著者
Ichiro Kawasaki Yasuhiro Asai Yoshiaki Tamura Takeshi Sagiya Naoya Mikami Yoshimitsu Okada Masaharu Sakata Minoru Kasahara
出版者
The Seismological Society of Japan, The Volcanological Society of Japan, The Geodetic Society of Japan
雑誌
Journal of Physics of the Earth (ISSN:00223743)
巻号頁・発行日
vol.43, no.2, pp.105-116, 1995 (Released:2009-04-30)
参考文献数
22
被引用文献数
78 98

We report the detection of a large ultra-slow earthquake. Subsequent to the July 18, 1992, Sanriku-Oki, Japan, earthquake (Ms6.9, 39.42°N, 143.33°E), a clear post-seismic phase appeared in the crustal strains recorded by quartz-tube extensometers at Esashi (Δ=174 km, φ = -99°, from the NEIC CMT source). We have decomposed the crustal strains into atmospheric pressure effects, tides and trends by the Bayesian tidal analysis method. The EW component of the trend thus extracted displays a clear quasi-static increase of -4 x 10-8 with a time constant of about one day. This is about four times greater than the co-seismic strain step. We have investigated the cause of the post-seismic phase to conclude that this was not due to local disturbances. A similar post-seismic phase of -15 x 10-8 was also observed in the EW component of crustal strain records at Miyako (Δ =117 km, φ = - 80° ), Tohoku University. From the close similarity between the post-seismic waveforms at Esashi and Miyako, we attribute the post-seismic phase to the ultra-slow faulting subsequent to the seismic event. We have inverted the strain steps to obtain a solution of an interplate low-angle thrusting located about 54 km to the east from the NEIC CMT epicenter with a moment release of up to (1-4) x 1020 m, which corresponds to that of a MW7.3-7.7 seismic event.
著者
八木 勇治 菊地 正幸 吉田 真吾 山中 佳子
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.51, no.1, pp.139-148, 1998-07-03 (Released:2010-03-11)
参考文献数
26
被引用文献数
16 23

We investigate the rupture process of Hyuga-nada earthquake of April 1, 1968 (MJMA 7.5). Applying a multiple-time window inversion scheme to teleseismic body wave data, we obtained a detailed spatio-temporal distribution of moment release. The main source parameters are: the seismic moment=2.5×1020[Nm]; the rupture area=64×48[km2]; the stress drop=3.4[MPa]; the focal depth=15[km]. The rupture consists of three major asperities: the first asperity centring about 10km south and 20km west from the hypocenter and having a maximum slip of 4.0m, the second one centring about 8km north and 5km east from the hypocenter and having a maximum slip of 3.0m, and the third one centring about 50km west from the hypocenter and having a maximum slip of 3.2m. We compared the rupture area with that of a few large events (M>6.5) subsequent to the 1968 event. Then we found that the above three asperities of 1968 event coincide with the low seismicity area in the Hyuga-nada region, and do not overlap with the source area of the subsequent large events (M>6.5). This rupture pattern and the seismicity suggest that an area of slab bending as well as fracture of the slab can behave as barriers during earthquake rupture. These barriers may control the maximum size of earthquake source in this region.
著者
百瀬 友哉
出版者
法政大学地理学会
雑誌
法政地理 (ISSN:09125728)
巻号頁・発行日
no.53, pp.13-25, 2021-03

近年,首都圏の鉄道では,「慢性遅延」が大きな問題となっている。鉄道の遅延は慢性遅延と,突発的遅延に分類され,アンケートなどの結果から,慢性遅延は首都圏独自の問題であると明らかにした。それに伴い,首都圏のJRや大手私鉄では様々な対策を講じている。また,近年ではJR総武緩行線にて最も慢性遅延が発生している。本論では,JR総武緩行線の平井~浅草橋間にて統計をとり,関係者への聞き取り調査と,目視による調査を行った。その結果,「停車遅延」が大きな問題になっていることがわかった。そこで,秋葉原駅において追加調査を行い,その停車遅延が次々に隣の駅に伝搬していくことを明らかにした。
著者
[松平定信] [編]
出版者
[出版者不明]
巻号頁・発行日
vol.古画 肖像 四, 1900
著者
渡辺 博明
出版者
北ヨーロッパ学会
雑誌
北ヨーロッパ研究 (ISSN:18802834)
巻号頁・発行日
vol.3, pp.65-74, 2007

スウェーデンの環境党は支持率5 %前後の小政党であるが、1998年から2002年までの2期8年にわたって閣外協力の形で社民党政権を支え、その影響力は無視できないものとなっている。環境党は88年に議会進出を果たした当初、他党との協力の可能性を否定していたが、やがて社民党との交渉を通じた政策決定への関与を模索するようになり、98 年選挙で「要政党」 となると閣外協力に踏み切った。かつて圧倒的な優位を誇った社民党の勢力に翳りが見え始め、同党と環境党および左翼党との協力が進むと、他方で保守・中道4党も、従来には見られなかった周到な協力体制の構築によって政権奪取を目指し始めた。左右二大陣営間のバランスの変化が環境党の議会政治戦略の変化につながった一方、同党が「左派ブロック」入りしたことで、今日のスウェーデンの政党政治において、多党化と政党支持構造の流動化にもかかわらず、「ブロック政治」の作用が強まることとなった。
著者
田中 雄祐
出版者
政治哲学研究会
雑誌
政治哲学 (ISSN:24324337)
巻号頁・発行日
vol.20, pp.56-80, 2016 (Released:2019-09-05)
参考文献数
30
著者
阿部 達夫
出版者
永井書店
雑誌
綜合臨床 (ISSN:03711900)
巻号頁・発行日
vol.11, no.8, pp.1299-1301, 1962-08
著者
西野 淑美
出版者
Japan Association for Urban Sociology
雑誌
日本都市社会学会年報 (ISSN:13414585)
巻号頁・発行日
vol.2019, no.37, pp.62-79, 2019-09-05 (Released:2021-06-29)
参考文献数
20

