Presentations

International meeting

  1. S. Miyake, T. Matsumoto, R. Kataoka, T. Sato, D. Shiota, H. Miyahara, S. Imada, H. Ueno, Grand Minimum 7 (Gm7) for the Study of Solar Wind and Cosmic Ray Modulation During Extremely Weak Solar Cycle, AGU fall meeting, 2018.
  2. H. Miyahara et al., Solar 27-day Rotational Period Detected in Wide-area Lightning Activity in Japan, AOGS, Hawaii, 5 June 2018 (poster).
  3. H. Miyahara et al., Variation of Relative Humidity in Central Japan During the Little Ice Age and its Relation to Solar Activity, AOGS, Hawaii, 5 June 2018 (poster).
  4. Miyake, S.; Kataoka, R.; Sato, T.; Imada, S.; Miyahara, H.; Shiota, D.; Matsumoto, T.; Ueno, H., Cosmic Ray Modulation and Radiation Dose of Aircrews During Possible Grand Minimum,  AGU fall meeting, 2017.
  5. K. Horiuchi, H. Miyahara et al., Measurement of beryllium-10 in endogenic travertine deposits at Baishuitai, China: A pilot study, The 14th International Conference on Accelerator Mass Spectrometry, 2017
  6. H. Miyahara et al., Investigating the cosmic-ray impact on climate in the past, 1st PSTEP International Symposium, Nagoya, 13-14 Jan., 2016.
  7. H. Miyahara et al., Characteristic Variations of Cosmic Rays During the Maunder Minimum and Their Possible Influence on Climate, AOGS, Singapore, 7. Aug. 2015. 招待講演
  8. H. Miyahara et al., Measurement of Carbon-14 Content in Tree Rings from the Last Glacier Maximum, AOGS, Singapore, 4. Aug. 2015. (poster)
  9. H. Miyahara, K. Horiuchi, Y. Yokoyama, H. Matsuzaki, H. Motoyama, F. Tokanai, K. Kato, M. Anshita, Periodic cosmic‐ray spikes at the Maunder Minimum indicated by the Be‐10 content in Greenland and Antarctic Ice cores, Thirteenth International Solar Wind Conference, Hawaii, 17-22 June, 2012. (poster)
  10. H. Miyahara, Y.T. Yamaguchi, W. Sakashita, Y. Yokoyama, T. Nakatsuka, Y. Aono, M. Morales, Importance of heliospheric environment as a parameter to determine the multi‐decadal variations of terrestrial climate, Thirteenth International Solar Wind Conference, Hawaii, 17-22 June, 2012. (poster)
  11. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi et al., Variations of Solar and Cosmic Ray Cycles at the Maunder Minimum, IAU Symposium 286, Mendoza, Argentina, 3-7 October, 2011. 招待講演
  12. H. Miyahara et al., Decadal Variations of Solar Magnetic Field, Heliosphere and the Cosmic Rays, and Their Impact on Climate Change, SORCE Science Meeting, Sedona, Arizona, 13-16 Sept., 2011.
  13. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi et al., Influence of the 27-day Solar Rotational Period on Tropical Convective Cloud Activity, AOGS Meeting, Taipei, Taiwan, 8-12 Aug. 2011.招待講演
  14. H. Miyahara, Y. Yokoyama,Y. T. Yamaguchi, H. Matsuzaki, T. Nakatsuka, Variability of cosmic rays and its influence on climate change at the multi-decadal time scale, COSPAR meeting, Bremen, Germany, July, 2010.
