scholarly journals Multipole analysis of the directionality of ambient noise in the Arctic

1981 ◽  
Vol 69 (S1) ◽  
pp. S20-S20
Author(s):  
G. C. Gaunaurd
Keyword(s):  
Ambient Noise ◽  
The Arctic ◽  
Multipole Analysis

Ambient noise in the Arctic Ocean measured with a drifting vertical line array

2015 ◽  
Vol 138 (3) ◽  
pp. 1744-1744
Author(s):  
Peter F. Worcester ◽  
Matthew A. Dzieciuch ◽  
John A. Colosi
Keyword(s):  
Arctic Ocean ◽  
Ambient Noise ◽  
Vertical Line ◽  
The Arctic ◽  
Line Array ◽  
The Arctic Ocean

Ambient noise in the Arctic Ocean measured with a drifting vertical line array

2014 ◽  
Vol 136 (4) ◽  
pp. 2149-2149
Author(s):  
Peter F. Worcester ◽  
Matthew A. Dzieciuch ◽  
John A. Colosi ◽  
John N. Kemp
Keyword(s):  
Arctic Ocean ◽  
Ambient Noise ◽  
Vertical Line ◽  
The Arctic ◽  
Line Array ◽  
The Arctic Ocean

scholarly journals Soundscape and ambient noise levels of the Arctic waters around Greenland

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Michael Ladegaard ◽  
Jamie Macauley ◽  
Malene Simon ◽  
Kristin L. Laidre ◽  
Aleksandrina Mitseva ◽  
...  
Keyword(s):  
Ambient Noise ◽  
Anthropogenic Activities ◽  
Open Water ◽  
Anthropogenic Sources ◽  
The Arctic ◽  
Underwater Noise ◽  
Noise Levels ◽  
Greenland Sea ◽  
Mammal Species ◽  
Seismic Surveys

AbstractA longer Arctic open water season is expected to increase underwater noise levels due to anthropogenic activities such as shipping, seismic surveys, sonar, and construction. Many Arctic marine mammal species depend on sound for communication, navigation, and foraging, therefore quantifying underwater noise levels is critical for documenting change and providing input to management and legislation. Here we present long-term underwater sound recordings from 26 deployments around Greenland from 2011 to 2020. Ambient noise was analysed in third octave and decade bands and further investigated using generic detectors searching for tonal and transient sounds. Ambient noise levels partly overlap with previous Arctic observations, however we report much lower noise levels than previously documented, specifically for Melville Bay and the Greenland Sea. Consistent seasonal noise patterns occur in Melville Bay, Baffin Bay and Greenland Sea, with noise levels peaking in late summer and autumn correlating with open water periods and seismic surveys. These three regions also had similar tonal detection patterns that peaked in May/June, likely due to bearded seal vocalisations. Biological activity was more readily identified using detectors rather than band levels. We encourage additional research to quantify proportional noise contributions from geophysical, biological, and anthropogenic sources in Arctic waters.

scholarly journals Seasonal Patterns in Ocean Ambient Noise near Sachs Harbour, Northwest Territories + Supplementary Appendix 1 (See Article Tools)

ARCTIC ◽  
2017 ◽  
Vol 70 (3) ◽  
pp. 239 ◽  
Author(s):  
Stephen J. Insley ◽  
William D. Halliday ◽  
Tyler De Jong
Keyword(s):  
Sea Ice ◽  
Northwest Territories ◽  
Ambient Noise ◽  
Anthropogenic Sources ◽  
The Arctic ◽  
Ambient Conditions ◽  
Noise Levels ◽  
Marine Animals ◽  
Marine Fauna ◽  
The Impact

Ocean ambient noise is a crucial habitat feature for marine animals because it represents the lower threshold of their acoustically active space. Ambient noise is affected by noise from both natural sources, like wind and ice, and anthropogenic sources, such as shipping and seismic surveys. During the ice-covered season, ambient conditions in the Arctic are quieter than those in other regions because sea ice has a dampening effect. Arctic warming induced by climate change can raise noise levels by reducing sea ice coverage and increasing human activity, and these changes may negatively affect several species of marine mammals and other acoustically sensitive marine fauna. We document ambient noise off the west coast of Banks Island near Sachs Harbour, Northwest Territories, to provide baseline noise levels for the eastern Beaufort Sea. Noise levels were comparable to those found in other studies of the Canadian Arctic and Alaska and were typically much lower than levels reported farther south. Stronger wind increased noise, whereas greater ice concentration decreased it, dampening the effect of wind speed. Future work should expand monitoring to other locations in the Arctic, model the impact of increased human activities on ambient noise levels, and predict the impact of these changing levels on marine animals.

Ambient Noise Measurement System for the Arctic Region

2020 ◽  
Vol 89 (sp1) ◽  
pp. 67
Author(s):  
Thirunavukkarasu Ayyadurai ◽  
Govindan Raguraman ◽  
Muthuraj Ashokan ◽  
Ganesan Latha
Keyword(s):  
Measurement System ◽  
Ambient Noise ◽  
Arctic Region ◽  
Noise Measurement ◽  
The Arctic ◽  
The Arctic Region

scholarly journals Underwater sound to probe sea ice melting in the Arctic during winter

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Madan M. Mahanty ◽  
G. Latha ◽  
R. Venkatesan ◽  
M. Ravichandran ◽  
M. A. Atmanand ◽  
...  
Keyword(s):  
Sea Ice ◽  
Background Noise ◽  
Ambient Noise ◽  
The Arctic ◽  
Ice Melting ◽  
Underwater Sound ◽  
Recent Warming ◽  
Passive Acoustic ◽  
Made In

Abstract Over a 4-year period between 2015 and 2019, in-situ time series measurements of ocean ambient noise over the frequency range 100 Hz to 10 kHz, by an autonomous passive acoustic monitoring system have been made in the Kongsfjorden, Svalbard, Arctic. We characterize the noise due to sea ice melting during winter (December–January). This unique observation reveals loud noise signatures, of the order of 8 dB higher than the background noise, showing the signature of sea ice melting. Such observations are crucial for monitoring sea ice melting, especially during winter, to understand the recent warming of Arctic waters. The anomalous air temperature due to local atmospheric forcing and warming of ocean temperature in the fjord through ocean tunneling, individually or combinedly, is responsible for such sea ice melting. The cyclonic events in the Arctic are responsible for the anomalous atmospheric and ocean conditions, causing sea ice melting in winter.

Higher frequency ambient noise in the Arctic Ocean

1988 ◽  
Vol 84 (4) ◽  
pp. 1444-1455 ◽  
Author(s):  
James K. Lewis ◽  
Warren W. Denner
Keyword(s):  
Arctic Ocean ◽  
Ambient Noise ◽  
The Arctic ◽  
The Arctic Ocean

Under-ice ambient noise in the Arctic Ocean: observations at the long-term ice station

2020 ◽  
Vol 39 (9) ◽  
pp. 125-132
Author(s):  
Xiao Han ◽  
Jingwei Yin ◽  
Yanming Yang ◽  
Hongtao Wen ◽  
Longxiang Guo
Keyword(s):  
Arctic Ocean ◽  
Ambient Noise ◽  
The Arctic ◽  
The Arctic Ocean ◽  
Ocean Observations
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