Results 71 to 80 of about 906 (177)

Geochemical evidence for hydrothermal activity in the Okinawa trough.

GEOCHEMICAL JOURNAL, 1988
A distinct hydrothermal plume was found in the Iheya Graben in the middle Okinawa Trough in May, 1987, by using methane, manganese and the helium isotope ratio (3He/4He) as the geochemical tracers. The plume rises to an altitude of about 300-400 m above the sea floor with maximum methane and manganese anomalies of up to 650 nl kg-1, and 0.54μg kg-1 ...
Ishibashi, Jun-ichiro, Gamo, Toshitaka, Sakai, Hitoshi, Nojiri, Yukihiro, Igarashi, George, Shitashima, Kiminori, Tsubota, Hiroyuki   +6 more
openaire   +2 more sources

Scheffrahnitermes ubuntu (Isoptera: Apicotermitinae), Description of a New Termite Using a Collaborative Approach to Address the Wallacean Shortfall

New Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
The study of Neotropical Apicotermitinae remains challenging due to the large number of undescribed taxa (Linnean shortfall) as well as the scarcity of distributional data (Wallacean shortfall). Despite recent efforts to reduce the first one, the second remains an even more significant challenge.
Camila C. Mellado, Giordano G. Messina, Antonio Carvalho, Danilo E. Oliveira, Rayssa Almeida‐Azevedo, Renato Almeida de Azevedo, Hélida F. Cunha, Emanuelly F. Lucena, Joice P. Constantini, Olga P. Pinzón‐Florián, Tiago F. Carrijo   +10 more
wiley   +1 more source

Autocorrelation Seismic Imaging of Northern Taiwan Using Ambient Noise Data

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Over the past few million years, northern Taiwan records a tectonic history of subduction to arc–continent collision followed by post‐collisional collapse. This evolution motivates constraints on crustal structure, including crustal layering and thickness.
Mei Chien, Alan Levander, Po‐Fei Chen
wiley   +1 more source

Trophic Relationships Between a Seep Calamyzine Worm and Its Vesicomyid Clam Host Inferred From Multiple Lines of Isotopic Evidence

Marine Ecology, Volume 47, Issue 3, May/June 2026.
ABSTRACT Calamyzine worms are often found in mantle cavities of large chemosymbiotic bivalves in deep‐sea chemosynthesis‐based ecosystems, but the nature of trophic interactions between the worms and their clam hosts remains largely obscure. Here, we combine bulk tissue carbon and nitrogen stable isotope analyses with radiocarbon and nitrogen compound ...
Chong Chen, Naoto Jimi, Hidetaka Nomaki, Naoto F. Ishikawa   +3 more
wiley   +1 more source

Holocene Climate Changes: Unraveling Processes, Mechanisms, and Impacts Across Spatiotemporal Scales

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract As the most recent interglacial period and the timeframe for the development of human civilization, the Holocene provides a critical perspective for understanding future climate under continued global warming. This special collection focuses on Holocene climate changes and features 14 interdisciplinary studies.
Liangcheng Tan, Hai Xu, Xianfeng Wang
wiley   +1 more source

Imprint of the Quasi‐Biennial Oscillation on the Ionosphere and Thermosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The Quasi‐Biennial Oscillation (QBO) is a dominant mode of stratospheric variability and is known to modulate the variability of the ionosphere‐thermosphere (IT) system. However, the extent of its influence on the ionosphere‐thermosphere system remains uncertain due to weak signals and confounding with similar periodicities in solar flux.
D. Singh, L. P. Goncharenko, S. R. Zhang
wiley   +1 more source

Volcanic Characteristics of Kueishantao in Northeast Taiwan and Their Implications

Terrestrial, Atmospheric and Oceanic Sciences, 2010
Kueishantao (KST) is a small offshore volcanic island located at the southernmost part of the Okinawa Trough. In this study, we conducted a detailed mapping incorporating the new high resolution LiDAR DTM laser scanning device to accurately construct a ...
Ching-Lung Chiu, Sheng-Rong Song, Yu-Chung Hsieh, Chi-Xuan Chen   +3 more
doaj   +1 more source

Spatial Heterogeneity of the Microbial Community in the Surface Sediments in the Okinawa Trough

Journal of Marine Science and Engineering
The Okinawa Trough (OT) has been a focus of scientific research for many years due to the presence of vibrant hydrothermal and cold seep activity within its narrow basin.
Ye Chen, Nengyou Wu, Cuiling Xu, Youzhi Xin, Jing Li, Xilin Zhang, Yucheng Zhou, Zhilei Sun   +7 more
doaj   +1 more source

Heat Flow of the Southwestern End of the Okinawa Trough

Terrestrial, Atmospheric and Oceanic Sciences, 2001
Detailed heat flow measurements were carried out around the ODP contingency drilling site KS-l (24°48'N, 122°30'E) located on the southern slope of the southwestern end of the Okinawa Trough. A total of 26 heat flow values were obtained. Within about 10 km of the site, the heat flow is lower than 50 m W/m2. Heat flow increases southward to about 65 m W/
Chuen-Tien Shyu, Char-Shine Liu
openaire   +2 more sources

Millennial-Scale Planktic Foraminifer Faunal Variability in the East China Sea during the Past 40000 Years (IMAGES MD012404 from the Okinawa Trough)

Terrestrial, Atmospheric and Oceanic Sciences, 2008
High resolution planktic foraminifer fauna assemblage data are used to reconstruct the millennial-scale sea surface temperature (SST) variability of the past 40000 years at an IMAGES core site (MD012404) in the Okinawa Trough in the East China Sea (ECS).
Yuan-Pin Chang, Wei-Lung Wang, Yusuke Yokoyama, Hiroyuki Matsuzaki, Hodaka Kawahata, Min-Te Chen   +5 more
doaj   +2 more sources