  15. H. Miyahara, Y. Yokoyama, K. Horiuchi, S. Fallon, H. Matsuzaki, Long-term Variation of Solar Activity Level during the Past 7000 Years , Asia Oceania Geosciences Society meeting, Hyderabad, India, July, 2010. 招待講演
  16. H. Miyahara, Y. Yokoyama, H. Matsuzaki, K. Masuda, K. Nagaya, T. Nakamura and Y. Muraki, Long-term variation of solar activity deduced from carbon-14 content in tree rings, American Geophysical Union, Fall Meeting, San Francisco, USA, 2009.12. (poster)
  17. H. Miyahara, et al., Influence of the Schwabe/Hale solar cycles on climate change, XXVII General Assembly of International Astronomical Union, Rio de Janeiro, Aug. 2009. 招待講演
  18. Miyahara, H., Y. Yokoyama, Y. T. Yamaguchi and K. Masuda, Effect of solar variations on the decadal climate cycle, American Geophysical Union, Fall Meeting, San Francisco, USA, 2008.12. (poster)
  19. H. Miyahara, Reconstruction of solar activity in the past using cosmogenic radiocarbon, American Geophysical Union, Spring Meeting, Florida, USA, May 27-30, 2008. 招待講演
  20. H. Miyahara, Y. Yokoyama, H. Matsuzaki, K. Horiuchi, H. Motoyama, High-resolution measurement of beryllium-10 in the Dome Fuji shallow ice core during the Maunder Minimum, AGU fall meeting, San Francisco, USA, December 10-14, 2007. (poster)
  21. H. Miyahara, K. Masuda, K. Nagaya, Y. Muraki & T. Nakamura, Variation of the eleven-year solar cycle during the last 1200 years and its effect on terrestrial climate, The XXIV meeting of IUGG, Perugia, Italy, 2-13, July, 2007. (poster)
  22. H. Miyahara, K. Masuda, Y. Muraki, K. Nagaya & T. Nakamura, Variation of the 11-yr and the 22-yr solar cycles associated with long-term solar variations, AGU fall meeting, San Francisco, USA, Dec. 11-15, 2006. (poster)
  23. H. Miyahara, K. Masuda & Y. Muraki, Variation of solar activity and its effect on climate since the Spoerer Minimum, AGU fall meeting, San Francisco, USA, Dec. 5-9, 2005. (poster)
  24. H. Miyahara, K. Masuda & Y. Muraki, Variation of the carbon-14 content in tree rings during the Maunder and the Spoerer Minima, AOGS 2nd annual meeting, Singapore, June 20-24, 2005.
  25. H. Miyahara, K. Masuda & Y. Muraki, Solar cycle during the Maunder Minimum, AGU fall meeting, San Francisco, USA, Dec. 13-17, 2004. (poster)
  26. H. Miyahara, K. Masuda, Y. Muraki, H. Menjo, H. Furuzawa, H. Kitagawa & T. Nakamura,The variation of Solar Activity during the Spoerer Minimum, AOGS 1st annual meeting, Singapore, July 5-9, 2004. 招待講演
  27. H. Miyahara, K. Masuda, Y. Muraki, H. Menjo, H. Furuzawa, H. Kitagawa & T. Nakamura,Variation of the annual radiocarbon concentration in the Japanese-cedar-tree around the 15th to 18th century, 8th Conference "Methods of Absolute Chronology", Ustron, Poland, May 17-19, 2004.
  28. H. Miyahara, K. Masuda, H. Furuzawa, H. Menjo, Y. Muraki, H. Kitagawa & T. Nakamura,Variation of Cosmic Ray Intensity during the Spoerer Minimum, International Conference on Cosmic Rays and Dark Matter, Nagoya, Japan, July 28-30, 2003. 招待講演
  29. H. Miyahara, K. Masuda, H. Furuzawa, H. Menjo, Y. Muraki, H. Kitagawa & T. Nakamura,Variation of the radiocarbon content in tree rings during the Spoerer Minimum, 18th International Radiocarbon conference, Wellington, New Zealand, September, 2003.
  30. H. Miyahara, K. Masuda, H. Furuzawa, Y. Muraki, T. Nakamura, H. Kitagawa & K. Arslanov, Variation of the radiocarbon content of tree rings during the Spoerer Minimum, 28th International Cosmic Ray Conference, Tsukuba, Japan, August, 2003.
