Stanley M. Flatté

TL;DR: In this article, the AET of the Acoustic Thermometry of Ocean Climate (ATOC) program, acoustic signals were transmitted from a broadband source with 75-Hz center frequency to a 700-m-long vertical array of 20 hydrophones at a distance of 3252 km; receptions occurred over a period of six days.

TL;DR: In this article, the authors calculated the irradiance variance for optical propagation through atmospheric turbulence by numerical simulation, where l0 is the inner scale, Rf is the Fresnel scale, and β02 is the weak-fluctuation irradiances variance at zero inner scale.

TL;DR: In this paper, the effects of ocean internal waves on long-range acoustic pulse propagation from a geometrical-optics point of view are investigated, and it is concluded that the observed depth diffusion of energy in the late-arriving portion of the timefront is a result of refraction, not diffraction, and the strength of the rays' sensitivity to initial conditions depend on the average (range-independent) sound-speed profile, on the range from the source to the receiver, and on the internal-wave spectral model, but not on specific realization of the

TL;DR: In this article, the authors analyzed short-period PKP precursor wave trains recorded at Global Digital Seismograph Network stations in the distance range 120° < Δ < 140° to infer the nature of inhomogeneities near the core-mantle boundary.

TL;DR: In this article, the effects of internal waves can account for the broadband fluctuations, the breakdown of the geometrical optics wavefront pattern and broadening of the wavefront near the transmission finale, and a coherent wavefront motion with a timescale near the semi-diurnal tidal period.