SUMMARY P-to-S and S-to-P receiver functions are widely used to constrain the seismic discontinuity structures of Earth. Typically, projected depth location conversion assuming a 1-D layered Earth structure. Receiver function finite frequency sensitivity kernels have potential increase resolution. Here we present method for rapidly calculating P- S-wave kernels, based upon shortest path Dijkstr...

During an era when observations from spacecraft have produced the great majority of new information about the solar system, observations of solar-system bodies from the Earth, using high-powered radar systems, have produced some remarkable results. These include the discovery of condensed volatiles, most likely water ice, at the poles of Mercury; the high-resolution imaging of main-belt and nea...

We present a new approach to account for the influence of subglacial topography on geothermal heat flux beneath Greenland and Antarctic ice sheets. first establish simple empirical proportionality between local topographic relief within given radius, based synthesis existing observations these properties elsewhere Earth. This analysis essentially yields high-pass filter that can be readily appl...

Large ripples form striking patterns on the slopes of martian sand dunes which can be mapped and tracked using high-resolution optical images. The vary in orientation, wavelength, plan-view morphology, rates migration. variations ripple are recognized to signal effects regional local winds feedbacks between dune topography. We examine motion these interpret airflow dynamics around field at Nili...

GLISTIN is an instrument concept for a single-pass interferometric SAR operating at 35.6 GHz. To achieve large swath widths using practical levels of transmitter power, a digitally-beamformed planar waveguide array is used. This paper describes results from a ground-based demonstration of a 16-receiver prototype. Furthermore, SweepSAR is emerging as promising technique for achieving very wide s...

Data obtained recently by the Mars Orbiter Laser Altimeter (MOLA) were used to study the statistical properties of the topography and slopes on Mars. We find that the hemispheric dichotomy, manifested as an elevation difference, can be described by long baseline tilts but in places is expressed as steeper slopes. The bimodal hypsometry of elevations on Mars becomes unimodal when referenced to t...

Abstract. Determining the future evolution of Antarctic Ice Sheet is critical for understanding and narrowing large existing uncertainties in century-scale global mean sea-level-rise (SLR) projections. One most significant glaciers ice streams Antarctica, Thwaites Glacier, at risk destabilization and, if destabilized, has potential to be largest regional-scale contributor SLR on Earth. This bec...

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SUMMARY The core–mantle boundary (CMB) is the most abrupt internal discontinuity in Earth, marking solid–fluid between mantle and outer core that strongly affects dynamics of Earth’s interior. However, good agreement models CMB topographic variations still lacking. This probably due to difficulties relating observations on seismograms lack lowermost velocity structure. Using spectral-element sy...