Results 41 to 50 of about 312 (135)

Characterization of water masses around the southern Ryukyu Islands based on isotopic compositions

Progress in Earth and Planetary Science, 2022
We investigated the water-mass structure on the Okinawa Trough and Pacific sides of the southern Ryukyu Island Arc (Yonaguni, Iriomote, and Ishigaki subareas) using the Nd isotope composition (143Nd/144Nd ratios; expressed as εNd values) of benthic ...
Andros Daniel Cruz Salmeron, Hideko Takayanagi, Shigeyuki Wakaki, Tsuyoshi Ishikawa, Toshihiro Miyajima, Hitomi Wakaki, Takuya Itaki, Yasufumi Iryu   +7 more
doaj   +1 more source

Precise Temperature Measurements and Long‐Term Observations Revealed an Almost‐Constant Temperature Zone in a Vertical 700‐m‐Deep Borehole in the Aso Volcanic Region

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract To determine the subsurface temperature distribution and its relevance to groundwater flow in the deep subsurface, we repeated temperature depth profile measurements and conducted long‐term temperature observations in an ∼700‐m‐deep borehole penetrating the Futagawa fault along the Kiyama–Kashima graben in the Aso volcanic region, Japan from ...
Weiren Lin, Susumu Shibutani, Shuai Feng, Nana Kamiya, Kazuya Ishitsuka, Xiaoqiu Yang, Yutaro Shigemitsu, Yupeng Cao, Koichiro Sado   +8 more
wiley   +1 more source

Deepest and hottest hydrothermal activity in the Okinawa Trough: the Yokosuka site at Yaeyama Knoll [PDF]

Royal Society Open Science, 2017
Since the initial discovery of hydrothermal vents in 1977, these ‘extreme’ chemosynthetic systems have been a focus of interdisciplinary research. The Okinawa Trough (OT), located in the semi-enclosed East China Sea between the Eurasian continent and the
Junichi Miyazaki, Shinsuke Kawagucci, Akiko Makabe, Ayu Takahashi, Kazuya Kitada, Junji Torimoto, Yohei Matsui, Eiji Tasumi, Takazo Shibuya, Kentaro Nakamura, Shunsuke Horai, Shun Sato, Jun-ichiro Ishibashi, Hayato Kanzaki, Satoshi Nakagawa, Miho Hirai, Yoshihiro Takaki, Kyoko Okino, Hiromi Kayama Watanabe, Hidenori Kumagai, Chong Chen   +20 more
doaj   +1 more source

Two‐Layer Anisotropy Beneath Subduction Zones: Bayesian Inversion

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Shear‐wave splitting measurements have the potential to constrain multiple layers of anisotropy and thereby enhance depth resolution. Using the formulation of Silver and Savage (1994, https://doi.org/10.1111/j.1365‐246x.1994.tb04027.x), previous studies have employed deterministic grid‐search approaches to identify best‐fitting two‐layer ...
Cheng‐Chien Peng, Ban‐Yuan Kuo, Jean‐Paul Montagner   +2 more
wiley   +1 more source

The Sub-Crustal Stress Field in the Taiwan Region

Terrestrial, Atmospheric and Oceanic Sciences, 2015
We investigate the sub-crustal stress in the Taiwan region. A tectonic configuration in this region is dominated by a collision between the Philippine oceanic plate and the Eurasian continental margin.
Robert Tenzer and Mehdi Eshagh
doaj   +1 more source

Unveiling coralline diversity of mesophotic rhodoliths in subtropical Japan, including new species of Sporolithon, emended genera Orientalilithon and Roseolithon (Corallinophycidae, Rhodophyta)

Journal of Phycology, Volume 62, Issue 3, Page 1044-1070, June 2026.
Abstract The mesophotic zone off Tanegashima Island (approximately 30–40 m deep) is a marine macroalgal hotspot in subtropical Japan; however, the taxonomic diversity of calcifying red algal community remains poorly understood. Our phylogenetic analyses based on psbA, rbcL, and COI‐5P gene markers disclosed the presence of at least 12 rhodolith‐forming
Min‐Khant‐Kyaw, Masasuke Baba, Ryuta Terada, Aki Kato   +3 more
wiley   +1 more source

Introduction to the special issue on the Hualien earthquake swarms

Terrestrial, Atmospheric and Oceanic Sciences, 2022
The Hualien city is located near the pole of rotation induced by the along-strike transition from Ryukyu subduction to the collision between the Luzon arc and the Chinese continental margin in northeastern Taiwan (Rau et al., J Geophy Res 113: B09404 ...
Ruey-Juin Rau, Wen-Tzong Liang
doaj   +1 more source

Can Hot and Cold Slabs Transport Water Into the Deep Mantle Beyond Subduction Zone Magmatism?

Geochemistry, Geophysics, Geosystems
The slab thermal state model predicts that only cold slabs should retain some of their intra‐slab water beyond subduction zones, while warmer slabs should be nearly dry past the volcanic arc front.
Julia M. Ribeiro, Jeff Ryan, Jonny Wu
doaj   +1 more source

Introduction to the special issue on tectonic environment and seabed resources of the southern Okinawa Trough

Terrestrial, Atmospheric and Oceanic Sciences, 2019
Okinawa Trough (OT) is a back-arc basin behind the Ryukyu arc-trench system and located along the eastern margin of the Eurasian continent. It extends from the southwest Kyushu Island to the Ilan Plain of Taiwan (Fig. 1).
Song-Chuen Chen, Jing-Yi Lin, Chih-Chieh Su, Wen-Bin Doo   +3 more
doaj   +1 more source

Flux and Isotopic Composition of Sedimentary Carbon Subducting Along the World's Trenches

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Here we provide comprehensive estimates for the subducted sedimentary flux of inorganic and organic carbon and δ13C at 16 trench segments worldwide. Our calculations provide minimum (incoming sediment), maximum (trench fill) and best estimates (underthrust) of carbon fluxes.
Terry Plank, Alberto Malinverno
wiley   +1 more source