著者
飯田 汲事
出版者
愛知工業大学
雑誌
愛知工業大学研究報告. B, 専門関係論文集 (ISSN:03870812)
巻号頁・発行日
vol.14, pp.199-206, 1979-03-31

万寿3年5月23日(1026年6月16日)の地震および津波の災害について,資料調査と現地調査を行い,収集した資料を解析した。この地震により島根県益田市高津の沖合にあった鴨島・鍋島・拍島の陥没および石見の海岸地域の隆起・沈降などの地変が起こり,高津川・益田川下流域および江川下流域に大津波が襲来して大被害を与えた。地震の規模Mは7.6,津波の規模mは3程度と推定された。また震央は131.8°E,34.8°Nと推定される。
著者
飯田 汲事
出版者
愛知工業大学
雑誌
愛知工業大学研究報告. B, 専門関係論文集 (ISSN:03870812)
巻号頁・発行日
vol.13, pp.161-167, 1978-03-31
被引用文献数
4

天正13年11月29日の地震の古資料の収集を行い,それらを調べ直して解析し,震害の全貌を明らかにし震度分布を求めた。また震源の位置,地震の規模を定めた。震源地は伊勢湾内であること,地震のマグニチュードは8クラスであることを示した。なおこの地震の津波の規模および被害について新に見解を述べた。
著者
飯田 汲事
出版者
愛知工業大学
雑誌
愛知工業大学研究報告. B, 専門関係論文集 (ISSN:03870812)
巻号頁・発行日
vol.17, pp.143-157, 1982-03
被引用文献数
1

The earthquake and tsunami damages caused by the Hoei earthquake of 1707 are investigated from collected old documents for understanding the damage locality and the occurrence characteristics of an earthquake in off Tokaido and Nankaido districts. The distribution of seismic intensity and tsunami inundation heights are also studied. Tokaido and Nankaido districts along the Pacific coasts were hit by the tsunami of this earthquake. Most severe inundation heights are estimated at about twenty six meters at Kure in Kochi Prefecture, Shikoku, Japan. This earthquake is considered to be formed of two earthquakes, of which epicenters are assumed as longitude 137.8°E, latitude 34.1°N in Enshunada (Tokaido) and longitude 134.8°E, latitude 33.2°N off west of Kii Peninsula (Nankaido), respectively. Time interval of these two Tokai and Nankai earthquakes is estimated at about 1-2 hours. It is estimated that more than thirty thousand peoples were drowned and more than thirty thousand houses were wrecked or washed away in total by the Hoei earthquake and tsunami. The magnitude of the Hoei earthquake is estimated at 8.3-8.4 for the Tokai and 8.4 for the Nankai earthquake, respectively.
著者
飯田 汲事
出版者
愛知工業大学
雑誌
愛知工業大学研究報告. B, 専門関係論文集 (ISSN:03870812)
巻号頁・発行日
vol.16, pp.159-164, 1981-03-31

The earthquake and tsunami damages caused by the Keicho earthquake of 1605 are investigated from old documents collected to understand the damage locality and the occurrence characteristics of an earthquake in off Tokaido districts. The distribution of seismic intensity and tsunami inundation heights are also studied. Tokaido and Nankaido districts along the Pacific coasts were hit by the tsunami of this earthquake. Most severe inundation heights are estimated at about ten meters in Tokushima Prefecture and Hachijo Island. Two epicenters of the Keicho earthquake are assumed as longitude 137.8°E, latitude 34.0°N in Enshunada and longitude 134.9°E, latitude 33.3°N, off Kii Peninsula, respectively. It is estimated that about five thousand houses were destoryed and about several thousand peoples were drawned by the Keicho earthquake and tsunami. The magnitude of this earthquake is estimated at 8.0-8.1 for off Tokaido and 8.1-8.2 for off Nankaido, respectively.
著者
笠原 順三 大野 一郎 飯田 汲事
出版者
公益社団法人 日本地震学会
雑誌
地震 第2輯 (ISSN:00371114)
巻号頁・発行日
vol.22, no.3, pp.201-209, 1969-11-30 (Released:2010-03-11)
参考文献数
7

When a crystal structure of ammonium fluoride, NH4F, reversibly transforms from Wurtzite structure to NaCl structure at ca. 4kb, a number of small elastic shocks are accompanied with the volume change by the rapid phase transition for polycrystalline specimen. These shocks are also generated during the lowering pressure run, where NaCl structure transforms to Wurtzite structure. If we assume that each of the shocks corresponds to a phase transition in a small volume in the specimen, the amount of the reactant is given by the accumulated number of shocks. Fitting the bulk rate of the phase transition by the equation of the rate theory; dX/dt=K(1-X)p, where X is the mole fraction of the reactant at the time t, we obtain p≈1 and K≈10-1sec-1. The present result shows that the phase transition is the first order reaction and the bulk rate of the phase transition is in the order of 10-1sec-1, although the process of the phase transition is not continuous but is the superposition of very rapid ones with elastic wave radiation.
著者
飯田 汲事
出版者
公益社団法人 日本地震学会
雑誌
地震 第2輯 (ISSN:00371114)
巻号頁・発行日
vol.24, no.3, pp.266-274, 1971 (Released:2010-03-11)
参考文献数
32
被引用文献数
2 2

