Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Masaki Shinogi"'
Autor:
Tetsuo Ishikawa, Yumi Yasuoka, Shinji Tokonami, Yusuke Kawada, Masaki Shinogi, Hiroyuki Nagahama, Yasutaka Omori
Publikováno v:
Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2007, 7 (5), pp.629-635
Natural Hazards and Earth System Sciences, Vol 7, Iss 5, Pp 629-635 (2007)
Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2007, 7 (5), pp.629-635
Natural Hazards and Earth System Sciences, Vol 7, Iss 5, Pp 629-635 (2007)
Anomalous emanation of radon (222Rn) was observed preceding large earthquakes and is considered to be linked to preseismic electromagnetic phenomena (e.g. great changes of atmospheric electric field and ionospheric disturbances). Here we analyze atmo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a20a89723b438d9e8674cfabb55d16f9
https://www.nat-hazards-earth-syst-sci.net/7/629/2007/
https://www.nat-hazards-earth-syst-sci.net/7/629/2007/
Autor:
Masahiro Hosoda, Shinji Tokonami, Masaki Shinogi, Yasutaka Omori, Tetsuo Hashimoto, Tetsuo Ishikawa, Yumi Yasuoka, Hiroyuki Nagahama, Yusuke Kawada
Publikováno v:
Applied Geochemistry. 27:825-830
Before the Kobe earthquake, an anomalous increase in atmospheric Rn concentration was observed. By separating the measured concentration of atmospheric Rn into three components according to the distance from the monitoring station, the variation of R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9355bb9e6b2abeb59938ac591b8ce2f3
https://doi.org/10.1016/j.apgeochem.2011.12.018
https://doi.org/10.1016/j.apgeochem.2011.12.018
Autor:
Yumi Yasuoka, Shinji Tokonami, Masaki Shinogi, Hiroyuki Takahashi, Atsuyuki Sorimachi, Tetsuo Ishikawa
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 279(3):885-891
Room experiments were conducted to investigate the effects of an air cleaner on radon mitigation. Radon concentration, equilibrium equivalent radon concentration and unattached fraction were measured during the experiments. Two types of filtration we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa45d8559312c2678ac1dfd34ccf98d0
https://repo.qst.go.jp/records/45599
https://repo.qst.go.jp/records/45599
Autor:
Hiroyuki Nagahama, Yasutaka Omori, Tetsuo Ishikawa, Yumi Yasuoka, Yusuke Kawada, Shinji Tokonami, Masaki Shinogi
Publikováno v:
Physics and Chemistry of the Earth, Parts A/B/C. 34:431-434
The anomalous increase in atmospheric radon concentration prior to the 1995 Kobe earthquake is compared with that in crustal strain and in other preseismic phenomena such as groundwater radon concentration, groundwater discharge rate and chloride ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22628f639aa3d52ebf11284301de3035
https://doi.org/10.1016/j.pce.2008.06.005
https://doi.org/10.1016/j.pce.2008.06.005
Autor:
Shinji Tokonami, Masaki Shinogi, Yasutaka Omori, Hiroyuki Nagahama, Yusuke Kawada, Tetsuo Ishikawa, Yumi Yasuoka
Publikováno v:
Japanese Journal of Health Physics. 43:253-267
Before the 1995 Hyogoken-Nanbu earthquake, various geochemical precursors were observed in the aftershock area: chloride ion concentration, groundwater discharge rate, groundwater radon concentration and so on. Kobe Pharmaceutical University (KPU) is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d75891c1d42bfaa5bffeaf4f64b04163
https://doi.org/10.5453/jhps.43.253
https://doi.org/10.5453/jhps.43.253
Autor:
Hiroyuki Nagahama, Shinji Tokonami, Yasutaka Omori, Tetsuo Ishikawa, Yusuke Kawada, Masaki Shinogi, Yumi Yasuoka
Publikováno v:
Japanese Journal of Health Physics. 43:103-111
The relationship between radon anomalies and earthquakes has been studied for more than 30 years. However, most of the studies dealt with radon in soil gas or in groundwater. Before the 1995 Hyogoken-Nanbu earthquake, an anomalous increase of atmosph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63e1ac8af4773898426a665aabdb06ba
https://doi.org/10.5453/jhps.43.103
https://doi.org/10.5453/jhps.43.103
Autor:
Yasutaka Omori, Tetsuo Ishikawa, Hiroyuki Nagahama, Yusuke Kawada, Yumi Yasuoka, Shinji Tokonami, Masaki Shinogi
Publikováno v:
Nonlinear Processes in Geophysics, Vol 14, Iss 2, Pp 123-130 (2007)
Prior to large earthquakes (e.g. 1995 Kobe earthquake, Japan), an increase in the atmospheric radon concentration is observed, and this increase in the rate follows a power-law of the time-to-earthquake (time-to-failure). This phenomenon corresponds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2cb0f9b724553464fedf78c21e8f7f7
https://doi.org/10.5194/npg-14-123-2007
https://doi.org/10.5194/npg-14-123-2007
Evidence of precursor phenomena in the Kobe earthquake obtained from atmospheric radon concentration
Publikováno v:
Applied Geochemistry. 21:1064-1072
Atmospheric 222 Rn concentrations were determined over a 10a period, which included the date of the Kobe, Japan earthquake, on January 17th 1995. It was found that the seismically related 222 Rn anomaly was higher than the 99% confidence limits for t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::322eaf95bc0fd94f9c4b7654d140caef
https://doi.org/10.1016/j.apgeochem.2006.02.019
https://doi.org/10.1016/j.apgeochem.2006.02.019
Publikováno v:
RADIOISOTOPES. 55:679-686
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0d5a88829521e99fb4a5af1b9e1f5cc
https://doi.org/10.3769/radioisotopes.55.679
https://doi.org/10.3769/radioisotopes.55.679
Autor:
Tetsuo Ishikawa, Yasuhide Kataoka, Tadashi Ishii, Shinji Tokonami, Yumi Yasuoka, Tsuyoshi Kubo, Masaki Shinogi, Hirofumi Suda
Publikováno v:
Radioisotopes. 53(3):123-131
It has been confirmed that, in the measurement of radon-in-water using liquid scintillation counting, the direct method is preferred to the extraction method, since the former is simple technique. With a counting time of 60 minutes, the minimum detec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a3a4e5bd0323d90d3019eb8122032a9
https://repo.qst.go.jp/records/43481
https://repo.qst.go.jp/records/43481