Kyushu University Academic Staff Educational and Research Activities Database
Researcher information (To researchers) Need Help? How to update
Shoichi Kiyokawa Last modified date:2021.05.03

Associate Professor / Dynamics, Structure and Evolution of the Earth and Planets
Department of Earth and Planetary Sciences
Faculty of Sciences

Graduate School

E-Mail *Since the e-mail address is not displayed in Internet Explorer, please use another web browser:Google Chrome, safari.
 Reseacher Profiling Tool Kyushu University Pure
Project A HP , Symposium and field work guid, students information .
earth evolution .
Project A HP , Symposium and field work guid, students information .
earth evolution .
Academic Degree
Country of degree conferring institution (Overseas)
Field of Specialization
field geology (Earth history)
ORCID(Open Researcher and Contributor ID)
Total Priod of education and research career in the foreign country
Outline Activities
evolution of early earth (Archean)
hydrothermal environment during earth history: Dixon Island Formation in Pilbara Australia, Barberton greenstone belt in South Africa
BIF research (Brazil, Egypt, Ghana:Proterozoic:Great Oxdation ivent, Snowball earth age)
Caldera forming procese of the 7300 year Kikai Caldera, Kagoshima Japan.
KT impact: Yucatan, Belize
Tectonic evolution of Western Kyushu: Koshiki jima, Goto Islands and Okinawa Trough: Early stage of rift system of back arc basin (sea of Japan)
East Timor geology and stratigraphy reconstruction (JICA project)
Research Interests
  • Global environmental change of Archean-Proterozoic deep sea world. South Africa, Australia, Canada,
    keyword : Black Chert, BIF
    2006.04~2017.03Archean to Proterozoic are very dramatic change of tectonics and surface environments. We will focused oceanic surface sedimentary rocks to identified what happen and how different of each sedement. These evidence might be shows the good evidence of the environment change of these early earth time..
  • Reconstruction of oceanic condition through Neoproterozoic ocean; Snowball or arc volcanism
    keyword : Neoproterozoic, Snowball earth
  • tectonic reconstruction of Goto Islands: Stratigraphy and structural history
    keyword : Goto group, opening of Japan sea
  • Reconstruction of oceanic condition through Paleo-Mesoproterozoic ocean
    keyword : Proterozoic, Great Oxidation event, continental rifting-break
  • BIF formation in modern ocean. Satsuma Iwo Jima at Kagoshima prefecture.
    keyword : BIF, Iron sedimentation, hydrothermal system
    2004.09~2022.12The Satsuma Iow-Jima island is one of the most active volcano in the south east Japan. Along this island, there are many hydrothermal activity and reddish brown color water surround it. The Satsuma Iow-Jima bay preserved many thick iron oxide sediments and iron crust. These thick sediments and crusts shows key signal to identified how to make Iron Formation in the Archean..
  • Sedimentation mechanism of Fe rich sediments with microbial activity. New method.
    keyword : BIF, Iron sedimentation, hydrothermal system
    2007.07~2016.12The Satsuma Iow-Jima island is one of the most active volcano in the south east Japan. We try to make iron ore formation method using microbio activity..
  • Tectonic and stratigraphic reconstruction of the East Timor
    keyword : Tethys sea, P-T boundary, accretionary prism
  • Formation of Kikai Caldera
    keyword : caldera volcanic eruption
  • Archean surface environments (hydrothermal and biological activity)
    keyword : black chert, hydrothermal deposit, greenstone belt
    2000.03~2016.12The Dixon Island Formation is one of the best preserved hydrothermal vent system in the Middle Archean. There are many microbial activity in the black chert which preserved on the hydrothemral vent system. I will more focus of this formation and am planning to drilling whole of this sequence..
  • Tectonics of the Western Kyushu area in Japan
    keyword : Cretaceous, Tertiary, Okiwana Trough, Open of Japan sea,
    2002.04~2007.12The Koshiki and the Goto islands are preserved along the coarst of the Nothern Okinawa Trough. I focus the forming Kyushu Island to build up from opening Japan sea and Northern Okinawa trough. These study shows the initiation of the back arc rifting of the east margin of the Asia..
  • KT impact of Cuba and Berize
    keyword : KT boundary, shocked quartz, spherule, Cuga, Yucatan, Berize
    1997.08~2005.12K-Pg impact sequence preserved in the Cuba island and Berize on the Yucatan Peninsula. The Cuba island contains impact related giant debris flow deposit. The Yucatan Peninsula which in the Berize identified giant impact related ejector bed. The study of these sequence shows the try evidence of the power of giant impact..
