Tópico(s): earthquake and tectonic studies
1982 - | Journal of Natural Disaster Science
天城カワゴ平火山は,伊豆半島の天城火山北西部に位置する単成火山である.噴出物層序から,同火山の噴火活動は噴火様式の異なる4ステージ(ステージI:火砕サージ噴火→ステージII:プリニー式噴火→ステージIII:火砕流噴火→ステージIV:溶岩流出)に区分できる.このうち,ステージIIで噴出した大量の降下軽石(KGP)はおもに東風により西へ吹送されたが,一部は火口の北または北東～南東方向にも認められ,全体の分布域は伊豆～東海地方のほか南関東,中部山岳地域,近畿地方などの広域に及ぶ.その分布には偏西風の影響がほとんど認められないことから,噴火は夏季に生じた可能性が示唆される.またステージIIIでは,火砕流が天城火山山麓の谷を流下したが,これと同時に灰かぐらが発生し,火砕流の流下域やその西側に細粒火山灰層が厚く堆積した.カワゴ平火山の噴火年代については,14C年代値,周辺地域のテフラ層序,KGPと考古遺物との層位関係から,3,060～3,190yrs BPと推定した.この噴火と同時期(縄文時代後～晩期)の伊豆半島や駿河湾岸周辺の沖積低地では,潟湖の埋積が進み,沼沢地・湿地が発達していた.特に静清平野では, ...
Tópico(s): Earthquake and Disaster Impact Studies
2000 - | The Quaternary Research (Daiyonki-Kenkyu)
Hirotada Hirose, Tomoichi Ishizuka,
Shizuoka Prefecture in Japan is now threatened by danger of a major earthquake. This paper attempts to assess the nature and magnitude of the impact of a completely new phenomenon: The effect on people living in a broad region, caused by scientific information given to them, predicting a forthcoming disaster. A three-wave panel survey was conducted over a period of one year and three months to assess the effects of the disaster prediction upon the inhabitants of two large hot-spring tourist areas: ...
Tópico(s): Earthquake and Disaster Impact Studies
1983 - Wiley | Japanese Psychological Research
Kenji Notsu, Hiroshi Wakita, George Igarashi, Tsutomu Sato,
We have monitored water level of a hot spring in Ito City, radon concentration of hot spring water in Naka-Izu and temperature of fumarolic gas from Izu-Oshima Volcano. These parameters have changed prior to and during the seismic and volcanic activities starting on June 30, 1989, off the eastern coast of the Izu Peninsula. We summarized our observations together with other reported hydrological changes. The observed changes are classified into two types. One type is a co-seismic change which occurred ...
Tópico(s): Cerebrospinal fluid and hydrocephalus
1991 - | Journal of Physics of the Earth
Temporal variation in the rate of ground uplift in the Izu Peninsula is investigated minutely using the data of daily mean sealevel at the tidal stations of Ito, Aburatsubo and Manazuru, located along the coast of the Sagami Bay. The following relations between the ground uplift and seimic activity are found in commom in the four recent seismically active periods in Izu, that is, 1) The seismic activity was preceded several months by the ground uplift.2) The rate of the grouud uplift was nearly ...
Tópico(s): earthquake and tectonic studies
1981 - Seismological Society of Japan | Zisin (Journal of the Seismological Society of Japan 2nd ser )
The main purpose of this paper is to clarify the diversity of the subjective environment, focusing on coastal fishing grounds and spots. The study area chosen comprised coastal waters bordered by the Izu Peninsula to the southeast, Oshima Island, and Niijima Island, and referred to in the local fishermen's dialect as Shimauchi (Shimanaka) by fishermen. Due to the presence of many reefs, these waters attract fishermen from various coastal villages. However, there has been no research on the process ...
Tópico(s): Urban and spatial planning
2003 - | Chirigaku hyouron
K. Mogi, Hiromine Mochizuki, Yuri Kurokawa,
Temperature measurements over quite a long period (since 1976) at an artesian spring at Usami Hot Springs, which is located on the northeastern coast of the Izu Peninsula (Japan) where there has been considerable seismic activity recently, have revealed that the temperature of this hot spring varies in close relation to the occurrence of earthquakes and volcanic eruptions in this region. The highly accurate measurements that have been carried out continuously since 1982 show the nature of temperature ...
Tópico(s): earthquake and tectonic studies
1989 - Elsevier BV | Tectonophysics
Yasushi Kitano, Motoshi TAKEMURA, Kiyotaka Majima, Seisuke Nakamura,
Natural waters in the Izu Peninsula area were analyzed in connection with earthquake prediction and ground stability in the area.No relationship was observed between earthquakes and the chemical composition of natural waters.From the chemical composition of natural waters, the amount of rock forming minerals chemically weathered and also the amount of clay minerals formed were estimated.Chemical analyses of natural waters were found to be a valuable and useful index to ground stability in connection ...
