http://w.atwiki.jp/ysk_kwd/ Homepage of Yusuke Kawada ja 2012-06-02T18:48:52+09:00 1338630532 https://w.atwiki.jp/ysk_kwd/pages/14.html *&color(blue){''[Menu]''} &space(10)[[Home>http://www22.atwiki.jp/ysk_kwd/]] &br() &space(10)[[Research Interests>http://www22.atwiki.jp/ysk_kwd/pages/20.html]] &br() &space(10)[[Publications>http://www22.atwiki.jp/ysk_kwd/pages/18.html]] &br() &space(15) * [[Papers>http://www22.atwiki.jp/ysk_kwd/pages/18.html#Papers]] &br() &space(15) * [[Int. Conf.>http://www22.atwiki.jp/ysk_kwd/pages/18.html#IntConf]] &br() &space(15) * [[Japan Conf.>http://www22.atwiki.jp/ysk_kwd/pages/18.html#JpnConf]] &br() &space(10)[[CV>http://www22.atwiki.jp/ysk_kwd/pages/19.html]] &br() &space(10)[[Contact>http://www22.atwiki.jp/ysk_kwd/#contact]] &br() &br() &space(6) Last update:&space(3)&date() 2012-06-02T18:48:52+09:00 1338630532 https://w.atwiki.jp/ysk_kwd/pages/19.html |Name|Yusuke Kawada| |Affiliation| Earthquake Research Institute, University of Tokyo, (Tokyo, JAPAN)| |Date of Birth|23 December, 1978| |Place of Birth|Osaka, JAPAN &br()(He grew up in &blanklink(Totsuka){http://www.google.com/maps?hl=en&z=10&q=Totsuka+Station+Yokohama+Japan}, Yokohama, JAPAN)| |Research Experience| [5] &font(i,u){JSPS Research Fellow - PostDocs}&space()(Apr. 2010 - ) '':'' &br() &space(6)Earthquake Research Institute, Univ. Tokyo, JAPAN &br()&font(white){[3]}&font(i,u){Visiting Research Fellow}&space()(Apr., Jul. - Nov. 2010) '':'' &br()&space(6)School of GeoSciences, Univ. Edinburgh, UK &br()[4] &font(i,u){JSPS Postdoctral Fellow for Research Abroad} &br() &font(white){[4]} [ Visiting Research Fellow ] &space() (May 2008 - Mar. 2010) '':'' &br() &space(6)School of GeoSciences, Univ. Edinburgh, UK &br()[3] &font(i,u){JSPS Research Fellow - PostDocs}&space()(Apr. 2007 - Mar. 2008) '':'' &br() &space(6)Dept. Geoenvironmental Sci., Tohoku Univ., JAPAN &br()&font(white){[3]}&font(i,u){Visiting Research Fellow}&space()(Sep. 2007 - Feb. 2008) '':'' &br()&space(6)School of GeoSciences, Univ. Edinburgh, UK &br()[2] &font(i,u){JSPS Research Fellow - DC2}&space()(Apr. 2006 - Mar. 2007) '':'' &br()&space(6)Dept. Geoenvironmental Sci., Tohoku Univ., JAPAN &br()[1] &font(i,u){A Member of Super Doctor Course}&space()(Jul. 2004 - Mar. 2006) '':'' &br()&space(6)The 21st Century COE Program "Advanced Science and &br()&space(6)Technology Center for Dynamic Earth", Tohoku Univ., JAPAN| |Education| - &font(u,b){DSc}&space()(2007)&space(3)''['' Dept. Geoenvironmental Sci., Tohoku Univ. '']'' &br()&space(2)''"''Time-scale Invariance in Viscoelastic Behavior of Rocks''"'' &br()- &font(u,b){MSc}&space()(2004)&space(3)''['' Dept. Geoenvironmental Sci., Tohoku Univ. '']'' &br()&space(2)''"''Viscoelastic Behavior of Rocks and Its Phase Transition Model''"'' &br() - &font(u,b){BSc}&space()(2002)&space(3)''['' Dept. Geoenvironmental Sci., Tohoku Univ. '']'' &br()&space(2)''"''Rock Fabrics and Elastic Wave Velocity Anisotropy of Horoman Peridotite Massif in Hidaka Metamorphic Belt, Hokkaido, Japan''"''| |Selected Prizes| - The Excellent Presentation Prize of the GSJ (2007) &br() - Prize of the "Aoba Society for the Promotion of Science" (2005)| |Referee Experience| Referee for &br() - Journal of Geophysical Research B - Solid Earth &br() - Science of the Total Environment &br() - Physica A: Statistical Mechanics and its Applications &br() - International Journal of Microstructure and Materials Properties &br() - Pure and Applied Geophysics &br() - Annals of Geophysics &br() - Natural Hazard| |Programing| C, Java | |Membership of Academic Societies|- The Geological Society of Japan [GSJ] &br()- Seismological Society of Japan [SSJ] &br() - American Geophysical Union [AGU]| |Motto|&space(1)&font(18px){Just do it!