FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000488212> ?p ?o ?g. }

• W2000488212 endingPage "17695" @default.
• W2000488212 startingPage "17679" @default.
• W2000488212 abstract "Three‐dimensional models of compressional velocity and azimuthal anisotropy from tomographic inversions using 23,564 ocean bottom seismometer P wave arrivals define systematic lateral variations in seismic structure of the CoAxial segment of the Juan de Fuca Ridge (JdFR). Over much of the segment the across‐axis structure is roughly axisymmetric, characterized by a progressive increase in dike velocities moving away from the ridge axis. This trend is most apparent in the basal dikes, where on‐axis velocities are about 800 m/s slower than those measured elsewhere within the rift valley. The on‐axis sheeted dikes also exhibit ridge‐oriented azimuthal anisotropy, with a peak‐to‐peak amplitude of about 600 m/s. Outboard of the rift valley, beneath ridge flanks with fault scarps, velocities in the upper 1500 m of crust are reduced. The maximum amplitude of this anomaly is about 700 m/s, located near the top of the sheeted dikes. Variations in the three‐dimensional velocity model are believed to reflect changes in crustal porosity, from which we infer an axisymmetric porosity model for seismic layer 2 of the CoAxial segment. As the crust ages, the evolution of layer 2 porosity could occur in the following way: (1) the porosity of zero‐age, on‐axis dikes is set at formation by the contraction of molten material, (2) hydrothermal alteration fills pore spaces as the dikes move away from the center of the axial valley, and (3) normal faulting on the ridge flank scarps opens fractures and increases porosity of the upper dikes as they move off‐axis. At the north end of the segment, dike velocities are several hundred meters per second slower, on average, and the across‐axis structure is lost. The transition from a coherent, aligned seismic structure to a less distinct pattern with reduced velocities may represent a shift from magmatic to amagmatic extension moving away from the Cobb hotspot on the ridge axis. The porosity structure we have derived for the CoAxial segment suggests an alternative to the usual hydrothermal circulation model of cross‐axis convection cells. A circulation model with along‐axis convection cells located entirely within the axial valley appears to be more compatible with our data." @default.
• W2000488212 created "2016-06-24" @default.
• W2000488212 creator A5021246591 @default.
• W2000488212 creator A5030629479 @default.
• W2000488212 creator A5045304397 @default.
• W2000488212 creator A5063329130 @default.
• W2000488212 date "1997-08-10" @default.
• W2000488212 modified "2023-10-17" @default.
• W2000488212 title "Three‐dimensional tomographic velocity structure of upper crust, Coaxial segment, Juan de Fuca Ridge: Implications for on‐axis evolution and hydrothermal circulation" @default.
• W2000488212 cites W1968882799 @default.
• W2000488212 cites W1970259035 @default.
• W2000488212 cites W1971308778 @default.
• W2000488212 cites W1972928272 @default.
• W2000488212 cites W1981081042 @default.
• W2000488212 cites W1987007071 @default.
• W2000488212 cites W1988009315 @default.
• W2000488212 cites W2003005196 @default.
• W2000488212 cites W2008039491 @default.
• W2000488212 cites W2009032137 @default.
• W2000488212 cites W2011848086 @default.
• W2000488212 cites W2012864958 @default.
• W2000488212 cites W2013539586 @default.
• W2000488212 cites W2019260018 @default.
• W2000488212 cites W2022429771 @default.
• W2000488212 cites W2022482964 @default.
• W2000488212 cites W2023923449 @default.
• W2000488212 cites W2031452154 @default.
• W2000488212 cites W2033774424 @default.
• W2000488212 cites W2038929618 @default.
• W2000488212 cites W2043487144 @default.
• W2000488212 cites W2050019763 @default.
• W2000488212 cites W2051173566 @default.
• W2000488212 cites W2075531765 @default.
• W2000488212 cites W2095974181 @default.
• W2000488212 cites W2108511180 @default.
• W2000488212 cites W2112472776 @default.
• W2000488212 cites W2145509731 @default.
• W2000488212 cites W2150408549 @default.
• W2000488212 cites W2151261650 @default.
• W2000488212 cites W2153615532 @default.
• W2000488212 cites W2153640208 @default.
• W2000488212 cites W2160406865 @default.
• W2000488212 cites W2160754773 @default.
• W2000488212 cites W2163035644 @default.
• W2000488212 cites W2169003474 @default.
• W2000488212 doi "https://doi.org/10.1029/97jb00592" @default.
• W2000488212 hasPublicationYear "1997" @default.
• W2000488212 type Work @default.
• W2000488212 sameAs 2000488212 @default.
• W2000488212 citedByCount "49" @default.
• W2000488212 countsByYear W20004882122012 @default.
• W2000488212 countsByYear W20004882122013 @default.
• W2000488212 countsByYear W20004882122014 @default.
• W2000488212 countsByYear W20004882122015 @default.
• W2000488212 countsByYear W20004882122019 @default.
• W2000488212 countsByYear W20004882122021 @default.
• W2000488212 countsByYear W20004882122022 @default.
• W2000488212 crossrefType "journal-article" @default.
• W2000488212 hasAuthorship W2000488212A5021246591 @default.
• W2000488212 hasAuthorship W2000488212A5030629479 @default.
• W2000488212 hasAuthorship W2000488212A5045304397 @default.
• W2000488212 hasAuthorship W2000488212A5063329130 @default.
• W2000488212 hasBestOaLocation W20004882121 @default.
• W2000488212 hasConcept C114679195 @default.
• W2000488212 hasConcept C117485682 @default.
• W2000488212 hasConcept C127313418 @default.
• W2000488212 hasConcept C151730666 @default.
• W2000488212 hasConcept C161509811 @default.
• W2000488212 hasConcept C165205528 @default.
• W2000488212 hasConcept C2776698055 @default.
• W2000488212 hasConcept C32277403 @default.
• W2000488212 hasConcept C50682988 @default.
• W2000488212 hasConcept C51151373 @default.
• W2000488212 hasConcept C5900021 @default.
• W2000488212 hasConcept C77928131 @default.
• W2000488212 hasConcept C8058405 @default.
• W2000488212 hasConcept C83893233 @default.
• W2000488212 hasConceptScore W2000488212C114679195 @default.
• W2000488212 hasConceptScore W2000488212C117485682 @default.
• W2000488212 hasConceptScore W2000488212C127313418 @default.
• W2000488212 hasConceptScore W2000488212C151730666 @default.
• W2000488212 hasConceptScore W2000488212C161509811 @default.
• W2000488212 hasConceptScore W2000488212C165205528 @default.
• W2000488212 hasConceptScore W2000488212C2776698055 @default.
• W2000488212 hasConceptScore W2000488212C32277403 @default.
• W2000488212 hasConceptScore W2000488212C50682988 @default.
• W2000488212 hasConceptScore W2000488212C51151373 @default.
• W2000488212 hasConceptScore W2000488212C5900021 @default.
• W2000488212 hasConceptScore W2000488212C77928131 @default.
• W2000488212 hasConceptScore W2000488212C8058405 @default.
• W2000488212 hasConceptScore W2000488212C83893233 @default.
• W2000488212 hasIssue "B8" @default.
• W2000488212 hasLocation W20004882121 @default.
• W2000488212 hasOpenAccess W2000488212 @default.
• W2000488212 hasPrimaryLocation W20004882121 @default.
• W2000488212 hasRelatedWork W1978334295 @default.
• W2000488212 hasRelatedWork W2001320468 @default.
• W2000488212 hasRelatedWork W2086520424 @default.

• next