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1.

図書

図書
鈴木康弘著
出版情報: 東京 : 岩波書店, 2013.9
シリーズ名: 岩波科学ライブラリー ; 212
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2.

論文(リポジトリ)

論文(リポジトリ)
村山, 友之 ; 佐藤, 早苗 ; 氏原, 英敏 ; 森, 友紀 ; 豊島, 剛志 ; 渡部, 直喜 ; 和田, 幸永 ; 小安, 孝幸 ; 播磨, 雄太 ; 小林, 健太 ; 大川, 直樹 ; 小泉, 尚嗣
出版情報: 新潟大学災害復興科学センター年報 — 新潟大学災害復興科学センター年報.  1  pp.155-174,  2007-07.  新潟大学災害復興科学センター
本文リンク: http://hdl.handle.net/10191/5972
概要: We examined considerable changes in temperature, electric conductivity and hydrochemistry of groundwaters around the epicentral area of the Mid Niigata prefecture Earthquake in 2004 during one year from 2004-2005 to 2005-2006 winter months using snow-melting wells, and identified hydrogeological processes and origin of groundwaters. During the 2004-2005 winter months, three new anomaly areas in temperature and electric conductivity of groundwaters appeared along the Yukyu-zan active fault and its inferred northeastern and southwestern extensions, in the eastern part of Kawaguchi Town and Horinouchi region of Uonuma City, and along the northern extension of the Muikamachi active fault from Koide to Obiro regions. The former one area is located on the hanging wall block of the seismogenic source fault of the earthquake. The latter two areas are situated on the footwall of the source fault. The groundwaters from these three anomaly areas are characterized by high NaCl concentration and high water-temperature. The high-salinity and high temperature groundwaters are considered to be mixtures of deep hot fossil seawater and meteoric waters on the basis of hydrochemical characteristics. Therefore, the seismic fracturing may have increased permeability and assisted upward flows of deep hot groundwaters immediately after the earthquake. During the 2005-2006 winter months, temperature and electric conductivity of groundwaters from the anomaly area on the hanging wall have remarkably increased. During the same months, considerable decreases in temperature, electric conductivity, and NaCl concentration of grooundwaters have been recognized in the anomaly areas on the footwall. The difference between the first and second winter months after the earthquake suggests that the permeability in the hanging wall did not decrease under an E-W extensional condition and remains enhancing deep circulation of groundwater along the Yukyu-zan active fault, whereas the permeability in the footwall under an E-W compressional condition decreased and consequently the temperature, electric conductivity and NaCl concentration of groundwaters were lowered. 続きを見る
3.

論文(リポジトリ)

論文(リポジトリ)
佐藤, 早苗 ; 氏原, 英敏 ; 豊島, 剛志 ; 小林, 健太 ; 渡部, 直喜 ; 大川, 直樹 ; 和田, 幸永 ; 小河原, 孝彦 ; 播磨, 雄太 ; 小泉, 尚嗣
出版情報: 新潟大学積雪地域災害研究センター研究年報 — 新潟大学積雪地域災害研究センター研究年報.  27  pp.41-56,  2005-12.  新潟大学積雪地域災害研究センター
本文リンク: http://hdl.handle.net/10191/39282
概要: We investigated the temperature, the electric conductivity and the hydrochemistry of groundwaters using the snow-melting wells around the epicentral area of the 2004 Mid Niigata Prefecture Earthquake (so-called the “Chuetsu Earthquake”) during 2004-2005 winter months. Our investigation reveals several new anomaly areas and zones in temperature and electric conductivity of groundwater related to the Chuetsu Earthquake. The seismic fracturing may have increased permeability and activated groundwater flow. It is likely that these new anomalies of groundwater indicate seismic fracturing near the surface along the Yukyu-zan active fault, its inferred southwestern extension to Ojiya City, and the inferred northern extension of the Muikamachi active fault. On the basis of the distribution of these anomalies, the following buried active faults are inferred: aN-S trending fault in the downtown area of Ojiya City, a WNW-ESE trending fault in the Kawaguchi area, and a NNE-SSW trending fault in the Horinouchi area. The Torigoe and the Katagai active faults were not activated during the earthquake. 続きを見る
4.

論文(リポジトリ)