} | |Favorites|- Swimming,&space(2)Driving,&space(2)Walking,&space(2)Sightseeing &br() - &blanklink(Kamakura [Japan]){http://www.google.com/maps?hl=en&z=9&q=Kamakura+Kanagawa+Japan},&space(2)&blanklink(Shiretoko [Japan]){http://www.google.com/maps?hl=en&t=p&z=6&q=44.1,145.1(Shiretoko)},&space(2)&blanklink(Kanazawa [Japan]){http://www.google.com/maps?hl=en&z=7&q=Kanazawa+Japan} &br() &font(white){ -} &blanklink(Thingvellir [Iceland]){http://www.google.com/maps?hl=en&z=4&q=Thingvellir+Iceland},&space(2)&blanklink(Spišské Podhradie [Slovakia]){http://www.google.com/maps?hl=en&z=4&q=Spišské Podhradie+Slovakia},&space(2)&blanklink(Kraków [Poland]){http://www.google.com/maps?&hl=en&z=4&q=Kraków+Poland(Kraków)} &br() - Soseki Natsume, Torahiko Terada, Ukichiro Nakaya &br()- Denki Groove,&space(2)Chika Takahashi,&space(2)Tsurube Shofukutei &br() - Hanshin Tigers &br() - U--Q---K| |Photo (Jan. 2010)|#image(http://www22.atwiki.jp/ysk_kwd/pub/Image/Iceland.JPG,center,title=BlueLagoon[Iceland],http://www.google.com/maps?hl=en&t=p&z=10&q=63.88+-22.448056(Blue+Lagoon+Iceland),blank)| &br() #right{ &font(10px){[[.>http://www22.atwiki.jp/ysk_kwd/pages/22.html]]} } 2012-06-02T18:47:42+09:00 1338630462 https://w.atwiki.jp/ysk_kwd/pages/18.html #anchor(Papers){} *&color(blue){''[Refereed Papers]''} &space(8)[[&color(black){[2004]}>Publications#p2004]], [[&color(black){[2006]}>Publications#p2006]], [[&color(black){[2007]}>Publications#p2007]], [[&color(black){[2008]}>Publications#p2008]], [[&color(black){[2009]}>Publications#p2009]], [[&color(black){[2012]}>Publications#p2012]] #anchor(p2004){} + ''Y. Kawada'' & H. Nagahama (2004) Viscoelastic behaviour and temporal fractal properties of lherzolite and marble: possible extrapolation from experimental results to the geological time-scale. %%%'''Terra Nova'''%%%, ''16'', 128-132.&space(3)[[&color(Orange){[Abstract]}>http://www3.interscience.wiley.com/journal/118791925/abstract]] #anchor(p2006){} + J. Muto, ''Y. Kawada'' & H. Nagahama (2006) Micromorphic continuum with defects and Taylor-Bishop-Hill theory for polycrystals: anisotropic propagation of seismic waves and Golebiewska gauge. In: Teisseyre, R., Takeo, M. & Majewski, E. (eds.) %%%'''Earthquake Source Asymmetry, Structural Media and Rotation Effects'''%%%, Springer-Verlag, Berlin, Chapter 24, 317-328.&space(3)[[&color(Orange){[Abstract]}>http://www.springerlink.com/content/hu871w810j16m73q/]] + ''Y. Kawada'' & H. Nagahama (2006) Cumulative Benioff strain-release, modified Omori's law and transient behaviour of rocks. %%%'''Tectonophysics'''%%%, ''424'', 157-166.&space(3)[[&color(Orange){[Abstract]}>http://dx.doi.org/10.1016/j.tecto.2006.03.032]] + ''Y. Kawada'', H. Nagahama & H. Hara (2006) Irreversible thermodynamic and viscoelastic model for power-law relaxation and attenuation of rocks. %%%'''Tectonophysics'''%%%, ''427'', 255-263.&space(3)[[&color(Orange){[Abstract]}>http://dx.doi.org/10.1016/j.tecto.2006.03.049]] #anchor(p2007){} + ''Y. Kawada'', H. Nagahama, Y. Omori, Y. Yasuoka, T. Ishikawa, S. Tokonami & M. Shinogi (2007) Time-scale invariant changes in atmospheric radon concentration and crustal strain prior to a large earthquake. %%%'''Nonlin. Processes Geophys.'''%%%, ''13'', 123-130.&space(3)[[&color(Orange){[Abstract]}>http://www.nonlin-processes-geophys.net/14/123/2007/npg-14-123-2007.html]]&space(3)[[&color(Orange){[PDF]}>http://www.nonlin-processes-geophys.net/14/123/2007/npg-14-123-2007.pdf]] + ''Y. Kawada'', H. Nagahama & N. Nakamura (2007) Time-scale invariances in preseismic electromagnetic radiation, magnetization and damage mechanics of rocks. %%%'''Nat. Hazards Earth Syst. Sci.'''%%%, ''7'', 599-606.&space(3)[[&color(Orange){[Abstract]}>http://www.nat-hazards-earth-syst-sci.net/7/599/2007/nhess-7-599-2007.html]]&space(3)[[&color(Orange){[PDF]}>http://www.nat-hazards-earth-syst-sci.net/7/599/2007/nhess-7-599-2007.pdf]] + Y. Omori, Y. Yasuoka, H. Nagahama, ''Y. Kawada'', T. Ishikawa, S. Tokonami & M. Shinogi (2007) Anomalous radon exhalation linked to preseismic electromagnetic phenomena. %%%'''Nat. Hazards Earth Syst. Sci.'''%%%, ''7'', 629-635.