2024
[22] Gaku Nishiyama, Tomokatsu Morota, Noriyuki Namiki, Kazuki Inoue, Seiji Sugita, "Lunar interior evolution at the expansion phase inferred from linear gravity anomalies", Lunar crust research symposium, Otsu, March 2024, oral presentation

[21] Gaku Nishiyama, Shinsuke Uno, Thomas Mueller, Yudai Suzuki, Noriyuki Namiki, Seiji Sugita, "Utilization of the Japanese meteorological satellite for lunar and planetary science", 0221-PM7, 25th Symposium on Planetary Sciences, Sendai, Februrary 2024, oral presentation

2023
[20] Gaku Nishiyama, Shinsuke Uno, Yudai Suzuki, Thomas Mueller, Noriyuki Namiki, Seiji Sugita, "Utilization of the Japanese meteorological satellite for lunar and planetary science", P-106, the Japanese Society for Planetary Science Fall Meeting, Hiroshima, October 2023, poster presentation

[19] Gaku Nishiyama, Tomokatsu Morota, Noriyuki Namiki, Kazuki Inoue, Seiji Sugita, "Initial evolution of the lunar interior inferred from linear gravity anomalies on the Moon", SA-05, the Japanese Society for Planetary Science Fall Meeting, Hiroshima, October 2023, oral presentation

[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]​ Gaku Nishiyama, Tomokatsu Morota, Noriyuki Namiki, Kazuki Inoue, and Seiji Sugita, “Magma composition during ancient lunar expansion inferred from linear gravity anomalies and their surrounding spectra”, PPS06-12, Japan Geoscience Union Meeting 2023, Makuhari, Japan, May 2023, oral presentation

[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] G. Nishiyama, N. Namiki, S. Sugita, S, Uno, "The availability of the data of the meteorological satellite Himawari-8 for planetary science: The analysis of lunar infrared spectroscopy", P-103, Space Science Symposium #22, online, January 2022, Poster presentation

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] G. Nishiyama, N. Namiki, S. Sugita, "Structures and formation age of lunar linear gravity anomalies constrained by impact simulations: implications to lunar ancient expansion", O-O6, Solar System Bodies Workshop for Youngers, online, November 2021 , Oral presentation

[7] G. Nishiyama, N. Namiki, S. Sugita, "Structures and formation age of lunar linear gravity anomalies constrained by impact simulations", MIS12-01, Japan Geoscience Union Meeting 2021, online, June 2021 , Oral presentation
 
[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 o ral 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, Makuhari, July 2020, 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, US, March 2020, Oral presentation #cancelled due to COVID-19
 
2019
 
[2] G. Nishiyama, N. Namiki, T. Kawamura, B. Fernando, K. Leng, "Constrains on elastic properties of Ryugu from seismic wave propagation modeling and examination of the possibility of seismic shaking", O44,  the Japanese Society for Planetary Science Fall Meeting, Kyoto, 2019, Oral presentation

[1] G. Nishiyama, N. Namiki, "Estimation of Moho surface depth under the lunar large basin using GRAIL gravitational field data", PPS08-05, Japan Geoscience Union Meeting 2019, Makuhari, May 2019 , Oral presentation