• MICROSTRUCTURE AND LATTICE PREFERRED ORIENTATION OF CALCITE MYLONITES AT THE BASE OF THE SOUTHERN URALS ACCRETIONARY PRISM 

  Fernandez F.J.; Brown D.; Alvarez-Marron J.; Prior D.J.; Perez-Estaun A. (2004)

  Emplacement of the southern Urals accretionary complex onto the East European Craton involved off-scraping of shallow marine limestones from the continental margin and their underplating to the base of the accretionary ...
• CLASSIFICATION OF REFOLD STRUCTURES 

  Grasemann B.; Wiesmayr G.; Draganits E.; Fusseis F. (2004)

  Structural geology textbooks distinguish among four end members of three-dimensional refold structures established from their two-dimensional interference patterns. Here it is shown that six different end members of ...
• A METHOD FOR CALCULATING EFFECTIVE BULK COMPOSITION MODIFICATION DUE TO CRYSTAL FRACTIONATION IN GARNET-BEARING SCHIST: IMPLICATIONS FOR ISOPLETH THERMOBAROMETRY 

  Evans T.P. (2004)

  Quantitative P -T path determination in metamorphic rocks is commonly based on the variation in composition of growth-zoned garnet. However, some component of growth zoning in garnet is necessarily the result of an effective ...
• GLOBAL P AND PP TRAVELTIME TOMOGRAPHY: RAYS VERSUS WAVES 

  Montelli R.; Nolet G.; Masters G.; Dahlen F.A.; Hung S.H. (2004)

  This paper presents a comparison of ray-theoretical and finite-frequency traveltime tomography for compressional waves. Our data set consists of 86 405 long-period P and PP-P traveltimes measured by cross-correlation. The ...
• USING COMMERCIAL FINITE ELEMENT PACKAGES FOR THE STUDY OF EARTH DEFORMATIONS, SEA LEVELS AND THE STATE OF STRESS 

  Wu P. (2004)

  Modifications to commercial finite element (FE) packages must be applied before they can be used for geophysical studies involving long wavelength deformation or viscoelasticity. This paper provides in detail how and why ...
• THE ROLE OF INERTIA IN MODELS OF THE GEODYNAMO 

  Fearn D.R.; Rahman M.M. (2004)

  Numerical studies of the geodynamo have taken different views on the importance of inertial effects. Some have neglected inertia, while others have boosted its strength, in much the same way as they have had to take an ...
• IMPROVEMENT OF SEISMOLOGICAL EARTH MODELS BY USING DATA WEIGHTING IN WAVEFORM INVERSION 

  Takeuchi N.; Kobayashi M. (2004)

  We present a new method for data weighting in waveform inversion to improve the obtained seismological earth model. We define 'sensitivity' as an index to show the homogeneity of the waveform inversion data set. The ...
• CORE-MANTLE RELATIVE MOTION AND COUPLING 

  Vanyo J.P. (2004)

  Core motion induced by lunisolar precession of the mantle is analysed and compared with experiments and Earth observations. First-order motion has the core axis lagging the mantle axis in precession by a small angle. This ...
• D-REX, A PROGRAM FOR CALCULATION OF SEISMIC ANISOTROPY DUE TO CRYSTAL LATTICE PREFERRED ORIENTATION IN THE CONVECTIVE UPPER MANTLE 

  Kaminski E.; Ribe N.M.; Browaeys Ju.T. (2004)

  Models of development of lattice preferred orientation (LPO) of crystals aggregates in convective flow are necessary to interpret the anisotropic seismic signature of the Earth's upper mantle. For that purpose we previously ...
• IS 600 MYR LONG ENOUGH FOR THE RANDOM PALAEOGEOGRAPHIC TEST OF THE GEOMAGNETIC AXIAL DIPOLE ASSUMPTION? 

