Hirochika Sumino


Research Center for Advanced Science and Technology
The University of Tokyo

4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, JAPAN

Please feel free to contact me at


2022. 4. 13 updated

Throughout my whole academic career, I have been investigating the origins and behaviours of volatiles in the terrestrial mantle by using highly-sensitive, precise noble gas mass spectrometry. I have developed the original ion source and detector for noble gas mass spectrometers to achieve high sensitivity comparable to or even better than commercially-available brand-new mass spectrometers. Particularly, the technique of isotope ratio analysis for all of the five noble gas elements (helium, neon, argon, krypton, and xenon) for a single sample of various types (gases, fluids, rocks, and minerals) using several extraction methods (in vacuo crushing, heating, and laser microprobe) is unique not only in Japan but also in the world. By using the technique, I have revealed the deep-mantle origin of diamonds and kimberlites, traces of subduction-related metasomatism in subcontinental lithospheric mantle, and magmatic volatile distributions in hydrothermal systems around active volcanoes.

While visiting the University of Manchester, the UK in 2006, I learned a technique for trace halogen determination combining neutron irradiation and noble gas mass spectrometry. I applied the method to decipher the origin of water subducted into the mantle at subduction zones. I have revealed that water derived from sedimentary pore fluids is conveyed into the mantle by the subducting oceanic lithosphere and modifies the halogen and noble gas compositions of the mantle wedge down to a 100 km depth.

Recently I have been working on a capability of helium isotope ratios of volcanic and hot-spring gases for volcano monitoring. I am developing a portable mass spectrometer having high sensitivity and mass resolution capable of helium isotope analysis in the field.

An introduction movie of "New volcano monitoring using helium isotope ratio: Next Generation Volcano Research Project"

Educational background

Research and professional experience

Teaching and supervision

Membership of academic societies


Experimental and analytical expertise

  1. Noble gas isotope analysis of minerals in volcanic rocks and mantle xenoliths and of volcanic and hot spring water gases using an in-house modified VG5400 mass spectrometers.

  2. 40Ar-39Ar and I-Xe age determination of terrestrial volcanic rocks and meteorites using an in-house modified VG3600 mass spectrometer.

  3. Halogen determination of minerals in volcanic rocks and mantle peridotites using the MS1 and ARGUS-VI mass spectrometers of Univ. of Manchester.

  4. K-Ar age determination of volcanic rocks using a VG5400 mass spectrometer and flame photometry.

  5. Development of a novel ion source for a noble gas mass spectrometer.

  6. Development of a portable mass spectrometer for on-site helium isotope analysis.

  7. Carbon isotope analysis of volcanic gases using a Finnigan MAT delta-S GC/C/MS.

  8. Determination of oxidation state of laser evaporated iron atoms by Mossbauer spectroscopy.

Publications (Peer-reviewed original papers and reviews)

  1. Shinmura T., Miyoshi M., Sumino H., Ueda Y., Mori Y., Hasenaka T., Arakawa Y. and Nagao K. (2022) K-Ar Ages of Volcanic Rocks from Nekodake Volcano in the Eastern Part of Aso Caldera, Central Kyushu, Japan. Kazan, in press (in Japanese with English abstract).

  2. Grosse P., Guzmán S.R., Nauret F., Orihashi Y. and Sumino H. (2022) Central vs. lateral growth and evolution of the < 100 ka Peinado composite volcano, southern Central Volcanic Zone of the Andes. Journal of Volcanology and Geothermal Research, 425: 107532, doi: 10.1016/j.jvolgeores.2022.107532.

  3. Álvarez-Valero A.M., Sumino H., Burgess R., Núñez-Guerrero E., Okumura S., Borrajo J. and Lozano J.A. (2022) Noble gas variation during partial crustal melting and magma ascent processes. Chemical Geology, 588: 120635, doi: 10.1016/j.chemgeo.2021.120635.

  4. Clay P.L. and Sumino H. (2022) Halogens: Salts of the Earth. Elements, in press.

  5. Dobrzhinetskaya L.F., O'Bannon III E.F. and Sumino H. (2022) Non-cratonic diamonds from UHP metamorphic terranes, ophiolites and volcanic sources. Reviews in Mineralogy and Geochemistry, in press.

  6. Alonso M., Pérez N.M., Hernández P.A., Padrón E., Melián G., Rodríguez F., Padilla G., Barrancos J., Asensio-Ramos M., Fridriksson T. and Sumino H. (2022) Thermal energy and diffuse 4He and 3He degassing released in volcanic-geothermal systems. Renewable Energy, 182, 17-31, doi: 10.1016/j.renene.2021.10.016.

  7. Takenouchi A., Sumino H., Shimodate K. and Yamaguchi A. (2021) Multiple shock events recorded in Northwest Africa 2139 LL 6 chondrite: implications for collisional histories of LL chondrite parent body. Meteoritics & Planetary Science, 12, 2230-2249, doi: 10.1111/maps.13768.

  8. Hernández P.A., Nogami K., Padrón E., Somoza L., Amonte C., Mori T., Melián G., Sumino H. and Pérez N.M. (2021) Hydrochemical and hydroacoustic investigation of Yugama acid crater lake, Kusatsu-Shirane, Japan. Frontiers in Earth Science, 9: 741795, doi: 10.3389/feart.2021.741795.

