globalchange  > 科学计划与规划
DOI: 10.1002/2015GL063259
论文题名:
Magmatism on rift flanks: Insights from ambient noise phase velocity in Afar region
作者: Korostelev F.; Weemstra C.; Leroy S.; Boschi L.; Keir D.; Ren Y.; Molinari I.; Ahmed A.; Stuart G.W.; Rolandone F.; Khanbari K.; Hammond J.O.S.; Kendall J.M.; Doubre C.; Ganad I.A.; Goitom B.; Ayele A.
刊名: Geophysical Research Letters
ISSN: 0094-8799
EISSN: 1944-8530
出版年: 2015
卷: 42, 期:7
起始页码: 2179
结束页码: 2188
语种: 英语
英文关键词: Afar ; ambient seismic noise ; crustal structure ; Red Sea ; seismic tomography ; Yemen
Scopus关键词: Acoustic noise ; Phase velocity ; Structural geology ; Tectonics ; Afar ; Ambient seismic noise ; Crustal structure ; Red sea ; Seismic tomography ; Yemen ; Seismology ; ambient noise ; faulting ; hydrothermal activity ; magmatism ; mantle structure ; phase velocity ; rift zone ; seismic velocity ; wave breaking
英文摘要: During the breakup of continents in magmatic settings, the extension of the rift valley is commonly assumed to initially occur by border faulting and progressively migrate in space and time toward the spreading axis. Magmatic processes near the rift flanks are commonly ignored. We present phase velocity maps of the crust and uppermost mantle of the conjugate margins of the southern Red Sea (Afar and Yemen) using ambient noise tomography to constrain crustal modification during breakup. Our images show that the low seismic velocities characterize not only the upper crust beneath the axial volcanic systems but also both upper and lower crust beneath the rift flanks where ongoing volcanism and hydrothermal activity occur at the surface. Magmatic modification of the crust beneath rift flanks likely occurs for a protracted period of time during the breakup process and may persist through to early seafloor spreading. Key Points Crustal and upper mantle structures are characterized in Red Sea and Afar Magmatic processes are currently modifying the crust of the Red Sea flanks Rift-flank magmatism can persist after breakup ©2015. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928700314&doi=10.1002%2f2015GL063259&partnerID=40&md5=7ce6354c2c507c6ed2cb66ddc4faf38f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8415
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Sorbonne Universités, UPMC Université Paris 06, UMR 7193, Paris, France

Recommended Citation:
Korostelev F.,Weemstra C.,Leroy S.,et al. Magmatism on rift flanks: Insights from ambient noise phase velocity in Afar region[J]. Geophysical Research Letters,2015-01-01,42(7).
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