Results 71 to 80 of about 2,067 (212)

Active Rift System in the Okinawa Trough and Its Northeastern Continuation [PDF]

, 1996
Recent submarine, geological and geophysical investigations have revealed that the present central rift system of the Okinawa Trough which is an active extensional axis of the trough has been formed since about 2 Ma. Two stages of the formation processes
KIMURA, Masaaki
core  

Organic carbon burial and their implication on sea surface primary productivity in the middle Okinawa Trough over the past 200 ka

Frontiers in Marine Science
The long-term burial of organic carbon in marginal seas plays a critical role in Earth’s carbon cycle and climate change. However, the mechanism of organic carbon (OC) burial in the Okinawa Trough (OT) during glacial-interglacial timescales remains ...
Yunge Jing, Yunge Jing, Taoliang Zhang, Ben Zhu, Jingtao Zhao, Xiaoxiao Zhao, Yanguang Dou, Qing Li, Feng Cai, Bangqi Hu, Liang Dong, Liang Dong   +11 more
doaj   +1 more source

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

Ancestral Biogeography Reveals Diverse Origins of Costa Rica Margin Seep Invertebrates

Journal of Biogeography, Volume 53, Issue 3, March 2026.
ABSTRACT Aim This work addressed the hypotheses that invertebrate species from hydrocarbon seeps at the Pacific Costa Rica Margin (CRM) would descend from adjacent biogeographic provinces, and that common ancestral histories would be identified across invertebrate groups.
Melissa J. Betters, Elisa Nocella
wiley   +1 more source

Benthoplanidae, a new family of benthic ctenophores (Platyctenida), based on morphological and genetic data

Journal of Systematics and Evolution, Volume 64, Issue 2, Page 387-400, March 2026.
The benthic ctenophore Benthoplana meteoris (adults left and bottom, planktonic juveniles to the top right), type species for the genus, which in turn is type for the newly erected family: Benthoplanidae (Ctenophora, Platyctenida). Abstract We present a phylogenetic analysis of benthic ctenophores of the order Platyctenida, sampling all but one genus ...
Nicholas Bezio, Gustav Paulay, Allen Collins   +2 more
wiley   +1 more source

Marine Heatwaves, Ocean Warming and Acidification Reshape Reef Fish Gut Microbiomes

Molecular Ecology, Volume 35, Issue 5, March 2026.
ABSTRACT Extreme climatic events and gradual climate change are increasingly anticipated to interact and reshape ecological communities. However, the combined effects of ocean warming, acidification and marine heatwaves on host‐associated microbial communities and their potential role in host adaptation remain poorly understood.
Angus Mitchell, Chloe Hayes, Callum J. Hudson, Sean D. Connell, Ben P. Harvey, Sylvain Agostini, Jeffrey Jolly, Timothy Ravasi, David J. Booth, Ivan Nagelkerken   +9 more
wiley   +1 more source

Effect of Submerged Vegetation on Water Surface Geometry and Air–Water Momentum Transfer

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Understanding how submerged vegetation modifies the water surface is crucial for modeling momentum exchange between shallow waters and the atmosphere. In particular, quantifying its impact on the equivalent aerodynamic roughness of the water surface is essential for improved boundary‐layer parameterization in oceanic and atmospheric models. In
G. Foggi Rota, A. Chiarini, M. E. Rosti
wiley   +1 more source

Okinawa Trough

, 2013
Okinawa Trough and Ryoku ...

core  

Millennial-scale paleoceanography in Okinawa Trough during Late Quaternary period

, 1999
Based on the analyses of foraminifer and accelerator mass spectrometer radiocarbon dating in DGKS9603 core from mid-Okinawa Trough close to bottom, oscillation curve, which expressed the relation between the surface water temperature and the depth, has ...
Liu, ZX, Berne, S, Floch, G, Li, PY, Li, Z, Li, TG, Chen, ZB, Guichard, F, Saito, Y   +8 more
core   +1 more source

Nd Isotope Response to Precipitation Variability in the Western Tropical Pacific Over the Last 30 kyr

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract Dissolved neodymium (Nd) isotopes are key tracers for water mass mixing in the open ocean and for land‐ocean exchanges in marginal seas. Hydrogenous Nd isotope ratios (expressed as εNd) in cores north of the equator reflect values of the surrounding lithology and tend to vary in accordance with local rainfall records, indicating higher ...
A. P. S. Cruz, C. Basak, A. K. I. U. Kapuge, L. Lo   +3 more
wiley   +1 more source