  9. Toyama C., Sumino H., Okabe N., Ishikawa A., Yamamoto J., Kaneoka I. and Muramatsu Y. (2021) Halogen heterogeneity in the subcontinental lithospheric mantle revealed by I/Br ratios in kimberlites and their mantle xenoliths from South Africa, Greenland, China, Siberia, Canada, and Brazil. American Mineralogist, 106, 1890-1899, doi: 10.2138/am-2021-7332.

  10. Epstein G., Bebout G., Christenson B., Sumino H., Wada I., Werner C. and Hilton D. (2021) Cycling of CO2 and N2 along the Hikurangi subduction margin, New Zealand: An integrated geological, theoretical, and isotopic approach. Geochemistry, Geophysics, Geosystems, 22: e2021GC009650, doi: 10.1029/2021GC009650.

  11. Kobayashi M., Sumino H., Saito T. and Nagao K. (2021) Determination of halogens in geological reference materials using neutron irradiation noble gas mass spectrometry. Chemical Geology, 582: 120420, doi: 10.1016/j.chemgeo.2021.120420.

  12. Melián G.V., Hernández P.A., Pérez N.M., Asensio-Ramos M., Padrón E., Alonso M., Padilla G.D., Barrancos J., Sortino F., Sumino H., Rodríguez F., Amonte C., Silva S., Cardoso N. and Pereira J.M. (2021) Insights from fumarole gas geochemistry on the recent volcanic unrest of Pico do Fogo, Cape Verde. Frontiers in Earth Science, 9: 631190, doi: 10.3389/feart.2021.631190.

  13. Novais-Rodrigues E., Jalowitzki T., Gervasoni F., Sumino H., Bussweiler Y., Klemme S., Berndt J., Conceição R.V., Schilling M.E., Bertotto G. and Teles L. (2021) Partial melting and subduction-related metasomatism recorded by geochemical and isotope (He-Ne-Ar-Sr-Nd) compositions of spinel lherzolite xenoliths from Coyhaique, Chilean Patagonia. Gondwana Research, 98, 257-276, doi: 10.1016/j.gr.2021.06.003.

  14. Alonso M., Pérez N.M., Padrón E., Hernández P.A., Melián G.V., Sumino H., Padilla G.D., Barrancos J., Rodríguez F., Dionis S., Asensio-Ramos M., Amonte C., Silva S. and Pereira J.M. (2021) Changes in the thermal energy and the diffuse 3He and 4He degassing prior to the 2014-2015 eruption of Pico do Fogo volcano, Cape Verde. Journal of Volcanology and Geothermal Research, 416: 107271, doi: 10.1016/j.jvolgeores.2021.107271.

  15. Ganbat A., Pastor-Galán D., Hirano N., Nakamura N., Sumino H., Yamaguchi Y. and Tsujimori T. (2021) Cretaceous to Miocene NW Pacific Plate kinematic constraints: Paleomagnetism and Ar-Ar geochronology in the Mineoka Ophiolite Mélange (Japan). Journal of Geophysical Research: Solid Earth, 126: e2020JB021492, doi: 10.1029/2020JB021492.

  16. Hopfenblatt J., Geyer A., Aulinas M., Álvarez-Valero A.M., Gisbert G., Kereszturi G., Ercilla G., Gómez-Ballesteros M., Márquez A., García-Castellanos D., Pedrazzi D., Sumino H., Höskuldsson A., Giralt S. and Angulo-Preckler C. (2021) Formation of Stanley Patch volcanic cone: New insights into the Evolution of Deception Island Caldera (Antarctica). Journal of Volcanology and Geothermal Research, 415: 107249, doi: 10.1016/j.jvolgeores.2021.107249.

  17. Hernández P.A., Melián G.V., Asensio-Ramos M., Padrón E., Sumino H., Pérez N.M., Padilla G.D., Barrancos J., Rodríguez F., Amonte C., Arcilla C. and Lagmay A. (2021) Geochemical and isotopic evidence of volcanic plumbing system processes from fumarolic gases of Taal volcano, Philippines, prior to the January 2020 eruption. Chemical Geology, 574: 120216, doi: 10.1016/j.chemgeo.2021.120216.

  18. Hirano N., Sumino H., Morishita T., Machida S., Kawano T., Yasukawa K., Hirata T., Kato Y. and Ishii T. (2021) A Paleogene magmatic overprint on Cretaceous seamounts of the western Pacific. Island Arc, 30: e12386, doi: 10.1111/iar.12386.

  19. Yi S.-B., Lee M.J., Park S.-H., Nagao K., Han S., Yang Y.S., Choi H., Baek J. and Sumino H. (2021) Alkalic to tholeiitic magmatism near a mid-ocean ridge: Petrogenesis of the KR1 Seamount Trail adjacent to the Australian-Antarctic Ridge. International Geology Review, 63, 1215-1235, doi: 10.1080/00206814.2020.1756002.

  20. Hirota K., Ichikawa G., Ieki S., Ino T., Iwashita Y., Kitaguchi M., Kitahara R., Koga J., Mishima K., Mogi T., Morikawa K., Morishita A., Nagakura N., Oide H., Okabe H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H.M., Sumi N., Sumino H., Tomita T., Uehara H., Yamada T., Yamashita S., Yano K., Yokohashi M., and Yoshioka T. (2021) Neutron lifetime measurement with pulsed cold neutrons. Progress of Theoretical and Experimental Physics, 2020: 123C02, doi: 10.1093/ptep/ptaa169, arXiv:2007.11293.

  21. Kotarba M., Sumino H. and Nagao K. (2020) Origin of hydrocarbon and noble gases, carbon dioxide and molecular nitrogen in the Miocene strata of the eastern part of the Polish Carpathian Foredeep: isotopic and geological approach. Applied Geochemistry, 122: 104732, doi: 10.1016/j.apgeochem.2020.104732.

