منابع مشابه
Appraising the reliability of converted wavefield imaging: application to USArray imaging of the 410-km discontinuity
S U M M A R Y We develop a generic method to appraise the reliability of wavefield imaging methods and use it to validate some novel observations on the 410-km discontinuity. The core concept of the error appraisal method is to produce a simulated data set that replicates the geometry of the real data. Here we implemented two simulation methods: (1) flat layer primary P to S conversions, and (2...
متن کاملThe Effect of Water on the 410-km Discontinuity: An Experimental Study
In order to evaluate the effect of H on the pressure and transition interval of the olivine-wadsleyite transformation, synthesis experiments were carried out in hydrous and anhydrous peridotite compositions at 1400oC. Under hydrous, near-saturated conditions, the pressure of the transition is 1.0 ± 0.5 GPa lower than under anhydrous conditions. In addition, the two-phase interval appears to bro...
متن کاملUbiquitous Low-Velocity Layer Atop the 410-Km Discontinuity in the Northern Rocky Mountains
S43A-1376.GeochemistryGeophysicsGeosystemsG jasbinsek and dueker: 410-km discontinuity, rockies 10.1029/2007GC001661
متن کاملSeismic detection of a low-velocity layer atop the 410-km discontinuity: verification of an electromagnetically detected layer of partial-melt atop the 410-km discontinuity beneath SE Arizona
Receiver functions calculated from a ten-station subset of the Earthscope Transportable Array (TA) show a well-defined 45 km thick low-velocity layer atop the 410-km discontinuity (“410”) beneath the Tucson, Arizona, region. This observation is consistent with a previously detected layer of increased electrical conductivity in the same region, from which the existence a 5-30 km thick layer of p...
متن کاملSingle-crystal elasticity of /3-Mg,SiO, to the pressure of the 410 km seismic discontinuity in the Earth’s mantle
The complete set of elastic stiffness coefficients of a single crystal of Mg,SiO, in the modified spine1 (wadsleyite) structure are reported at eight pressures from ambient to 14 Gigapascals (GPa). All moduli vary linearly with pressure within the resolution of the data. Third-order Birch-Mumaghan equation fits to aggregate elastic moduli yield values of 170 (k 2) GPa and 4.3 (k 0.2) for the ad...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 1998
ISSN: 0148-0227
DOI: 10.1029/98jb00164