{'fraction_non_alphanumeric': 0.011984021304926764, 'fraction_numerical': 0.0, 'mean_word_length': 5.5964912280701755, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Efficient Simulation Of Shallow Water Acoustic Propagation

An explicit second-order finite difference scheme for solving acoustic and elastic wave equations in the time domain has been implemented on the NRL Connection Machine. This implementation provides for the efficient simulation and modeling of propagation and/or scattering of underwater acoustic waves including such phenomena as nontrivial surface and bottom topography, range dependent sound speeds, heterogeneous environmental parameters, and interaction with shear waves in the bottom sediment. The method is valid for the full range of the near to the far field allows for source modeling, has phase information on the acoustic field, and provides insight into the evolution of the wave