  22. Grosse P., Ramacciotti M.L.O, Fochi M.F.E, Guzmán S., Orihashi Y. and Sumino H. (2020) Geomorphology, morphometry, spatial distribution and age of mafic monogenetic volcanoes of the Peinado and Incahuasi fields, southernmost Central Volcanic Zone of the Andes. Journal of Volcanology and Geothermal Research, 401: 106966, doi: 10.1016/j.jvolgeores.2020.106966.

  23. Álvarez-Valero A.M., Gisbert G., Aulinas M., Geyer A., Kereszturi G., Polo-Sánchez A., Núñez-Guerrero E. and Sumino H. (2020) δD and δO variations of the magmatic system beneath Deception Island volcano (Antarctica): implications for magma ascent and eruption forecasting. Chemical Geology, 542: 119595, doi: 10.1016/j.chemgeo.2020.119595.

  24. Nishiyama N., Sumino H. and Ujiie K. (2020) Slow earthquakes under fluid overpressure caused by mantle-derived fluids. Earth and Planetary Science Letters, 538: 116199, doi: 10.1016/j.epsl.2020.116199.

  25. Burgess R., Goldsmith S.L., Sumino H., Gilmour J.D., Marty B., Pujol M. and Konhauser K.O. (2020) Archean to Paleoproterozoic seawater halogen ratios recorded by fluid inclusions in chert and hydrothermal quartz. American Mineralogist, 105, 1317-1325, doi: 10.2138/am-2020-7238.

  26. Morishita T., Hirano N., Sumino H., Sato H., Shibata T., Yoshikawa M., Arai S., Nauchi R. and Tamura A. (2020) Alkali basalt from the Seifu Seamount in the Sea of Japan: post-spreading magmatism in a back-arc setting, Solid Earth, 11, 23-36, doi: 10.5194/se-11-23-2020.

  27. Melián G.V., Pérez N.M., Mora Amador R.A., Hernández P.A., Ramírez C., Sumino H., Alvarado G.E. and Fernández M. (2019) Diffuse CO2 degassing and thermal energy release from Poás Volcano, Costa Rica, in: Tassi, F., Vaselli, O., Mora Amador, R.A. (Eds.), Poás Volcano: The Pulsing Heart of Central America Volcanic Zone. Springer International Publishing, Cham, pp. 135-154, doi: 10.1007/978-3-319-02156-0_6.

  28. Hirano N., Machida S., Sumino H., Shimizu K., Tamura A., Morishita T., Iwano H., Sakata S., Ishii T., Arai S., Yoneda S., Danhara T. and Hirata T. (2019) Petit-spot volcanoes on the oldest portion of the Pacific plate. Deep-Sea Research Part I, 154: 103142, doi: 10.1016/j.dsr.2019.103142.

  29. Bernardi M.I., Bertotto G.W., Orihashi Y., Sumino H. and Ponce A.D. (2019) Volcanología y geocronología de extensos flujos basálticos neógeno cuaternarios del sureste de Payenia, centro-oeste de Argentina. Andean Geology, 46, 490-525, doi: 10.5027/andgeoV46n3-3181 (in Spanish with English abstract).

  30. Kitahara R., Hirota K., Ieki S., Ino T., Iwashita Y., Kitaguchi M., Koga J., Mishima K., Morishita A., Nagakura N., Oide H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H.M., Sumi N., Sumino H., Taketani K., Tomita T., Yamada T., Yamashita S., Yokohashi M. and Yoshioka T. (2019) Improved determination of thermal cross section of 14N(n,p)14C for the neutron lifetime measurement at J-PARC. Progress of Theoretical and Experimental Physics, 2019: 093C01, doi: 10.1093/ptep/ptz096.

  31. Kotarba M., Sumino H., and Nagao K. (2019) Origin of hydrocarbon and noble gases, carbon dioxide and molecular nitrogen in Devonian, Pennsylvanian and Miocene strata of the Polish Lublin and Ukrainian Lviv basins, southern part of the Upper Silesian Coal Basin and western part of the Carpathian Foredeep (Poland). Applied Geochemistry, 108: 104371, doi: 10.1016/j.apgeochem.2019.104371.

  32. Bernardi M.I., Bertotto G.W., Ponce A.D., Orihashi Y. and Sumino H. (2019) Volcanology and inflation of an extensive basaltic lava flow in the Payenia Volcanic Province, extra-Andean back arc of Argentina. Andean Geology, 46, 279-299, doi: 10.5027/andgeoV46n2-3180.

  33. Alonso M., Padrón E., Sumino H., Hernández P.A., Melián G.V., Asensio-Ramos M., Rodríguez F., Padilla G., García-Merino M, Amonte C. and Perez N.M. (2019) Heat and helium-3 fluxes from Teide volcano, Canary Islands, Spain. Geofluids, Article ID 3983864, doi: 10.1155/2019/3983864.

  34. Kobayashi M., Sumino H., Burgess R., Nakai S., Iizuka T., Nagao J., Kagi H., Nakamura M., Takahashi E., Kogiso T. and Ballentine C.J. (2019) Halogen heterogeneity in the lithosphere and evolution of mantle halogen abundances inferred from intraplate mantle xenoliths. Geochemistry, Geophysics, Geosystems, 20, 952-973, doi: 10.1029/2018GC007903.

