Ray modeling in shallow water

Shallow Water Propagation and Surface Reverberation Modeling

The primary long-term goal is to measure and model high-frequency acoustic propagation in the presence of surface gravity waves and breaking waves to better understand the effects of surface reverberation on shallow water, underwater acoustic communications (ACOMS). Secondary long-term goals are to exploit measurements of breaking wave noise to infer bubble cloud populations at the sea surface ...

Shallow water modeling of Antarctic Bottom Water Crossing the Equator

[1] The dynamics of abyssal equator-crossing flows are examined by studying simplified models of the flow in the equatorial region in the context of reduced-gravity shallow water theory. A simple ‘‘frictional geostrophic’’ model for one-layer cross-equatorial flow is described, in which geostrophy is replaced at the equator by frictional flow down the pressure gradient. This model is compared v...

Low Frequency Acoustic Intensity Propagation Modeling in Shallow Water Waveguides

Modeling of Mid-Frequency Reverberation in Very Shallow Water

A specific objective of this research is to develop a mid-frequency shallow-water reverberation model relevant to specific conditions (1 – 10 kHz, ~20 m water depth, ~ 5 km range) of the ONR Target and Reverberation experiment [1] performed during the spring of 2013 (TREX13). The research is to result in developing computer simulation codes and algorithms for the TREX13 acoustic data analysis b...

A GPU Implementation for Two-Dimensional Shallow Water Modeling

Two dimensional water flow simulations are useful for engineering firms to model floods, river/reservoir behavior, and dam break scenarios. These models allow us to estimate the consequences of such events, which can determine the allocation of funds towards high-risk areas. Much of the work in flood modeling still uses one-dimensional solutions, which model the river as a series of cross-secti...