Tópico(s): Landslides and related hazards
1983 - | Japanese Journal of Limnology (Rikusuigaku Zasshi)
Tada, T. and Asano, S., 1983. Anomalous crustal uplift and crustal structure in the Matsushiro and the Izu Peninsula earthquake swarm regions. In: P. Vyskočil, M.A. Wassef and R. Green (Editors), Recent Crustal Movements, 1982. Tectonophysics, 97: 241–250. A close relation between the anomalous crustal uplift and the crustal structure has been revealed by a comparison between the precise crustal structure deduced from explosion seismology and the anomalous crustal uplift observed by the precise leveling ...
Tópico(s): Geological and Geochemical Analysis
1983 - Elsevier BV | Developments in geotectonics
Fujita, N. and Tada, T., 1983. Anomalous crustal uplift in the northeastern part of the Izu Peninsula, central Honshu (Japan). In: P. Vyskočil, A.M. Wassef and R. Green (Editors), Recent Crustal Movements, 1982. Tectonophysics, 97: 147–152. In the northeastern part of the Izu Peninsula near the northern boundary of the Philippine Sea Plate crustal subsidence extending for several tens of years and intermittent anomalous crustal uplift extending over about 10 years have occurred alternately. It seems ...
Tópico(s): Geological formations and processes
1983 - Elsevier BV | Developments in geotectonics
Tópico(s): Coastal and Marine Dynamics
1997 - Elsevier BV | Oceanographic literature review
Shinichiro Mori, Masaya Furukawa,
本論文の目的は,2009年12月17日から始まった伊豆半島沖群発地震を利用して,小規模アースダムとしてのため池堤体の地震観測を行い,微小震動レベルにおけるため池堤体の地震応答特性について明らかにすることである.対象ため池は谷池であり上下流の2つのため池が隣接し,2つの堤頂と基盤の3点で観測した.観測は19,20日の2日間行い,極微小から小地震による震度2の地震を含む微小振幅の30の地震動の記録を得た.その結果,振幅の大きく異なるフーリエスペクトルの地震動でも,基盤に対する堤頂のフーリエスペクトル比はおよそ一定の形状を示し,各堤体で固有の振動特性を示すことがわかった.また,地震時と微動のフーリエスペクトル比は類似しており,微動による調査法は有効性を確認できた.
Tópico(s): Earthquake and Disaster Impact Studies
2010 - | Journal of Japan Society of Civil Engineers Ser A1 (Structural Engineering & Earthquake Engineering (SE/EE))
Hiroto YUZAKI, Tomohide OKADA, Takumi OHTSUKA,
わが国の沿岸各地では,地震・津波対策の緊急性が高まっている.しかし,その実現にあっては,沿岸地域が有する地域性への配慮から,取り組みが難航している地域も少なくない.これに関し,伊豆半島沿岸地域では,地域の特色に合わせて50地区に分割し,地区ごとに津波対策を検討する「津波対策地区協議会」の取り組みが展開されている.そこで本研究では,地域性を考慮した津波防災まちづくりの実現に向けた協議プロセスの実施方策を導くため,上述の「地区協議会」のうち調査資料が得られた37地区を対象に,地区の課題や協議プロセスの特徴をもとに3つの地区類型を抽出し,それぞれの型ごとに住民意見の集約方法や津波対策案のとりまとめ方の特徴として5つの協議タイプを明らかにした.
Tópico(s): Urban and spatial planning
2022 - | Journal of Japan Society of Civil Engineers Ser B3 (Ocean Engineering)
Among the advantages of bus service it is held to have a small unit of, carriage and great flexibility. However, the bus is at a disadvantage (both in cost and speed) where traffic is heavy. Oku-izu, the southern part of Izu peninsula, is a mountainous district in which traffic is rather light, but, since there are no railways, bus service is comparatively well utilized there (Fig. 1). The writer has studied bus transport of the inhabitants of Oku-izu. Fig. 2 shows the monthly frequency of trips by ...
Tópico(s): Urban Transport and Accessibility
1953 - Association of Japanese Geographers | Geographical Review of Japan
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. ...
Tópico(s): Earthquake and Disaster Impact Studies
1932 - Association of Japanese Geographers | Geographical Review of Japan
Hironori Tanaka, Kazuhiro Shibagaki, Hiromi Ikezawa, Ayao Kanesawa, Keiji Wãda,
... of rare species of fiddler crab, Uca arcuata (De Haan, 1833) and U. lactea (Dc Haan, 1835), are newly recorded from a tidal flat at the mouth of the Aono River, Izu Peninsula, Shizuoka Prefecture, Japan. Numbers of crabs and their ...
Tópico(s): Marine Biology and Ecology Research
2004 - | Japanese journal of benthology
Tópico(s): Cruise Tourism Development and Management
1938 - Taylor & Francis | Geography
... earthquake, various observations had been intensified in the Izu Peninsula; microearthquake swarms and anomalous crustal uplift in the Izu Peninsula were observed about two years before the earthquake. ... Oshima-kinkai earthquake was not predicted. In the Izu Peninsula, we still have no real-time data processing ...