  35. Broadley M.W., Sumino H., Graham D.W., Burgess R. and Ballentine C.J. (2019) Recycled components in mantle plumes deduced from variations in halogens (Cl, Br, and I), trace elements, and 3He/4He along the Hawaiian-Emperor seamount chain. Geochemistry, Geophysics, Geosystems, 20, 277-294, doi: 10.1029/2018GC007959.

  36. Seki K., Ohba T., Aoyama S., Ueno Y., Kanda W., Sumino H., Yaguchi M. and Tanbo T. (2019) Variations in thermal state revealed by the geochemistry of fumarolic gases and hot-spring waters of the Tateyama volcanic hydrothermal system, Japan. Bulletin of Volcanology, 81: 8, doi: 10.1007/s00445-018-1264-7.

  37. Mishima K., Sumino H., Yamada T., Ieki S., Nagakura N., Otono H. and Oide H. (2018) Accurate determination of the absolute 3He/4He ratio of a synthesized helium standard gas (Helium Standard of Japan, HESJ): Towards revision of the atmospheric 3He/4He ratio. Geochemistry, Geophysics, Geosystems, 19, 3995-4005, doi: 10.1029/2018GC007554.

  38. Broadley M.W., Kagi H., Burgess R., Zedgenizov D., Mikhail S., Almayrac M., Ragozin A., Pomazansky B. and Sumino H. (2018) Plume-lithosphere interaction, and the formation of fibrous diamonds. Geochemical Perspectives Letters, 8, 26-30, doi: 10.7185/geochemlet.1825.

  39. Grosse P., Orihashi Y., Guzmán S.R., Sumino H. and Nagao K. (2018) Eruptive histories of Incahuasi, Falso Azufre and El Cóndor Quaternary composite volcanoes, southern Central Andes. Bulletin of Volcanology, 80: 44, doi: 10.1007/s00445-018-1221-5.

  40. Sumino H., Kishi S., Nomura R., Mibe K., Tateno S. and Kagi H. (2017) Constraints on primordial noble gas reservoir deep in the Earth by high-pressure and high-temperature experiments. The Review of High Pressure Science and Technology, 27, 266-277 (in Japanese with English abstract).

  41. Álvarez-Valero A.M., Burgess R., Recio C., de Matos V., Sánchez-Guillamón O., Gómez-Ballesteros M., Recio G., Fraile-Nuez E., Sumino H., Flores J.A., Ban M., Geyer A., Bárcena M.A., Borrajo J. and Compaña J.M. (2017) Noble gas signals in corals predict submarine volcanic eruptions. Chemical Geology, 480, 28-34, doi: 10.1016/j.chemgeo.2017.05.013.

  42. Jalowitzki T., Gervasoni F., Conceição R.V., Orihashi Y., Bertotto G.W., Sumino H., Schilling M., Nagao K., Morata D., Sylvester P. (2017) Slab-derived components in the subcontinental lithospheric mantle beneath Chilean Patagonia: Geochemistry and Sr-Nd-Pb isotopes of mantle xenoliths and host basalt. Lithos, 292-293, 179-197.

  43. Medialdea T., Somoza L., González F.J., Vázquez J.T., de Ignacio C., Sumino H., Sánchez-Guillamón O., Orihashi Y., León R. and Palomino D. (2017) Evidence of a modern deep-water magmatic hydrothermal system in the Canary Basin (Eastern Central Atlantic Ocean). Geochemistry, Geophysics, Geosystems, 18, doi: 10.1002/2017GC006889.

  44. Jensen K.R., Hondo T., Sumino H. and Toyoda M. (2017) Instrumentation and method development for on-site analysis of helium isotopes. Analytical Chemistry, 89, 7535-7540, doi: 10.1021/acs.analchem.7b01299.

  45. Álvarez-Valero A.M., Burgess R., Recio C., de Matos V., Sánchez-Guillamón O., Gómez-Ballesteros M., Recio G., Fraile-Nuez E., Sumino H., Flores J.A., Ban M., Geyer A., Bárcena M.A., Borrajo J. and Compaña J.M. (2017) Noble gas signals in corals predict submarine volcanic eruptions. Chemical Geology, 480, 28-34, doi: 10.1016/j.chemgeo.2017.05.013.

  46. Hernández P.A., Melián G.V., Somoza L., Pérez N.M., Sumino H., Carmencita Arpa M., Varekamp J.C., Bariso E., Padrón E., Albert-Beltran J. and Solidum R. (2017) The acid crater lake of Taal Volcano, Philippines: hydrogeochemical and hydroacoustic data related to the 2010-2011 volcanic unrest. Geochemistry and Geophysics of Active Volcanic Lakes (Geological Society, London, Special Publications, 437), 131-152, doi: 10.1144/SP437.17.

  47. Kobayashi M., Sumino H., Nagao K., Ishimaru S., Arai S., Yoshikawa M., Kawamoto T., Kumagai Y., Kobayashi T., Burgess R. and J Ballentine C.J. (2017) Slab-derived halogens and noble gases illuminate closed system processes controlling volatile element transport into the mantle wedge. Earth and Planetary Science Letters, 457, 106-116.

  48. Melián G.V., Somoza L., Padrón E., Pérez N.M., Hernández P.A., Sumino H., Forjaz V. and França Z. (2017) Surface CO2 emission and rising bubble plumes from degassing of crater lakes in São Miguel Island, Azores. Geochemistry and Geophysics of Active Volcanic Lakes (Geological Society, London, Special Publications, 437), 233-252, doi: 10.1144/SP437.14.

