全球变化知识资源中心

Knowledge Resources Center for Global Change


Email:
Passwd
验证:
	换一张
Have you forgotten your password? Stay signed in Log In

globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0162069
论文题名:	Highly Directional Sonar Beam of Narwhals (Monodon monoceros) Measured with a Vertical 16 Hydrophone Array
作者:	Jens C. Koblitz; Peter Stilz; Marianne H. Rasmussen; Kristin L. Laidre
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2016
发表日期:	2016-11-9
卷:	11, 期:11
语种:	英语
英文关键词:	Sea ice ; Echolocation ; Sonar ; Animal signaling and communication ; Killer whales ; Beaked whales ; Bioacoustics ; Whales
英文摘要:	Recordings of narwhal (Monodon monoceros) echolocation signals were made using a linear 16 hydrophone array in the pack ice of Baffin Bay, West Greenland in 2013 at eleven sites. An average -3 dB beam width of 5.0° makes the narwhal click the most directional biosonar signal reported for any species to date. The beam shows a dorsal-ventral asymmetry with a narrower beam above the beam axis. This may be an evolutionary advantage for toothed whales to reduce echoes from the water surface or sea ice surface. Source level measurements show narwhal click intensities of up to 222 dB pp re 1 μPa, with a mean apparent source level of 215 dB pp re 1 μPa. During ascents and descents the narwhals perform scanning in the vertical plane with their sonar beam. This study provides valuable information for reference sonar parameters of narwhals and for the use of acoustic monitoring in the Arctic.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0162069&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/25509
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

Files in This Item:

File Name/ File Size	Content Type	Version	Access	License
journal.pone.0162069.PDF（2424KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Bioacoustics Network, Neuss, Germany;Bioacoustics Network, Hechingen, Germany;The University of Iceland’s research center in Húsavík, Húsavík, Iceland;Polar Science Center, Applied Physics Laboratory, University of Washington, Seattle, United States of America

Recommended Citation:

Jens C. Koblitz,Peter Stilz,Marianne H. Rasmussen,et al. Highly Directional Sonar Beam of Narwhals (Monodon monoceros) Measured with a Vertical 16 Hydrophone Array[J]. PLOS ONE,2016-01-01,11(11)

Service
	Recommend this item
	Sava as my favorate item
	Show this item's statistics
	Export Endnote File
Google Scholar
	Similar articles in Google Scholar
	[Jens C. Koblitz]'s Articles
	[Peter Stilz]'s Articles
	[Marianne H. Rasmussen]'s Articles
百度学术
	Similar articles in Baidu Scholar
	[Jens C. Koblitz]'s Articles
	[Peter Stilz]'s Articles
	[Marianne H. Rasmussen]'s Articles
CSDL cross search
	Similar articles in CSDL Cross Search
	[Jens C. Koblitz]‘s Articles
	[Peter Stilz]‘s Articles
	[Marianne H. Rasmussen]‘s Articles
Related Copyright Policies
Null
收藏/分享