Tópico(s): Seismology and Earthquake Studies
2011 - American Geophysical Union | Maurice Ewing series
Tadashi Machida, Masao Inokuchi, Eiji Matsumoto, Takayuki Ishii, Hiroshi Ikeda,
Sand ripples formed by oscillatory flow under waves have interested many researchers in hydraulics, and the hydraulic conditions for their formation havee been examined by using small scale experimental wave tanks. The results of these studies, however, are insufficient to explain the hydraulic conditions for the formation of many kinds of the ripple types under natural conditions, which have been described by physical geographers and sedimentologists, because the experimental studies have been ...
Tópico(s): Earthquake and Disaster Impact Studies
1972 - Association of Japanese Geographers | Geographical Review of Japan
Go Sato, Hiroshi Yagi, Fumitoshi Imaizumi, Hiroyuki Sugimoto,
Tópico(s): Earthquake and Disaster Impact Studies
2013 - | Journal of the Japan Landslide Society
Yoshikazu Yamada, Hirokazu Iemura, Shigeru Noda, Kazuyuki IZUNO,
... is applyed to the real network system of Izu-peninsula, which was damaged by Izu-Ohshima-kinkai earthquake (1978). The relationship between the ...
Tópico(s): Earthquake and Tsunami Effects
1986 - | Doboku Gakkai Ronbunshu
... rather complicated due to the collision of the Izu Peninsula with the Japanese Islands, and the subduction of the Philippine Sea plate at the Suruga trough has not been established yet by geophysical evidences. For further refinement of the long-term prediction of the Tokai earthquake, it is necessary to obtain more clear view on the real dynamical and physical process of plate convergence in the Izu collision zone as a total system.
Tópico(s): earthquake and tectonic studies
2011 - American Geophysical Union | Maurice Ewing series
Michiya Irasawa, Takashi Koi, Ching‐Ying Tsou, Kato Nobuaki, Shinjiro MATSUO, Mizuho Arai, Masahiro Kaibori, Takashi Yamada, Mio Kasai, Taeko Wakahara, Daisuke Higaki, Hajime Ikeda, Yoshiharu Ishikawa, K.I. Arai, Shinji Hirose, Tatsuya Sato, Kawabata Hideki, Manabu KOUBU, Niwa Satoshi, Kazuhiro Sugawara, Matsusaka Hiroyuki, Nobuyuki TADA, Toshiyuki KON,
... large Typhoon No. 19 (Typhoon Hagibis) hit the Izu Peninsula with great force on October 12, 2019, causing ...
Tópico(s): Methane Hydrates and Related Phenomena
2020 - | International Journal of Erosion Control Engineering
Antonio Luigi Merlani, Giuseppe De Natale, E. Salusti,
... the case of the Campi Flegrei and the Izu Peninsula) can be particularly small, corresponding to quick hyperthermal ...
Tópico(s): Hydraulic Fracturing and Reservoir Analysis
2001 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Ichiro Murata, Shô Itô, Toyonobu Asao,
... Nozoe also enjoyed gardening at his cottage in Izu Peninsula every weekend. Some passers-by envied Nozoe's ...
Tópico(s): Porphyrin and Phthalocyanine Chemistry
2012 - Wiley | The Chemical Record
Béatrice Martin, Ikuo Kushiro,
... as a 36 cm thick dike in the Izu Peninsula (Japan) was used as starting material. The sample ...
Tópico(s): Geology and Paleoclimatology Research
1991 - Elsevier BV | Journal of Volcanology and Geothermal Research
Narumi Takahashi, H Amano, Kenji Hirata, Hajimu Kinoshita, Siegfried Lallemant, Hidekazu Tokuyama, F. Yamamoto, Asahiko Taira, Kiyoshi Suyehiro,
... very complicated due to the collision of the Izu Peninsula against central Japan. The major remarkable faults around ...
Tópico(s): Geology and Paleoclimatology Research
2002 - Elsevier BV | Marine Geology
... and caused hazards in the eastern to central Izu Peninsula. The meizoseismal zone extended 15 km from east ...
Tópico(s): Geotechnical Engineering and Soil Stabilization
1980 - Elsevier BV | Engineering Geology
Joji Ishizaka, Motonori Kaichi, Masayuki Takahashi,
... spore formation of Leptocylindrus danicus were made off Izu Peninsula, Japan. A rapid increase in ratio of resting ...
Tópico(s): Diatoms and Algae Research
1987 - Springer Science+Business Media | Ecological Research
R. De Rosa, G. G. Zuffa, Asahiko Taira, Jeremy Leggett,
... for more than 500 km. These, occupying the Izu Peninsula and the majority of the Tokai drainage basin ...
Tópico(s): Methane Hydrates and Related Phenomena
1986 - Cambridge University Press | Geological Magazine