Abstract
An experiment measuring sonic reflectivities below 1 kHz was done beneath large smooth ice floes in the Arctic Ocean north of Ellesmere Island. Reflectivity data are presented here for grazing angles between 14 ° and 26 °. The reflectivity is found strongly dependent on frequency as well as grazing angles. Theoretical discussions are given to interpret the data. The most significant finding of this report is that a smooth ice plate cannot be treated as totally reflective for frequencies between 200 Hz and 1 kHz, an assumption which has so far been taken for granted in the literature. In fact, the reflection loss at smooth, flat ice could account for a substantial part of the transmission loss in Arctic oceans for this frequency range.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
