/06/25
    公開日: 2010/04/30
    ジャーナル フリー
  • 山地積雪と融雪季流出率について
    林 弘宣, 佐藤 晃三
    農業土木研究. 別冊
    1964年 1964 巻 8 号 14-21
    発行日: 1964年
    公開日: 2011/08/11
    ジャーナル フリー
    The snow survey and the investigation of snowmelt runoff were carried out in the basin (of an area of 28.3 km2) of the Tsukari, a branch of the Hira-Kawa, Aomori prefecture, during the winter of 1955-1961.
    The paper presents the full analysis of geographic distribution and time variation of the snow cover and the runoff ratio in the melting season.
    The analysis are summarized as follows:
    (1) During the melting season, the equivalent water of snow increases with increasing latitude, and the relation is approximated in the good accuracy by the expression of linear function, as shown in Fig.2. A similaf latitudinal variation is discernible to the snow depth.
    (2) The mean decrease of the equivalent water of snow at several latitudes on the basin, during the melting season, can be expressed by the following equations:
    d<16 days...E=22.0-0.50d+ (0.043+0.002d) h
    16<d<60 days...E=44.7-1.92d+ (0.043+0.002d) h
    where d is days from the beginning of spring thaw, E is equivalent water of snow and h is latitude.
    (3) The frequncy distribution of the snow density measured at several points over the basin throughout the melting season are normal as shown in Fig.4, and 95 percent of the density falls within a range of ± 0.15 about the mean density of 0.38. After the beginning of melting, the average density over the basin increases approximately at the rate of 0.04 per 10 days.
    (4)The average depth of equivalent water of snow over the basin is represented considerably by the equivalent water of snow observed in the central part of the basin near its median elevation.
    (5) The runoff ratio to the whole melting season (from the beginning of the melting to the time when the snow cover disappeared over the basin) changes between 0.50-0.80 every year, and it average value is 0.60±0.14.
    (6)The ratio of the short period runoff (about 20 days) ranges between 0.30-0.95 during the melting season. One of the factors determining the ratio of the short period runoff is the ratio (D) of the no snow-cover area to the whole area. The average short period runoff ratio takes following values depending upon the values of D:
    D<50 percent...0.69+0.11
    D>50 percent...0.47+0.15
  • 野澤 壽一, 植松 康, 佐々木 和彦, 鈴谷 二郎, 田代 侃
    日本建築学会技術報告集
    1999年 5 巻 9 号 57-60
    発行日: 1999/12/20
    公開日: 2017/01/25
    ジャーナル フリー
    This paper presents the characteristics of the building damage caused by a spout (Tatsumaki) in Natori City, Miyagi Prefecture, on September 16, 1998. A questionnaire was given to all residential houses located in the stricken area of approximately 100m by 500m. The dependence of the damage rate on various factors was investigated; the factors under consideration are the roof shape, roof pitch, cladding material, ridge direction relative to the path of the spout, and the age of the house. It is found that hip roof houses were less severely damaged than gable and mono-sloped houses. Furthermore, the results indicate that the roof slope minutely affects the damage rate.
  • 肥料の物理性と流動性との関係
    涌井 学
    農業機械学会誌
    1958年 19 巻 4 号 159-162
    発行日: 1958/03/18
    公開日: 2010/04/30
    ジャーナル フリー
    Nine Kinds of fertilizers were investigated about the elementary physical property and fluidity, as one experiment of improvement studies of fertilizer distributors. The results obtained may be summarized as follows:
    1. The flowing speed of fertilizer from the very narrow hole is chiefly affected by the size of particles.
    2. There is found high significant correlation between fluidity and the angle of repose of fertilizer, in case of flowing out of a vertical round tube. The smaller this angle is, more the fluidity is.
    3. The angle of repose varies chiefly by specific gravity, coefficient of shape and moisture content of fertilizer.
    4. Experimented fertilizer can be classified into six groups, concerning to each fluidity and absorptiveness of water.
  • 間野 浩, 岡崎 源二
    農業気象
    1954年 9 巻 2 号 53-55
    発行日: 1954/03/10
    公開日: 2010/02/25
    ジャーナル フリー
    1. Sudden increase of nocturnal temperature on the northern slope of Ocho valley.
    During a clear night, the temperature shows sudden increase periodically at the middle of the slope, while at the top and foot of the slope, the temperature is lower and does not show any periodicity.
    2. Relation between the sudden increase of nocturnal temperature and the dimension of Basin.
    Such sudden increase of night temperature can be observed at Inawashiro (located at the foot of Mt. Bandai, 1819m above msl) and at Funatsu (located at the foot of Mt. Fuji, 3776m above msl). From the data at these stations, it was found that the characters of the beginning and end, the duration, amplitude and slight oscillation of such phenomenon are related to the relative distance from the upper part of the valley to the station, to the areas of lake and land of basin, elevation of the station, and stability.
