A total of 336 three-component strong-motion recordings from the Mw 6.35 Niu Dou earthquake of 25 June 1995 at a focal depth of 39.9 km in northern Taiwan are used to study the effects on strong ground motion due to Moho reflection of S waves. The residuals of both horizontal peak ground acceleration (PGA) and peak ground velocity (PGV) recorded from the earthquake are analyzed. The results con...

The high elevation and considerable length of the Transantarctic Mountains have led to speculation about their origin. To date, no model has been able to adequately reconcile the juxtaposition of the high, curvilinear Transantarctic Mountains with the adjacent West Antarctic Rift System, a broad region of thin extended continental crust exhibiting wide rift characteristics. We present a fi rst-...

Introduction: Studies of the compensation state and evolution of lunar impact basins using gravity and topography data have revealed much about the early thermal history of the Moon [e.g. 1, 2, 3]. While Mars has had a far more complex history, it is likely that the ancient martian impact basins also have much to tell us about the early thermal evolution of the planet. To address this, here we ...

S U M M A R Y We present a neural network approach to invert surface wave data for a global model of crustal thickness with corresponding uncertainties. We model the a posteriori probability distribution of Moho depth as a mixture of Gaussians and let the various parameters of the mixture model be given by the outputs of a conventional neural network. We show how such a network can be trained o...

[1] Analysis of receiver functions from an eight-station network on the Saudi Arabian shield indicates that the Moho depths vary between 35–38 km. The crust appears to be rather felsic in nature as evidenced by Poisson’s ratios of 0.25–0.27. A prominent negative phase following the Moho conversion is suggestive of a zone of velocity inversion. Indication of mantle stratification is observed ben...

The Moho discontinuity plays an important role in crustal growth and evolution. In this study, we delineate the geometry southern California by jointly using local Moho-reflected waves PmP teleseismic Moho-converted Ps. To well constrain geometry, have developed a two-stage process to pick created reliable travel time data set with total of 10,192 picks. We also extracted 38,648 high-quality P-...

S U M M A R Y The structure of the oceanic crust conforms in general to a very simple model. However, fine-scale variations of this structure in anomalous regions (such as beneath oceanic islands) remain poorly resolved. Here we examine teleseismic receiver functions (RFs) computed at four permanent broadband seismic stations on islands in the Pacific region. The RF method is ideal for examinin...

Abstract Lithospheric deformation is a fundamental process in plate tectonics. It is, therefore, critical to determine how the lithosphere responds geological loads better understand tectonic processes. The can be modelled as flexure of thin, elastic over long-term (> 10 5 yr) timescales. partial differential equation for an orthotropic used indirectly calculate theoretical admittance and co...

Deep long-period events (DLP events) or deep low-frequency earthquakes (deep LFEs) are deep earthquakes that radiate low-frequency seismic waves. While tectonic deep LFEs on plate boundaries are thought to be slip events, there have only been a limited number of studies on the physical mechanism of volcanic DLP events around the Moho (crust-mantle boundary) beneath volcanoes. One reasonable mec...