Sponsor
The authors gratefully acknowledge the support of Office of Naval Research Grant No. N00014-20-S-B001. The measurements were made possible by the CLUTTER JRP, a collaboration among ARL-PSU (USA), DRDC-A (Canada), the NATO Undersea Research Centre (Italy), and NRL (USA). The computational work was carried out on parallel high-performance computing clusters. One was operated by the authors at the University of Victoria, funded by the Natural Sciences and Engineering Research Council of Canada and the Office of Naval Research, and there were three clusters of the Digital Research Alliance of Canada (alliancecan.ca): Cedar (Simon Fraser University, BC DRI Group), Graham (University of Waterloo, Compute Ontario) and Beluga (McGill University, Calcul Québec).
Published In
JASA Express Letters
Document Type
Article
Publication Date
6-1-2025
Subjects
Seabeds -- geoacoustic properties
Abstract
This study presents a probabilistic one-step two-dimensional (2D) inversion method of spherical-wave reflection coefficient data to estimate the range-dependent structure and geoacoustic parameters along a track. The approach of inverting such datasets independently as one-dimensional (1D) layered models and merging them to a 2D section is feasible but computationally expensive. This study demonstrates a more parsimonious 2D parametrization for active source data recorded on a towed hydrophone array. The comparison of data variance reduction for 1D- and 2D-based results clearly favors the 2D parametrization described here.
Rights
© 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Locate the Document
DOI
10.1121/10.0036835
Persistent Identifier
https://archives.pdx.edu/ds/psu/43689
Publisher
Acoustical Society of America (ASA)
Citation Details
Sonnemann, T., Dettmer, J., Holland, C. W., & Dosso, S. E. (2025). Range-dependent meso-scale geoacoustic seabed quantification. JASA Express Letters, 5(6).