  • 面川 大明, 渡邉 浩文, 内海 康雄, 木村 竜士, 渡部 順一
    空気調和・衛生工学会大会 学術講演論文集
    2012年 2012.1 巻 J-26
    発行日: 2012/08/20
    公開日: 2017/08/31
    会議録・要旨集 フリー
  • 青山 高義
    地学雑誌
    1986年 95 巻 6 号 397-412
    発行日: 1986/12/25
    公開日: 2009/11/12
    ジャーナル フリー
    In the region along the Mogami River in the Shonai Plain, Northeastern Honshu, the strong easterlies which blow mainly from SE and ESE and the strong westerlies which blow mainly from NW and WNW prevail (Table 1). The strong easterlies are the local wind, called “Kiyokawa-dashi”, in the Shonai Plain. The most of this westerlies correspond to the winter monsoon winds over East Asia. Some properties of these winds can be demonstrated by the daily mean wind speed at the Karikawa AMeDAS station (38°48'N, 139°59'E) and the Sakata Meteorological Station (38°54'N, 139°51'E) (Fig. 3); Both stations are on the Shonai Plain, Karikawa is located at the eastern side, where the Mogami River comes out on the Plain, and Sakata at the westernside, on the coast of the Sea of Japan. In this report, topographic effects were investigated on the basis of the statistical comparison of the meso-climatological properties of these winds.
    The vertical structure of the wind aloft on the occasion of the easterlies and the wester lies at Karikawa are examined by the aerological data at Sendai (38°16'N, 140°54'E). The easterlies develop under the condition of the wind direction of S in the layer below the summit level (about 800 mb) in the Tohoku District, Northern Honshu (Fig. 4 (a)). Moreover, the wind speed at Karikawa relate to the wind speed below the summit level with positive correlation and that on the heigher levels with negative correlation (Table 2). On the other hand, the velocity of the westerlies depend on the upper wind speed with the direction of W or NW (Fig. 4 (b), Table 2).
    The sea level pressure distribution shows also respective characteristic features in each case of the easterlies and the westerlies at Karikawa. On the occasion of the easterlies, the low on the Japan Sea side of the Japanese Islands and the high on the Pacific side appear clearly and the contours run almost in north-south direction on the pressure distribution pattern. This pattern of pressure distribution corresponds with the southerlies which develop in the lower layer below the summit level in the Tohoku District on the occasion of the easterlies as described above. In particular, the low pressure on the Japan Sea side strengthen in the case of the strong easterlies ; the east to west pressure gradient in the region of the Japan Sea side become large (Fig. 5, Fig. 6 (a), (b)). This pressure pattern suggests the upwind meso-high and the Lee meso-low explained by ATKINSON (1981) and BARRY (1981); this also indicates that the southerlies in the lower layer are induced by the topographic effects of the Tohoku District. On the occasion of the westerlies, the topographic effects are also readily seen on the pressure distribution maps ; the lee low and the upwind high develop and the pressure gradients are particularly large in the region of the Pacific side (Fig. 7, Fig. 8 (a), (b)). The trend of the isobars are northwest-southeast direction, which almost equivalents to the general wind direction.
    In order to evaluate the topographic effects in various dimensions, the relationships between the wind speed and the pressure gradient are examined. In regard to the pressure gradients, the space means of the Tohoku District and of the Japan Sea side region and the difference between Shinjo and Sakata are calculated. The wind speed at Karikawa and these pressure gradients are related to each other with strong linear correlation (Fig. 9, Table 3). In particular, the easterlies at Karikawa are related closely to the space mean of the pressure gradient in the Japan Sea side region and the westerlies are related relatively well to that in the Tohoku District. In addition, it is atracted special attention that the pressure gradient between Shinjo and Sakata strongly correlate with the easterlies than with the westerlies.
  • 太田 風乃, 名越 利幸, 津口 裕茂
    日本科学教育学会研究会研究報告
    2016年 31 巻 3 号 73-76
    発行日: 2016年
    公開日: 2018/04/07
    研究報告書・技術報告書 フリー
    2013 年 8 月 9 日,秋田県・岩手県を中心に記録的な大雨となった.気象庁により2本の線状降水帯はどちらも奥羽山脈風上のバックビルディング形成によるものであると発表されてはいるが,アメダスデータから奥羽山脈を越えた後の岩手県側でも積乱雲群の発達がみられた.そこで今回はその中でもまだ解析が進んでいない岩手県側の線状降水帯の構造について,気象庁非静力学モデル(NHM)を用いて事例の再現を行う.その結果,線状降水帯を再現することができた.また,この計算結果より奥羽山脈を越えた後の岩手県側でも気流の波が確認でき、岩手県側にも積乱雲が発生・発達することができる環境があったと考えられる。また鉛直気流の断面図からその気流の波が岩手県雫石町,紫波町上空に位置していることが確認できた.これより,今回の大雨の構造には波状雲が関係していると考えられる.
