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Topic: Koyaguchi

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	Takehiro Koyaguchi
		Layer A is a lapilli or volcanic sand layer enriched in grayish pumice grains and lithic fragments.
		Koyaguchi (1994) developed a method for estimating the volumetric flow rate of an umbrella cloud from grain-size data of tephra-fall deposits.
		Koyaguchi and Tokuno (1993) assumed that the duration of the eruption was approximately 5 hours on the basis of the duration in which the eruption cloud continued to expand upwind.
	pubs.usgs.gov /pinatubo/koya/index.html (8159 words)

	Wakayama Prefecture - Wikipedia, the free encyclopedia
		On January 1, 2006, the towns of Misato and Nokami from Kaisou District merged to form the new town of Kimino.
		On March 1, 2006, the city of Hashimoto and the town of Koyaguchi from Ito District merged to form the new city of Hashimoto.
		On March 1, 2006, the towns of Hikigawa and Shirahama (both from Nishimuro District) merged to form the new town of Shirahama.
	en.wikipedia.org /wiki/Wakayama_Prefecture (448 words)

	Paladio-Melosantos
		Koyaguchi (this volume) subdivides layer C into a lower, coarser grained layer C1 and an upper, finer grained layer C2.
		Koyaguchi, T., this volume, Volume estimation of tephra-fall deposits from the June 15, 1991, eruption of Mount Pinatubo by theoretical and geological methods.
		Koyaguchi, Takehiro, and Tokuno, Masami, 1993, Origin of the giant eruption cloud of Pinatubo, June 15, 1991: Journal of Volcanology and Geothermal Research, v.
	pubs.usgs.gov /pinatubo/paladio (8811 words)

	[No title]
		Koyaguchi, T. and Ohno, M. (2001): Reconstruction of eruption column dynamics on the basis of grain-size of tephra-fall deposits: Part 1.
		Yoshida, S. and Koyaguchi, T. (1999): A new regime of volcanic eruption due to the relative motion between liquid and gas.
		Goto, A., Taniguchi, H., Oshima, H. and Research Group on Volcanic Explosion (2001): Effect of explosion energy and depth to the pressure-wave form of a blast wave: Field experimental study for the understanding of volcanic blast wave, Geophys.
	www.ganko.tohoku.ac.jp /touko/tokutei/gyouseki/gyouseki2001.html (494 words)

	Discussion
		Note that the original conditions (square) evolved into a convoluted line, and as this happens, the surface area drastically increases.
		Koyaguchi (1985) suggests that mixing in volcanic conduits during eruptions may be responsible for much of the chemical variation and mixing relationships seen in lavas.
		Kouchi and Sunagawa (1985) further predicted that as flow continues, the degree of mixing between the interacting magmas increase until a hybrid magma is produced.
	www.geology.um.maine.edu /geodynamics/analogwebsite/Projects2004/Hooks/Discussion.htm (523 words)

	Tephrabase: Tephra and Tephrochronology (Site not responding. Last check: 2007-10-01)
		Climatological and palaeoenvironmental research has involved studies on the possible major impact of volcanic eruptions on climate, from the possible intensification of ice ages (Ramaswamy, 1992) to localised or short-term climatic change (Baillie and Munro, 1988).
		The large 1991 eruption of Pinatubo, for example, produced a large eruption column that had a small, but noticeable effect on the Earth’s climate (Koyaguchi and Tokuno, 1993).
		Koyaguchi, T., and Tokuno, M. (1993) Origin of the giant eruption cloud of Pinatubo, June 15, 1991.
	www.geo.ed.ac.uk /tephra/tephrochron.html (1340 words)

	Japan: History vs. Technology
		She also said that, apart from their university classes, "we individually are working to preserve old schools at Wakayama." One such school is Koyaguchi Elementary School, a traditional Japanese school in Wakayama.
		These students from Koyaguchi elementary school are playing outside after school.
		The city of Wakayama is famous throughout Japan for its umeboshi (pickled plums) and for mikan, small tangerine-like oranges, commonly known to Westerners as mandarin oranges.
	googolplex.cuna.org /31802/cnote/story.html?doc_id=930 (1563 words)

