Research articles

Fractionation of nitrogen isotopes in the enzymatic deamination of alanine: an insight into the quantitative evaluation of anaerobic metabolism in ecosystems

Yuko Takizawa, Hyuntae Choi, Mio Shibuya, Nayeon Park, Prarthana S. Dharampal, Shawn A. Steffan, Yoshito Chikaraishi

Miocene dextral movement on the Tanakura fault zone, Japan: strike-slip fault inversion due to arc–arc collision

Jun Hosoi, Tohru Danhara, Hideki Iwano, Takafumi Hirata

A compound-specific method for measuring the stable carbon isotopic composition of amino acids: elimination of the effect of isotopic fractionation during derivatization

Yoshito Chikaraishi, Hyuntae Choi, Nayeon Park,Yuko Takizawa

Relation between eruption at Nishinoshima and chlorophyll-a concentration at Ogasawara Islands in 2020

Rimpei Katada, Shima Ariyoshi, Hayate Ayuzawa, Koseki Saito, Joji Ishizaka, Hironobu Iwabuchi

Reconstructing the body temperature of extinct marine reptiles

Takashi Sambuichi, Urumu Tsunogai, Fumiko Nakagawa

Climatological characteristics of atmospheric rivers over Northern Eurasia during summer

Yoshiki Fukutomi, Hironari Kanamori, Tetsuya Hiyama

Pumice flotation time: how does the infiltration of water progress inside pumice?

Riko Nagao, Tadashi Yokoyama, Shingo Takeuchi

Olivine–ringwoodite transformation in Katol meteorite: implications for localized superheating of chondritic melt and seismic attenuation

Kishan Tiwari, Sujoy Ghosh, Masaaki Miyahara, Dwijesh Ray

New evaluation of vertical particulate organic carbon fluxes of submillimeter‑sized phaeodarians in the mesopelagic twilight zone of the western North Pacific Ocean

Takahito Ikenoue, Nanako O. Ogawa, Hidetaka Nomaki, Katsunori Kimoto, Makio C. Honda, Naohiko Ohkouchi, Tetsuichi Fujiki

Dependence of the solar wind plasma density on moderate- and extremely high-geomagnetic activity elucidated by potential learning

Ryozo Kitajima, Motoharu Nowada, Ryotaro Kamimura