Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers
This thesis encompasses an analysis of underwater ambient noise collected by the yearlong Canada Basin Acoustic Propagation Experiment (CANAPE) on the Chukchi Shelf of the Arctic. This location contained the Beaufort Duct, a significant effect of climate change on the Arctic’s underwater soundscape....
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| Format: | Thesis |
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Massachusetts Institute of Technology
2023
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| Online Access: | https://hdl.handle.net/1721.1/147416 |
| _version_ | 1826199713462878208 |
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| author | Fung, LTJG Kathryn |
| author2 | Bonnel, Julien |
| author_facet | Bonnel, Julien Fung, LTJG Kathryn |
| author_sort | Fung, LTJG Kathryn |
| collection | MIT |
| description | This thesis encompasses an analysis of underwater ambient noise collected by the yearlong Canada Basin Acoustic Propagation Experiment (CANAPE) on the Chukchi Shelf of the Arctic. This location contained the Beaufort Duct, a significant effect of climate change on the Arctic’s underwater soundscape. A study of the statistical and probability metrics was conducted on a frequency band of 50-1900 Hz to examine the relation between environmental drivers and noise patterns. The presence of ice typically decreases broadband ambient noise, when compared to ice-free seas. However, the Beaufort Duct under ice increases the ambient noise levels below 1 kHz. The relationship between ambient noise and the environment is further explored by studying the link between distant ice movements and ambient levels Correlation between the two is found to exist from 300-1500 Hz, as distant ( 500 km) ice drift motion appears to drive noise levels at the receiver. [Work supported by the Office of Naval Research] |
| first_indexed | 2024-09-23T11:24:33Z |
| format | Thesis |
| id | mit-1721.1/147416 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T11:24:33Z |
| publishDate | 2023 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1474162023-01-20T03:39:31Z Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers Fung, LTJG Kathryn Bonnel, Julien Massachusetts Institute of Technology. Department of Mechanical Engineering Joint Program in Oceanography/Applied Ocean Science and Engineering This thesis encompasses an analysis of underwater ambient noise collected by the yearlong Canada Basin Acoustic Propagation Experiment (CANAPE) on the Chukchi Shelf of the Arctic. This location contained the Beaufort Duct, a significant effect of climate change on the Arctic’s underwater soundscape. A study of the statistical and probability metrics was conducted on a frequency band of 50-1900 Hz to examine the relation between environmental drivers and noise patterns. The presence of ice typically decreases broadband ambient noise, when compared to ice-free seas. However, the Beaufort Duct under ice increases the ambient noise levels below 1 kHz. The relationship between ambient noise and the environment is further explored by studying the link between distant ice movements and ambient levels Correlation between the two is found to exist from 300-1500 Hz, as distant ( 500 km) ice drift motion appears to drive noise levels at the receiver. [Work supported by the Office of Naval Research] S.M. 2023-01-19T19:48:46Z 2023-01-19T19:48:46Z 2022-09 2022-10-05T13:45:53.945Z Thesis https://hdl.handle.net/1721.1/147416 In Copyright - Educational Use Permitted Copyright MIT http://rightsstatements.org/page/InC-EDU/1.0/ application/pdf Massachusetts Institute of Technology |
| spellingShingle | Fung, LTJG Kathryn Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers |
| title | Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers |
| title_full | Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers |
| title_fullStr | Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers |
| title_full_unstemmed | Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers |
| title_short | Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers |
| title_sort | oceanic ambient noise in the arctic on the chukchi shelf broadband characteristics and environmental drivers |
| url | https://hdl.handle.net/1721.1/147416 |
| work_keys_str_mv | AT fungltjgkathryn oceanicambientnoiseinthearcticonthechukchishelfbroadbandcharacteristicsandenvironmentaldrivers |