NDLI: Acoustic variabilities in the central part of the East Sea: Low-frequency acoustic propagation in presence of the Sub-polar front

Content Provider	IEEE Xplore Digital Library
Author	SeHan Lim Seungho Baek Kyoung-Ju Park Ki-Young Lee
Copyright Year	2012
Description	Author affiliation: Republic of Korea Naval Academy, Chang-Won-si, Kyoung-Nam, Republic of Korea (SeHan Lim; Seungho Baek; Kyoung-Ju Park; Ki-Young Lee)
Abstract	Acoustic environmental changes and their effects on underwater sound propagation in the central part of the East Sea are investigated by analyzing available observation data acquired since 1993. The characteristics of underwater acoustic propagation in this area are closely related with various oceanic physical processes such as the Sub-polar front (SPF), eddies, warm and cold currents. Especially, the SPF has been considered as a acoustic barrier against sound propagation across the front. To investigate low frequency underwater acoustic propagations in the SPF of the East Sea, numerical experiments are conducted with Range dependent Acoustic Model (RAM). Significant seasonal variations of sea water properties are existed across the SPF region from the north and the south. The model results show that transmission loss decrease (about 20dB) with ideal front in the warm region whereas transmission loss increase (about 25dB) with ideal front in the cold region.
Starting Page	1
Ending Page	6
File Size	1469697
Page Count	6
File Format	PDF
ISBN	9781457720895
e-ISBN	9781457720918
DOI	10.1109/OCEANS-Yeosu.2012.6263615
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-21
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Water resources Propagation losses Acoustic propagation Convergence Ocean temperature sub-polar front underwater acousti the East Sea
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in