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1

Origin of volcanic gases discharging from a cooling lava dome of Unzen volcano, Japan

Hiroshi Shinohara, Takeshi Ohba, Kohei Kazahaya, Hiroshi Takahashi

Journal:

Journal of Volcanology and Geothermal Research

Year:

2008

Language:

english

File:

PDF, 942 KB

english, 2008

2

Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan

Genji Saito, Kozo Uto, Kohei Kazahaya, Hiroshi Shinohara, Yoshihisa Kawanabe, Hisao Satoh

Journal:

Bulletin of Volcanology

Year:

2005

Language:

english

File:

PDF, 808 KB

english, 2005

3

Excessive degassing of Izu-Oshima volcano: magma convection in a conduit

Kohei Kazahaya, Hiroshi Shinohara, Genji Saito

Journal:

Bulletin of Volcanology

Year:

1994

Language:

english

File:

PDF, 1.11 MB

english, 1994

4

Passive degassing of magmatic volatiles from Iwate volcano, NE Japan, based on three-dimensional measurement of helium isotopes in groundwater

Ohwada, Michiko, Kazahaya, Kohei, Itoh, Jun'ich, Morikawa, Noritoshi, Takahashi, Masaaki, Takahashi, Hiroshi A., Inamura, Akihiko, Yasuhara, Masaya, Tsukamoto, Hitoshi

Journal:

Journal of Geophysical Research

Year:

2012

Language:

english

File:

PDF, 2.88 MB

english, 2012

5

Volatile transport in a convecting magma column: Implications for porphyry Mo mineralization

Shinohara, Hiroshi, Kazahaya, Kohei, Lowenstern, Jacob B.

Journal:

Year:

1995

Language:

english

File:

PDF, 398 KB

english, 1995

6

Gas pathways and remotely triggered earthquakes beneath Mount Fuji, Japan

Aizawa, Koki, Sumino, Hirochika, Uyeshima, Makoto, Yamaya, Yusuke, Hase, Hideaki, Takahashi, Hiroshi A., Takahashi, Masaaki, Kazahaya, Kohei, Ohno, Masao, Rung-Arunwan, Tawat, Ogawa, Yasuo

Journal:

Year:

2016

Language:

english

File:

PDF, 1.06 MB

english, 2016

7

Relationship between geological structure and helium isotopes in deep ground-water from the Osaka Basin: Application to deep groundwater hydrology

MORIKAWA, NORITOSHI, KAZAHAYA, KOHEI, MASUDA, HARUE, OHWADA, MICHIKO, NAKAMA, ATSUKO, NAGAO, KEISUKE, SUMINO, HIROCHIKA

Journal:

GEOCHEMICAL JOURNAL

Year:

2008

Language:

english

File:

PDF, 4.19 MB

english, 2008

8

Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan

Genji Saito, Kozo Uto, Kohei Kazahaya, Hiroshi Shinohara, Yoshihisa Kawanabe, Hisao Satoh

Journal:

Bulletin of Volcanology

Year:

2005

Language:

english

File:

PDF, 2.50 MB

english, 2005

9

Sulfur dioxide fluxes from the volcanoes of Hokkaido, Japan

Toshiya Mori, Kohei Kazahaya, Clive Oppenheimer, Andrew J.S. McGonigle, Vitchko Tsanev, Rodolfo Olmos, Michiko Ohwada, Tomoaki Shuto

Journal:

Journal of Volcanology and Geothermal Research

Year:

2006

Language:

english

File:

PDF, 760 KB

english, 2006

10

Formation processes of thermal waters in Green Tuff: A geochemical study in the Hokuriku district, central Japan

Michiko Ohwada, Hiroshi Satake, Keisuke Nagao, Kohei Kazahaya

Journal:

Journal of Volcanology and Geothermal Research

Year:

2007

Language:

english

File:

PDF, 1.33 MB

english, 2007

11

Measuring volcanic degassing of SO2 in the lower troposphere with ASTER band ratios

