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Over the past decade there has been a huge improvement in the performance of state-of-the-art MIP codes. Combined with the increased performance of computers over this period the size and complexity of the problems that can be solved has increased enormously. In this paper we take a closer look at some of the hardest problems in the MIPLIB 2003 library ([4]) to show how much progress has been m...
Using high-resolution stacks of precursors to the seismic phase SS, we investigated seismic discontinuities associated with mineralogical phase changes approximately 410 and 660 kilometers (km) deep within Earth beneath South America and the surrounding oceans. Detailed maps of phase boundary topography revealed deep 410- and 660-km discontinuities in the down-dip direction of subduction, incon...
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