Results 31 to 40 of about 459,162 (303)

The Rebalance to Asia Policy of the Obama Administration (2011–2017): Diversifying the United States Security Design in Asia-Pacific

open access: yesPerspective Politice, 2022
The gradual and steady growth of China’s economic and military power over the past decades has reoriented the foreign policy priority of the United States from the Middle East to the East Asian region. In 2011, U.S.
Anca VASILACHE
doaj   +1 more source

Surface-Generated Mesoscale Eddies Transport Deep-Sea Products from Hydrothermal Vents [PDF]

open access: yes, 2011
International audienceAtmospheric forcing, which is known to have a strong influence on surface ocean dynamics and production, is typically not considered in studies of the deep sea.
Adams, D.K   +7 more
core   +4 more sources

262 Voyages Beneath the Sea: a global assessment of macro- and megafaunal biodiversity and research effort at deep-sea hydrothermal vents [PDF]

open access: yesPeerJ, 2019
For over 40 years, hydrothermal vents and the communities that thrive on them have been a source of profound discovery for deep-sea ecologists. These ecosystems are found throughout the world on active plate margins as well as other geologically active ...
Andrew D. Thaler, Diva Amon
doaj   +2 more sources

Active eruption seen on East Pacific Rise

open access: yesEos, Transactions American Geophysical Union, 1991
Investigators involved in the ADVENTURE program, an Alvin dive program on the East Pacific Rise crest at 9°–10°N, have reported evidence suggesting very recent and possibly ongoing eruptive activity along this portion of the mid‐ocean ridge. Preliminary age dating of basalt samples from the new flows (Figure 1) suggest that the eruption did, in fact ...
Rachel M. Haymon   +17 more
openaire   +1 more source

Variations in the annual cycle of the East Asian monsoon and its phase-induced interseasonal rainfall anomalies in China

open access: yesAtmospheric and Oceanic Science Letters, 2020
The East Asian monsoon (EAM) exhibits a robust annual cycle with significant interannual variability. Here, the authors find that the EAM annual cycle can be decomposed into the equinoctial and solstitial modes in the combined sea level pressure, 850-hPa
Song JIANG, Congwen ZHU, Ning JIANG
doaj   +1 more source

Geological and geophysical signatures of the East Pacific Rise 8°–10°N

open access: yesSolid Earth Sciences, 2019
The East Pacific Rise (EPR) 8°–10°N is an archetype for fast-spreading mid-ocean ridge (MOR), and has been one of the most comprehensively studied MOR sections for over four decades.
M.V.P. Vithana   +4 more
doaj   +1 more source

Missing western half of the Pacific Plate: Geochemical nature of the Izanagi-Pacific Ridge interaction with a stationary boundary between the Indian and Pacific mantles [PDF]

open access: yes, 2015
The source mantle of the basaltic ocean crust on the western half of the Pacific Plate was examined using Pb–Nd–Hf isotopes. The results showed that the subducted Izanagi–Pacific Ridge (IPR) formed from both Pacific (180–∼80 Ma) and Indian (∼80–70 Ma ...
Allegre   +136 more
core   +1 more source

High‐Resolution Isotopic Variability Across EPR Segment 16°N: A Chronological Interpretation of Source Composition and Ridge‐Seamount Interaction

open access: yesGeochemistry, Geophysics, Geosystems, 2021
A high‐resolution sampling profile constituted of 52 basalt samples from across the East Pacific Rise (EPR) was investigated. These samples provide a unique opportunity to study the coeval recording of isotopic signals derived from sub‐marine eruptions ...
Berengere Mougel   +3 more
doaj   +1 more source

Active rifting and crustal thinning along the Rivera-Cocos plate boundary as inferred from Mantle Bouguer gravity anomalies [PDF]

open access: yesGeofísica Internacional, 2004
The El Gordo graben lies within the oceanic lithosphere west of the Middle America Trench at 18.15°N, 104.7°W. This graben has been proposed to mark the southwest tip of an active zone of extension located between the Rivera and Cocos plates. The results
Carlos A. Mortera Gutiérrez   +2 more
doaj  

The TsuJal Amphibious Seismic Network: A Passive-Source Seismic Experiment in Western Mexico

open access: yesFrontiers in Earth Science, 2021
The geodynamic complexity in the western Mexican margin is controlled by the multiple interactions between the Rivera, Pacific, Cocos, and North American plates, as evidenced by a high seismicity rate, most of whose hypocenters are poorly located.
Francisco Javier Núñez-Cornú   +7 more
doaj   +1 more source

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