  McFadden P.L. (2004)

  A simple analysis suggests that a time interval of more than about 5000 Myr is needed for the random palaeogeographic test to be effective in assessing the geomagnetic axial dipole assumption. This time is so long as to ...
• THE DUSTYWINGS IN CRETACEOUS BURMESE AMBER (INSECTA: NEUROPTERA: CONIOPTERYGIDAE) 

  Engel M.S. (2004)

  The dustywing fauna (Neuroptera: Coniopterygidae) of Upper Albian Burmese amber is revised. Two species are recognised, one belonging to the subfamily Aleuropteryginae and one to the Coniopteryginae. The aleuropterygine ...
• A NEW GENUS AND SPECIES OF PISAURIDAE (ARANEAE) IN CRETACEOUS BURMESE AMBER 

  Penney D. (2004)

  The oldest pisaurid spider Palaeohygropoda myanmarensis gen. et sp. nov. (Araneae: Pisauridae) is described from 100-107 Mya (Albian) Cretaceous amber (Burmite) from Myanmar (Burma). This specimen extends the known range ...
• FORMS OF HYDROTHERMAL AND HYDRAULIC FLOW IN A HOMOGENEOUS UNCONFINED AQUIFER 

  Cserepes L.; Lenkey L. (2004)

  Groundwater flow in an unconfined aquifer (a porous layer with an open top) can be driven either by hydraulic forces, i.e. the gradient of the water table, or by differences in the density of porewater due to thermal ...
• REFINEMENT INDICATORS FOR OPTIMAL SELECTION OF GEOSTATISTICAL REALIZATIONS USING THE GRADUAL DEFORMATION METHOD 

  Schaaf T.; Chavent G.; Mezghani M. (2004)

  In the analysis of petroleum reservoirs, one of the most challenging problems is to use inverse theory in the search for an optimal parameterization of the reservoir. Generally, scientists approach this problem by computing ...
• COMPARISON OF KRIGING AND NEURAL NETWORKS WITH APPLICATION TO THE EXPLOITATION OF A SLATE MINE 

  Matias J.M.; Vaamonde A.; Taboada J.; Gonzalez-Manteiga W. (2004)

  To carry out an efficient and effective exploitation of a slate mine, it is necessary to have detailed information about the production potential of the site. To assist us in estimating the quality of slate from a small ...
• THREE-DIMENSIONAL SENSITIVITY KERNELS FOR SURFACE WAVE OBSERVABLES 

  Zhou Y.; Dahlen F.A.; Nolet G. (2004)

  We calculate three dimensional (3-D) sensitivity kernels for fundamental-mode surface wave observables based on the single-scattering (Born) approximation. The sensitivity kernels for measured phases, amplitudes and arrival ...
• SPECTRAL ELEMENT MODELLING OF THREE-DIMENSIONAL WAVE PROPAGATION IN A SELF-GRAVITATING EARTH WITH AN ARBITRARILY STRATIFIED OUTER CORE 

  Chaljub E.; Valette B. (2004)

  This paper deals with the spectral element modelling of seismic wave propagation on a global scale. Two aspects relevant to low-frequency studies are particularly emphasized. First, the method is generalized beyond the ...
• CALIBRATION OF IN SITU MAGNETIC SUSCEPTIBILITY MEASUREMENTS 

  Gattacceca J.; Eisenlohr Ph.; Rochette P. (2004)

  The aim of this work is to calibrate a magnetic susceptibility field probe (SM30) in order to allow measurement on natural boulders of any shape and size. This calibration was performed through measurements on pebbles of ...
• ON INTERPOLATION FUNCTIONS IN TRAVELTIME TOMOGRAPHY 

  Miyazawa M.; Kato M. (2004)

  Grid representation of 3-D media and linear interpolation functions have been widely used in recent seismic traveltime tomographic studies. Either velocity or slowness is used as a model parameter in such studies, which ...
• ESTIMATION OF MAGNETOTELLURIC TRANSFER FUNCTIONS IN THE TIME DOMAIN OVER A WIDE FREQUENCY BAND 

  Nowozynski K. (2004)

  Determination of the transfer function is the main objective in magnetotelluric (MT) and geomagnetic data processing. In this paper we describe a new algorithm for finding a transfer function through determination of the ...

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