Robin Campion, Giuseppe Giovanni Salerno, Pierre-François Coheur, Daniel Hurtmans, Lieven Clarisse, Kohei Kazahaya, Michael Burton, Tommaso Caltabiano, Cathy Clerbaux, Alain Bernard

Journal:

Journal of Volcanology and Geothermal Research

Year:

2010

Language:

english

File:

PDF, 1.35 MB

english, 2010

12

Application of radiocarbon to detect a deep source CO2 in soil air

Hiroshi A Takahashi, Kohei Kazahaya, Hiroshi Shinohara, Toshio Nakamura

Journal:

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Year:

2004

Language:

english

File:

PDF, 293 KB

english, 2004

13

Mass and heat flux of volcanic gas discharging from the summit crater of Iwodake volcano, Satsuma-Iwojima, Japan, during 1996–1999

Nobuo Matsushima, Kohei Kazahaya, Genji Saito, Hiroshi Shinohara

Journal:

Journal of Volcanology and Geothermal Research

Year:

2003

Language:

english

File:

PDF, 855 KB

english, 2003

14

Magmatic fluids of Tatun volcanic group, Taiwan

Takeshi Ohba, Takeshi Sawa, Noriyasu Taira, Tsanyao Frank Yang, Hsiao Fen Lee, Tefang Faith Lan, Michiko Ohwada, Noritoshi Morikawa, Kohei Kazahaya

Journal:

Applied Geochemistry

Year:

2010

Language:

english

File:

PDF, 951 KB

english, 2010

15

Mixing of magmatic CO2 into volcano groundwater flow at Aso volcano assessed combining carbon and water stable isotopes

Makoto Yamada, Shinji Ohsawa, Kohei Kazahaya, Masaya Yasuhara, Hiroshi Takahashi, Kazuhiro Amita, Hideo Mawatari, Shin Yoshikawa

Journal:

Journal of Geochemical Exploration

Year:

2011

Language:

english

File:

PDF, 1.18 MB

english, 2011

16

Computed tomography reconstruction of SO 2 concentration distribution in the volcanic plume of Miyakejima, Japan, by airborne traverse technique using three UV spectrometers

Kazahaya, Ryunosuke, Mori, Toshiya, Kazahaya, Kohei, Hirabayashi, Jun-ichi

Journal:

Geophysical Research Letters

Year:

2008

Language:

english

File:

PDF, 264 KB

english, 2008

17

Diffusional 18O loss from inclusion water in a natural hydrothermal quartz from the Kaneuchi tungsten deposit, Japan

Takeshi Ohba, Kohei Kazahaya, Sadao Matsuo

Journal:

Geochimica et Cosmochimica Acta

Year:

1995

Language:

english

File:

PDF, 932 KB

english, 1995

18

Effect of UV scattering on SO 2 emission rate measurements

Mori, Takehiko, Mori, Toshiya, Kazahaya, Kohei, Ohwada, Michiko, Hirabayashi, Jun'ichi, Yoshikawa, Shin

Journal:

Geophysical Research Letters

Year:

2006

Language:

english

File:

PDF, 922 KB

english, 2006

19

Nitrogen sources and recycling at subduction zones: Insights from the Izu-Bonin-Mariana arc

Mitchell, Euan C., Fischer, Tobias P., Hilton, David R., Hauri, Erik H., Shaw, Alison M., de Moor, J. Maarten, Sharp, Zachary D., Kazahaya, Kohei

Journal:

Geochemistry, Geophysics, Geosystems

Year:

2010

Language:

english

File:

PDF, 526 KB

english, 2010

20

Sulfur dioxide emissions related to volcanic activity at Asama volcano, Japan

Ohwada, Michiko, Kazahaya, Kohei, Mori, Toshiya, Kazahaya, Ryunosuke, Hirabayashi, Jun-ichi, Miyashita, Makoto, Onizawa, Shin’ya, Mori, Takehiko

Journal:

Bulletin of Volcanology

Year:

2013

Language:

english

File:

PDF, 625 KB

english, 2013

21

Degassing activity from Iwodake rhyolitic cone, Satsuma-Iwojima volcano, Japan: Formation of a new degassing vent, 1990–1999