  • *関 晋, 丹原 裕, 山村 卓也
    日本火山学会講演予稿集
    2020年 2020 巻 O2-22
    発行日: 2020年
    公開日: 2021/02/01
    会議録・要旨集 フリー
  • 阿部 修, 山口 悟, 小野 正光
    雪氷
    2018年 80 巻 2 号 149-157
    発行日: 2018年
    公開日: 2023/03/01
    ジャーナル オープンアクセス
    月山(標高1984m)における,過去(1954,1955年)と近年(2003,2004年)に実施された4冬期の3月下旬の積雪調査から,積雪深の標高依存性および積雪深から積雪水量への換算式を検討し,月山山頂を中心にした東西南北それぞれ20km四方の積雪賦存量を推定した.その結果,標高ごとの積雪賦存量では900-1000mに最大値が出現すること,全体の積雪賦存量は約5.2億tとなることがわかった.また,平均積雪水量は1300mmとなり,この地域が我が国有数の多雪地帯の一つであることが確認された.
  • 中島 庸三
    農業気象
    1947年 3 巻 1 号 29-36
    発行日: 1947/12/30
    公開日: 2010/02/25
    ジャーナル フリー
  • 加藤 武雄
    陸水学雑誌
    1963年 24 巻 3-4 号 104-113
    発行日: 1963/11/30
    公開日: 2009/10/16
    ジャーナル フリー
    The Niu-gawa River, a tributary of the Mogami River, starts from the Funagata Volcano of the Ou Mountain Range.
    Influenced by the mineral springs and the mineral deposits distributed in the drainage basin, the waters of the upper reaches are characterized by the large contents of SO42- and Ca2+. Throughout the drainage system, Cl- is regarded as a minor constituent of the dissolved substances. As for the water quality of the trunk river, the concentrations of SO42- and Ca2+ and the evaporation residue tend to decrease with the increase of distance from its origin respectively. According to the monthly observations in the fixed station of the main stream, the negative correlation is found between the water level and each of SO42-, Ca2+, Mg2+ content and the alkalinity.
  • 吉田 作松
    雪氷
    1961年 23 巻 6 号 198-207
    発行日: 1961年
    公開日: 2009/09/04
    ジャーナル フリー
    雪を正確に測ることは非常に難しい, ということを
    I.雪量計の降雪捕捉
    II.スノーサーベーによる広域の面積積雪量の観測の二つの場合について次に述べる。これらを正しく認識することは, 雪の観測方法の改良および観測値の解釈のために必要なのである。
  • 古田 作松, 斉藤 邦雄
    雪氷
    1956年 17 巻 2 号 8-13
    発行日: 1956年
    公開日: 2009/07/23
    ジャーナル フリー
    The authors carried out the experiments on totalizers (snow storage gages) at Shinjo City, Yamagata Prefecture, durinf the winter 1954-1955. Results obtained are as follows :
    (1) From measurements of CaCl2 concentration and minimum temperature of its solution, and further the observation of freezing in the calcium chloride solution in various dimensions of totalizers, it was shown that the larger the diameter of the storage body is, in comparison with that of an orifice, the preventive measure of freezing is the more effective.
    (2) When the depth of initial calcium chloride solution exceeds a certain limit (abovt 20 cm in our experiment), we cannot expect the increase of the preventive effect of freezing so much.
    (3) Relations between wind velovity and catching characteristics of totalizer in various types are shown in Fig. 6.
    (6) The following conditions are necessary for totalizers in order to catch snowfall sufficiently.
    a. The diameter of an orifice must be greater than 20 cm at least.
    b. To use a stand pipe type near an orifice.
    c. It is necessary to attach an adequate wind shield (e. g. modified Alter I-type etc.).
  • 木村 吉郎
    農業気象
    1951年 7 巻 1 号 27-29
    発行日: 1951/12/31
    公開日: 2010/02/25
    ジャーナル フリー
    After the former report, I researched on the topographical deviation of prevailing easterlies in Aomori Prefecture during June, 1949 and obtained following results.
    (1) The mean wind directions (=x) of prevailing eastelies in June at iespctive five Pacific coastal points are almost the east as in table 1.
    (2) From the wind direction of the inland point corresponding to the coastal base point for the prevailing easterlies (=NE+ENE+E+ESE+SE) calculated by the method in table 2, the two vaules are derived: the standard deviation (=s) of the deviation of winds in angle and the difference of mean wind direction (=x) deviated at the inland point to the coastals as shown in table 3.
    (3) Making figure 1 with x-difference and s of deviated prevailing easterlies, and comparing the A, B and C groups in the former report, I considered that the prevailing easterlies deviate generally to south on the east side and to north on the west of the backboned mountain system of “Ou”, having probably the largest topographical effect in Aomoti Prefecture, by reason of the easterlies takes a roundabout route of the mountain system as shown in figure 2.
    (4) The larger the x-difference, the larger the s in general. The points having the larger two values are more apart generally to westward in the inland from the Pacific Coast of Aomori Prefecture.
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