Matches in SemOpenAlex for { <https://semopenalex.org/work/W1896718854> ?p ?o ?g. }
- W1896718854 endingPage "2968" @default.
- W1896718854 startingPage "2949" @default.
- W1896718854 abstract "Abstract Mantle plumes and consequent plate extension have been invoked as the likely cause of East African Rift volcanism. However, the nature of mantle upwelling is debated, with proposed configurations ranging from a single broad plume connected to the large low‐shear‐velocity province beneath Southern Africa, the so‐called African Superplume, to multiple lower‐mantle sources along the rift. We present a new P ‐wave travel‐time tomography model below the northern East‐African, Red Sea, and Gulf of Aden rifts and surrounding areas. Data are from stations that span an area from Madagascar to Saudi Arabia. The aperture of the integrated data set allows us to image structures of ∼100 km length‐scale down to depths of 700–800 km beneath the study region. Our images provide evidence of two clusters of low‐velocity structures consisting of features with diameter of 100–200 km that extend through the transition zone, the first beneath Afar and a second just west of the Main Ethiopian Rift, a region with off‐rift volcanism. Considering seismic sensitivity to temperature, we interpret these features as upwellings with excess temperatures of 100 ± 50 K. The scale of the upwellings is smaller than expected for lower mantle plume sources. This, together with the change in pattern of the low‐velocity anomalies across the base of the transition zone, suggests that ponding or flow of deep‐plume material below the transition zone may be spawning these upper mantle upwellings." @default.
- W1896718854 created "2016-06-24" @default.
- W1896718854 creator A5010387302 @default.
- W1896718854 creator A5016684626 @default.
- W1896718854 creator A5017168253 @default.
- W1896718854 creator A5022395948 @default.
- W1896718854 creator A5027395797 @default.
- W1896718854 creator A5029032793 @default.
- W1896718854 creator A5031091545 @default.
- W1896718854 creator A5055047277 @default.
- W1896718854 creator A5055956023 @default.
- W1896718854 creator A5069817988 @default.
- W1896718854 creator A5070315033 @default.
- W1896718854 creator A5076717864 @default.
- W1896718854 creator A5086300371 @default.
- W1896718854 creator A5087185234 @default.
- W1896718854 date "2015-09-01" @default.
- W1896718854 modified "2023-10-13" @default.
- W1896718854 title "Multiple mantle upwellings in the transition zone beneath the northern <scp>E</scp>ast‐<scp>A</scp>frican <scp>R</scp>ift system from relative P‐wave travel‐time tomography" @default.
- W1896718854 cites W1519512314 @default.
- W1896718854 cites W1548270632 @default.
- W1896718854 cites W1597948644 @default.
- W1896718854 cites W1621537172 @default.
- W1896718854 cites W1645146529 @default.
- W1896718854 cites W1660410253 @default.
- W1896718854 cites W1678661852 @default.
- W1896718854 cites W1894668183 @default.
- W1896718854 cites W1903259899 @default.
- W1896718854 cites W1908487823 @default.
- W1896718854 cites W1950226711 @default.
- W1896718854 cites W1959032219 @default.
- W1896718854 cites W1964917767 @default.
- W1896718854 cites W1965750923 @default.
- W1896718854 cites W1966917681 @default.
- W1896718854 cites W1973582422 @default.
- W1896718854 cites W1979232410 @default.
- W1896718854 cites W1985893553 @default.
- W1896718854 cites W1987153889 @default.
- W1896718854 cites W1989439803 @default.
- W1896718854 cites W1990532446 @default.
- W1896718854 cites W1992272017 @default.
- W1896718854 cites W1995253253 @default.
- W1896718854 cites W1997984361 @default.
- W1896718854 cites W2003987543 @default.
- W1896718854 cites W2004987525 @default.
- W1896718854 cites W2007940462 @default.
- W1896718854 cites W2008490376 @default.
- W1896718854 cites W2009645070 @default.
- W1896718854 cites W2010304831 @default.
- W1896718854 cites W2020193444 @default.
- W1896718854 cites W2026932112 @default.
- W1896718854 cites W2028598151 @default.
- W1896718854 cites W2031381920 @default.
- W1896718854 cites W2032292079 @default.
- W1896718854 cites W2034721395 @default.
- W1896718854 cites W2035642076 @default.
- W1896718854 cites W2036882492 @default.
- W1896718854 cites W2037546356 @default.
- W1896718854 cites W2037624729 @default.
- W1896718854 cites W2039852472 @default.
- W1896718854 cites W2040123418 @default.
- W1896718854 cites W2040501896 @default.
- W1896718854 cites W2040536778 @default.
- W1896718854 cites W2040658851 @default.
- W1896718854 cites W2041832958 @default.
- W1896718854 cites W2042862411 @default.
- W1896718854 cites W2044096781 @default.
- W1896718854 cites W2045563607 @default.
- W1896718854 cites W2045687618 @default.
- W1896718854 cites W2046306948 @default.
- W1896718854 cites W2049885524 @default.
- W1896718854 cites W2052907420 @default.
- W1896718854 cites W2054274326 @default.
- W1896718854 cites W2057999792 @default.
- W1896718854 cites W2058926689 @default.
- W1896718854 cites W2061754414 @default.
- W1896718854 cites W2065745004 @default.
- W1896718854 cites W2066222380 @default.
- W1896718854 cites W2067221280 @default.
- W1896718854 cites W2069302116 @default.
- W1896718854 cites W2070638076 @default.
- W1896718854 cites W2072711200 @default.
- W1896718854 cites W2073132126 @default.
- W1896718854 cites W2073485883 @default.
- W1896718854 cites W2074029267 @default.
- W1896718854 cites W2080918078 @default.
- W1896718854 cites W2081839958 @default.
- W1896718854 cites W2082195580 @default.
- W1896718854 cites W2083389817 @default.
- W1896718854 cites W2084491750 @default.
- W1896718854 cites W2085526049 @default.
- W1896718854 cites W2089901911 @default.
- W1896718854 cites W2091049975 @default.
- W1896718854 cites W2092380924 @default.
- W1896718854 cites W2093506379 @default.
- W1896718854 cites W2097672104 @default.
- W1896718854 cites W2098094093 @default.
- W1896718854 cites W2109946582 @default.