Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"ultra-low velocity zones"”.
-
Seismic and gravitational studies of melting in the mantle's thermal boundary layers
… mantle melting phenomena at the upper and lower boundaries of the mantle. The first study uses seafloor bathymetry and small variations in the gravitational acceleration over the Hawaii-Emperor seamount chain to constrain the changes in the igneous production of the hot spot melting in the …
-
Seismic and gravitational studies of melting in the mantle's thermal boundary layers
… mantle melting phenomena at the upper and lower boundaries of the mantle. The first study uses seafloor bathymetry and small variations in the gravitational acceleration over the Hawaii-Emperor seamount chain to constrain the changes in the igneous production of the hot spot melting in the …
-
Seismic Imaging of Earth’s Core-Mantle Boundary using Diffracted Waves
… liquid outer core and exhibits the most extreme velocity jump in the Earth’s radial seismic structure. In recent decades, seismological studies demonstrate that the seismic structure close to this boundary is far more complicated than a one-dimensional velocity model could describe. In …
-
The character of the core-mantle boundary : a systematic study using PcP
… core interacts with the solid silicate-rich lower mantle the influence on the core-mantle reflected phase PcP is studied. If the core-mantle boundary is not a sharp discontinuity, this becomes apparent in the waveform and amplitude of PcP. Iron-silicate mixing would lead to regions of partial …
-
Mapping the Core-Mantle Boundary Using Sdiff Postcursors
… continent-sized structures characterised by low velocity anomalies lie opposite to each other on the core-mantle boundary. These structures, known as large low shear velocity provinces (LLSVPs), are predominantly situated beneath the Pacific Ocean and the African continent. Smaller, more …