  31. H. Miyahara, K. Masuda, Y. Muraki, T. Uemura, M. Kato, H. Toyoizumi, H. Furuzawa, T. Nakamura, H. Kitagawa and E. Matsumoto, Radiocarbon contents in tree rings during the Spoerer minimum, 9th International AMS conference, Nagoya, Japan, September, 2002.

 

International symposium

  1. H. Miyahara, Effects of Galactic Cosmic Rays on Weather and Climate, The 2nd Nagoya Workshop on the Relationship between Solar Activity and Climate Changes 16-17, Jan, 2012, Nagoya, Japan.
  2. H. Miyahara, Cosmic rays and climate/weather, 6th Symposium on the Science by Astronomical Earth Observatory (Chimondai) & International Workshop of Interactive Research Center of Science, Oct/31-Nov.2, 2011, Tokyo, Japan.
  3. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi, H. Matsuzaki, T. Nakatsuka Variations of solar activity, cosmic rays, and climate during the Maunder Minimum, Space Climate Symposium 4, Goa, India, January, 2011.Invited
  4. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi, K. Sho, T. Nakatsuka, Influence of Cosmic rays on Climate Change, PMIP 3 Workshop, Kyoto, Japan, Dec, 2010. (poster)
  5. H. Miyahara, Solar activity and climate, Japanese-American Frontiers of Science, Chiba, Japan, Dec 2-6, 2010.Invited
  6. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi, T. Nakatsuka, K. Horiuchi, S. Fallon, H. Matsuzaki, Variability of solar activity and cosmic rays, and their influences on climate change, SCOSTEP STP-12 Symposium, Berlin, Germany, July, 2010.
  7. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi, H. Matsuzaki, T. Nakatsuka, K. Horiuchi, S. Fallon, Historical changes in solar activity and its impact on regional-global climate, 2010 PAGES (PAst Global changES) Regional Workshop in Japan, Nagoya, Japan, June, 2010.招待講演
  8. H. Miyahara, Y. Yokoyama, H. Matsuzaki, K. Horiuchi, S. Fallon, Long-term variation of solar activity during the last 7000 years, WCU International Workshop 2010, Seoul, Korea, April, 2010.
  9. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi, Possible link between multi-decadal climate cycles and variable solar magnetic cycles, ESF-JSPS Frontier Science Conference Series for Young Researchers, Contact Zones of Empires in Asia and Europe: Complexity, Contingency, Causality, Fukuoka,2010.2.27-3.4.
  10. H. Miyahara, T. Aze, Y. Yokoyama, Long-term variation of GCR/SEP events revealed by ice core analysis: A review, Solar Energetic Particles: Origin and Environmental Impacts, Kyoto, Jan. 12-14, 2010. 招待講演
  11. H. Miyahara, Y. Yokoyama, Y. T. Yamaguchi, Possible influence of cosmic rays on climate change, CAWSESII workshop "Origin and consequence of the present low solar activity", Tokyo, Dec. 5, 2009.
  12. H. Miyahara, K. Horiuchi, Y. Muramatsu, H. Takahashi, H. Matsuzaki, H. Motoyama, Solar irradiance during the last 1300 years reconstructed from beryllium-10 content in the Dome Fuji ice core, The 2nd International Symposium on Dome Fuji Ice Core and Related Topics, Tokyo, Nov. 18-20, 2009. (poster)
  13. Miyahara H., Role of galactic cosmic rays on decadal to multi-decadal climate variations, International Symposium of "From Genome to Snowball Earth, Metazoan Evolution and Habitable Planets: Multidisciplinary Relations", Odaiba, Tokyo, 2008.10
  14. Miyahara, H., Y. Yokoyama, and K. Masuda, Transition of the Schwabe/Hale Solar Cycles Associated with the Long-Term Variation of Solar Activity, International workshop on Solar Variability, Earth’s Climate and the Space Environment, Montana, USA, 2008.6.