Current and Past Project
  • To form Geopark for Goto Island. I try to reconstruct geological history of the Goto Island.
  • DXCL2 drilling project occur 3.2 Ga Cleaverville Iron Formation. It will understand sedimentation mechanism of banded Iron formation in pre Grate Oxidation event.
  • Detail geologic work to form geologic map, cross section, column for Proterozoic greenstone. To identified pareoenvironment of feet ocean condition. In addition, to get fresh drilling core of each section.
  • Identfied of the Kikai Cardera and around topography by Cardera eruption.
  • ICDP Barberton Greenstone belt drilling project focus to drilling of 3.5-3.2Ga oceanic sediments and crustal rocks.
  • Clear to iron formation mechanism by microbial activity form Iow Island.
  • Restored oceanic setting environment in Archean and Proerozoic ocean floor.
  • Drilling of 3.2Ga hydrothermal sedimentary secuence in Cleaverville Group in coastal Pilbara Greenstone terrane.
  • The Archean Biosphere Drilling Project.
Academic Activities
1. Super Time Scale of the Earth.
2. The Whole History of the Earth : The miracle of 4.6 Billion years revealed by geologic photographs.
1. Kosuke T. Goto, Yasuhito Sekine, Takashi Ito, Katsuhiko Suzuki, Ariel D. Anbar, Gwyneth W. Gordon, Yumiko Harigane, Teruyuki Maruoka, Gen Shimoda, Teruhiko Kashiwabara, Yutaro Takaya , Tatsuo Nozaki, James R. Hein. George M. Tetteh, Frank K. Nyame, Shoichi Kiyokawa, Progressive ocean oxygenation at ~2.2 Ga inferred from geochemistry and molybdenum isotopes of the Nsuta Mn deposit, Ghana, Chemical Geology,, 567, 120116, 2020.07.
2. Shoichi Kiyokawa, Thematic section: Special topics in 4th IGS ‘Precambrian World 2’, Island Arc, DOI: 10.1111/iar.12360, e12360, 1-4, 2020.05.
3. Maekawa, T., Kiyokawa, S., Maeda, H., Tanaka, G., Costa, J. E. F., and Freitas, A. T., First report of early Permian albaillellarian radiolarians from East Timor, Paleontological Research, doi:10.2517/2020PR009., 25, 1, 32-40, 2020.05.
4. Shoichi Kiyokawa, Taishi Suzuki, Hanaa Abdenaby El-Dokouny, Maher Dawoud, Mohamed Mahmoud Abuelhasan,, Tectonic and sedimentary history of the neoproterozoic metavolcanic–volcaniclastic rocks of the El-Dabbah Group, Central Eastern Desert, Egypt., Journal of African Earth Sciences,, 165, 1-17, 2020.03.
5. Shoichi Kiyokawa, Taishi Suzuki, Kenji Horie, Mami Takehara, Hanna A. El-Dokouny, Maher Dawoud, Mohamed M. Abuelhasan,, Stratigraphy, petrology, and geochemistry of a Neoproterozoic banded iron sequence in the El-Dabbah Group, Central Eastern Desert, Egypt., Journal of African Earth Sciences,, 165, 1-16, 2020.02.
6. Kento Motomura, Shoichi Kiyokawa, Minoru Ikehara, Kentaro Tanaka, Yuji Sano, Geochemical constraints on the depositinal environment of the 1.84 Ga Embury Late Formation, Flin Flon Belt, Canada., Island arc, DOI: 10.1111/iar.12324, 334, 105475, 1-11, 2020.02.
7. Shoichi Kiyokawa, Yuhei Aihara, Mami Takehara, Kenji Horie, Timing and development of sedimentation of the Cleaverville Formation and a post-accretion pull-apart system in the Cleaverville area, coastal Pilbara Terrane, Pilbara, Western Australia, Island arc, DOI: 10.1111/iar.12324, 334, 105475, 1-23, 2019.10.
8. Tsutomu Ota, Yuhei Aihara, Shoichi Kiyokawa, Ryoji Tanaka, Eizo Nakamura,, Tourmaline in a Mesoarchean pelagic hydrothermal system: Implications for the habitat of early life., Precambrian Research, 10.1111/ iar.12182, 334, 105475, 1-17, 2019.10, [URL].