There have been developed a number of relations between seismic wave energy E and the magnitude M of an earthquake. The general form of the relation is written as logE=α+βM. in which α, β are constants and M is the surface-wave magnitude. A number of relations were presented as given in Table 1 where α and β are listed. The relationship between α and β seems to keep linearity as shown in Fig. 1. This relation can therefore be expressed as α=(26.10±0.91)-(9.60±0.72)β for 5.3≤M≤8.5 (1) α=(19.11±0.70)-(4.59±0.40)β for -2.1≤M≤5.3 (2) An energy-magnitude relation for large earthquakes having magnitude larger than 5 seems to be different from that for small earthquakes having magnitude smaller than 5.The lines expressing (1) and (2) intersect at the point α=12.66, β=1.40. Thus, a new magnitude-energy relation which is appropriate for both large and small earthquakes is obtained as logE=12.66+1.40M. By using the relations between α and β in (1) and (2), seismic efficiency factor f was obtained as 0.04-0.90 from some examples.
著者
正木 和明 楓 重彦 飯田 汲事
出版者
愛知工業大学
雑誌
愛知工業大学研究報告 B (ISSN:03870812)
巻号頁・発行日
no.14, pp.p193-198, 1979-03

1978伊豆大島近海地震による被害を,1月21,22の両日,東伊豆町,河津町,天城揚が島町,下田市を中心に調査した。死傷者数,全半壊家屋数,斜面崩壊数など被害の全体を把握するとともに各地の被害についても調査した。また,墓石の転倒,回転,移動についても調査した。調査より,被害は稲取から天城峠方向に推定される断層近傍に集中し,特に斜面崩壊による被害が多いことがわかった。墓石被害の調査からも断層近傍で震度が大きいことがわかった。以上の点より今回の地震は1974伊豆半島沖地震と類似していることがわかった。
著者
飯田 汲事
出版者
愛知工業大学
雑誌
愛知工業大学研究報告 B (ISSN:03870812)
巻号頁・発行日
no.13, pp.p169-180, 1978-03

ダムの貯水による地震の発生が1940年以来問題になっているので,その問題を調べた。外国においては地震の発生によりダムに被害を与えた例が多い。地震の発生と貯水量・ダムの高さ・貯水速度・地盤の状態との関係を示した。また日本においてもダムの貯水池付近で地震活動が増加した若干の例があるので,それらについて述べ,水と地震との関係例にも言及した。
著者
石本 巳四雄 飯田 汲事
出版者
東京帝国大学地震研究所
雑誌
東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University (ISSN:00408972)
巻号頁・発行日
vol.14, no.4, pp.534-542, 1936-12-21

Nous avons execute certaines experinces sur le sol, dont la propriete mecanique est connue, avec deux appareils construits dernierement, et obtenu les resultats suivants : 1) La viscosite et l'elasticite du sol changent avec le contenant d'eau : les deux diminuent assez rapidement quand de l'eau augumente.
著者
多田 堯 飯田 汲事
出版者
公益社団法人 日本地震学会
雑誌
地震 第2輯 (ISSN:00371114)
巻号頁・発行日
vol.25, no.4, pp.295-301, 1973-03-30 (Released:2010-03-11)
参考文献数
13

The relationships between the predominant period and the magnitude of the microearthquakes were studied. We assume the relationship in the following form. LogT=a+bM where, T is the predominant period in second and M is the earthquake magnitude. The following results were obtained, LogT=-1.50+0.50M (P wave, microearthquakes occurred in the vicinity of the Neo-Valley) LogT=-1.12+0.45M (S wave, microearthquakes occurred in the vicinity of the Neo-Valley) LogT=-1.38+0.44M (P wave, microearthquakes occurred in the vicinity of the Inuyama City) LogT=-2.03+0.65M (P wave, Matsushiro earthquake swarm) LogT=-1.45+0.40M (whole P wave). From the dislocation theory, the relation of T and M is derived as follows, LogT=-0.3-0.7 Logσ+0.5M. (1) where, σ is the stress drop in bar. Substituting σ=40 bars into (1), we get LogT=-1.4+0.5M. (2) This equation agrees well with the above mentioned results. But, when σ is not constant, the equation (1) suggests that the difference of the predominant period in the same earthquake magnitude is the differences of the stress drop. Indeed, the deviations of the data are so large that the stress drops seem to be not constant.The predominant periods of the Matsushiro earthquake swarm are shoter than those of the other microearthquakes. This evidence may relate to the characteristics of the Matsushiro earthquake swarm.
著者
飯田 汲事 志知 竜一 松浦 宏
出版者
日本測地学会
雑誌
測地学会誌 (ISSN:00380830)
巻号頁・発行日
vol.14, no.4, pp.144-155, 1969-09-30 (Released:2011-07-05)
参考文献数
7