  15. Miyahara H., Y. Yokoyama, Y. T. Yamaguchi, H. Matsuzaki, K. Masuda, K. Nagaya, T. Nakamura, T. Nakatsuka and Y. Muraki, Variations of solar and climate proxies during the last 1200 years, International Workshop on Variabilities of Solar-Cosmic and Terrestrial Environment, Yokohama, Japan, 2008.12. 招待講演
  16. H. Miyahara, Y. Yokoyama, K. Masuda, K. Nagaya, K. Kitazawa, Y. Muraki, H. Kitagawa & T. Nakamura, Effect of Variable Schwabe/Hale Cycles of the Sun on Climate Change, SCOSTEP, International CAESES Symposium, Kyoto, Japan, October 23-27, 2007. 招待講演
  17. H. Miyahara, Y. Yokoyama, K. Masuda, K. Nagaya, K. Kitazawa, Y. Muraki & T. Nakamura, Changing cycles of the Sun and climate, EASTEC Symposium 2007 Dynamic Earth -its origin and future-, Sendai City War Reconstruction Memorial Hall, Sendai, Japan. September 18-21, 2007. 招待講演
  18. H. Miyahara, Radiocarbon content in single-year tree rings of Japanese cedar, International Symposium on Radiometric Dating Studies, -Frontier of Technical developments and Applications of CHIME and AMS 14C Dating Methods-, Symposion Hall, Nagoya University, 15-17, January, 2007.
  19. H. Miyahara, K. Masuda, T. Nakamura, H. Kitagawa K. Nagaya & Y. Muraki, Radiocarbon content in single-year tree rings of Japanese cedar, The 9th symposium of Japanese AMS Society -Prospects for the New Frontiers of Earth and Environmental Sciences-, Takeda Hall, The University of Tokyo, 20-21, October, 2006.
  20. H. Miyahara, K. Masuda, Y. Muraki, H. Kitagawa & T. Nakamura, Variability of Solar cycles during the last 1200 years deduced from radiocarbon data, 2nd International Symposium on SPACE CLIMATE, - Long-term Changes in the Sun and their Effects in the Heliosphere and Planet Earth -, Sinaia, Romania, September 13-16, 2006.
  21. H. Miyahara, K. Masuda, Y. Muraki, H. Kitagawa & T. Nakamura, Variation of solar cycle during the Maunder and Spoerer minima, Workshop on Solar Activity: Exploration, Understanding and Prediction, Lund, Sweden, September 19-21, 2005.
  22. H. Miyahara, K. Masuda, Y. Muraki & T. Nakamura, Reconstruction of solar cycles using tree rings and ice cores, Joint STEL-WISER Workshop on Nonlinear Dynamics of Earth, Oceans and Space (EOS 2005), Inuyama, Japan, 15-16 September 2005. 招待講演
  23. H.Miyahara, K.Masuda, Y.Muraki, H.Menjo, H.Furuzawa, H.Kitagawa & T.Nakamura, The 11-year solar cycle during the Spoerer and the Maunder minima, 1st International Symposium on SPACE CLIMATE, - Direct and Indirect observations of Long-term Solar Activity -, Oulu, Finland, June 20-23, 2004. 招待講演

 

国内学会・シンポジウム・研究会(2008年~)

  1. Hiroko Miyahara, Solar Rotational Cycle in Lightning Activity in Japan during the 18–19th Centuries, 日本地球惑星科学連合,幕張, 2018.5.24.
  2. Hiroko Miyahara, Fuyuki Tokanai, Toru Moriya, High precision measurement of carbon-14 content in tree rings from the Maunder Minimum, 日本地球惑星科学連合,幕張, 2018.5.24.(Poster)
  3. 宮原ひろ子, 古典籍に見る日本の雷の発生周期, 第2回古典籍文理融合研究会, 2018.1.30.
