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    Birth of two volcanic islands in the southern Red Sea

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    Type
    Article
    Authors
    Xu, Wenbin cc
    Ruch, Joel
    Jonsson, Sigurjon cc
    KAUST Department
    Crustal Deformation and InSAR Group
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2015-05-26
    Online Publication Date
    2015-05-26
    Print Publication Date
    2015-12
    Permanent link to this record
    http://hdl.handle.net/10754/556077
    
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    Abstract
    Submarine eruptions that lead to the formation of new volcanic islands are rare and far from being fully understood; only a few such eruptions have been witnessed since Surtsey Island emerged to the south of Iceland in the 1960s. Here we report on two new volcanic islands that were formed in the Zubair archipelago of the southern Red Sea in 2011–2013. Using high-resolution optical satellite images, we find that the new islands grew rapidly during their initial eruptive phases and that coastal erosion significantly modified their shapes within months. Satellite radar data indicate that two north–south-oriented dykes, much longer than the small islands might suggest, fed the eruptions. These events occurred contemporaneously with several local earthquake swarms of the type that typically accompany magma intrusions. Earthquake activity has been affecting the southern Red Sea for decades, suggesting the presence of a magmatically active zone that has previously escaped notice.
    Citation
    Birth of two volcanic islands in the southern Red Sea 2015, 6:7104 Nature Communications
    Publisher
    Springer Nature
    Journal
    Nature Communications
    DOI
    10.1038/ncomms8104
    PubMed ID
    26010945
    PubMed Central ID
    PMC4455101
    Additional Links
    http://www.nature.com/doifinder/10.1038/ncomms8104
    ae974a485f413a2113503eed53cd6c53
    10.1038/ncomms8104
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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