After the installation of the instruments: Water-tube Tiltmeter; Ishimoto silica clinograph; silica extensometer, at Inuyama Crustal Movement Observatory in 1966, the continuous observation of crustal deformation has been carried out. This report is the results of 14 months- observation. It was found that the maximum principal strain was 0.6×10-6 in extension and 0.5×10-6 in contruction; areal dilatation was -0.2- +0.6×10-6 and maximum shearing strain was 1.6×10-6. The changes in inclination was also found to be in the order of 1.8×10-6 rad. The direction of extension of the principal strain seems to be corresponding to the geologic structure in Inuyama district. The change in areal dilatation has a reciprocal to that of the maximum shearing strain . The noise accompaning precipitation is comparatively large compared with the secular change in crustal deformation. However, the foundamental clue to the removal of this noise effect on crustal deformation was obtained. The mechanism of this noise appearance is presumably understood by considering the geologic structure in this area.
著者
飯田 汲事 坂部 和夫
出版者
公益社団法人 日本地震学会
雑誌
地震 第2輯 (ISSN:00371114)
巻号頁・発行日
vol.25, no.1, pp.44-55, 1972-07-30 (Released:2010-03-09)
参考文献数
8
被引用文献数
3

The western extension of the Fuk6zu fault associated with the Mikawa earthquake in 1945 was investigated by the present geological survey. It was ascertained that the extension of the fault has begun near the pass between the villages, Kiriyama and Miyabasama and has been followed as far as Shikoyamachi, Nishio city, a total distance of about 9km. As the result of this survey a total length of the earthquake fault formed by the Mikawa earthquake in 1945 became about 28km as shown in Fig. 3. The fault is of a reverse type, and it has manifested itself as a northeastward upthrusting of the land on the southwest side of the fault amounting up to about 1.8m.The fault also may presumably continue to the northwest and further to the Nobi earthquake fault which was formed in 1891, based on the seismological standpoint. It is concluded that a number of destructive earthquakes in the past might occur in connection with a chain of faults such as the Fukui, the Nobi, and the Mikawa earthquake fault.
著者
正木 和明 坪井 利弘 飯田 汲事
出版者
公益社団法人 日本地震学会
雑誌
地震 第2輯 (ISSN:00371114)
巻号頁・発行日
vol.34, no.1, pp.135-144, 1981-03-25 (Released:2010-03-11)
参考文献数
10

Shear wave velocity, soil density and standard penetration test value in depth at 35 boring points in Nagoya area were measured by means of P and S wave-velocity logging up to about 100m in depth. The empirical equations for estimating shear wave velocity and soil density were derived on the basis of these underground data as well as soil characteristics. By making use of these equations and boring data (depth, standard penetration test value, soil age and soil facies), shear wave velocity and soil density in depth were estimated. By means of multi-reflection method of shear wave, transfer functions at about 280 mesh points in Nagoya area were calculated, and distributions of maximum amplification factors and predominant periods were obtained. It was found that maximum amplification factors were large and predominant periods were long in the western part of Nagoya area. The relation between the maximum amplification factor, and the damage ratio in the Nobi and the Tonankai Earthquakes was studied, and it was clarified that the larger maximum amplification factor the greater damage ratio bacame.
著者
飯田 汲事
出版者
愛知工業大学
雑誌
愛知工業大学研究報告. B, 専門関係論文集 (ISSN:03870812)
巻号頁・発行日
vol.15, pp.171-177, 1980-03-31

The earthquake and tsunami damages caused by the Meio earthquake of 1498 are investigated from old documents collected to understand the damage locality and the occurrence characteristics of an earthquake in off Tokaido districts. The distribution of seismic intensity and tsunami inundation heights are also studied. About 500 kilometers along the Paciffic Coasts in Tokaido districts, Central Japan were hit by the tsunami of this earthquake. Most severe inundation heights in the range of 8 to 15 meters are estimated at the Shima Peninsula. Wave source is estimated to be located along the Nankai trough, extending up to the south of lzu Peninsula. The remarkable changes in topographical features were the appearance of the sinking of several large areas such as Hamana, Yaezu, and Tsu distridts and of the opening of the Hamana lake to the sea. It is estimated that about 8,500 houses were destroyed and about 51,000 peoples were drowned by the 1498 earthquake and tsunami. The magnitude of this earthquake is estimated at 8.3 and the epicenter at 138.1°E and 34.0°E.