  4. Hongyang Xu, Hiroko Miyahara, Kazuho Horiuchi, Limin Zhou, Reconstruction of the flux of galactic cosmic rays using travertine deposits: A pilot study, 地球電磁気・地球惑星圏学会, 2017.10.18.(Poster)
  5. H. Miyahara, Y. Aono, R. Kataoka, 27-day solar rotational cycle in lightning activity in Kyoto from the 17th to 18th century, 地球電磁気・地球惑星圏学会, 2017.10.18.(Poster)
  6. 宮原ひろ子, 太陽活動の気候変動への影響を探る ー 一月スケールから数十年スケールまで, 第15回気候変動研究会, 帝京大学, 2017.6.26.
  7. H. Miyahara, T. Terasawa, R. Kataoka, M. Sato, Y. Takahashi, Solar 27-day rotational period detected in a wide-area lightning activity in Japan, 日本地球惑星科学連合,幕張, 2017. 5. 23. (Poster, Invited)
  8. H. Miyahara, K. Horiuchi, F. Tokanai, T. Moriya, Y. Yokoyama, H. Matsuzaki, H. Motoyama, Precise dating of cosmic ray events in the 17th century found by the analysis of beryllium-10 content in Antarctic ice core, 日本地球惑星科学連合,幕張, 2017. 5. 23. (Poster)
  9. H. Miyahara, W. Sakashita, K. Horiuchi, L. Zhou, H. Xu, H. Matsuzaki, Cosmogenic 10Be in endogenic travertine deposits at Baishuitai, China: A pilot study, 日本地球惑星科学連合,幕張, 2017. 5. 23. (Poster)
  10. 宮原ひろ子, 日本の広域雷活動にみられる27日周期変動について, 第6回太陽圏宇宙線研究会, 2017.4.5.
  11. 宮原ひろ子, 青野靖之, 片岡龍峰, 佐藤光輝, 高橋幸弘, 雷活動にみる太陽活動の気象への影響, 古典籍を用いた文理融合研究に関する研究会, 2017/3/8.
  12. H. Miyahara, W. Sakashita, Y. Yokoyama, T. Nakatsuka, T. Aze, Y. Hoshino, M. Ohyama, H. Yonenobu, K. Takemura, A humid climate at the last stage of the Little Ice Age  in central Japan reconstructed using oxygen isotopes in tree rings, 日本地球惑星科学連合, 幕張, 2016/5/23.
  13. 宮原ひろ子, 太陽活動・太陽圏環境の長期変動と小氷期の気候, 第63回気候影響・利用研究会, 日本大学, 2015.11.17 (招待講演).
  14. 宮原ひろ子, マウンダー極小期の太陽圏と宇宙線変動, 第5回 極端宇宙天気現象研究会, 名古屋大学, 2015.11.11. 
  15. 宮原ひろ子, 堀内一穂, 門叶冬樹, 森谷透, 横山祐典, 松崎浩之, 本山秀明, 片岡龍峰, マウンダー極小期の宇宙線変動詳細解析と年代決定, 研究集会「複数核種と複数原理に基づく宇宙線年代決定法の新展開」 -宇宙線生成核種の連続記録と古宇宙線・古環境変動III-, 弘前大学, 2015.11.7. 
  16. 宮原ひろ子, 年輪中炭素14濃度の高精度分析によるマウンダー極小期の宇宙線22年周期変動の検出について, 地球電磁気・地球惑星圏学会, 東京大学, 2015.11.3.
  17. 宮原ひろ子, 樋口千夏, 寺澤敏夫, 27-day variation of lightning activity in Japan, 地球電磁気・地球惑星圏学会, 東京大学, 2015.11.2(ポスター).
  18. 宮原ひろ子, 太陽活動低下時の太陽圏と宇宙線変調について, 太陽圏・宇宙天気予報・気候変動研究会, 法政大学, 2015.9.19.
