著者
松田 時彦
出版者
日本活断層学会
雑誌
活断層研究 (ISSN:09181024)
巻号頁・発行日
vol.2008, no.28, pp.15-22, 2008-03-31 (Released:2012-11-13)
参考文献数
95

That faults are the origin of earthquakes was not an accepted theory in Japan for several decades prior to 1960, although the progressive accumulation of fault displacement in the Quaternary Time had been demonstrated in seismic areas. The Earthquake Prediction Program proposed by seismologists in 1962 stimulated geologists and geomorphologists to start active fault studies.During the 1960-1970's, the following results were made clear: 1) the distribution of active faults in onshore Japan, shown in 123 sheet maps of 1: 200,000 scale with detailed inventories by the Research Group for the Active Faults of Japan; 2) the extensive occurrence of strike-slip type active faults, almost none of which was known on the Japanese Islands at that time; 3) the existence of Quaternary crustal stress field with east-west compression in most of the Japanese Islands, recognized from the conjugate fault system of the central Japan; 4) the quantitative relation between earthquake magnitude and length of the surface trace of co-seismic fault for the onland Japanese earthquakes, which has been used in Japan to estimate magnitudes of future earthquakes; 5) the very long recurrence intervals of activity of a fault, generally longer than the order of 1000 years.In 1980-1990's, especially after the 1995-Kobe earthquake, excavation studies were performed extensively in more than one hundred active faults in onshore Japan. The active fault data obtained so far made it possible to prepare seismic hazard maps with probabilities of the occurrence of strong seismic motion in a specified period.
著者
太田 陽子 松田 時彦 平川 一臣
出版者
日本第四紀学会
雑誌
第四紀研究 (ISSN:04182642)
巻号頁・発行日
vol.15, no.3, pp.109-128, 1976-10-30 (Released:2009-08-21)
参考文献数
28
被引用文献数
14 9

The Noto Peninsula, which projects northeastwards from central Japan is the largest peninsula in the area along the Sea of Japan. This peninsula mostly consists of low relief erosion surfaces and marine terraces truncating the Neogene rocks. Many active faults which displace these geomorphic surfaces as well as alluvial fans are observed as shown in Fig. 1. Figures 2 to 12 represent the detailed topographies and profiles near and across the active faults. All the active faults are expressed as clear fault scarps or scarplets, and most of them are reverse faults with upwarping of the terrace surfaces on the upthrown side.Active faults in this peninsula are classified into three types according to their bearing on geomorphic development. Type I is the first order active fault which resulted in the differentiation of mountain blocks as indicated in Fig. 1. Bijosan I, II and Sekidosan Faults belong to this type. Ochi Depression delineated by these faults at both margins is a kind of ramp valley in a restricted sense rather than graben, as shown in Fig. 13. Fault scarplets at younger uplifted fans (L1) indicate the faulting has still continued until recently. Type II is the second order fault, represented by large scale height difference of marine terraces, and caused subdivision of each mountain block. Togigawa and Sakami Faults belong to this type. All the other active faults except those mentioned above belong to type III, which has resulted in local deformation of marine terrace surfaces. Faults of this type are usually less than 2km in length and less than 20m in vertical displacement. It is especially interesting that the seaward portion of terrace surfaces generally upthrust against their inland parts. Therefore, active faults of type III can be easily recognized by such an abnormal inland-facing scarplet on terrace surface.Active faults in this area are listed in Table 3. It is noticed that the rate of faulting is always more than 10cm/1, 000 years in types I and II, while it is usually less than that in type III. The amount of vertical displacement even in type III is, however, thought too large to be caused by a single earthquake, so that repeated faultings must be considered.Direction of principal axis of maximum compressive stress is N40-60°W, which is inferred from the frequency distribution of trend of active reverse faults shown in Fig. 14. Fault mechanism of a destructive earthquake of 1933 shows also a maximum pressure direction of approximately E-W, probably with a reverse faulting. The direction above mentioned is almost the same as that in the inland areas of central Japan. It is noteworthy, however, that there is a clear difference in fault type between the Noto Peninsula and the other areas of central Japan where strike-slip active faults predominate.
著者
松田 時彦
出版者
日本活断層学会
雑誌
活断層研究 (ISSN:09181024)
巻号頁・発行日
vol.1995, no.13, pp.1-13, 1995-03-25 (Released:2013-03-22)
参考文献数
74
著者
落合 一泰 WINCHESTER MarkJohn
出版者
一橋大学
雑誌
特別研究員奨励費
巻号頁・発行日
2011

平成24年度の成果としてまず、研究分担者(ウィンチェスター)が執筆した<アイヌ>という生体験を近代の意味との関連で思想的に考察する長編論文が英字ジャーナル「Japan Forum」(Routledge)に出版された。同論文は、近代をめぐる時間の哲学思想が現代における新しい時空間の経験のあり方、またはそれが<アイヌ>という生体験にいかなる影響を及ぼしてきたのかについて触れている。また、3月2日~3日に、ウィンチェスターは「『民族問題』の回帰」という研究ワークショップを一橋大学で開催した。ワークショップ参加者は、カナダ(マギル大学)、米国(ファーマン大学、コーネル大学)、日本(同志社大学、一橋大学)から来た。報告題目は次の通りである。「民族問題と資本」、「Female Weavers Refusal of Real Subsumption in Early 20^<th>Century Okinawa」、「原始的蓄積とりベラル・ヒューマニズム」、「帝国の人種主義:琉球民族の民族問題について」、「『主体の無理』の時間性をめぐって」。植民地主義の歴史の、その取り返しがつかない現存こそが、現在のわれわれの生を制約しているものの一つという観点にたったこのワークショップでは、労働力産出における民族的差異の役割、グローバリゼーション下での国家の暴力が世界的に暴露している象徴としての(先住・少数)民族の回帰、対抗権力の問題、宇野弘蔵の「無理を通す機構」をめぐる思想的側面、プロレタリア化と民族問題、ルイ・アルチュセールの重層的決定と構造的因果性やジャック・ラカンの同一化の問題、発話の身体性とその時間性などをめぐって活発に議論が出来、今回の研究成果のさらなる発展の可能性が明らかになった。
著者
石田 晃造 木野村 修一 阪本 光男 朝倉 康博 筒井 亨
出版者
一般社団法人映像情報メディア学会
雑誌
テレビジョン学会技術報告 (ISSN:03864227)
巻号頁・発行日
vol.17, no.23, pp.1-6, 1993-03-26

Kansai Telecasting Corporation has developed a new CM Bank System called KIS-2. In this system we adopted A.P.C. controlls standby and start of groups of CM materials and the CM Bank System takes CM materials out of Magneto-Optical disks one by one to broadcast, so that we can easily cope with change of broadcasting format.