&space(3)[[&color(Orange){[Abstract]}>http://www.nat-hazards-earth-syst-sci.net/7/629/2007/nhess-7-629-2007.html]]&space(3)[[&color(Orange){[PDF]}>http://www.nat-hazards-earth-syst-sci.net/7/629/2007/nhess-7-629-2007.pdf]] #anchor(p2008){} + Y. Yasuoka, H. Nagahama, T. Ishikawa, ''Y. Kawada'', Y. Omori, S. Tokonami, T. Hashimoto & M. Shinogi (2008) Changes in radon exhalation before the Kobe earthquake. In: Miura, T. & Kinoshita, N. (eds.) %%%'''Proceedings of the Eighth Workshop on Environmental Radioactivity'''%%%, High Eneregy Accelrated Research Organization (KEK), Tsukuba, 138-142. + Y. Yasuoka, H. Nagahama, T. Ishikawa, ''Y. Kawada'', Y. Omori, S. Tokonami & M. Shinogi (2008) An anomalous increase in atmospheric radon prior to the Kobe earthquake. In: Hattori, K. & Telesca, L. (eds.) %%%'''Electromagnetics in Seismic and Volcanic Areas'''%%%, Yubunsha, Saitama, 29-34. + T. Ishikawa, Y. Yasuoka, H. Nagahama, ''Y. Kawada'', Y. Omori, S. Tokonami & M. Shinogi (2008) Radon Anomalies Prior to Earthquakes (I) - Review of Previous Studies -. %%%'''Hoken Butsuri '''('''Jpn. J. Health Phys.''')%%%, ''43'', 103-111 (in Japanese with English abstract).&space(3)[[&color(Orange){[Abstract]}>http://ci.nii.ac.jp/naid/110006824983/en/]]&space(3)[[&color(Orange){[PDF]}>http://ci.nii.ac.jp/lognavi?name=nels&lang=en&type=pdf&id=ART0008762356]]&br()(In English, (2010) In: Yasuoka, Y., Nagahama, H. & Ishikawa, T. (eds.), %%%''' Anomalous Radon Concentration Prior to an Earthquake, a Case Study on the 1995 Kobe Earthquake, Japan'''%%%, Lambert, Saarbrücken, Germany, 1-13.) + T. Ishikawa, Y. Yasuoka, H. Nagahama, ''Y. Kawada'', Y. Omori, S. Tokonami & M. Shinogi (2008) Radon Anomalies Prior to Earthquakes (II) - Atmospheric Radon Anomaly Observed before the Hyogoken-Nanbu Earthquake -. %%%'''Hoken Butsuri '''('''Jpn. J. Health Phys.''')%%%, ''43'', 253-267 (in Japanese with English abstract).&space(3)[[&color(Orange){[Abstract]}>http://ci.nii.ac.jp/naid/110006977587/en/]]&space(3)[[&color(Orange){[PDF]}>http://ci.nii.ac.jp/lognavi?name=nels&lang=en&type=pdf&id=ART0008886830]]&br()(In English, (2010) In: Yasuoka, Y., Nagahama, H. & Ishikawa, T. (eds.), %%%''' Anomalous Radon Concentration Prior to an Earthquake, a Case Study on the 1995 Kobe Earthquake, Japan'''%%%, Lambert, Saarbrücken, Germany, 15-39.) #anchor(p2009){} + Y. Yasuoka, ''Y. Kawada'', H. Nagahama, Y. Omori, T. Ishikawa, S. Tokonami & M. Shinogi (2009) Preseismic changes in atmospheric radon concentration and crustal strain. %%%'''Phys. Chem. Earth'''%%%, ''34'', 431-434.&space(3)[[&color(Orange){[Abstract]}>http://dx.doi.org/10.1016/j.pce.2008.06.005]] + Y. Omori, H. Nagahama, ''Y. Kawada'', Y. Yasuoka, T. Ishikawa, S. Tokonami & M. Shinogi (2009) Preseismic alteration of atmospheric electrical conditions due to anomalous radon emanation. %%%'''Phys. Chem. Earth'''%%%, ''34'', 435-440.&space(3)[[&color(Orange){[Abstract]}>http://dx.doi.org/10.1016/j.pce.2008.08.001]] + ''Y. Kawada'', H. Nagahama, N. Uchida & T. Matsuzawa (2009) Afterslip associated with interplate earthquakes and the viscoelastic behavior of rocks. %%%'''Jour. Geol. Soc. Japan'''%%%, ''115'', 448-456 (in Japanese with English abstract).&space(3)[[&color(Orange){[Abstract]}>http://www.jstage.jst.go.jp/article/geosoc/115/9/115_448/_article/-char/en/]]&space(3)[[&color(Orange){[PDF]}>http://www.jstage.jst.go.jp/article/geosoc/115/9/448/_pdf]] #anchor(p2012){} + Y. Yasuoka, ''Y. Kawada'', Y. Omori, H. Nagahama, T. Ishikawa, S. Tokonami, M. Hosoda, T. Hashimoto, M. Shinogi (2012) Anomalous change in atmospheric radon concentration sourced from broad crustal deformation: A case study of the 1995 Kobe earthquake. %%%'''Applied Geochemistry'''%%%, ''27'', 825-830.&space(3)[[&color(Orange){[Abstract]}>http://dx.doi.org/10.1016/j.apgeochem.2011.12.018]] + Y. Yasuoka, T. Ishikawa, H. Nagahama, ''Y. Kawada'', Y. Omori, S. Tokonami & M. Shinogi (2012) Radon anomalies prior to earthquakes. In: Hayakawa, M. (ed.), %%%'''The Frontier of Earthquake Prediction Studies'''%%%, Nihon-Senmontosho-Shuppan, Tokyo, Japan, 410-427 (in Japanese with English abstract). + Y. Yasuoka, T. Ishikawa, Y. Omori, ''Y. Kawada'', H. Nagahama, S. Tokonami & M. Shinogi (2012) Anomalous Atmospheric Radon Variation before an Earthquake: A Case Study of the 1995 Kobe Earthquake, Japan, In: Li, Z. & Feng, C. (eds.), %%%'''Handbook of Radon: Properties, Applications and Health'''%%%, NOVA Sci. Pub., Hauppauge, USA.