  19. Hiroko Miyahara, Kazuho Horiuchi, Fuyuki Tokanai, Kazuhiro Kato, Toru Moriya, Yusuke Yokoyama, Hiroyuki Matsuzaki, Hideaki Motoyama, Ryuho Kataoka, Variation of the intensity of galactic cosmic rays during the Maunder Minimum, 日本地球惑星科学連合, 幕張, 2015.5.25.
  20. 宮原ひろ子, 門叶冬樹, 加藤和浩, 横山祐典, 堀内一穂, 樹木年輪中炭素14濃度の高精度分析による宇宙線22年周期変動の検出について, 物理学会, 早稲田大学, 2015.3.22.
  21. 宮原ひろ子, 年輪中炭素14濃度の高精度分析による宇宙線の22年周期変動および太陽圏環境の復元, 地球電磁気・地球惑星圏学会, 松本市, 2014.11.2(ポスター).
  22. 宮原ひろ子,マウンダー極小期における太陽圏環境と気候変動/最終氷期における太陽活動と気候変動,宇宙気候学に関する研究会,名古屋大学,2014.4.3. 招待講演
  23. 宮原ひろ子,赤道域におけるフィールド計測の可能性について,名大STE研究会・宇宙線による雲核生成機構の解明,名古屋大学,2013.7.12.
  24. 宮原ひろ子, マウンダー極小期における宇宙線の22年変動, 日本地球惑星科学連合,幕張,2013.5.20.
  25. 宮原ひろ子, マウンダー極小期における太陽活動・太陽圏変動, 第2回極端宇宙天気研究会,東京工業大学,2012.10.1-2.
  26. 宮原ひろ子, 炭素14とベリリウム10の時系列解析に基づく太陽気候研究, 宇宙線生成核種の連続記録と古宇宙線・古環境変動II,弘前大学,2012.8.24-25.
  27. 宮原ひろ子,磯崎行雄,川久保友太,横山祐典,鈴木淳,政田洋平, Probing the history of the Sun based on the reconstruction of solar cycle lengths, 日本地球惑星科学連合,幕張,2012.5.20-25.
  28. 宮原ひろ子, John P. Matthews,高橋幸弘,佐藤光輝,宗像一起,山敷庸亮,増田周平,片岡龍峰, 横山 祐典,Benjamin Laken, 宇宙線27日周期変動と熱帯域雲活動, 日本地球惑星科学連合,幕張,2012.5.20-25.
  29. 宮原 ひろ子, 太陽圏の変動と気候・気象, 第56回気候影響・利用研究会,気象庁,2012.3.26. 招待講演
  30. 宮原 ひろ子,横山祐典,堀内一穂,松崎浩之,本山秀明,門叶冬樹,加藤和浩,庵下稔, マウンダー極小期における宇宙線生成核種の22年変動について, 日本物理学会,関西学院大学,2012.3.24.
  31. 宮原 ひろ子, 古宇宙線変動からの太陽活動変動要素の自律的抽出, 研究集会「宇宙線生成核種の連続記録と古宇宙線・古環境変動」,東大,2011.6.4.
  32. 宮原 ひろ子,洪 鵬,横山 祐典,高橋 幸弘,佐藤 光輝, 熱帯域雲活動への太陽活動とQBOの影響, 日本地球惑星科学連合,幕張,2011.5.22-27.
  33. 宮原ひろ子, 宗像一起,高橋幸弘,佐藤光輝, 宇宙線27 日周期変動の雲活動への影響の可能性について, 日本地球惑星科学連合,幕張,2011.5.22-27.招待講演
  34. 宮原ひろ子, 太陽活動・宇宙線・地球環境, 第160回生存圏シンポジウム・第3回宇宙環境・利用シンポジウム, 京都大学, 2010.12.20.
  35. 宮原ひろ子, 宇宙線と太陽放射の影響を如何に見分けるか?, 太陽活動と気候変動の関係に関する名古屋ワークショップ, 名古屋大学, 2010.11.15.
