Context. There are many unknowns in the formation of subdwarf B stars. Different formation channels are considered to be possible and to lead to a variety of helium-burning subdwarfs. All seismic models to date, however, assume that a subdwarf B star is a posthelium-flash-core surrounded by a thin inert layer of hydrogen. Aims. We examine an alternative formation channel, in which the subdwarf ...

[1] We report on seismic and petrological data that provide new constraints on the geological evolution of the Amerasia Basin. A seismic reflection transect across the Makarov Basin, located between the Mendeleev and Lomonosov Ridges, shows a complete undisturbed sedimentary section of Mesozoic/Cenozoic age. In contrast to the Mendeleev Ridge, the margin of the Lomonosov Ridge is wide and shows...

An investigation is described of the hydroelastically coupled motion a cylindrical tank partially filled with liquid in response to travelling seismic wave excitation. The continuous phase variation vertical excitation along base causes flexible wall vibration modes positive circumferential numbers. stress analysis for this crucial case conducted paper. analytical explanation velocity dependenc...

Abstract Seismic behavior analysis of the long-span cable-stayed bridge is a complex process involving different uncertainties. This paper performs sensitivity bridges using finite element method on Midas/Civil. They include types ground motions scaled to peak acceleration (PGA) levels, effect multi-support excitations due time-lag propagation or nonsynchronous excitations, and angle incidence ...

The responses of the Ross Ice Shelf (RIS) to the 16 September 2015 8.3 (Mw) Chilean earthquake tsunami (>75 s period) and to oceanic infragravity (IG) waves (50–300 s period) were recorded by a broadband seismic array deployed on the RIS from November 2014 to November 2016. Here we show that tsunami and IG-generated signals within the RIS propagate at gravity wave speeds ( 70 m/s) as water-ice ...

Parallel manipulators are increasingly used in new applications by exploiting their better characteristics with respect to those of serial manipulators, such as higher stiffness, velocity and acceleration, payload. In this paper, experimental results are presented of a novel application of a 3-DOF CaPaMan (Cassino Parallel Manipulator) prototype to simulate point seismograms and 3D earthquake m...