Abstract Tangkuban Parahu is an active volcano in Indonesia that part of the Quaternary Sunda volcanic arc. We used vertical component waveform recorded by 55 temporary seismic stations deployed around from October 2021 to February 2022 gain a thorough understanding its structure. To extract empirical Green’s functions, we computed cross-correlations continuous record data. The function was ext...

An approach of Green’s function is adopted to solve the inhomogeneous linear differential equations representing wave equations in piezo-composite materials. In particular, transference of horizontally polarised shear (SH) waves is considered in bedded structure comprising of porous-piezo electric layer lying over a heterogeneous half-space. Propagation of SH-waves is considered to be influence...

Rayleigh and Love waves recorded on seismic-shot gathers can be used to determine the thickness and shear-wave velocity of shallow subsurface layers. After the data are transformed into the k-f domain, the dispersion curve for each of the phases can be picked from maxima on the contour plot. This dispersion curve is then inverted for the velocities and depths. Different frequencies in the dispe...

The radiation force exerted on an object by acoustic wave is a widely studied phenomenon since the early work of Rayleigh, Langevin and Brillouin has led in last decade to tremendous developments for micromanipulation. Despite extensive this phenomenon, expressions applied particle have so far been derived only steady particle, hence neglecting effect its displacement radiated wave. In we study...

ne Radarsat-1 SAR image acquired on 31 July 1998 was used to study internal wave characteristics off the northeastern coast of the United States. The image showed several trains of internal waves, with several wave packets in each train. By assuming that the local semidiurnal tide period is the generating source for these waves, and by measuring the distance between the wave packets, we were ab...

Three-dimensional AE-Tomography computes source locations of AE and reconstructs elastic wave velocity distribution simultaneously from arrival times of AE at receivers. Its algorithm is summarized that elastic wave velocity distribution is updated by using estimated travel times with conventional elastic wave velocity tomography technique. The estimated travel time is obtained as a difference ...