This paper describes how people understand the relationship between internal migration and social mobility, and how this understanding has changed from the period of rapid economic growth to the subsequent period of migration turnaround. Data were collected through a questionnaire survey and interviews conducted with Fukui-city public high school graduates from the late 1950s to the early 2000s.     The eldest cohort lived in a time when not only college graduates but also high school graduates who did not continue on to college were understood to have a better chance of attaining a higher occupational status through internal migration. However, high school graduates from the next cohort were less likely to move beyond Fukui prefecture through their employment, while migration aimed at college enrollment increased. The number of college graduates returning to Fukui to seek employment also increased. Internal migration came to be understood to relate to social mobility only through higher education. Internal migration to attain a college education became almost a requirement for the youngest cohort to maintain the equivalent social status to their parents and also to remain identified with the reference groups of their own generation. In parallel, polarization emerged among college graduates based on the ranking of their high school. Graduates from highly ranked high schools tended to remain outside Fukui after finishing college, while other high school graduates tended to return to Fukui after college. Although the internal migration experience extended to the broader population in the third cohort, for most of them, migration and social mobility no longer seemed to be related to each other.
著者
加納 暁子
出版者
長崎大学教育学部
雑誌
長崎大学教育学部紀要 = Bulletin of Faculty of Education, Nagasaki University, Combined Issue (ISSN:21885389)
巻号頁・発行日
vol.6, pp.125-133, 2020-03-01

長崎大学教育学部紀要:教科教育学 通巻 第60号(Bulletin of Faculty of Education, Nagasaki University: Curriculum and Teaching, Vol.60)
著者
小柳 春一郎
出版者
日本法社会学会
雑誌
法社会学 (ISSN:04376161)
巻号頁・発行日
vol.2015, no.81, pp.105-116, 2015 (Released:2021-05-05)

In France, the fight against vacant houses (lutte contre le logement vacant) is a more and more important political issue, even though the vacant house rate is decreasing, from 7.0 percent in 2000 to 6.0 percent in 2010. The rate of house for secondary or seasonal use is slightly declining from 10.0 percent in 2000 to 9.8 percent in 2010. This is because the total population in France was rapidly increasing 6.7 percent during the 10 years. It recorded at 64.6 million people in 2010 from 60.5 million in 2010. The pressure of the growing population and the shortage of decent houses especially in large cities are the main reasons for the measures against vacant houses. The tax against vacant houses and the requisition of vacant houses are the two main axes of the legislative measures for the fight against vacant houses. The former is introduced by the Act against exclusion in 1998 and is related to the owners of the houses vacant for at least two years in the eight areas with more than 200,000 inhabitants. The 2013 reform expanded the implementation areas (from 8 to 28 areas) and raised the tax rate. The latter has a long history and was often implemented at the post-Second-World-War period. However, there has been a very rare case of application these days, due to the difficulties in detecting the vacancy. The underuse of house is theoretically permissible in the context of French Law. However, the concept of housing right plays an important role in restricting the owners’ property right.
著者
小林 秀樹
出版者
一般社団法人 日本リモートセンシング学会
雑誌
日本リモートセンシング学会誌 (ISSN:02897911)
巻号頁・発行日
vol.38, no.2, pp.125-130, 2018-04-20 (Released:2018-10-28)
参考文献数
5

Google Earth Engine (GEE) is a cloud-based geospatial data analysis platformfor educational and research purposes. Without familiarity with super-computingarchitecture, users are able to process massive geospatial data sets on GEE. This article describes the characteristics of GEE and some examples of Landsatdata analysis.
著者
Ippei Maruyama Wataru Kotaka Bui Ngoc Kien Ryo Kurihara Manabu Kanematsu Hikotsugu Hyodo Hiroshi Hirao Ryoma Kitagaki Masaki Tamura Masato Tsujino Satoshi Fujimoto Takafumi Noguchi
出版者
Japan Concrete Institute
雑誌
Journal of Advanced Concrete Technology (ISSN:13473913)
巻号頁・発行日
vol.19, no.10, pp.1052-1060, 2021-10-08 (Released:2021-10-08)
参考文献数
20
被引用文献数
15

Countermeasures against carbon dioxide emissions are a concern in the construction field as well as in society. To solve this problem, a concept for new calcium carbonate concrete is proposed, and this concept is validated experimentally. In the proposed concept, calcium carbonate comprising Ca originating from demolished concrete or other Ca-containing industrial wastes and HCO3- from CO2 gas collected from the air or emitted by industrial plants acts as a binder for aggregates, which can be natural rocks or crushed demolished concrete. This short paper describes the details of the process of making calcium carbonate concrete and discusses future perspectives.