Publication:
Slab control on the mega-sized North Pacific ultra-low velocity zone.

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cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0002-0673-4860
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcidbb4410c8-4060-4355-be09-d48465adb54c
dc.contributor.authorLi, Jiewen
dc.contributor.authorSun, Daoyuan
dc.contributor.authorBower, Daniel James
dc.date.accessioned2024-10-09T16:58:17Z
dc.date.available2024-10-09T16:58:17Z
dc.date.issued2022-02-24
dc.description.abstractUltra-low velocity zones (ULVZs) are localized small-scale patches with extreme physical properties at the core-mantle boundary that often gather at the margins of Large Low Velocity Provinces (LLVPs). Recent studies have discovered several mega-sized ULVZs with a lateral dimension of ~900 km. However, the detailed structures and physical properties of these ULVZs and their relationship to LLVP edges are not well constrained and their formation mechanisms are poorly understood. Here, we break the degeneracy between the size and velocity perturbation of a ULVZ using two orthogonal seismic ray paths, and thereby discover a mega-sized ULVZ at the northern edge of the Pacific LLVP. The ULVZ is almost double the size of a previously imaged ULVZ in this region, but with half of the shear velocity reduction. This mega-sized ULVZ has accumulated due to stable mantle flow converging at the LLVP edge driven by slab-debris in the lower mantle. Such flow also develops the subvertical north-tilting edge of the Pacific LLVP.
dc.description.sponsorshipCenter for Space and Habitability (CSH)
dc.identifier.doi10.48350/166090
dc.identifier.pmid35210453
dc.identifier.publisherDOI10.1038/s41467-022-28708-8
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/67872
dc.language.isoen
dc.publisherSpringer Nature
dc.relation.ispartofNature Communications
dc.relation.issn2041-1723
dc.relation.organizationDCD5A442C6F2E17DE0405C82790C4DE2
dc.subject.ddc500 - Science::520 - Astronomy
dc.titleSlab control on the mega-sized North Pacific ultra-low velocity zone.
dc.typearticle
dspace.entity.typePublication
dspace.file.typetext
oaire.citation.issue1
oaire.citation.startPage1042
oaire.citation.volume13
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliationCenter for Space and Habitability (CSH)
oairecerif.author.affiliation2#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation2#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation2#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation3#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation3#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation3#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation4#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation4#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation4#PLACEHOLDER_PARENT_METADATA_VALUE#
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.date.licenseChanged2022-02-28 12:06:17
unibe.description.ispublishedpub
unibe.eprints.legacyId166090
unibe.refereedTRUE
unibe.subtype.articlejournal

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