  36. 宮原ひろ子, 太陽活動の長周期変動,太陽天体ダイナモ研究会, 名古屋大学, 2010.9.27-28.招待講演
  37. 宮原ひろ子,横山祐典,山口保彦, 松崎浩之, 中塚武, 堀内一穂, Stewart Fallon, 太陽活動と宇宙線変動が気候変動に果たす役割を探る-太陽活動、宇宙線変動、気候変動の復元のこれまでの成果と展望,CAWSES-II Kick-Off Symposium, 京都大学, 2010.6.16-17.招待講演
  38. 宮原ひろ子,横山祐典,山口保彦, 中塚武 宇宙線変動に対する気候システムの応答,日本地球惑星科学連合,幕張,2010.5. 23-28.招待講演
  39. 宮原ひろ子,横山祐典,高橋幸弘, 本極小期の宇宙線: 史上最強宇宙線は何をもたらしたか?,日本地球惑星科学連合,幕張,2010.5. 23-28.招待講演
  40. 宮原ひろ子, 横山祐典, 草野完也, 片岡龍峰, 太陽活動および太陽圏構造の長期変動と宇宙線変動,日本地球惑星科学連合,幕張,2010.5. 23-28.
  41. 宮原ひろ子,横山祐典,山口保彦, 松崎浩之, 中塚武, 過去1200年間の太陽活動、宇宙線変動、気候変動, JAMSTECシステム地球ラボ・シンポジウム,横浜,2010.3.5.招待講演
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  43. 宮原ひろ子,横山祐典,松崎浩之,北澤恭平,永冶健太朗,増田公明,中村俊夫,村木綏, 樹木年輪中の放射性炭素濃度にもとづく太陽活動極小期の前兆現象について, 地球電磁気・地球惑星圏学会,金沢,2009.9.27-30.
  44. 宮原 ひろ子, 横山 祐典, 松崎 浩之, 永冶 健太朗, 増田 公明, 中村 俊夫, 樹木年輪中炭素14の分析による太陽活動の研究,日本地球化学会,広島,2009.9.
  45. 宮原ひろ子, 横山祐典, 増田公明, 太陽活動極小期における宇宙線起源核種の22年変動について, 日本物理学会, 立教大学, 2009.3.
  46. 宮原ひろ子, 太陽活動の11年周期の変遷と気候変動, 第二回「歴史的記録と現代科学」研究会,国立天文台, 2009.3.
  47. 宮原ひろ子, 宇宙線起源核種による過去の太陽活動と宇宙線変動, 第3回「地文台によるサイエンス」シンポジウム,名古屋大学, 2009.1.
  48. 宮原ひろ子, 横山祐典, 増田公明, 過去の宇宙線変動の記録, 日本地質学会, 秋田大学, 2008.9. 招待講演
  49. 宮原ひろ子, 有史上の気候変化とその要因, 第58回日本西洋史学会, 島根大学, 2008.5. 招待講演
  50. 宮原ひろ子, 増田公明, 横山祐典, 中世の温暖期における太陽活動と気候, 日本地球惑星科学連合大会,千葉幕張, 2008.5.
  51. 宮原ひろ子, 横山祐典, 増田公明, マウンダー極小期における宇宙線変動と気候変動, 日本地球惑星科学連合大会,千葉幕張, 2008.5.
  52. 宮原ひろ子, 横山祐典, 松崎浩之, 堀内一穂, ,本山秀明, マウンダー極小期における南極ドームふじ氷床コア中10Be濃度変動, AMSシンポジウム,東京, 2008.3.
  53. 宮原ひろ子,横山祐典,松崎浩之,堀内一穂,本山秀明, 南極氷床中10Beによる宇宙線および太陽活動変動の復元, 太陽圏シンポジウム, 名古屋大学, 2008.1. 招待講演
  54. 宮原ひろ子, 横山祐典, 増田公明, 14Cによる太陽11年周期変動の歴史とその気候変動との関連性について, 古海洋学シンポジウム,東京大学, 2008.1.