Results 21 to 30 of about 270,633 (303)

Modeling heat transfer from a convecting, crystallizing, replenished silicic magma chamber at an oceanic spreading center

open access: yesGeochemistry, Geophysics, Geosystems, 2011
Most hydrothermal systems at oceanic spreading centers are underlain by basaltic magma bodies; however, some are underlain by higher‐silica magmas such as andesite or dacite.
Lei Liu, Robert P. Lowell
doaj   +1 more source

Geodynamic Models of Melt Generation and Extraction at Mid-Ocean Ridges [PDF]

open access: yesOceanography, 2012
It is widely accepted that plate divergence at mid-ocean ridges drives mantle flow, mantle melting, and the formation of new oceanic crust. However, many of the details of this process remain obscure because of the inaccessibility of the mantle to direct
Patricia M. Gregg   +3 more
doaj  

Sea-floor tectonics and submarine hydrothermal systems [PDF]

open access: yes, 2005
The discovery of metal-depositing hot springs on the sea floor, and especially their link to chemosynthetic life, was among the most compelling and significant scientific advances of the twentieth century. More than 300 sites of hydrothermal activity and
de Ronde, Cornell D. J.   +2 more
core   +1 more source

Estimating Zooplankton Biomass Distribution in the Water Column Near the Endeavour Segment of Juan de Fuca Ridge Using Acoustic Backscatter and Concurrently Towed Nets [PDF]

open access: yesOceanography, 2012
Logistical challenges, time, and the cost of towed net surveys make it difficult to obtain estimates of secondary biomass and production in the open ocean outside the summer sampling season. Alternate approaches are sometimes needed.
Brenda J. Burd, Richard E. Thomson
doaj  

Urban characteristics attributable to density-driven tie formation [PDF]

open access: yes, 2012
Motivated by empirical evidence on the interplay between geography, population density and societal interaction, we propose a generative process for the evolution of social structure in cities.
Cebrian, Manuel   +4 more
core   +2 more sources

Links from Mantle to Microbe at the Lau Integrated Study Site: Insights from a Back-Arc Spreading Center [PDF]

open access: yesOceanography, 2012
The Lau Integrated Study Site (ISS) has provided unique opportunities for study of ridge processes because of its back-arc setting in the southwestern Pacific. Its location allows study of a biogeographical province distinct from those of eastern Pacific
Margaret K. Tivey   +7 more
doaj  

Long Night Against Procrastination: A Collaborative Take On An International Event [PDF]

open access: yes, 2015
The Long Night Against Procrastination is an international tutoring event created by the writing center at the European University Viadrina in Frankfurt (Oder), Germany in 2010 (“Lange Nacht Der Aufgeschobenen Hausarbeiten”).
Kiscaden, Elizabeth, Nash, LeAnn
core   +1 more source

Roots [PDF]

open access: yesOceanography, 2012
It is with especially great pleasure, and a bit of nostalgia, that I introduce the March 2012 special issue of Oceanography on "Oceanic Spreading Center Processes: Ridge 2000 Program Research." My very first oceanographic cruise was to the Juan de Fuca ...
Ellen S. Kappel
doaj  

Geodynamic modeling on subduction-spreading interaction and implications for the South China Sea and surrounding regions

open access: yesGeosystems and Geoenvironment, 2023
The convergent subduction zones and the divergent spreading ridges are essential tectonic units that are widely distributed in the South China Sea and the surrounding regions, governing the regional tectonic evolution.
Jie Liao   +5 more
doaj   +1 more source

Actin, α-actinin, and tropomyosin interaction in the structural organization of actin filaments in nonmuscle cells [PDF]

open access: yes, 1975
During the spreading of a population of rat embryo cells, approximately 40% of the cells develop a strikingly regular network which precedes the formation of the straight actin filament bundles seen in the fully spread out cells.
Lazarides, Elias
core   +1 more source

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