@article{WolbernJacobBlakeetal.2006, author = {Wolbern, I and Jacob, A. W. B. and Blake, T. A. and Kind, Rainer and Li, X and Yuan, X. H and Duennebier, F and Weber, Michael H.}, title = {Deep origin of the Hawaiian tilted plume conduit derived from receiver functions}, doi = {10.1111/j.1365-246X.2006.03036.x}, year = {2006}, abstract = {We employ P to S converted waveforms to investigate effects of the hot mantle plume on seismic discontinuities of the crust and upper mantle. We observe the Moho at depths between 13 and 17 km, regionally covered by a strong shallow intracrustal converted phase. Coherent phases on the transverse component indicate either dipping interfaces, 3- D heterogeneities or lower crustal anisotropy. We find anomalies related to discontinuities in the upper mantle down to the transition zone evidently related to the hot mantle plume. Lithospheric thinning is confirmed in greater detail than previously reported by Li et al., and we determine the dimensions of the low-velocity zone within the asthenosphere with greater accuracy. Our study mainly focuses on the temperature-pressure dependent discontinuities of the upper mantle transition zone. Effects of the hot diapir on the depths of mineral phase transitions are verified at both major interfaces at 410 and 660 km. We determine a plume radius of about 200 km at the 660 km discontinuity with a core zone of about 120 km radius. The plume conduit is located southwest of Big Island. A conduit tilted in the northeast direction is required in the upper mantle to explain the observations. The determined positions of deflections of the discontinuities support the hypothesis of decoupled upper and lower mantle convection}, language = {en} } @article{YuanKindPedersen2005, author = {Yuan, X. H. and Kind, Rainer and Pedersen, H. A.}, title = {Seismic monitoring of the Indian Ocean tsunami}, issn = {0094-8276}, year = {2005}, abstract = {The 26 December 2004 Sumatra-Andaman earthquake of Mw 9.3 triggered a massive tsunami in the Indian Ocean. We here report on observations of the Indian Ocean tsunami at broadband seismic stations located on islands in the area. The tsunami induces long-period (> 1000 s) signals on the horizontal components of the sensor. Frequency-time analysis shows that the long-period signals cannot be due to seismic surface waves, but that it arrives at the expected time of the tsunami. The waveforms are well correlated to tide gauge observations at a location where both observations are available. To explain the signals we favour tilt due to coastal loading but we cannot at the present stage exclude gravitational effects. The density of broadband stations is expected to increase rapidly in the effort of building an earthquake monitoring system. They may unexpectedly become useful tsunami detectors as well}, language = {en} } @article{YuanSobolevKindetal.2000, author = {Yuan, X. H and Sobolev, Stephan Vladimir and Kind, Rainer and Oncken, Onno and Bock, G{\"u}nter and Asch, G{\"u}nter and Schurr, B. and Gr{\"a}ber, F. and Rudloff, Alexander and Hanka, W. and Wylegalla, Kurt and Tibi, R. and Haberland, Christian and Rietbrock, Andreas and Giese, Peter and Wigger, Peter and Rower, P. and Zandt, G. and Beck, S. and Wallace, T. and Pardo, M. and Comte, D.}, title = {Subduction and collision processes in the Central Andes constrained by converted seismic phases}, year = {2000}, language = {en} }