Results 61 to 70 of about 27,575 (184)

Solidified magma reservoir derived from active source seismic experiments in the Aira caldera, southern Kyushu, Japan

Earth, Planets and Space, 2023
The Aira caldera, located in southern Kyushu, Japan, originally formed 100 ka, and its current shape reflects the more recent 30 ka caldera-forming eruptions (hereafter, called the AT eruptions). This study aimed to delineate the detailed two-dimensional
Hiroki Miyamachi, Hiroshi Yakiwara, Reiji Kobayashi, Shuichiro Hirano, Takeshi Kubo, Masakazu Souda, Kenyu Sakao, Naohiro Unno, Takeshi Matsushima, Kazunari Uchida, Rintaro Miyamachi, Kenshin Isoda, Yoshiko Teguri, Yoshinosuke Kamiya, Agnis Triahadini, Hiroshi Shimizu, Hiroshi Katao, Takuo Shibutani, Takeshi Tameguri, Yusuke Yamashita, Tsutomu Miura, Jun Nakagawa, Itaru Yoneda, Shinya Kato, Kosei Takishita, Kazuho Nakai, Yuta Maeda, Toshiki Watanabe, Shinichiro Horikawa, Kenjiro Matsushiro, Takashi Okuda, Shuhei Tsuji, Naoki Sogawa, Daima Hasegawa, Kazuo Nakahigashi, Eiji Kurashimo, Tomoaki Yamada, Hideji Abe, Miwako Ando, Shinichi Tanaka, Satoshi Ikezawa, Takaya Iwasaki, Masanao Shinohara, Toshinori Sato, Mare Yamamoto, Ryosuke Azuma, Satoshi Hirahara, Takashi Nakayama, Syuichi Suzuki, Shuhei Otomo, Ryota Hino, Tomoki Tsutsui, Yusuke Inoue, Ryuichi Takei, Yuya Tada, Hiroaki Takahashi, Yoshio Murai, Hiroshi Aoyama, Mako Ohzono, Takahiro Shiina, Masamitsu Takada, Masayoshi Ichiyanagi, Teruhiro Yamaguchi, Natsuki Ono, Kazuma Saito, Chihiro Ito, Yuuki Susukida, Tatsuya Nakagaki, Yasuhisa Tanaka, Yasuhiko Akinaga   +69 more
doaj   +1 more source

Evaluación de la generación de vapor de la fábrica de refrescos 23 de Agosto, en Camagüey

Mutis, 2017
El presente trabajo se llevó a cabo en la fábrica de refrescos 23 de Agosto, con el fin de evaluar la eficiencia energética del generador de vapor, determinar las pérdidas de calor en las tuberías de vapor que se encuentran sin aislamiento, determinar el
Amaury Pérez-Sánchez, Yenney Fernández Tejeda, Raúl González de la Cruz   +2 more
doaj   +1 more source

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

Journal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio, Luca Aldega, Luigi Dallai, Mario Gaeta, Fabrizio Marra   +4 more
wiley   +1 more source

CALDERA ACTIVITIES IN NORTH BALI, INDONESIA [PDF]

One of the most serious natural hazards is largescaled Plinian eruption that forms caldera. Although the probability to have such large-scaled eruption is very low, the result will be catastrophic if it happens.
-, A. Harijoko, -, C. Saitra, -, T. Yamanaka, -, I W. Warmada, -, K. Watanabe   +4 more
core   +1 more source

The Sofu Seamount Submarine Volcano Present in the Source Area of the October 2023 Earthquakes and Tsunamis in Japan

Geophysical Research Letters
On 8 October 2023 (UTC), unique earthquakes occurred in the Izu‐Ogasawara Arc, Japan, in which the P‐ and S‐phases were barely visible and only the T‐phases were evident, followed by tsunamis that reached islands in the Izu‐Ogasawara Arc and a wide area ...
Toshiya Fujiwara, Kentaro Imai, Masayuki Obayashi, Kenta Yoshida, Noriko Tada, Koichiro Obana, Gou Fujie, Shigeaki Ono, Shuichi Kodaira   +8 more
doaj   +1 more source

Pressure‐Decay Kinetic Modeling of Homogeneous Ethylene Polymerization with Et(Ind)2ZrCl2/TIBA‐Borate Catalyst System in a Batch Reactor

Polymer Engineering &Science, EarlyView.
A kinetic model comprising both propagation and deactivation functions was developed for metallocene‐catalyzed ethylene polymerization in a batch reactor. The model predicted polymer yields very close to the experimental ones. The polymer molecular weight increased with ethylene pressure and decreased with temperature.
Narendra Singh Choudhary, Sanjib K. Patra, Narayan C. Pradhan   +2 more
wiley   +1 more source

Hydrothermal Fluid Circulation and its Effect on Caldera Unrest

, 2008
This paper focuses on the role that hydrothermal systems may play in caldera unrest. Changes in the fluid chemistry, temperature, and discharge rate of hydrothermal systems are commonly detected at the surface during volcanic unrest, as hydrothermal ...
Todesco, M.
core   +1 more source

Structures controlling volcanic activity within Masaya caldera, Nicaragua

Volcanica, 2019
Geophysical and geological observations collected in 2007-2012 shed light on the mechanisms controlling the style and location of eruptions within the Las Sierras-Masaya Caldera complex, Nicaragua.
Guillermo Caravantes González, Hazel Rymer, Jeffrey Zurek, Susanna Ebmeier, Stephen Blake, Glyn Williams-Jones   +5 more
doaj   +1 more source

Endophytic fungi from two isolated Bethencourtia palmensis populations: metabolomic and bioactivity fingerprinting

Pest Management Science, EarlyView.
We compared two island populations of Bethencourtia palmensis and their culturable endophytic fungi, revealing distinct plant chemistries and a higher biopesticidal potential in the endophytic fungi from La Palma population along with high potential for the discovery of novel compounds.
Jorge Rojas López‐Menchero, Juan Imperial, Carmen Elisa Díaz, María Fe Andrés, Azucena González‐Coloma   +4 more
wiley   +1 more source