  49. Jalowitzki T., Sumino H., Conceição R.V., Orihashi Y., Nagao K.,Bertotto G.W., Balbinot E., Schilling M. and Gervasoni F. (2016) Noble gas composition of subcontinental lithospheric mantle: an extensively degassed reservoir beneath Southern Patagonia. Earth and Planetary Science Letters, 450, 263-273.

  50. Chavrit D., Burgess R., Sumino H., Teagle D.A.H., Droop G., Shimizu A. and Ballentine C.J. (2016) The contribution of the hydrothermal alteration of the ocean crust on the deep halogen and noble gas cycles. Geochimica et Cosmochimica Acta, 183, 106-124.

  51. Morikawa N., Kazahaya K., Takahashi M., Inamura A., Takahashi H.A., Yasuhara M., Ohwada M., Sato T., Nakama A., Handa H., Sumino H. and Nagao K. (2016) 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. Geochimica et Cosmochimica Acta, 182, 173-196.

  52. Park J., Jeong C.H., Nagao K., Yang J.H., Sumino H., Kim K.H., Kim M.S., Lee J.I., Park C.H., Koh Y.K. and Hur S.D. (2016) Hydrochemistry and noble gas geochemistry of geothermal waters in Chungcheong Province, South Korea. Geochemical Journal, 50, 89-103, doi: 10.2343/geochemj.2.0388.

  53. Aizawa K., Sumino H., Uyeshima M., Yamaya Y., Hase H., Takahashi M., Kazahaya K., Ohno M., Rung-Arunwan T. and Ogawa Y. (2016) Gas pathways and remotely triggered earthquakes beneath Mt. Fuji, Japan. Geology, 44, 127-130, doi: 10.1130/G37313.1.

  54. Nagakura N., Hirota K., Ieki S., Ino T., Iwashita Y., Kitaguchi M., Kitahara R., Mishima K., Morishita A., Oide H., Otono H., Sakakibara R., Seki Y., Shima T., Shimizu H.M., Sugino T., Sumi N., Sumino H., Taketani K., Tanaka G., Tomita T., Yamada T., Yamashita S., Yokohashi M. and Yoshioka T. (2016) Precise neutron lifetime experiment using pulsed neutron beams at J-PARC. Proceedings of Science, 2016-September: 191.

  55. Sumino H. (2015) History and current status of noble gas mass spectrometry to develop new ideas based on study of the past. Journal of the Mass Spectrometry Society of Japan, 63, 1-30 (in Japanese with English abstract).

  56. Kobayashi M., Sumino H. and Toyama C. (2015) Traces of slab-derived fluids revealed by halogens in mantle-derived rocks. Journal of Geography (Chigaku Zasshi), 124, 445-471 (in Japanese with English abstract).

  57. Marrero-Diaz R., López D., Pérez N.M., Custodio E., Sumino H., Melián G.V., Padrón E., Hernández P.A., Calvo D., Barrancos J., Padilla G. and Sortino F. (2015) Carbon dioxide and helium dissolved gases in groundwater at central Tenerife Island, Canary Islands: chemical and isotopic characterization. Bulletin of Volcanology, 77: 86, doi: 10.1007/s00445-015-0969-0.

  58. Arimoto Y., Higashi N., Igarashi Y., Iwashita Y., Ino T., Katayama R., Kitahara R., Kitaguchi M., Matsumura H., Mishima K., Oide H. Otono H. Sakakibara R., Shima T., Shimizu H.M., Sugino N., Sumi N., Sumino H., Taketani K., Tanaka G., Tanaka M., Tauchi K., Toyoda A., Yamada T., Yamashita S., Yokoyama H. and Yoshioka T. (2015) Development of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams. Nuclear Instruments and Methods in Physics Research, A, 799, 187-196, arXiv:1503.07936.

  59. Padrón E., Hernández P.A., Carmona E., Pérez N.M., Melián G., Sumino H., Almendros J., Kusakabe M., Wakita H. and Padilla G.D. (2015) Geochemical evidences of different sources of long-period seismic events at Deception volcano, South Shetland Islands, Antarctica. Antarctic Science, 27, 557-565, doi: 10.1017/S0954102015000346.

  60. Machida S., Hirano N., Sumino H., Hirata T., Yoneda S. and Kato Y. (2015) Petit-spot geology reveals melts in upper-most asthenosphere dragged by lithosphere. Earth and Planetary Science Letters, 426, 267-279.

  61. Pérez N.M., Somoza L., Hernández P.A., de Vallejo L.G., León R., Sagiya T., Biain A., González F.J., Medialdea T., Barrancos J., Ibáñez J., Sumino H., Nogami K. and Romero C. (2015) Reply to comment from Blanco et al. (2015) on "Evidence from acoustic imaging for submarine volcanic activity in 2012 off the west coast of El Hierro (Canary Islands, Spain) by Pérez et al. [Bull. Volcanol. (2014), 76: 882-896]. Bulletin of Volcanology, 77: 63, doi: 10.1007/s00445-015-0948-5.

  62. Calabozo F.M., Strelin J.A., Orihashi Y., Sumino H. and Keller R.A. (2015) Volcano-ice-sea interaction in the Cerro Santa Marta area, northwest James Ross Island, Antarctic Peninsula. Journal of Volcanology and Geothermal Research, 297, 89-108, doi: 10.1016/j.jvolgeores.2015.03.011.