&space(3)[[&color(Orange){[Abstract]}>https://www.novapublishers.com/catalog/product_info.php?products_id=35582]]&space(3)[[&color(Orange){[PDF]}>https://www.novapublishers.com/catalog/downloadOA.php?order=1&access=true]] #right{&link_up(↑ Top of this page)} #anchor(IntConf){} *&color(blue){''[Presentations (International Conferences)]''} &space(8)[[&color(black){[2003]}>Publications#Int2003]], [[&color(black){[2004]}>Publications#Int2004]], [[&color(black){[2005]}>Publications#Int2005]], [[&color(black){[2006]}>Publications#Int2006]], [[&color(black){[2007]}>Publications#Int2007]], [[&color(black){[2008]}>Publications#Int2008]], [[&color(black){[2009]}>Publications#Int2009]], [[&color(black){[2010]}>Publications#Int2010]], [[&color(black){[2012]}>Publications#Int2012]] #anchor(Int2003){} + ''Y. Kawada'' & H. Nagahama, A high-temperature viscoelastic constitutive law for rocks with transient behavior. %%%EGS-AGU-EUG Joint Assembly%%% (Nice, France, 06-11 April, 2003), EAE03-A-08126. Session: NP6 Data assimilation in Geophysics. In: '''Geophysical Research Abstracts''', ''5'', 08126. + ''Y. Kawada'' & H. Nagahama, Thermorheological constitutive laws for rocks with transient behavior. %%%XXIII General Assembly of the International Union of Geodesy and Geophysics [IUGG 2003]%%% (Sapporo, Japan, 30 June -11 July, 2003), JSS05/04A/A04-009. Session: JSS05 Physics and Chemistry of Earth Materials (IASPEI, IAVCEI, IAGA), Elasticity and anelasticity. In: '''Abstracts (week A)''', p. A.182. #anchor(Int2004){} + ''Y. Kawada'', H. Nagahama & H. Hara, The mechanical phase transition model for the viscoelastic relaxation behaviour of rocks: introducing the "free-space volume for solids". %%%4th International Conference on Fractal and Dynamic Systems in Geoscience%%% (Seeon, Germany, 19-22 May, 2004). In: '''Books of Abstracts''', p. 47. + ''Y. Kawada'' & H. Nagahama, Viscoelastic relaxation behaviours and temporal fractal properties for rocks and clays. %%%Symposium: Tectonics on Human Time Scales%%% (Sprockhövel, Germany, 01-04 June, 2004), Poster-85. In: '''Abstract volume''', B. Stöckhert and G. Dresen (eds.), p. 171. + J. Muto, ''Y. Kawada'' & H. Nagahama, Micromorphic continuum with defects and lattice preferred orientation: application to seismic anisotropy in polycrystals. Workshop on "Probing Earth Media Having Small-Scale Heterogeneities" (Sendai, Japan, 22 November, 2004), P06. In: '''Proceedings''', pp. 58-61. #anchor(Int2005){} + ''Y. Kawada'', H. Nagahama & H. Hara, Scaled Langevin equation and the inversion for viscoelastic behaviour of rocks. General Assembly of the European Geosciences Union 2005 [EGU2005] (Vienna, Austria, 24-29 April, 2005), EGU05-A-08365. Session: NP3.06 Dynamics of seismicity patterns and earthquake triggering. In: '''Geophysical Research Abstracts''', ''7'', 08365. + ''Y. Kawada'', H. Nagahama & H. Hara, Viscoelastic behaviour of rocks, scaled Langevin equation and the inversion. %%%15th Conference on Deformation Mechanisms, Rheology and Tectonics [DRT2005]%%% (Zürich, Switzerland, 2-4 May, 2005). Session: Scaling of Structures in Space and Time. In: '''Abstract Volume''', p. 120. + ''Y. Kawada'', H. Nagahama & H. Hara, Scaled Langevin equation and the inversion for viscoelastic behavior of rocks in seismic time-scale: theoretical approach. %%%21COE International Symposium 2005, Spatial and Temporal Fluctuations in the Solid Earth,Clues to the Future of Our Planet%%% (Sendai, Japan, 22-27 October, 2005), Sp-23. Session: Spatial and Temporal Fluctuations in the seismic phenomena. In: '''Abstracts''', pp. 158-161. #anchor(Int2006){} + ''Y. Kawada'' & H. Nagahama, Temporal power-laws on preseismic activation and aftershock decay affected by transient behavior of rocks. %%%The 4th International Workshop on Statistical Seismology [Statsei4]%%% (Hayama (Kanagawa), Japan, 9-13 January, 2006). In: '''ISM Report on Research and Education''', ''23'', pp. 142-145. + ''Y. Kawada'' & H. Nagahama, Irreversible thermodynamics and time-scale invariance for viscoelastic behaviour of rocks. %%%General Assembly of the European Geosciences Union 2006 [EGU 2006]%%% (Vienna, Austria, 2-7 April, 2006), EGU06-A-06684. Session: NP3.07 Scaling, scale and nonlinearity in Solid Earth. In: '''Geophysical Research Abstracts''', ''8'', 06684. + ''Y. Kawada'', H. Nagahama, Y. Omori, Y. Yasuoka & M. Shinogi, Irreversible thermodynamic model for accelerated moment release and atmospheric radon concentration prior to large earthquakes. %%%The 2006 AGU Fall Meeting%%% (San Francisco, USA, 11-15 December, 2006), NG51B-1022. Session: Spatiotemporal Evolution of Seismicity. In: '''Eos''', '''Transactions''', '''American Geophysical Union''', ''87'', Fall Meeting Supplement, NG51B-1022. #anchor(Int2007){} + ''Y. Kawada'', H. Nagahama & N. Nakamura, Temporal power-law change in rock magnetization prior to failure. %%%General Assembly of the European Geosciences Union 2007 [EGU2007]%%% (Vienna, Austria, 15-20 April, 2007), EGU2007-A-05946. Session: NH4.03 Deformation processes and accompanying mechanical and electromagnetic phenomena, for rocks and other materials, from the laboratory to the geophysical scale, &font(b,i,green){Selected as "Paper of Special Interest as Identified by Session/Event Organizers"}. In: '''Geophysical Research Abstracts''', ''9'', 05946. + Y. Omori, Y. Yasuoka, H. Nagahama, ''Y. Kawada'', T. Ishikawa, S. Tokonami & M. Shinogi, Variation of electric parameters in atmosphere due to radon exhalation prior to a large earthquake. %%%General Assembly of the European Geosciences Union 2007 [EGU2007]%%% (Vienna, Austria, 15-20 April, 2007), EGU2007-A-05945. Session: NH4.02 Electric, magnetic and electromagnetic phenomena related to earthquakes. In: '''Geophysical Research Abstracts''', ''9'', 05945. + Y. Yasuoka, H. Nagahama, ''Y. Kawada'', Y. Omori, T. Ishikawa, S. Tokonami & M. Shinogi, An anomalous increase in atmospheric radon prior to the Kobe earthquake. %%%Bilateral Seminar Italy-Japan on Electromagnetics in Seismic and Volcanic Areas%%% (Chiba, Japan, 25-27 July, 2007). Session: A. Seismo-electromagentics. In: '''Abstracts''', (2 pages). + H. Nagahama, ''Y. Kawada'', Y. Omori, Y. Yasuoka, T. Ishikawa, S. Tokonami & M. Shinogi, Earthquake precursory phenomenon: an anomalous increase in atmospheric radon concentration. %%%EASTEC symposium 2007: Dynamic Earth -its origin and future-%%% (Sendai, Japan, 18-21 September, 2007), ND-O03. Session: Mitigation of Natural Disaster. In: '''Program & Abstracts''', pp. 201-204. + Y. Omori, Y. Yasuoka, H. Nagahama, ''Y. Kawada'', T. Ishikawa, S. Tokonami & M. Shinogi, Changes in atmospheric electrical conditions due to anomalous radon exhalation preceding large earthquakes. %%%EASTEC symposium 2007: Dynamic Earth -its origin and future-%%% (Sendai, Japan, 18-21 September, 2007), DE-P04. Session: Dynamics of Earthquakes. In: '''Program & Abstracts''', pp. 57-60. + Y. Omori, H. Nagahama, ''Y. Kawada'', Y. Yasuoka, T. Ishikawa, S. Tokonami & M. Shinogi, Increases in radon exhalation and changes of atmospheric electric parameters accompanying percolation process in crust. %%%International Workshop on Seismo-Electromagnetic Phenomena [IWSEP2007]%%% (Bandung, Indonesia, 6-7 November, 2007). In: '''Abstracts''', 31. #anchor(Int2008){} + ''Y. Kawada'', H. Nagahama, Y. Yasuoka, Y. Omori, T. Ishikawa, S. Tokonami & M. Shinogi, Power-law and log-periodic changes in precursory phenomena prior to large earthquakes. %%%The 33rd International Geological Congress [33rd IGC]%%% (Oslo, Norway, 6-14 August, 2008), MAG04108L. Session: MAG-04 Scales, Scaling, Non-linearity and Complexity in the Geosciences. In: '''Abstract CD-ROM'''. + ''Y. Kawada'', H. Nagahama, N. Uchida & T. Matsuzawa, Temporal power-laws in mechanical relaxation of rocks and afterslip associated with interplate earthquakes. %%%The 2008 AGU Fall