Journal of Geophysical Research: Solid Earth

Cover image for Vol. 119 Issue 6

Impact Factor: 3.174

ISI Journal Citation Reports © Ranking: 2012: 23/170 (Geosciences Multidisciplinary)

Online ISSN: 2169-9356

Associated Title(s): Journal of Geophysical Research

Featured

  • Volcanic tremor recorded at seismic stations surrounding Mount St. Helens on Oct 2, 2004, with ground velocity in a different color for each station

    Volcanic tremor recorded at seismic stations surrounding Mount St. Helens on Oct 2, 2004, with ground velocity in a different color for each station

    The tremor recorded at all stations around the volcano that remained unclipped is shown here scaled to the signal at JRO and time shifted slightly so that all station signals can be compared on the same plot. Each signal consists of the earthquake immediately preceding the tremor followed by 49 min of tremor. These signals are divided into ten bins (0–9), with 0 being the earthquake. Bins 1–9 are each 5.4 min long. The signals within each bin are analyzed for changes in signal character with frequency and with time.

  • Collision of Three Fluids

    Collision of Three Fluids

    Collision of three fluids: Two fluids are issued from different sources each with different strengths. A third fluid comes in from the top of the image. Red contours around the point sources are isochrons, blue curves are the emanating streamlines. Far-field flowlines are green and black isochrons show progressive displacement of the far-field fluid. All isochrons are spaced for equal time steps. Analytical description is valid for laminar flow of incompressible fluids with equal viscosities.

  • Photograph of the 17 June 1996 Ruapehu plume, New Zealand

    Photograph of the 17 June 1996 Ruapehu plume, New Zealand

    Photograph of the 17 June 1996 Ruapehu plume, New Zealand.

  • The Effect of Non Stationary Noise in Magnetotelluric Data Processing

    The Effect of Non Stationary Noise in Magnetotelluric Data Processing

    Southern Africa data (site 072) jammed with synthetic nonstationary electric noise. (a) The electric field channel with and without the added noise to illustrate the impact of the noise compared to the data. (b) Section of the added noise to emphasize that both amplitude and frequency contents of this noise is clearly nonstationary.

  • Extensive Experimental Evidence for the Velocity-strengthening Behavior of Dry Friction

    Extensive Experimental Evidence for the Velocity-strengthening Behavior of Dry Friction

    (a–i) Experimental observations of steady state velocity-strengthening friction in various materials. In each panel the region corresponding to velocity-weakening friction (light blue background) is separated by a vertical dashed line from the subsequent region corresponding to velocity-strengthening friction (light purple background). White background corresponds to either velocity-independent friction or a region that is not discussed in this paper. In all of the panels the horizontal axis is logv and the vertical panel is either τss or μss, with the exception of Figures d and e, where the vertical axis corresponds to the logarithmic derivative of the friction coefficient, ∂μss/∂ logv. Green dashed lines mark logarithmic SVW, while red dotted lines mark logarithmic SVS. The figure is described in detail in section 5.

  • Shear-wave Splitting and Mantle Flow Model Beneath the Northern Great Plains of North America

    Shear-wave Splitting and Mantle Flow Model Beneath the Northern Great Plains of North America

    Schematic diagram showing direction of flow lines in the asthenosphere relative to the lithosphere with a background of P wave velocity anomalies at the depth of 200 km [Burdick et al., ]. The short solid arrows indicate shear strain in the asthenosphere beneath the continent associated with APM, and the thick dashed arrows represent flow deflected by the bottom of the North American lithosphere and flow in the lithospheric channel. The thin bars represent individual shear wave splitting measurements, and the black dot is the joint point of the flow systems. The purple dash lines isolate five zones with different dominant anisotropy-forming mechanisms.

  • Volcanic tremor recorded at seismic stations surrounding Mount St. Helens on Oct 2, 2004, with ground velocity in a different color for each station
  • Collision of Three Fluids
  • Photograph of the 17 June 1996 Ruapehu plume, New Zealand
  • The Effect of Non Stationary Noise in Magnetotelluric Data Processing
  • Extensive Experimental Evidence for the Velocity-strengthening Behavior of Dry Friction
  • Shear-wave Splitting and Mantle Flow Model Beneath the Northern Great Plains of North America

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