9. Shoichi Kiyokawa, Takuya Ueshiba, Rapid sedimentation of iron oxyhydroxides in an active hydrothermal shallow semi-enclosed bay at Satsuma Iwo-Jima Island, Kagoshima, Japan. , Sedimentary Geology,, 319, 98-113, 2015.01.
10. 星野 辰彦, 倉富 隆, 室野 ゆき, 堀 ともゆき, 大岩根尚, 清川 昌一, 稲垣ふみお, Ecophysiology of Zetaproteobacteria Associated with Shallow Hydrothermal Iron-Oxyhydroxide Deposits in Nagahama Bay of Satsuma Iwo-Jima, Japan., Frontiers Microbiology,, 11, 2015.01.
11. Shoichi Kiyokawa, Shoichiro Koge, Takashi Ito, Minoru Ikehara, An ocean-floor carbonaceous sedimentary sequence in the 3.2-Ga Dixon Island Formation, coastal Pilbara terrane, Western Australia. , Precambrian Research,, 255, 123-143, 2014.11, tThe Dixon Island Formation of the Pilbara terrane, Western Australia, extends from Cleaverville Beachto the Dixon Island coast, and is the only example worldwide of a coastal outcrop of a 3.2–3.1 Ga low-grade greenstone belt. The Dixon Island Formation was situated in an immature island arc setting andcomprises siliceous, carbonaceous deep-water sediments that contain evidence for hydrothermal andmicrobial activity. The extensive outcrop along the coastline makes it possible to examine in detail thecharacteristics of Mesoarchean sedimentation in a hydrothermal environment. This study focuses on acontinuously exposed carbonaceous, black chert succession in the central part of the northern coastlineoutcrop on Dixon Island. At this site, a 20-m-thick, carbonaceous, black chert sequence conformablyoverlies basement rocks of highly altered komatiite–rhyolite tuffs. The black chert sequence formedwell-bedded black chert with carbonaceous peloidal matter and fragmented grains, and the sequence ishomogeneous and finely laminated. In this sequence, evidence of low-temperature hydrothermal fluid,sediments and alteration stractures are well preserved in the lowermost section, indicating that high lev-els of hydrothermal activity occurred on the ocean floor during deposition. In particular, swarms of blackchert veins provide evidence of post-volcanic hydrothermal activity that released organic matter andsilica to the ocean. The carbonaceous peloidal textures and 13Corgvalues of sediments located just abovethe basement, which hosts the vein swarms, suggest that the veins were the conduits for hydrothermalfluid which contained organic-rich silica material and that flowed onto the seafloor to form the homo-geneous carbonaceous cherts along with hydrothermal-related sediment. The 13Corgvalues of organicmatter in the black cherts range from −42‰ to −22‰ (average = −31.9‰; n = 313). Lighter 13C values(−35‰ to −42‰) characterize carbonaceous laminated black chert located ∼5 m above the basement,where biogenic structures (e.g. biomat bed, microfossil structures) are found. The lighter 13C valuesmight be related to methanotrophic micro-organic activity within the sediments during hydrothermalactivity. In summary, we reconstructed the sedimentary environment upon a Mesoarchean hydrothermalocean floor that was a site of microbial activity and local methanogenesis.© 2014 Elsevier.
12. Shoichi Kiyokawa, Takashi Ito, Minoru Ikehara, Kosei Yamaguchi, Yusuke Suganuma, Preliminary report on the Dixon Island – Cleaverville Drilling Project, Pilbara Craton, Western Australia. , Geological Survey of Western Australia, Record 2012/14, 14, 1-39, 2012.05.
13. Ueshiba T., Kiyokawa S., , Long-term observations of iron-oxyhydroxide-rich reddish-brown water in Nagahama Bay, Satsuma Iwo-Jima Island, Kagoshima, Japan, , Memoirs of the faculty of sciences, Kyushu University, Series. D, Earth and Planetary Science,, 2012.05.
14. SHOICHI KIYOKAWA, TOMOMI NINOMIYA, TOMOAKI NAGATA, KAZUMASA OGURI, TAKASHI ITO, MINORU IKEHARA, KOSEI E. YAMAGUCHI, Effects of tides and weather on sedimentation of iron-oxyhydroxides in a
shallow-marine hydrothermal environment at Nagahama Bay, Satsuma
Iwo-Jima Island, Kagoshima, southwest Japan, The Island Arc, doi:10.1111/j.1440-1738.2012.00808, 2012.05.