  63. Dionis S.D., Pérez N. M., Hernández P.A., Melián G., Rodríguez F., Padrón E., Sumino H., Barrancos J., Padilla G.D., Fernandes P., Bandomo Z., Silva S., Pereira J.M., Semedo H. and Cabral J. (2015) Diffuse CO2 degassing and volcanic activity at Cape Verde islands, West Africa. Earth, Planets and Space, 67: 48, doi: 10.1186/s40623-015-0219-x.

  64. Padrón E., Pérez N. M., Rodríguez F., Melián G., Hernández P.A., Sumino H., Padilla G.D., Barrancos J., Dionis S., Notsu K. and Calvo D. (2015) Dynamics of diffuse carbon dioxide emissions from Cumbre Vieja volcano, La Palma, Canary Islands. Bulletin of Volcanology, 77: 28, doi: 10.1007/s00445-015-0914-2.

  65. Dionis S.D., Melián G., Rodríguez F., Hernández P.A., Padrón E., Pérez N.M., Barrancos J., Padilla G., Sumino H., Fernandes P., Bandomo Z., Silva S.V., Pereira J.M. and Semedo H. (2015) Diffuse volcanic gas emission and thermal energy release from the summit crater of Pico do Fogo, Cape Verde. Bulletin of Volcanology, 77: 10, doi: 10.1007/s00445-014-0897-4.

  66. Pérez N.M., Somoza L., Hernández P.A., de Vallejo L.G., León R., Sagiya T., Biain A., González F.J., Medialdea T., Barrancos J., Ibáñez J., Sumino H., Nogami K. and Romero C. (2014) Evidence from acoustic imaging for submarine volcanic activity in 2012 off the west coast of El Hierro (Canary Islands, Spain). Bulletin of Volcanology, 76: 882, doi: 10.1007/s00445-014-0882-y.

  67. Notsu K., Sohrin R., Wada H., Tsuboi T., Sumino H., Mori T., Tsunogai U., Hernandez P.A., Suzuki Y., Ikuta R., Oorui K., Koyama M., Masuda T. and Fujii N. (2014) Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan. Journal of Volcanology and Geothermal Research, 270, 90-98.

  68. Miyoshi M., Shinmura T., Sumino H., Sano T., Miyabuchi Y., Mori Y., Furukawa K., Uno K., Hasenaka T., Nagao K., Arakawa Y. and Yamamoto J. (2013) Lateral magma intrusion from accumulated caldera-forming magma chamber: Constraints from geochronology and geochemistry of volcanic products from lateral cones around Aso caldera, SW Japan. Chemical Geology, 352, 202-210, doi: 10.1016/j.chemgeo.2013.06.003.

  69. Orihashi Y., Anma R., Motoki A., Haller M.J., Hirata D., Iwano H., Sumino H. and Ramos V.A. (2013) Evolution history of the crust underlying Cerro Pampa, Argentine Patagonia: Constraint from LA-ICPMS U-Pb ages for exotic zircons in the Mid-Miocene adakite. Geochemical Journal, 47, 235-247.

  70. Padrón E., Pérez N.M., Hernández P.A., Sumino H., Melián G.V., Barrancos J., Nolasco D., Padilla G., Dionis S., Rodríguez F., Hernández I., Calvo D., Peraza M.D. and Nagao K. (2013) Diffusive helium emissions as a precursory sign of volcanic unrest. Geology, 41, 539-542, doi:10.1130/G34027.1.

  71. Sumino H. (2012) Subduction of volatiles into the Earth's mantle. Chikyukagaku (Geochemistry), 46, 149-170 (in Japanese with English abstract).

  72. Bajo K., Sumino H., Toyoda M., Okazaki R., Osawa T., Ishihara M., Katakuse I., Notsu K., Igarashi G. and Nagao K. (2012) Construction of a newly designed small-size mass spectrometer for helium isotope analysis: Toward the continuous monitoring of 3He/4He ratios in natural fluids. Mass Spectrometry, 1, A0009, doi:10.5702/massspectrometry.A0009.

  73. Hernández P.A., Padilla G., Padrón E., Pérez N.M., Calvo D., Nolasco D., Melián G., Barrancos J., Dionis S., Rodríguez F. and Sumino H. (2012) Analysis of long- and short-term temporal variations of the diffuse CO2 emission from Timanfaya volcano, Lanzarote, Canary Islands. Applied Geochemistry, 27, 2486-2499, doi:10.1016/j.apgeochem.2012.08.008.

  74. Kim K.H., Lee S., Nagao K., Sumino H., Yang K. and Lee J.I. (2012) He-Ar-H-O isotopic signatures in Au-Ag bearing ore fluids of the Sunshin epithermal gold-silver ore deposits, South Korea. Chemical Geology, 320-321, 128-139.

  75. Melián G., Tassi F., Pérez N., Hernández P., Sortino F., Vaselli O., Padrón E., Nolasco D., Barrancos J., Padilla G., Rodríguez F., Dionis S., Calvo D., Notsu K. and Sumino H. (2012) A magmatic source for fumaroles and diffuse degassing from the summit crater of Teide Volcano (Tenerife, Canary Islands): a geochemical evidence for the 2004-2005 seismic-volcanic crisis. Bulletin of Volcanology, 74, 1465-1483, doi:10.1007/s00445-012-0613-1.

  76. Ishibashi H., Kagi H., Sakurai H., Ohfuji H. and Sumino H. (2012) Hydrous fluid as the growth media of natural polycrystalline diamond, carbonado: implication from IR spectra and microtextural observations. American Mineralogist, 97, 1366-1372.