Hiroshi Shinohara,Kohei Kazahaya,Genji Saito…

Journal:

Earth Planets and Space

Year:

2002

Language:

english

File:

PDF, 546 KB

english, 2002

22

Degassing process of Satsuma-Iwojima volcano, Japan: Supply of volatile components from a deep magma chamber

Kohei Kazahaya,Hiroshi Shinohara,Genji Saito

Journal:

Earth Planets and Space

Year:

2002

Language:

english

File:

PDF, 966 KB

english, 2002

23

Time-averaged SO 2 fluxes of subduction-zone volcanoes: Example of a 32-year exhaustive survey for Japanese volcanoes

Mori, Toshiya, Shinohara, Hiroshi, Kazahaya, Kohei, Hirabayashi, Jun-ichi, Matsushima, Takeshi, Mori, Takehiko, Ohwada, Michiko, Odai, Masanobu, Iino, Hideki, Miyashita, Makoto

Journal:

Journal of Geophysical Research Atmospheres

Year:

2013

Language:

english

File:

PDF, 1.06 MB

english, 2013

24

Groundwater, possibly originated from subducted sediments, in Joban and Hamadori areas, southern Tohoku, Japan

Togo, Yoko S, Kazahaya, Kohei, Tosaki, Yuki, Morikawa, Noritoshi, Matsuzaki, Hiroyuki, Takahashi, Masaaki, Sato, Tsutomu

Journal:

Earth Planets and Space

Year:

2014

Language:

english

File:

PDF, 1.30 MB

english, 2014

25

Gigantic SO2 emission from Miyakejima volcano, Japan, caused by caldera collapse

Kazahaya, Kohei, Shinohara, Hiroshi, Uto, Kozo, Odai, Masanobu, Nakahori, Yasuhiro, Mori, Hirokazu, Iino, Hideki, Miyashita, Makoto, Hirabayashi, Junichi

Journal:

Year:

2004

Language:

english

File:

PDF, 238 KB

english, 2004

26

Widespread distribution of ascending fluids transporting mantle helium in the fore-arc region and their upwelling processes: Noble gas and major element composition of deep groundwater in the Kii Peninsula, southwest Japan

Morikawa, Noritoshi, Kazahaya, Kohei, Takahashi, Masaaki, Inamura, Akihiko, Takahashi, Hiroshi A., Yasuhara, Masaya, Ohwada, Michiko, Sato, Tsutomu, Nakama, Atsuko, Handa, Hiroko, Sumino, Hirochika, N

Journal:

Geochimica et Cosmochimica Acta

Year:

2016

Language:

english

File:

PDF, 3.23 MB

english, 2016

27

Fractures in Cretaceous granite as pathways of upwelling deep-seated water at Kawachinagano City on Kii Peninsula, southwest Japan

Otsubo, Makoto, Shimizu, Toru, Miyakawa, Ayumu, Sato, Tsutomu, Ohwada, Michiko, Kazahaya, Kohei

Journal:

Year:

2016

Language:

english

File:

PDF, 2.66 MB

english, 2016

28

A new ball-milling method for extraction of fluid inclusions from minerals.

Kazahaya, Kohei, Matsuo, Sadao

Journal:

GEOCHEMICAL JOURNAL

Year:

1985

Language:

english

File:

PDF, 2.69 MB

english, 1985

29

Discharge model of fumarolic gases during post-eruptive degassing of Izu-Oshima volcano, Japan.

Kazahaya, Kohei, Takahashi, Masaaki, Ueda, Akira

Journal:

GEOCHEMICAL JOURNAL

Year:

1993

Language:

english

File:

PDF, 3.13 MB

english, 1993

30

Geochemistry of volcanic gases and hot springs of Satsuma-Iwojima, Japan: Following Matsuo.

Shinohara, Hiroshi, Giggenbach, Werner F., Kazahaya, Kohei, Hedenquist, Jeffrey W.

Journal:

GEOCHEMICAL JOURNAL

Year:

1993

Language:

english

File:

PDF, 4.46 MB

english, 1993

31

Successive sampling of fumarolic gases at Satsuma-Iwojima and Kuju volcanoes, southwest Japan: Evaluation of short-term variations and precision of the gas sampling and analytical techniques.