15. Kiyokawa S., Ito, T., Ikehara, M., Yamaguchi, K.E., Koge S. and Sakamoto, R.,, Lateral variations in the lithology and organic chemistry of a black shale sequence on the Mesoarchean sea floor affected by hydrothermal processes: the Dixon Island Formation of the coastal Pilbara Terrane, Western Australia., The Island Arc, doi:10.1111/j.1440-1738.2012.00811, 2, 1-45, 2012.05.
16. Hisashi Oiwane, Shoichi Kiyokawa, Satoshi Tonai, Yukiyasu Nakamura, Hidekazu Tokuyama, Geomorphological development of the Goto Submarine Canyon, northeastern East China Sea, Marin Geology,, 288, 49-60, 2011.10.
17. Satoshi Tonai, Shoichi Kiyokawa, Yusuke suganuma, Juichiro Ashi, Hisashi Oiwane, Differential timing of vertical-axis block rotations in the northern Ryukyu Arc: Paleomagnetic evidence from the Koshikijima Islands, Japan, Tectonophysics,, 497, 71-84, 2011.01.
18. Yamaguchi K., Kiyokawa S., Ito T., Ikehara M., Kitajima F. and Suganuma Y., Clues of Early life: Dixon Island – Cleaverville Drilling Project (DXCL-dp) in the Pilbara Craton of Western Australia, Scientific Drilling, 7, 34-37, 2009.07.
19. Kiyokawa S. and Yokoyama K, Provenance of turbidite sands from IODP EXP 1301 in the northwestern Cascadia Basin, western North America., Marin geology, 10.1016/j.margeo.2009.01.003, 260, 19-29, 2009.07.
20. Tomomi Ninomiya and Shoichi Kiyokawa, Periodic Measurement of Seawater During a Tidal Cycle in Nagahama Bay, Satsuma Iwo-jima Island, Kagoshima, Japan, Mem. Fac. Sci., Kyushu Univ., Ser. D, Earth & Planet. Sci, 2009.02.
21. Geologic structure and paleostress analysis in the Northern part of Koshikijima Islands, West Kyushu, Japan.
22. ‘The Albion Formation’, the Cretaceous-Tertiary boundary sequence in Belize: the ejecta formation of the nearest sequence from the Chicxulub crater, [URL].
23. Kiyokawa S. T. Ito, M. Ikehara and F. Kitajima, Middle Archean volcano-hydrothermal sequence: bacterial microfossil- bearing 3.2-Ga Dixon Island Formation, coastal Pilbara terrane, Australia., GSA Bulltin, v.118, no.1/2, 2006.01.
24. Shoichi Kiyokawa, A. Taira, T. Byrne, S. Boweing, Y. Sano, Structural evolution of the middle Archean coastal Pilbara terrane, Western Australia, tectonics, 10.1029/2001TC001296, 21, 5, vol.21, No. 5, p. 1-24,, 2002.10.
25. Shoichi, Kiyokawa, R. Tada, M.Iturralde, etc., Cretaceous-Tertiary boundary sequence in the Cacarajicara Formatin, western Cuba: An impact-related, high-energy, gravity flow deposit, Geological Society of America special paper 356, 356, 125-144, 2002.08.
26. Kiyokawa S.,, Geology of the Idonnappu Belt, central Hokkaio, Japan - Evolution of a Cretaceous accretionary complex., Tectonics, vol.11, No. 6, p. 1180-1206, 1992.12.
1. Stratigraphic and Lithological characteristics of the 3.1Ga Cleaverville banded iron Formation: DXCL drilling result in Pilbara Australia..
2. Tectonic-sedimentation reconstruction of Neoproterozoic metavolcanic sequences; the El-Dabbah area, Central Eastern Desert, Egypt.
3. Timing of sedimentation of the Cleaverville Formation, coastal Pilbara terrane, Pilbara, Western Australia: new age dating, identified post-accretion pull-apart system and DXCL drilling result..
4. Kiyokawa, S., Ito, T., Ikehara M., Yamaguchi K. Onoue T., Horie K., Yoshimaru Y., Miki T., Takehara, M. , Tetteh, G.M. ; Nyame, F.K.,, Sedimentary environment and tectonic deformations of the Neoproterozoic Iron formation at the Wadi El-Dabbah greenstone sequence, Central Eastern Desert, Egypt, AGU fall meeting, 2017.12.
