Hans-Peter Bunge

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The recent years have seen rapid advancement towards viewing the Earth as an integrated system. This means that we have come to understand the interdependence of the major planetary subsystems — atmosphere, biosphere, oceans and the deep earth interior — on a large range of time and length scales. One of the longest time scales of the planet is imposed by(More)
While it is generally assumed that global plate motions are driven by the pattern of convection in the Earth's mantle, the details of that link remain obscure. Bouyancy forces associated with subduction of cool, dense lithosphere at zones of plate convergence are thought to provide significant driving force, but the relative magnitudes of other driving and(More)
The recent years have seen rapid advancement towards viewing the Earth as an integrated system. This means that we have come to understand the interdependence of the major planetary subsystems-atmosphere, biosphere, oceans and the deep earth interior-on a large range of time and length scales. One of the longest time scales of the planet is imposed by solid(More)
Bends in volcanic hotspot lineaments, best represented by the large elbow in the Hawaiian-Emperor chain, were thought to directly record changes in plate motion. Several lines of geophysical inquiry now suggest that a change in the locus of upwelling in the mantle induced by mantle dynamics causes bends in hotspot tracks. Inverse modeling suggests that(More)
We propose a novel technique for seismic waveform tomography on continental scales. This is based on the fully numerical simulation of wave propagation in complex Earth models, the inversion of complete waveforms and the quantification of the waveform discrepancies through a specially designed phase misfit. The numerical solution of the equations of motion(More)
Progress in understanding the details in the global 3-D seismic velocity structure rests on the assumption that we can accurately model seismic wave propagation (e.g. travel times, waveforms, etc.) through heterogeneous 3-D Earth models. While for spherically symmetric models (quasi-)analytical solutions are available for the veriication of numerical(More)
Mantle convection is vital to our Earth system. The relentless deformation produced inside the Earth's mantle by slow, viscous creep has a far greater impact on our planet than might be immediately evident. Continuously reshaping the Earth's surface, mantle convection provides the enormous driving forces necessary to support large-scale horizontal motion in(More)