Research articles

Long-term and interannual variations of atmospheric methane observed by the NIES and collaborative observation networks

Taku Umezawa, Yasunori Tohjima, Yukio Terao, Motoki Sasakawa, Astrid Müller, Tazu Saeki, Toshinobu Machida, Shin-Ichiro Nakaoka, Hideki Nara, Shohei Nomura, Masahide Nishihashi, Hitoshi Mukai, Matthias Max Frey, Isamu Morino, Hirofumi Ohyama, Yukio Yoshida, Jiye Zeng, Hibiki Noda, Makoto Saito, Tsuneo Matsunaga, Takafumi Sugita, Hiroshi Tanimoto, Yosuke Niwa, Akihiko Ito, Yousuke Yamashita, Tomoko Shirai, Misa Ishizawa, Kentaro Ishijima, Kazuhiro Tsuboi, Yousuke Sawa, Hidekazu Matsueda

Microgravity penetrometry flight campaign in support of MMX sampler science exploitation

Alexander Smyth-Moore, Johan Borg, Álvaro Soria-Salinas, Naomi Murdoch, Hiroki Kato, Hideaki Miyamoto, Tomohiro Usui, Erika Kaufmann, Mikael Granvik and Axel Hagermann

Spatiotemporal variation of aftershock activity in northern source region of the 2011 Tohoku-oki earthquake by long-term ocean bottom seismometers

Masanao Shinohara, Ryota Hino, Kimihiro Mochizuki, Toshinori Sato, Kazuo Nakahigashi, Tomoaki Yamada, Yoshio Murai, Hiroshi Yakiwara, Yoshihiro Ito, Ryosuke Azuma and Toshihiko Kanazawa

Textural evolution of S-type micrometeorites

V. P. Singh and N. G. Rudraswami

Ground calibration tests of the laser altimeter (LIDAR) for MMX mission

Senshu H, Mizuno T, Nakura T, Suetsugu R, Kasai K, Ikeda H, Noda H, Matsumoto K, Araki H, Umetani K, Konishi A, Sasaki S, Ishihara Y, Ikuse Y, Mayuzumi K, Kase T

Stability and water solubility of calcium ferrite-type aluminum-rich phase: implications for deep water cycle caused by subducting basaltic crusts

Xinyue Zhang, Izumi Mashino, Takayuki Ishii

Evidence of methanogenic activity associated with past fish farming in Lake Soyang, South Korea

Dong-Hun Lee, Jung-Hyun Kim, Sujin Kang, Dahae Kim, Kyung-Hoon Shin

2D visco-elasto-plastic subduction models in the presence of a high density and viscosity continental block: a case study for the slab geometry beneath the Kii Peninsula, southwest Japan

Erika Jessenia Moreno, Shoichi Yoshioka, Vlad Constantin Manea, Marina Manea, Nobuaki Suenaga

Estimating the risks of big earthquakes based solely on the empirical relationship between intensities and rates of occurrences after incorporating temporal clustering correction

Takuya Kawanishi

Rutile solubility in aqueous sodium salt solutions at high pressures and temperatures: in-situ observations using a diamond anvil cell

Naoko Takahashi, Tatsuki Tsujimori, Seiji Kamada, Michihiko Nakamura