Way Ahead for the Underwater Radiated Noise Management
Dr. (Cdr.) Arnab Das
Founder and Director, MRC, Pune
Way Ahead for the Underwater Radiated Noise Management
Underwater Radiated Noise (URN) is increasingly becoming a serious environmental concern across the globe, and the international community is aggressively getting into means and measures to contain this problem. The United Nations Sustainable Development Goals – 14 (UN-SDG – 14), clearly highlights the need to contain noise underwater. Shipping noise is recorded to be increasing at an alarming rate of 3.3 dB per decade. It is doubling every decade, as per recordings underwater since 1950, published by Donald Ross. Analytical efforts by G V Frisk have also given similar figures. Shipping noise is the single ubiquitous source of low frequency noise in the ocean. The low frequency means minimal attenuation while propagating underwater, so the impact of URN is over an extended range (over a few thousand kilometres). Since shipping is directly coupled to economic growth, measures to contain shipping traffic are socio-economically and politically unviable.
Full Article Content
Sign in to read the complete article.
Dr. (Cdr.) Arnab Das
Founder and Director, MRC, Pune
Dr. (Cdr) Arnab Das, Director and Founder of MRC, Pune. Dr Das is an ex Naval officer with 2 decades of active services and PhD holder from IIT Delhi with specialization in Underwater Acoustics. He has worked on several projects and has a plethora of publications to his credit.