  77. Padrón E., Pérez N.M., Hernández P.A., Sumino H., Melián G., Barrancos J., Nolasco D. and Padilla G. (2012) Helium emission at Cumbre Vieja volcano, La Palma, Canary Islands. Chemical Geology, 312-313, 138-147.

  78. Padrón E., Hernández P.A., Pérez N.M., Toulkeridis T., Melián G., Barrancos J., Virgili G., Sumino H. and Notsu K. (2012) Fumarole/plume and diffuse CO2 emission from Sierra Negra caldera, Galapagos archipelago. Bulletin of Volcanology, 74, 1509-1519, doi:10.1007/s00445-012-0610-4.

  79. Miyoshi M., Sumino H., Miyabuchi Y., Shinmura T., Mori Y., Hasenaka T., Furukawa K., Uno K. and Nagao K. (2012) K-Ar ages determined for post-caldera volcanic products from Aso volcano, central Kyushu, Japan. Journal of Volcanology and Geothermal Research, 229-230, 64-73, doi:10.1016/j.jvolgeores.2012.04.003.

  80. Kita I., Asakawa Y., Yuri T., Yasui M., Shimoike Y., Yamamoto M., Hasegawa H., Taguchi S. and Sumino H. (2012) Rifting of Kyushu, Japan, based on the fault-controlled concurrent eruption of oceanic island basalt type and island-arc type lavas. Bulletin of Volcanology, 74, 1121-1139, doi:10.1007/s00445-012-0587-z.

  81. Sumino H., Dobrzhinetskaya L.F., Burgess R. and Kagi H. (2011) Deep-mantle-derived noble gases in metamorphic diamonds from the Kokchetav massif, Kazakhstan. Earth and Planetary Science Letters, 307, 439-449.

  82. Hernández P.A., Mori T., Padrón E., Sumino H. and Pérez N. (2011) Carbon dioxide from Katanuma volcanic lake, Japan. Earth, Planets and Space, 63, 1151-1156.

  83. Bajo K., Akaida T., Ohashi N., Noguchi T., Nakamura T., Nakamura Y., Sumino H. and Nagao K. (2011) Single grain noble gas analysis of Antarctic micrometeorites by stepwise heating method with a newly constructed miniature furnace. Earth, Planets and Space, 63, 1097-1111.

  84. Sumino H., Burgess R., Mizukami T., Wallis S.R., Holland G. and Ballentine C.J. (2010) Seawater-derived noble gases and halogens preserved in exhumed mantle wedge peridotite. Earth and Planetary Science Letters, 294, 163-172.

  85. Dogan T., Sumino H., Nagao K., Notsu K., Tuncer M.K. and Celik C. (2009) Adjacent releases of mantle helium and soil CO2 from active faults: Observations from the Marmara region of the North Anatolian Fault zone, Turkey. Geochemistry Geophysics Geosystems, 10, Q11009, doi:10.1029/2009GC002745.

  86. Folguera A., Naranjo J.A., Orihashi Y., Sumino H., Nagao K., Polanco E. and Ramos V.A. (2009) Retroarc volcanism in the northern San Rafael Block (34°-35°30'S), Southern Central Andes: Occurrence, age, and tectonic setting. Journal of Volcanology and Geothermal Research, 186, 169-185.

  87. Sakuyama T., Ozawa K., Sumino H. and Nagao K. (2009) Progressive melt extraction from upwelling mantle constrained by the Kita-Matsuura basalts in NW Kyushu, SW Japan. Journal of Petrology, 50, 725-779.

  88. Sumino H., Ikehata K., Shimizu A., Nagao K. and Nakada S. (2008) Magmatic processes of Unzen volcano revealed by excess argon distribution in zero-age plagioclase phenocrysts. Journal of Volcanology and Geothermal Research, 175, 189-207.

  89. Sun J., Zhao J., Chen J., Nagao K., Sumino H., Shen K., Men L. and Chen L. (2008) Ore-forming mechanism for the Xiaoxinancha Au-rich Cu deposit in Yanbian, Jilin Province, China: Evidence from noble gas isotope geochemistry of fluid inclusions in minerals. Science in China Series D: Earth Sciences, 51, 216-228.

  90. Kim K.H., Nagao K., Sumino H., Tanaka T., Hayashi T., Nakamura T. and Lee J.I. (2008) He-Ar and Nd-Sr isotopic compositions of late Pleistocene felsic plutonic back arc basin rocks from Ulleungdo volcanic island, South Korea: implications for the genesis of young plutonic rocks in a back arc basin. Chemical Geology, 253, 180-195.

  91. Perez N.M., Hernandez P.A., Igarashi G., Trujillo I., Nakai S., Sumino H. and Wakita H. (2008) Searching and detecting earthquake geochemical precursors in CO2-rich groundwaters from Galicia, Spain. Geochemical Journal, 42, 75-83.

  92. Morikawa N., Kazahaya K., Masuda H., Ohwada M., Nakama A., Nagao K. and Sumino H. (2008) Relationship between geological structure and helium isotopes in deep groundwater from the Osaka Basin: Application to deep groundwater hydrology. Geochemical Journal, 42, 61-74.

  93. Sumino H., Kaneoka I., Matsufuji K. and Sobolev A.V. (2006) Deep mantle origin of kimberlite magmas revealed by neon isotopes. Geophysical Research Letters, 33, L16318, doi:10.1029/2006GL027144.

  94. Dogan T., Sumino H., Nagao K. and Notsu K. (2006) Release of mantle helium from forearc region of the Southwest Japan arc. Chemical Geology, 233, 235-248.