Saito, Genji, Shinohara, Hiroshi, Kazahaya, Kohei

Journal:

GEOCHEMICAL JOURNAL

Year:

2002

Language:

english

File:

PDF, 389 KB

english, 2002

32

Magma Ascending Model of 2000 Miyakejima Eruptions: Evidence from Pyroclastics of August 18 and SO2-rich Volcanic Gas.

UTO, Kozo, KAZAHAYA, Kohei, SAITO, Genji, ITOH, Jun'ichi, TAKADA, Akira, KAWANABE, Yoshihisa, HOSHIZUMI, Hideo, YAMAMOTO, Takahiro, MIYAGI, Isoji, TOMIYA, Akihiko, SATOH, Hisao, HAMAZAKI, Satoshi, SHI

Journal:

Journal of Geography (Chigaku Zasshi)

Year:

2001

Language:

english

File:

PDF, 3.22 MB

english, 2001

33

Volcanic Gas Study of the 2000 Miyakejima Volcanic Activity: Degassing Environment Deduced from Adhered Gas Component on Ash and SO2 Emission Rate.

KAZAHAYA, Kohei, HIRABAYASHI, Jun-ichi, MORI, Hirokazu, ODAI, Masanobu, NAKAHORI, Yasuhiro, NOGAMI, Kenji, NAKADA, Setsuya, SHINOHARA, Hiroshi, UTO, Kozo

Journal:

Journal of Geography (Chigaku Zasshi)

Year:

2001

Language:

english

File:

PDF, 1.39 MB

english, 2001

34

Arima hot spring waters as a deep-seated brine from subducting slab

Kusuda, Chiho, Iwamori, Hikaru, Nakamura, Hitomi, Kazahaya, Kohei, Morikawa, Noritoshi

Journal:

Earth Planets and Space

Year:

2014

Language:

english

File:

PDF, 1.73 MB

english, 2014

35

Research for developing the scientific basis to ensure the safety of the radioactive waste disposal―Geological disposal and intermediate disposal of radioactive waste―

TSUKAMOTO, Hitoshi, ITO, Kazumasa, MORIKAWA, Noritoshi, KAZAHAYA, Kohei, TOSAKI, Yuki, TAKEDA, Mikio

Journal:

Journal of Japanese Association of Hydrological Sciences

Year:

2017

File:

PDF, 4.24 MB

2017

36

An Experimental Study on Variation of Hydrogen and Radon Emanation from Westerly Granite under Uniaxial Compression (Part II)

KATOH, Kan, NISHIZAWA, Osamu, KUSUNOSE, Kinichiro, KAZAHAYA, Kohei

Journal:

Zisin (Journal of the Seismological Society of Japan 2nd ser)

Year:

1989

Language:

english

File:

PDF, 516 KB

english, 1989

37

Spatial distribution and feature of slab-related deep-seated fluid in SW Japan

KAZAHAYA, Kohei, TAKAHASHI, Masaaki, YASUHARA, Masaya, NISHIO, Yoshiro, INAMURA, Akihiko, MORIKAWA, Noritoshi, SATO, Tsutomu, TAKAHASHI, Hiroshi A., KITAOKA, Ko-ichi, OHSAWA, Shinji, OYAMA, Yoichi, OH

Journal:

Journal of Japanese Association of Hydrological Sciences

Year:

2014

Language:

english

File:

PDF, 1.50 MB

english, 2014

38

Geochemical Characterization of Groundwater in a Volcanic System

Bellia, Carmelo, Gallardo, Adrian, Yasuhara, Masaya, Kazahaya, Kohei

Journal:

Year:

2015

Language:

english

File:

PDF, 550 KB

english, 2015

39

Geochemical Characterization of Groundwater in a Volcanic System

Bellia, Carmelo, Gallardo, Adrian, Yasuhara, Masaya, Kazahaya, Kohei

Journal:

Year:

2015

File:

PDF, 550 KB

2015