2024
[22] 西山学, 諸田智克, 竝木則行, 井上和輝,杉田精司, "線状重力異常から探る月膨張時の内部進化", 月地殻研究会, 大津, 2024年3月, 口頭発表

[21] 西山学, 宇野慎介, Thomas Mueller, 鈴木雄大, 竝木則行,杉田精司, "気象衛星ひまわり8号の月惑星科学利用", 0221-PM7, 第25回惑星圏研究会, 仙台, 2024年2月, 口頭発表

2023
[20] 西山学, 宇野慎介, 鈴木雄大, Thomas Mueller, 竝木則行,杉田精司, "気象衛星ひまわり8号の月惑星科学利用", P-106, 日本惑星科学会秋季講演会, 広島, 2023年10月, ポスター発表

[19] 西山学, 諸田智克, 竝木則行, 井上和輝,杉田精司, "線状重力異常から探る月の初期内部進化", SA-05, 日本惑星科学会秋季講演会, 広島, 2023年10月, 口頭発表

[18]​ Gaku Nishiyama, Tomokatsu Morota, Noriyuki Namiki, Kazuki Inoue, and Seiji Sugita, “Composition of Magma Composing Lunar Linear Gravity Anomalies: Implication to Magmatism During Ancient Lunar Expansion”, PS20-A029, Asia Oceania Geoscience Society 20th Annual Meeting, Singapore, August 2023, poster presentation

[17]​ Gaku Nishiyama, Taichi Kawamura, Keisuke Onodera, Takeshi Tsuji  The University of Tokyo, Japan, Satoshi Tanaka, Hiroyuki Kurokawa, Naoya Sakatani, Yuri Shimaki, “Investigation on Seismic Exploration of Small Bodies: Implication to the Japanese Next Generation Small Body Sample Return Project”, PS16-A012, Asia Oceania Geoscience Society 20th Annual Meeting, Singapore, August 2023, oral presentation

[16]​ 西山学, 諸田智克, 竝木則行, 井上和輝,杉田精司, “線状重力異常とその周辺のスペクトルから探る月の初期膨張時のマグマ組成”, PPS06-12, 日本地球惑星科学連合2023年大会, 幕張, 5月2023年, 口頭発表

[15]​ Gaku Nishiyama, Tomokatsu Morota, Noriyuki Namiki, Kazuki Inoue, and Seiji Sugita, “High-Calcium Pyroxene Exposures Possibly from Ancient Magmatic Intrusions of Lunar Linear Gravity Anomalies”, 1253, 54th Lunar and Planetary Science Conference, Houston, U.S., March 2022, oral presentation

2022

[14]​ Gaku Nishiyama, Noriyuki Namiki, Seiji Sugita, and Shinsuke Uno, “Utilization of the Japanese meteorological satellite Himawari-8 as an infrared space telescope for lunar and planetary science”, EPSC2022-101, Europlanet Science Congress 2022, Granada, Spain, September 2022, oral presentation

[13]​ Gaku Nishiyama, Alexander Stark, Christian Hüttig, Hauke Hussmann, Klaus Gwinner, Ernst Hauber, Luisa M. Lara, and Nicolas Thomas, “Simulation of laser pulse shapes received by the BepiColombo Laser Altimeter (BELA): Implications for future constraints on surficial properties of Mercury ”, EPSC2022-326, Europlanet Science Congress 2022, Granada, Spain, September 2022, oral presentation

[12]​ G. Nishiyama, N. Namiki, S. Sugita, S. Uno, “Utility of the meteorological satellite Himawari-8 for planetary science: lunar surficial physical properties implied from the infrared spectrum”, ACG38-03, Japan Geoscience Union Meeting 2022, Hybrid, May 2022, oral presentation

[11]​ G. Nishiyama, N. Namiki, S. Sugita, S. Uno, “Potential of Meteorological Satellites as Space Telescopes:  Lunar Infrared Spectrum Observed by Himawari-8”, 1751, 53rd Lunar and Planetary Science Conference, online, March 2022, iPoster presentation

[10] 西山学, 竝木則行, 杉田精司, 宇野慎介 ”気象衛星ひまわり8号の惑星科学的利用：月の熱赤外スペクトル解析”, P-103, 宇宙科学シンポジウム, オンライン, 1月2022年, ポスター発表

2021

[9] G. Nishiyama, N. Namiki, S. Sugita, "Structures and formation age of lunar linear gravity anomalies estimated from impact simulations: Implication to the lunar ancient expansion", P55C-1949, AGU Fall Meeting 2021, online, December 2021, iPoster presentation

[8] 西山学, 竝木則行, 杉田精司 “衝突数値計算を用いた月線状重力異常の構造・形成年代と月膨張史への制約”, O-06, 太陽系天体若手研究会, オンライン, 11月2021年, 口頭発表 

[7] 西山学, 竝木則行, 杉田精司 “衝突数値計算による月線形重力異常の構造と形成年代への制約”,MIS12-01, 日本地球惑星科学連合2021年大会, オンライン, 6月2021年, 口頭発表
 
[6] G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, K. Onodera, S. Sugita, T. Saiki, H. Imamura, Y. Takagi, H. Yano, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, S. Nakazawa, Y. Iijima, “A  new model of seismicity on asteroids implied by the SCI experiment of the Hayabusa2 mission: Insight from the existence of boulders perched on other boulders”, 1819, 52nd Lunar and Planetary Science Conference, online, March 2021, Pre-recording oral presentation 

2020
 
[5] G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, K. Onodera, S. Sugita, T. Saiki, H. Imamura, Y. Takagi, K. Shirai, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, S. Nakazawa, Y. Iijima, “Simulation of seismic wave propagation on Ryugu induced by the SCI impact experiment of the Hayabusa2 mission: Limited seismic shaking due to low yield strength of the surface regolith”, P037-09, AGU Fall Meeting 2020, online, December 2020, oral presentation

[4] G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, T. Saiki, H. Imamura, Y. Takagi, K. Shirai, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, M. Arakawa, “Seismic wave propagation on asteroid Ryugu induced by the impact experiment on the Hayabusa2 mission”, C001097, JpGU-AGU Joint Meeting 2020, 幕張, 7月2020年, iPoster presentation
 
[3] G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, T. Saiki, H. Imamura, Y. Takagi, K. Shirai, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, M. Arakawa, “An absence of seismic shaking on Ryugu induced by the impact experiment on the Hayabusa2 mission”, 1806, 51st Lunar and Planetary Science Conference, Houston, U.S., March 2020, Oral presentation #cancelled due to COVID-19

2019

[2] 西山学, 竝木則行, 川村太一, Benjamin Fernando, Kuangdai Leng, 「地震波伝搬モデリングを用いたリュウグウの弾性的特性の制約とseismic shaking の可能性の検討」, O44, 惑星科学会秋季講演会, 京都, 2019年, 口頭発表

[1] 西山学, 竝木則行, 「GRAIL重力場データを用いた月大型盆地下のモホ面深さの推定」, PPS08-05, 日本地球惑星科学連合2019年大会, 幕張, 5月2019年, 口頭発表