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Jérôme OLLIER

Changes in Underwater Noise and Vessel Traffic in the Approaches to Halifax Harbor, Nov... - 0 views

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    Over the past two years, researchers at Fisheries and Oceans Canada have been running an acoustic monitoring project at multiple study sites throughout Nova Scotia, Canada to investigate baleen whale presence and levels of underwater noise. At the onset of the COVID-19 pandemic, a passive acoustic monitor (PAM) was in place in the study site located in the approaches to Halifax Harbor, a major Canadian port. This provided a unique opportunity to determine if changes in vessel noise levels occurred after pandemic restrictions were put in place. To investigate this, we analyzed and compared acoustic data collected from March 28 to April 28 and August 6 to October 22 in both 2019 and 2020. We also investigated possible changes in vessel traffic from February 1 through April 28 and July 1 through July 28 in 2019 and 2020 using terrestrial-based automatic identification system (AIS) data provided by the Canadian Coast Guard and cargo information provided by the Port of Halifax. The acoustic data were analyzed in 1/3 octave frequency bands. For the 89.1-112 Hz frequency band, we found an 8.4 dB increase in the daily minimum sound pressure level (SPL) in April 2020 compared to April 2019 due the presence of a large crane vessel stationed near the mooring site. For the period of August to October, we found an approximately 1.7 dB reduction in the same metric from 2019 to 2020. The most noticeable change in vessel composition was the dramatic decrease in the number and occurrence of pleasure craft in July 2020 compared to the same period in 2019. While this analysis looked at only a single PAM and a limited amount of data, we observed changes in sound levels in the frequency band known to be associated with shipping as well as changes in vessel traffic; we conclude that these observed changes may be related to pandemic restrictions.
Jérôme OLLIER

Via @IAMSPonline - Houseboat washed up in Ireland after trip from Canada - @weathernetwork - 0 views

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    Houseboat washed up in Ireland after trip from Canada.
Jérôme OLLIER

Canadian waters getting safer, but research gaps limit full understanding of shipping r... - 0 views

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    A new workshop report, Commercial Marine Shipping Accidents: Understanding the Risks in Canada, released today by the Council of Canadian Academies (CCA), explores risk by focusing on the likelihood of commercial marine shipping accidents across Canada as well as the potential social, economic, and environmental impacts of such accidents.
Jérôme OLLIER

Ship Adrift off Canada After Fire - @Mar_ex - 0 views

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    Ship Adrift off Canada After Fire.
Sam Russell

30 Day Loans for Canada Obtain Money Easy and Fast For Your Financial Problems - 0 views

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Mike Phill

Payday Loans Canada- Intended To Terminate Fiscal Issues With No Delay - 0 views

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Jérôme OLLIER

Canada to Assess Shipping's Impact on Coastal Marine Ecosystems - @Mar_Ex - 0 views

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    Canada to Assess Shipping's Impact on Coastal Marine Ecosystems.
Jérôme OLLIER

Canada: sea ice prevents crucial supply deliveries to isolated communities - @guardianeco - 0 views

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    Canada: sea ice prevents crucial supply deliveries to isolated communities.
Jérôme OLLIER

Canada : une autre baleine franche victime d'une collision avec un navire - @AFP via @S... - 0 views

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    Canada : une autre baleine franche victime d'une collision avec un navire.
Jérôme OLLIER

Canada orders reduced ship speeds to prevent right whale deaths - @AFP via @physorg_com - 0 views

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    Canada orders reduced ship speeds to prevent right whale deaths.
Jérôme OLLIER

Canada fines three vessels for violation of speed limit - @safety4sea - 0 views

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    Canada fines three vessels for violation of speed limit.
emilyemrate

Trump Signs New Trade Deal With Canada and Mexico After Bitter Negotiations - 0 views

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    BUENOS AIRES - President Trump and his Mexican and Canadian counterparts sought to put the acrimony of the past two years behind them on Friday as they signed a new trade agreement governing hundreds of billions of dollars in commerce that underpins their mutually dependent economies. Meeting for the first time since the revised North…
Jérôme OLLIER

Canada's tiny Arctic port faces uncertain future - Reuters - 0 views

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    Canada's tiny Arctic port faces uncertain future.
Jérôme OLLIER

Cargo ship from Nunavik mine to travel Northwest Passage - CBC News - 0 views

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    Cargo ship from Nunavik mine to travel Northwest Passage.
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