	26
		When a range of grain sizes is considered, moreover, a simple averaging scheme indicates that the probability density function of fall speeds in the initial suspension at the vent can be inferred from the observed deposit geometry.
		Such an analysis has been applied to fall deposits generated by ash-laden umbrella clouds which spread away from sustained eruption columns at altitude (Koyaguchi, 1994).
		We apply it successfully to examples of pyroclastic flow deposits laid down by ground-hugging flows associated with some violent eruptions (Dade and Huppert, 1996).
	www.the-conference.com /JConfAbs/2/26.html (552 words)

	The Dynamycs and Deposits of Lofting Turbidity Currents
		For sediment deposition, I will try to outline the patterns of these deposits, which are generated by the processes of lofting density currents.
		Geologically much research has been carried out in order to study turbidity currents in general but little has considered the special case of turbidity currents with the lofting phenomena (Carey et al., 1988; Koyaguchi et al., 1990; Sparks et al., 1993; Hürzeler et al., 1996).
		The research aims to outline the dynamics involved in producing this phenomenon as well as the mechanism of sediment deposition from such currents.
	expage.com /page/theresearch (484 words)

	List of Accepted Contributions - VGP11 Volcanic Conduit and Eruption Model Intercomparison (co-sponsored by NH)
		Massol, H. ; Koyaguchi, T. Coupled effects of magma flow and nucleation of gas bubbles in a volcanic conduit
		Koyaguchi, T. ; Mitani, N. K.; Ida, Y. Viscoelastic effects on magma fragmentation in one dimensional conduit flows
		Mitani, N. ; Koyaguchi, T. Effects of magma fragmentation mechanisms on eruption rate
	www.cosis.net /members/meetings/sessions/accepted_contributions.php?p_id=50&s_id=431 (538 words)

	Journal of Volcanology amd Geothermal Research - Solid Earth, 2004, V 129, N 1-3. (Site not responding. Last check: 2007-10-01)
		Journal of Volcanology and Geothermal Research, 2004, V 129, N 1-3, 15 January 2004.
		The role of laboratory experiments in volcanology, Heidy M. Mader, Michael Manga and Takehiro Koyaguchi Pages 1-5 2.
		Bubble growth during decompression of magma: experimental and theoretical investigation, N. Lensky, O. Navon and V. Lyakhovsky Pages 7-22 3.
	library.iem.ac.ru /volcano/03770273/1-3-129.html (356 words)

	Session Information
		Presiding: T Koyaguchi, ERI University of Tokyo; M Garces, Infrasound Laboratory, HIGP, SOEST, University of Hawaii, Manoa
		Volcanic Eruptions: Field Observations, Experimental Constraints, and Integrated Modeling II Presiding: T Koyaguchi, ERI University of Tokyo; M Garces, Infrasound Laboratory, HIGP, SOEST, University of Hawaii, Manoa
		(joint with S) Presiding: T Koyaguchi, ERI University of Tokyo; M Garces, Infrasound Laboratory, HIGP, SOEST, University of Hawaii, Manoa
	www.agu.org /cgi-bin/sessionswp04?meeting=wp04&sec=V (437 words)

	[No title] (Site not responding. Last check: 2007-10-01)
		Journal of volcanology and geothermal research, 15 June 2004, V.134, N.3
		129 (2004) 155—172] K. Kaneko and T. Koyaguchi 249 Acknowledgement to referees, 2003 251 -->
		Copyright© 2005 by the Research Foundation of the State of New York.
	mceer.buffalo.edu /infoService/enews/journalsVwr.asp?fileNumber=0408j50&max=62&custom=0 (49 words)

	GLY 423/523 index.html
		Paper by Philpotts and Dickson (2002) that Sara H-H will present on March 8.
		Paper by Kaneko and Koyaguchi (2000) that Jen S. will present on March 10.
		Paper by Aguirre-Diaz (2001) that Sara B. will present on March 22.
	wings.buffalo.edu /courses/sp05/gly/423-523 (462 words)

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