Meeting%%% (San Francisco, USA, 15-19 December, 2008), T53C-1968. Session: T53C Base of the Crustal Seismogenic Zone. In: '''Eos''', '''Transactions''', '''American Geophysical Union''', ''89'', Fall Meeting Supplement, T53C-1968. #anchor(Int2009){} + ''Y. Kawada'', H. Nagahama, N. Uchida & T. Matsuzawa, Time-scale invariance in afterslip and mechanical relaxation of rocks. %%%Frontiers of Seismology%%% (Edinburgh, 2-3 April, 2009). #anchor(Int2010){} + ''Y. Kawada'', M. Naylor, S. Touati & I. Main, On the origin of power-law rheology during the evolution of damage. %%%General Assembly of the European Geosciences Union 2010 [EGU2010]%%% (Vienna, Austria, 2-7 May, 2010), EGU2010-10111. Session: MPRG15/TS2.5 Scaling and localization during brittle rock failure. In: '''Geophysical Research Abstracts''', ''12'', 10111. + ''Y. Kawada'', T. Yajima & H. Nagahama, Fractional order viscoelasticity and theoretical progress in rheological constitutive law for rocks. %%%2010 AGU Fall Meeting%%% (San Francisco, 13-17 December, 2010), MR41A-1977. Session: MR41A Elasticity, Plasticity, and Mechanical Properties of Mantle Minerals. #anchor(Int2012){} + ''Y. Kawada'', Rheological constitutive law for rocks and minerals with noninteger-order derivative. %%%Soft Matter Physics and Solid Earth Sciences: Unifying Concepts%%% (Tokyo, 5-8 June, 2012). + ''Y. Kawada''& T. Yamashita, Slip-weakening and -strengthening due to Fractional Poroelastic Effect in One Dimension Fault Slip Model. %%%IUGG Conference on Mathematical Geophysics%%% (Edinburgh, 18-22 June, 2012), CD23. Session: Crustal Dynamics. #right{&link_up(↑ Top of this page)} #anchor(JpnConf){} *&color(blue){''[Presentations (Japanese Conferences)]''} &space(8)[[&color(black){[2003]}>Publications#Jpn2003]], [[&color(black){[2004]}>Publications#Jpn2004]], [[&color(black){[2005]}>Publications#Jpn2005]], [[&color(black){[2006]}>Publications#Jpn2006]], [[&color(black){[2007]}>Publications#Jpn2007]], [[&color(black){[2008]}>Publications#Jpn2008]], [[&color(black){[2009]}>Publications#Jpn2009]], [[&color(black){[2010]}>Publications#Jpn2010]], [[&color(black){[2011]}>Publications#Jpn2011]], [[&color(black){[2012]}>Publications#Jpn2012]] #anchor(Jpn2003){} + ''Y. Kawada'', H. Nagahama & H. Hara, The phase transition model on high-temperature viscoelastic behavior of rocks. %%%The 110th Annual Meeting of the Geological Society of Japan%%% (Shizuoka, 19-21 September, 2003), O-230. #anchor(Jpn2004){} + ''Y. Kawada'', Viscoelastic behavior of rocks and its phase transition model. %%% Fluid motion in mantle wedge and crust and the role / Seminor of Dynamics of Earthquakes and Volcanism Research Subgroup, the 21st Century COE Program "Advanced Science and Technology Center for Dynamic Earth", Tohoku University%%% (Kami (Miyagi), 22-23 February, 2004). + ''Y. Kawada'', H. Nagahama & H. Hara, Viscoelastic relaxation behaviors for rocks and clays and their phase transition model. %%%The 111st Annual Meeting of the Geological Society of Japan%%% (Chiba, 18-20 September, 2004), O-129. + H. Nagahama, J. Muto, ''Y. Kawada'' & T. Yajima, Seismic ray theory and Finsler geometry. %%%The 111st Annual Meeting of the Geological Society of Japan%%% (Chiba, 18-20 September, 2004), O-130. #anchor(Jpn2005){} + ''Y. Kawada'', H. Nagahama & H. Hara, Viscoelastic behavior of rocks described by scaled Langevin equation and the inversion. %%%2005 Japan Earth and Planetary Science Joint Meeting%%% (Chiba, 22-26, May, 2005), J064-P013. + ''Y. Kawada'', H. Nagahama & H. Hara, Long time tail for mechanical relaxation behavior of rocks and the response to earthquakes. %%%The 112nd Annual Meeting of the Geological Society of Japan%%% (Kyoto, 18-20 September, 2005), P-109. #anchor(Jpn2006){} + ''Y. Kawada'' & H. Nagahama, Irreversible thermodynamics for viscoelastic behavior of rocks and temporal seismicity patterns. %%%Japan Geoscience Union Meeting 2006%%% (Chiba, 14-18 May, 2006), I142-P011. + ''Y. Kawada'' & H. Nagahama, Strain-release process and nonlinear flow law of crustal