S. C. Singh

TL;DR: Waveform inversion of seismic reflection data can be used to estimate from seismic data worldwide the velocity structure of a BSR and its thickness, and predicts that sediment pores beneath the BSR contain free methane for approximately 30 meters.

TL;DR: In this article, the authors investigate the origin of a high amplitude BSR in the accretionary wedge offshore of western Colombia by seismic waveform inversion, which consists of three steps: firstly, determination of root-mean-square velocities and hence estimates of the interval Velocities between major reflectors by a global grid search for maximum normalized energy along elliptical trajectories in the intercept time-slowness domain; secondly determination of accurate interval velocity between these reflectors, by a Monte Carlo search for the maximum energy; and thirdly,

TL;DR: In this paper, a tomographic inversion method is presented for the determination of 3D velocity and interface structure from a wide range of body-wave seismic traveltime data types, including refraction, wide-angle reflection, normal-incidence and multichannel seismic data, and is best suited to a combination of these that provides good independent constraints on seismic velocities and interface depths.

TL;DR: An effective medium theory for composite materials is used and shows that the presence of a volume fraction of 3 to 10% liquid in the form of oblate spheroidal inclusions aligned in the equatorial plane between iron crystals is sufficient to explain the aforementioned seismic phenomena.

TL;DR: In this article, strong bottom-simulating reflectors (BSR) have been mapped over a region of approximately 50,000 km2 on the southeastern U.S. margin and have been associated with possible abundance of natural gas hydrates.