  95. Honda S., Orihashi Y., Mibe K., Motoki A., Sumino H. and Haller M.J. (2006) Mantle wedge deformation by subducting and rotating slab and its possible implication. Earth, Planets and Space, 58, 1087-1092.

  96. Sumino H., Yamamoto J. and Kumagai H. (2005) Noble gas studies of mantle-derived xenoliths: mantle metasomatism revealed by noble gas isotopes - a review. Japanese magazine of mineralogical and petrological sciences, 34, 173-185.

  97. Fischer T.P., Takahata N., Sano Y., Sumino H. and Hilton D.R. (2005) Nitrogen isotopes of the mantle: insights from mineral separates. Geophysical Research Letters, 32, L11305.

  98. Kim K.H., Nagao K., Tanaka T., Sumino H., Nakamura T., Okuno M., Lock J.B., Youn J.S. and Song J. (2005) He-Ar and Nd-Sr isotopic compositions of ultramafic xenoliths and host alkali basalts from the Korean peninsula. Geochemical Journal, 39, 341-356.

  99. Morikawa N., Kazahaya K., Yasuhara M., Inamura A., Nagao K., Sumino H. and Ohwada M. (2005) Estimation of groundwater residence time in a geologically active region by coupling 4He concentration with helium isotopic ratios. Geophysical Research Letters, 32, L02406.

  100. Shimizu A., Sumino H., Nagao K., Notsu K. and Mitropoulos P. (2005) Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece. Journal of Volcanology and Geothermal Research, 140, 321-339.

  101. Notsu K., Sugiyama K., Hosoe M., Uemura A., Shimoike Y., Tsunomori F., Sumino H., Yamamoto J., Mori T. and Hernandez P.A. (2005) Diffuse CO2 efflux from Iwojima volcano, Izu-Ogasawara arc, Japan. Journal of Volcanology and Geothermal Research, 139, 147-161.

  102. Salazar J.M.L., Hernandez P.A., Perez N.M., Olmos R., Barahona F., Cartagena R., Soriano T., Lopez D.L., Sumino H. and Notsu K. (2004) Spatial and temporal variations of diffuse CO2 degassing at the Santa Ana-Izalco-Coatepeque volcanic complex, El Salvador, Central America. Natural hazards in El Salvador (edited by Rose W.I., Bommer J.J., Lopez D.L., Carr M.J. and Major J.J.) GSA Special Paper, 375, 135-146.

  103. Orihashi Y., Naranjo J.A., Motoki A., Sumino H., Hirata D., Anma R. and Nagao K. (2004) Quaternary volcanic activity of Hudson and Lautaro volcanoes, Chilean Patagonia: New constraints from K-Ar ages. Revista Geologica de Chile, 31, 207-224.

  104. Ebisawa N., Sumino H., Okazaki R., Takigami Y., Hirano N., Nagao K. and Kaneoka I. (2004) Construction of I-Xe and 40Ar-39Ar dating system using a modified VG3600 mass spectrometer and the first I-Xe data obtained in Japan. Journal of the Mass Spectrometry Society of Japan, 52, 219-229.

  105. Sumino H., Notsu K., Nakai S., Sato M., Nagao K., Hosoe M. and Wakita H. (2004) Noble gas and carbon isotopes of fumarolic gas from Iwojima volcano, Izu-Ogasawara arc, Japan: implications for the origin of unusual arc magmatism. Chemical Geology, 209, 153- 173.

  106. Aka F.T., Nagao K., Kusakabe M., Sumino H., Tanyileke G., Ateba B. and Hell J. (2004) Symmetrical helium isotope distribution on the Cameroon Volcanic Line, West Africa. Chemical Geology, 203, 205-223.

  107. Nishio Y., Nakai S., Yamamoto J., Sumino H., Matsumoto T., Prikhod'ko V.S. and Arai S. (2004) Lithium isotopic systematics of the mantle-derived ultramafic xenoliths: implications for EM1 origin. Earth and Planetary Science Letters, 217, 245-261.

  108. Salazar J.M.L., Perez N.M., Hernandez P.A., Soriano T., Barahona F.B., Olmos R., Cartagena R., Lopez D.L., Lima N., Melian G., Galindo I., Padron E., Sumino H. and Notsu K. (2002) Precursory diffuse carbon dioxide degassing signature related to a 5.1 magnitude earthquake in El Salvador, Central America. Earth and Planetary Science Letters, 205, 81-89.

  109. Matsuda J., Matsumoto T., Sumino H., Nagao K., Yamamoto J., Miura Y., Kaneoka I., Takahata N. and Sano Y. (2002) The 3He/4He ratio of the new internal He Standard of Japan (HESJ). Geochemical Journal, 36, 191-195.

  110. Sumino H., Nagao K. and Notsu K. (2001) Highly sensitive and precise measurement of helium isotopes using a mass spectrometer with double collector system. Journal of the Mass Spectrometry Society of Japan, 49, 61-68.

  111. Sumino H., Nakai S., Nagao K. and Notsu K. (2000) High 3He/4He ratio in xenoliths from Takashima: evidence for plume type volcanism in southwestern Japan. Geophysical Research Letters, 27, 1211-1214.

  112. Yamada Y., Sumino H., Okamura Y., Shimasaki H. and Tominaga T. (2000) Mossbauer studies on laser evaporated iron atoms and their reactions with oxygen in argon matrices. Applied Radiation and Isotopes, 52, 157-164.

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