1 0 0 0 東西南北 引籠(ひきこも)りの山猫
- 著者
- 荒戸 裕之
- 出版者
- 渋沢栄一記念財団
- 雑誌
- 青淵 (ISSN:09123210)
- 巻号頁・発行日
- no.860, pp.24-26, 2020-11
1 0 0 0 日本周辺海域中新世最末期以降の構造発達史
- 著者
- 徳山 英一 本座 栄一 木村 政昭 倉本 真一 芦 寿一郎 岡村 行信 荒戸 裕之 伊藤 康人 除 垣 日野 亮太 野原 壮 阿部 寛信 坂井 眞一 向山 建二郎
- 出版者
- 海洋調査技術学会
- 雑誌
- 海洋調査技術 (ISSN:09152997)
- 巻号頁・発行日
- vol.13, no.1, pp.27-53, 2001-03-31
- 参考文献数
- 56
- 被引用文献数
- 6
We propose the guideline to identify fault in offshore region mainly based on MCS profiles, combining high resolution bathymetric maps and geological data such as bore hole results. Based on the guideline we distinguished total 776 faults developing around Japan since the latest Miocene and 753 faults out of total numbers of faults are interpreted to have been active by Quaternary. Together with distinguishment of fault we examined the attributes of each faults such as surface and vertical distribution, criteria of offset, age of movement, certainty of a fault and so on. <br>The results of the distinguishment and examination of the fault leads to the conclusion that the ongoing tectonic framework around Japan characterized by 1) oblique Subduction along the Nankai Trough, 2) rifting at the Okinawa Trough, 3) E-W compressionl regeme along the Japan Sea margin, 4) E-W compressionl regeme along southwestern margin of the Okhotsk Sea and off southern Hokkaido, 5) E-W compressionl regeme along the Japan Trench, 6) rifting in the central arc of the Izu-Ogasawara Arc has been established since 3 Ma, at the earliest 6 Ma. <br>We utilized high resolution data set which we enable to access. Tow big problems, however, still remain in terms of reliability of fault recognition. Those are 1) age of fault movement and 2) spatial distribution of fault. To solve the first one, new technique is required in order to obtain core samples which provide critical evidence to determine age of fault movement. As is second problem concerned, new intensive seismic survey is indispensable to make a precise fault distribution map, especially in the boundary area between land and sea.
1 0 0 0 OA 新たな「探鉱革命」の予感
- 著者
- 荒戸 裕之
- 出版者
- 石油技術協会
- 雑誌
- 石油技術協会誌 (ISSN:03709868)
- 巻号頁・発行日
- vol.80, no.1, pp.4-11, 2015 (Released:2017-05-10)
- 参考文献数
- 21
The characteristics of petroleum exploration are discussed here with historical sense and schematic view, in order to understand scientific and technological nature of exploration. On the basis of such understandings, this paper discusses how modern explorationists can seek a clue of new technological development, when they intend to know what to do promptly for the future successful and expandable exploration.First of all, they had better review remaining questionable points and re-examine unsolved problems in the past “normal exploration,” with having doubts about previous interpretations, and with their close and careful attention. Such actions should be just the studies called “extraordinary exploration,” and those may be a trigger to lead important logic creation to be called “exploration revolution.”As the second action, unconventional exploration must be conducted with wide variety. The exploration of so-called unconventional type of resources such as natural gas hydrates or hydrocarbon from tight reservoirs and so on may not be based yet upon a completed scientific theory. Process to construct new theory replacing or standing in a line to the ongoing paradigm of petroleum exploration, however, may be the action that is appropriate to be described an “exploration revolution.”The third of what the explorationists should do is to conduct “normal exploration” itself continuously. The expansion of the objectives of conventional exploration is a driving force to pull innovation in the technology of drilling and production, and leading factor of maturity of exploration. Maturation of normal exploration with a recent paradigm will encourage an outbreak of following exploration revolutions through the occurrence of extraordinary explorations.