rocks prior to a mainshock. %%%The 113rd Annual Meeting of the Geological Society of Japan%%% (Kochi, 16-18 September, 2006), P-70. + H. Nagahama, ''Y. Kawada'', Y. Omori, Y. Yasuoka & M. Shinogi, Strain-release process of crustal rocks and atmospheric radon concentration prior to a mainshock. %%%The 113rd Annual Meeting of the Geological Society of Japan%%% (Kochi, 16-18 September, 2006), P-71. #anchor(Jpn2007){} + Y. Yasuoka, H. Nagahama, T. Ishikawa, ''Y. Kawada'', Y. Omori, S. Tokonami, T. Hashimoto & M. Shinogi, Changes in radon exhalation before the Kobe earthquake. %%%The Eighth Workshop on Environmental Radioactivity%%% (Tsukuba, 22-24 March, 2007) 12. + ''Y. Kawada'', H. Nagahama, Y. Omori, Y. Yasuoka, T. Ishikawa, S. Tokonami & M. Shinogi, Preseismic change in atmospheric radon concentration and crustal damage process. %%%Japan Geoscience Union Meeting 2007%%% (Chiba, 19-24 May, 2007), S142-P006. + H. Nagahama & ''Y. Kawada'', Damage evolution of crust and radon emanation prior to a large earthquake. %%%The 114th Annual Meeting of the Geological Society of Japan%%% (Sapporo, 9-11 September, 2007), P-99, &font(b,i,green){Awarded "the Excellent Presentation Prize of the GSJ"!} #anchor(Jpn2008){} + Y. Yasuoka, ''Y. Kawada'', H. Nagahama, Y. Omori, T. Ishikawa, S. Tokonami & M. Shinogi, Relationships between radon exhalation and stress-strain prior to the 1995 Hyogoken-Nanbu Earthquake. %%%42th Annual Meeting of The Japan Health Physics Society%%% (Ginowan, 26-27 June, 2008), AS-4, &font(b,i,green){Awarded "the Kariyushi Prize (Excellent Oral Presentation Prize of the JHPS)"!} + Y. Yasuoka, ''Y. Kawada'', H. Nagahama, Y. Omori, T. Ishikawa, S. Tokonami & M. Shinogi, Coincidence between radon exhalation and stress-strain before the 1995 Hyogoken-Nanbu Earthquake. %%%55th Annual Meeting of the Geochemical Society of Japan%%% (Tokyo, 17-19 September, 2008), 1B15 (10-04). + H. Nagahama, ''Y. Kawada'', Y. Yasuoka, Y. Omori, T. Ishikawa, S. Tokonami & M. Shinogi, Coupling change in crustal strain and atmospheric radon concentration prior to a large earthquake. %%%The 115th Annual Meeting of the Geological Society of Japan%%% (Akita, 20-22 September, 2008), P-97. #anchor(Jpn2009){} + ''Y. Kawada'', H. Nagahama, N. Uchida & T. Matsuzawa, Temporal pattern in afterslip and mechanical relaxation of rocks, %%%Japan Geoscience Union Meeting 2009%%% (Chiba, 16-21 May, 2009), J137-P001. + Y. Omori, H. Nagahama, ''Y. Kawada'', Y. Yasuoka, T. Ishikawa, S. Tokonami & M. Shinogi, Changes of atmospheric electrical conditions due to preseismic radon emanation: theoretical approach, %%%Japan Geoscience Union Meeting 2009%%% (Chiba, 16-21 May, 2009), Z178-P004. + Y. Yasuoka, H. Nagahama, ''Y. Kawada'', Y. Omori, M. Shimo, T. Ishikawa, S. Tokonami, T. Hashimoto, M. Shinogi, Source of anomalous increase in atmospheric radon before the Kobe earthquake, %%%43th Annual Meeting of The Japan Health Physics Society%%% (Higashiosaka, 3-4 June, 2009), A16. + H. Nagahama, ''Y. Kawada'', N. Uchida & T. Matsuzawa, Analysis of the temporal pattern of afterslip based on the constitutive law for viscoelastic behaviour of rocks. %%%The 116th Annual Meeting of the Geological Society of Japan%%% (Okayama, 4-6 September, 2009), P-83. #anchor(Jpn2010){} + ''Y. Kawada'', M. Naylor, S. Touati & I. Main, Power-law rheology and microscopic heterogeneity. %%%Japan Geoscience Union Meeting 2010%%% (Chiba, 16-21 May, 2010), SIT037-P09. #anchor(Jpn2011){} + ''Y. Kawada'', T. Yajima, & H. Nagahama, Constitutive law of rock rheology with fractional order derivative. %%%Japan Geoscience Union Meeting 2011%%% (Chiba, 22-27 May, 2011), SIT039-P12. + ''Y. Kawada'' & H. Nagahama, Phenomenological constitutive law for transient rheological behavior of rocks and minerals. %%%Japan Geoscience Union Meeting 2012%%% (Chiba, 20-25 May, 2012), SIT42-09. #right{&link_up(↑ Top of this page)} *&color(blue){''[Others]''} + ''Y. Kawada'', %%%Summer School of Seismology 2004 (Japan)%%% (Naruko (Miyagi), Japan, 4-6 August, 