Megan S. Ballard

TL;DR: In this article, a 3D model of sediment sound speed for a 90-km2 area on the New Jersey shelf was constructed by application of a geoacoustic inversion technique, based on a combination of seismic reflection measurements and a perturbative inversion scheme using horizontal wave number estimates.

TL;DR: An acoustic propagation model is applied to predict measurements of three-dimensional effects recorded off the southeast coast of Florida and it is shown that the topography of the seafloor plays the largest role in controlling horizontal refraction effects, whereas the range-dependent sediment properties have the most influence on the received level.

TL;DR: In this paper, the acoustic coring system (ACS) was used to measure sediment sound-speed profiles using two sets of transducers mounted below the penetrating tip of a sediment corer to make in situ measurements of geoacoustic properties.

TL;DR: A linearized perturbative inverse technique is applied to estimate range-dependent water column sound speed profiles and utilizes estimates of horizontal wave numbers to determine sound speed as a function of depth.

TL;DR: Three-dimensional propagation effects of low frequency sound from 100 to 400 Hz caused by seafloor topography and range-dependent bottom structure over a 20 km range along the New Jersey shelf are investigated using a hybrid modeling approach.