論文(リポジトリ)
丸井, 英明 ; 宮城, 豊彦 ; 八木, 浩司 ; 梅村, 順
出版情報: 新潟大学積雪地域災害研究センター研究年報 — 新潟大学積雪地域災害研究センター研究年報.  27  pp.57-64,  2005-12.  新潟大学積雪地域災害研究センター
本文リンク: http://hdl.handle.net/10191/39280
概要: The 2005 Northern Pakistan Earthquake triggered tremendous number of landslides in various types and dimensions. As a re sult not a few landslide dams were also formed. This article deals with overview information on various types of landslide disasters induced by this earthquake. An earthquake of M7.6 struck the northern Pakistan on 8 October 2005 with its epicenter approximately 100km north-northeast of Islamabad, near Muzaffarabad, Azad Jammu Kashmir, Shocks by the earthquake were felt over a radius of some 300-400km in northern Pakistan, northwest India and Afghanistan, Geological Survey of Pakistan has reported that more than 83,000 local inhabitants were killed and over 3 millions were affected. It was also reported about 200,000 houses were completely destroyed and another 200,000 houses were partially damaged. Pakistani local authority estimated some millions people have been left homeless. One of the most distinct characteristics of the 2005 Northern Pakistan Earthquake is the wide spread landslides all over the epicentral area. Most of landslides occurred along the two active faults, namely Muzaffarabad and Tanda faults, mapped by Nakata et al. Geographical Survey Institute has interpreted the distribution of landslides around Muzaffarabad induced by the 2005 Northern Pakistan Earthquake by comparing two IKONOS imageries, namely taken before and after the earthquake. It was reported that large-scale landslides occurred along the above mentioned two active faults, concentrating on the northeast uplift side of the faults. Active Fault Research Center of National Institute of Advanced Industrial Science and Technology has identified earthquake source faults along the concerning two active faults on the basis of the results of recent field reconnaissance.<br />An International Conference on 8 October 2005 Earthquake in Pakistan: Its Implications and Hazard Mitigation” was held at Islamabad on January 18-19, 2006 under the sponsorship of the Geological Survey of Pakistan. Seismic experts from various countries have been called for a re-evaluation of seismic zoning and micro zonation studies to the conference. A delegation of the Japan Landslide Society including the authors was also invited as experts for landslide research to the conference. An opportunity to visit the heavily affected areas by the landslide disasters induced by the Northern Pakistan Earthquake was given to the authors by the arrangements of the Geological Survey of the Pakistan. Although our field survey was limited only during two days, the authors have been able to get an overview information on the landslide disasters induced by the Northern Pakistan Earthquake including the largest Hattian landslide area. On the basis of this field survey, the authors have an idea that our research methods for evaluation of danger degree of successive landslide occurrences and practical knowledge to arrange emergency response for mitigation of successive hazard should be basically applicable and effective also to the mitigation of successive future hazards in heavily affected area by the Northern Pakistan Earthquake. 続きを見る
5.

論文(リポジトリ)

論文(リポジトリ)
守随, 治雄 ; 丸井, 英明
出版情報: 新潟大学積雪地域災害研究センター研究年報 — 新潟大学積雪地域災害研究センター研究年報.  21  pp.57-72,  2000-03.  新潟大学積雪地域災害研究センター
本文リンク: http://hdl.handle.net/10191/39207
概要: This article deals with results of field investigations about the damages caused by Kocaeli Earthquake with an emphasis of ground failures. The field investigations were carried out from 25 September to 1 October, 1999. At first, the geology, tectonics and seismotectonics of the target area are briefly outlined. Then evaluation of the findings from the field investigations is presented and discussed. A big earthquake, registering magnitude 7.4 on the Richter scale, struck the northwestern area of Turkey at 03:02 on August 18, 1999. According to preliminary reports, the earthquake caused loss of more than15,000 lives and injury of more than 24,000 people. The epicenter was18km beneath and near to the town of Bahcecik which locates at the eastern end of Izmit gulf. The highest value of horizontal acceleration was measured to be 0.42G at Sakarya. The earthquake caused severe damages in Bahcecik, Derince, Golcuk, Sakarya (Adapazari) and Yalova. The most heavily damaged areas concentrated along the North Anatolian Fault. The North Anatolian Fault is one of the most active fault in the world, along which big earthquakes have occurred repeatedly and quite frequently. The findings are summarized as follows: 1) Severe damages are observed just on the surface fault lines which were newly transformed by the Kocaeli Earthquake in the vicinity of the epicenter (inside of 20km distance). 2) Damages are apparently decreased in the areas a certain distance away from the surface fault lines. 3) Severe damages are observed in the area of alluvium and/or artificial embankment in spite of the distance from the surface fault lines and/or from the epicenter. 4) Possibility of the occurrence of big submarine landslide is to be referred in the vicinity of the epicenter especially in the area of delta and/or alluvial fan where groundwater level locates at high position. 5) The degree of damages is dependent not only on the distance from the epicenter and from the surface fault lines but also densely on the ground conditions (alluvium or artificial embankment). 続きを見る
6.

論文(リポジトリ)

論文(リポジトリ)
矢田, 俊文
出版情報: 資料学研究 — 資料学研究.  11  pp.16-34,  2014-03.  新潟大学大学院現代社会文化研究科プロジェクト「大域的文化システムの再構成に関する資料学的研究」
本文リンク: http://hdl.handle.net/10191/29646
7.

論文(リポジトリ)

論文(リポジトリ)
矢田, 俊文 ; 卜部, 厚志
出版情報: 資料学研究 — 資料学研究.  8  pp.1-23,  2011-03.  新潟大学大学院現代社会文化研究科プロジェクト「大域的文化システムの再構成に関する資料学的研究」
本文リンク: http://hdl.handle.net/10191/16702
8.

論文(リポジトリ)

論文(リポジトリ)
矢田, 俊文 ; 卜部, 厚志
出版情報: 資料学研究 — 資料学研究.  7  pp.1-14,  2010-03.  新潟大学大学院現代社会文化研究科プロジェクト「大域的文化システムの再構成に関する資料学的研究」
本文リンク: http://hdl.handle.net/10191/12854