5. Kiyokawa, S., Ito, T. , Ikehara M., Yamaguchi K., Onoue T., Horie K., Yoshimaru Y., Miki T., Takehara, M., Tetteh, G.M., Nyame, F.K., Archean-Proterozoic Deeper Oceanic Environment: Pilbara (DXCL), Barbarton (Komati Section) Ghana(GHB) Results., 4th International Geoscience Symposium "Precambrian World 2017" in Fukuoka , 2017.03.
6. Kiyokawa, S., Ito, T., Ikehara M., Yamaguchi K. Onoue T., Horie K., Yoshimaru Y., Miki T., Takehara, M. , Tetteh, G.M. ; Nyame, F.K., , Reconstruction of the Paleoproterozoic deeper ocean environment: Preliminary Report of the Ghana Birimian Greenstone Belt Drilling Project (GHB)., AGU fall meeting, 2016.12.
7. 清川 昌一, Restoreation environment of Archean/Proterozoic Deep Ocean Floor: REAP project., 3rd International Geoscience Symposium: Project A in Korea,, 2015.03, In the earth history, deep sea ocean-floor preserved hint to understand environmental condition in their stratigraphic characteristics and these sediments. When we reconstructed Archean-Proterozoic environments, deep ocean sequence is good key sequence to recognized the surface environment. Many place have been reported of the black chert to Iron rich sediments above volcanic sequence.
Following area, we researched detail about stratigraphy at the oceanic sequence. These area preserved deeper sedimentary environment at that ages.
[Archean] 1) Dixon Island-Cleaverville formations in West Pilbara, Australia, 2) Mappepe Formation in Barberton, South Africa. Especially, we did scientific drilling in Pilbara, which is called “ DXCL drilling project”, at 2007 and 2011 summer.
[Proterozoic] 1) Cape three point, Ashanti belt, Ghana, 2) Cape Smith belt, Quebec, Canada, 3) Flin Flon belt, Manitoba, Canada, 4) El Dabbah iron formation, East Egypt.
A systematic combinations of geological, sedimentological, geochemical, and geobiological approaches will be applied to the fresh samples along the coast, mine and drilling core. We will understand the influence of submarine hydrothermal activity on the biological and chemical evidence and take original depositional environmental information at the time. Here we shows overview of our projects and some result such as DXCL drilling, Mappepe formation and Ghana Greenstone Project.
8. 清川 昌一, 伊藤 孝, Frank K. Nyame, Reconstructed Oceanic Sedimentary Sequence in the Cape Three Points Area, Southern Axim-Konongo (Ashanti) Greenstone Belt in the Paleoproterozoic Birimian of Ghana. , AGU, 2014.12, The Birimian greenstone belt likely formed through collision between the West African and Congo Cratons ~2.2 Ga. Accreted greenstone belts that formed through collision especially during the Palaeoproterozoic are usually not only good targets for preservation of oceanic sedimentary sequences but also greatly help understand the nature of the Paleoproterozoic deeper oceanic environments. In this study, we focused on the coastal area around Cape Three Points at the southernmost part of the Axim-Konongo (Ashanti) greenstone belt in Ghana where excellently preserved Paleoprotrozoic deeper oceanic sedimentary sequences extensively outcrop. Kwtakor zone (> 150m) is the thickest volcaniclastic sequence and has fining upward sections. Akodaa zone (> 150m) consists of finer bed of volcaniclastics with black shales and has fining upward character. This continuous sequence indicate distal portion of submarine volcaniclastic section in an oceanic island arc between the West African and Congo Cratons..
9. 清川 昌一, 伊藤孝, 池原実, 山口耕生, 尾上哲治, 菅沼悠介, 寺司周平, 相原悠平, 三木翼, 32-31億年前の海底堆積層解析:DXCL掘削からみられる海洋環境と縞状鉄鉱層形成., 日本地質学会, 2014.09, .2-3.1 Ga Dixon Island (DX)-Cleaverville (CL) formations are well-preserved black shale to banded iron formation sequences; only affected by low-grade metamorphism without intensive deformation. We performed DXCL drilling projects (Yamaguchi et al., 2009, Kiyokawa et al., 2012a) which had been done two times drillings of DXCL-1 at 2007 and DXCL-2 at 2011. These drilling projects selected two sites; CL site at the CL Formation, and DX site at the upper DX Formation. DXCL result shows coarsening and thickening upward black shale–BIF sequences, representing an oceanic small depression environment that is identified by accreted immature island arc setting (Kiyokawa et al., 2006, 2012b)..