2004). + ''Y. Kawada'', %%%The Summer School in Complexity Science%%% (Wye (Kent), United Kingdom, 9-17 July, 2007). #right{&link_up(↑ Top of this page)} 2012-06-02T18:46:05+09:00 1338630365 https://w.atwiki.jp/ysk_kwd/pages/21.html &italic(){}&bold(){}&size(18px){'' '''Welcome to''' ''} &size(20px){'' "Homepage of Yusuke Kawada" ''} &size(20px){'' '''!''' ''} &br() &br() &size(15px){Yusuke Kawada is a Japanese geoscientist (post-doc fellow), working in the fields of structural geology, geodynamics and rock rheology. Now he studies a time-scale invariance in viscoelastic behaviour of rocks or crust and in temporal seismicty patterns (involving mechanical, chemical, hydraulic and electromagnetic relaxation phenomena) prior to a large earthquake or a rock failure, using the irreversible thermodynamics and damage mechanics.} &br() &br() &br() *&font(blue){''[Research Interests - Keywords]''} - Rock rheology, Viscoelastic behaviour, Damage mechanics, Seismic attenuation - Time-scale invariance, Critical phenomenon, Complexity science - Irreversible thermodynamics (Prigogine, Biot, Schapery) - Preseismic variation in atmospheric radon concentration, LAI coupling - Seismo-electromagnetic radiation, Seismo-magnetic effect, Seismo-electrokinetic effect - &link(More Details...){http://www22.atwiki.jp/ysk_kwd/pages/20.html} #right{&link_up(↑ Top)} &br() #anchor(contact){} *&font(blue){''[Contact]''} &size(18px){''Yusuke Kawada, Dr''}&br() &size(16px){(JSPS Research Fellow)} &br() &br() &size(16px){''Earthquake Research Institute, University of Tokyo''} &br() Division of Theoretical Geoscience, &br() 1-611, 1-1-1 Yayoi, Bunkyo-ku, &br() Tokyo 113-0032, JAPAN &br() '''mailto''': ykawada ][][ eri.u-tokyo.ac.jp &br() '''tel''': +81 3 5841 5793 &br() #right{&link_up(↑ Home)} &br() #image(http://www22.atwiki.jp/ysk_kwd/pub/Image/GlenNevis.JPG,center,title=Glen Nevis [Scotland],http://www.google.com/maps?hl=en&t=p&z=8&q=56.772035+-4.983447(Glen Nevis),blank) &br() Special Thanks to KZN & HI! 2010-12-17T07:53:54+09:00 1292540034 https://w.atwiki.jp/ysk_kwd/pages/20.html In his Ph. D, he has studied the viscoelastic behaviour of rocks in terms of the time-scale invariance of local relaxation processes. The constitutive laws of macroscopic behaviours are extrapolated from the experimental and theoretical studies on the dynamics of microstructures, while he established the phenomenological description of mechanical behaviour of rocks from the viewpoint of the scale invariance or complexity. At first, he derived a constitutive law for viscoelastic behaviour including the nonlinear effect due to damage evolutions based on the irreversible thermodynamics. This model was validated for deformation data of a variety of rocks at high temperatures, and he extrapolated a relation based on the relaxation modulus being a temporal power-law. This implies the viscoelastic behaviour of rocks has a time-scale invariance, and we can apply this power-law to the viscoelastic behaviour ranging from the seismic to geological time-scale. This relation is linked to the empirical creep law with an exponent determined by the deformation mechanisms such as dislocation creep or stress corrosion. Moreover, this time-scale invariance affects various power-law relaxation phenomena (e.g., viscoelastic attenuation, damage evolution of rocks, temporal seismicity patterns, transport properties of crustal fluids, electromagnetic radiation and preseismic magnetizaion). His studies contribute to understanding the fundamentals of crustal and mantle dynamics and to assessing earthquake predictability and hazard. *&font(blue){''[Keywords]''} - Rock rheology, Viscoelastic behaviour, Damage mechanics, Seismic attenuation - Time-scale invariance, Critical phenomenon, Complexity science - Irreversible thermodynamics (Prigogine, Biot, Schapery) - Preseismic variation in atmospheric radon concentration, LAI coupling - Seismo-electromagnetic radiation, Seismo-magnetic effect, Seismo-electrokinetic effect #right{} 2008-02-05T01:03:36+09:00 1202141016