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Water, Hydrous Melting, and Teleseismic Signature of the Mantle Transition Zone
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. (Geophysics)
2019 (English)In: Geosciences, Vol. 9, no 12Article in journal (Refereed) Published
Abstract [en]

Recent geophysical and petrological observations indicate the presence of water and hydrous melts in and around the mantle transition zone (MTZ), for example, prominent low-velocity zones detected by seismological methods. Experimental data and computational predictions describe the influence of water on elastic properties of mantle minerals. Using thermodynamic relationships and published databases, we calculated seismic velocities and densities of mantle rocks in and around the MTZ in the presence of water for a plausible range of mantle potential temperatures. We then computed synthetic receiver functions to explore the influence of different water distribution patterns on the teleseismic signature. The results may improve our understanding and interpretation of seismic observations of the MTZ.

Place, publisher, year, edition, pages
2019. Vol. 9, no 12
Keywords [en]
mantle transition zone, receiver fucntions, water, hydrous melting
National Category
Geosciences, Multidisciplinary
Identifiers
URN: urn:nbn:se:uu:diva-399931OAI: oai:DiVA.org:uu-399931DiVA, id: diva2:1379395
Available from: 2019-12-17 Created: 2019-12-17 Last updated: 2019-12-17

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