10. 清川 昌一, 伊藤孝, 池原実, 山口耕生, 尾上哲治, 菅沼悠介, 寺司周平, 相原悠平, 三木翼, Mesoarchean oceanic floor environment at sedimentary sequences in the Dixon Island =Cleaverville Formation, Pilbara Australia: results of the DXCL drilling projet. , 21st General Meeting of IMA South Africa 2014,, 2014.09, .2-3.1 Ga Dixon Island (DX)-Cleaverville (CL) formations are well-preserved black shale to banded iron formation sequences; only affected by low-grade metamorphism without intensive deformation. We performed DXCL drilling projects (Yamaguchi et al., 2009, Kiyokawa et al., 2012a) which had been done two times drillings of DXCL-1 at 2007 and DXCL-2 at 2011. These drilling projects selected two sites; CL site at the CL Formation, and DX site at the upper DX Formation. DXCL result shows coarsening and thickening upward black shale–BIF sequences, representing an oceanic small depression environment that is identified by accreted immature island arc setting (Kiyokawa et al., 2006, 2012b)..
11. Shoichi Kiyokawa, T. Ito, M. Ikehara, K.E. Yamaguchi, K. Horie, M. Takehara, S. Aihara, T. Miki, Mesoarchean Banded Iron Formation sequences in Dixon Island-Cleaverville Formation, Pilbara Australia: Oxygenic signal from DXCL project. , AGU, 2013.12, [URL].
12. Shoichi Kiyokawa, T. Ito, M. Ikehara, Y. Aihara, T. Miki, Oceanic sedimentary sequences in Mesoarchean Dixon Island-Cleaverville Formation, Pilbara Australia: Result of DXCL drilling project., Archean symposium, 2013.11.
13. , [URL].
14. 清川 昌一, 伊藤孝, 池原実, 山口耕生, 堀江憲路, 坂本 亮, 竹原 真美, 相原悠平, Reconstructed of mesoarchean oceanic sedimentary environments: result of DXCL drillings, 34th International Geology Congress, 2012.08, [URL].
15. , [URL].
16. , [URL].
17. , [URL].
18. IODP post cruse meeting.
19. International Symposium on Material Science and History of Earth and Sister Planets
March 29-31 2006 Okayama University of Science.
Membership in Academic Society
  • Geological Society of Japan
  • The Society of Resource Geology
  • Sedimentological Society of Japan
  • 学外
  • 学外
  • 学外
  • Geological Society of Japan, Planetary earth photo contest: highest award "2.7 Ga iron mine in Brazil"
Educational Activities
Marine geology
Structural geology
Sedimentary geology
Basic geology
Field geology: introduction of field science I, II, V
Field trip: Shikoku accritionary prism, east Kyushu area, Hawaii Island, Northern Kyushu transect, Miyazaki deep sea sediment, Tsuyazaki-Ashiya, Chikuho Coal,
Other Educational Activities
  • 2019.03, Project A in Okayama. We have student symposium and recent research reports..
  • 2017.03, 4th IGS International Geoscience Symposium, Project A in Fukuoka 2017: Young scientist and student meeting in Project A Symposium in Fukuoka.
  • 2015.03, 3th IGS International Geoscience Symposium Project A in KIGAM: Young scientist and student meeting in Project A Symposium in KIGAM Korea..
  • 2016.03, Projec A in Amami Ooshima: Post doctor, graduate student, undergraduate student and young scientist joint earth science meeting..
  • 2013.03, Project A symposium is for young scientist and students science meeting at Feb or March. We will join several university scientist and students joint and have symoisium and field trips. Place is every year changed.
    2003 Fukuoka; 2004 Kochi: 2005 Aso: 2006 Koshiki jima: 2007 Hawaii; 2008 Goto island; 2009 Fukuoka (ISC1 PW2009); 2010 Izu ooshima;2011 Shimabara Unnzen:2012: Taiwan Keeling Ocean University (ISC2 International Sympo); 2013 Izu Shimoda.
  • 2007.02.
  • 2003.11.
  • 2002.10.
Professional and Outreach Activities
Brighten up of the very cantry island which contains very good geology. I will try to help the country side activity to warm up..