Measured surface and bottom reflection loss and scattering on the Chukchi Shelf observed during the 2016–2017 Canada Basin Acoustic Propagation Experiment

Abstract

During the 2016–2017 Canada Basin Acoustic Propagation Experiment (CANAPE), acoustic transmissions were recorded from both deep- and shallow-water sources on a set of moored receivers, over the course of nearly one year, in ice-covered and open water conditions. One of the source-receiver geometries included LFM transmissions of 4000–1500 Hz and 1100–700 Hz recorded on an eight-element volumetric array at a distance of approximately 400 m. Surface, bottom, and sub-bottom reflections are observed in the data and are used to infer ice and sediment geo-acoustic properties. Some observations about bistatic scattering are also made.