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Ice Monitoring in Deception Bay : Progress report 2016-2018

Ice Monitoring in Deception Bay : Progress report 2016-2018

CT-scans The CT-scan measures density throughout the volume of the scanned material. Frozen water has a different density than liquid salt-water (brine) or air. Brine loss is expected as soon as the ice core is removed from the temperature gradient of the ice cover and transported south. The brine drainage channels, even emptied or a little transformed, should still be visible on the CT- scan, as well as any air bubbles within the ice. In Deception Bay, cores were taken above the SWIP (underwater sonar) for CT-scanning in both January 2017 and April 2017. Figure 42 shows a 2D picture of the complete 3D scans of both ice cores, in a color representation of density adapted for ice. Frozen water appears transparent and air is bright blue, highlighting inclusions. The salinity profiles for the same locations are also reproduced. Arrows along the length of the scans identify at which depth salinity measurements were done. Color bars along the length of the scans outline sections of dense air bubbles in green and brine channels in red.
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Assessing reasons for changes in the condition of Deception Bay Arctic charr (Salvelinus alpinus).

Assessing reasons for changes in the condition of Deception Bay Arctic charr (Salvelinus alpinus).

standards (IAEA-CH 3 + CH 6 ) cross calibrated to International Atomic Energy Agency (IAEA) standards: CH 6 for δ 13 C. Figure 9. Length standardized logTHg (mg/kg) significantly increased (p=0.0344) with rising δ 13 C values in Arctic charr muscle tissue collected from Deception Bay during August 2016.

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Combining TerraSAR-X and time-lapse photography for seasonal sea ice monitoring: the case of Deception Bay, Nunavik.

Combining TerraSAR-X and time-lapse photography for seasonal sea ice monitoring: the case of Deception Bay, Nunavik.

Revised: 30 March 2020 – Accepted: 23 April 2020 – Published: 26 May 2020 Abstract. This article presents a case study for the combined use of TerraSAR-X and time-lapse photography time series in order to monitor seasonal sea ice processes in Nunavik’s Deception Bay. This area is at the confluence of land use by local Inuit, ice-breaking transport by the mining indus- try, and climate change. Indeed, Inuit have reported greater interannual variability in seasonal sea ice conditions, includ- ing later freeze-up and earlier breakup. Time series covering 2015 to 2018 were acquired for each data source: TerraSAR- X images were acquired every 11 d, and photographs were acquired hourly during the day. We used the combination of the two time series to document spatiotemporal aspects of freeze-up and breakup processes. We also report new X-band backscattering values over newly formed sea ice types. The TerraSAR-X time series further show potential for melt and pond onset.
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Sea ice monitoring services at Deception Bay, Salluit and Kangiqsujuaq: Final progress report 2019-2020.

Sea ice monitoring services at Deception Bay, Salluit and Kangiqsujuaq: Final progress report 2019-2020.

5.3.3. Analysis of sonar data (2015-2019) As fully described in previous reports, we have installed two underwater sonars to measure continuous ice thickness in Deception Bay. The shallow water ice profiler (SWIP) was installed in 2015 near Moosehead Island and the ice profiling sonar (IPS) was installed in 2016 in the area were the icebreakers manoeuver to turn around when approaching and exiting the docks. We retrieve the instruments every year for maintenance and data transfer and then put them back into the water.

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Sea ice monitoring services at Deception Bay, Salluit and Kangiqsujuaq: Progress report 2018-2019

Sea ice monitoring services at Deception Bay, Salluit and Kangiqsujuaq: Progress report 2018-2019

5.4. Data analysis Analysis of time-lapse photos for freeze-up and breakup processes The dates presented here are determined through interpretation of the photos from the Panasonic camera near the port facilities. It is not always clear when ice is moving or not and when water leads are frozen or not. Therefore, there may be some uncertainties when determining the exact freeze-up and breakup dates and interpretation may differ slightly from one interpreter to the other. It nonetheless gives a good qualitative portrait of the ice cycles in Deception Bay.
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Ice monitoring of Deception Bay: Deliverable no.1 to no. 4

Ice monitoring of Deception Bay: Deliverable no.1 to no. 4

The ice reaches its maximum thickness of about 1.7 to 2 m around late May. In June, melting of the ice can first be seen by puddles forming over the ice cover, and then by open areas where the Deception River and other rivers discharge freshwater into the bay. Before June ends, the ice-free area extends from the head to the middle of Deception Bay around Pointe Théron. Where the pack ice remains, it is too thin to safely travel over it. In late June, or early July at the latest, southeasterly winds may completely free the bay of ice in a single day, while winds in the opposite direction can push floes into the bay. As with ice formation, global warming seems to be changing the break-up period, which recently tends to occur earlier (Don Cameron, Nuvumiut Developments Inc., pers. comm., 2007).
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DIC dynamics in the Bay  of Palma (NW Mediterranean)

DIC dynamics in the Bay of Palma (NW Mediterranean)

9 Abstract: The Bay of Palma was sampled for Dissolved Inorganic Carbon (DIC) variables during 11 surveys in March 2002 (EUBAL I) and June 2002 (EUBAL II) in the framework of the EU project EUROTROPH. In June 2002, DIC values were systematically lower over the Posidonia oceanica meadow. The difference of DIC between the Posidonia meadow and the rest of the Bay of Palma, allowed the computation of the Net Ecosystem Production (NEP). The short-term variability of NEP was related to light availability. This allowed to integrate NEP for the sampling period based on continuous light measurements and the integrated value is in fair agreement with the estimates based on concomitant pelagic and benthic O 2
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Étude des retombées économiques d’une mine : cas de Voisey’s Bay et du Nunatsiavut

Étude des retombées économiques d’une mine : cas de Voisey’s Bay et du Nunatsiavut

INTRODUCTION Le développement industriel est basé sur l'exploitation des ressources naturelles à cause du rôle majeur qu'occupent ces dernières dans la fabrication des produits finis ou semi-finis pour les secteurs-clés de l'économie. La production de différents articles tels que les téléphones portables, les pièces d'avions, le matériel de construction, etc. est tributaire de ces ressources. La région du Nunatsiavut regorge d'énormes stocks de ressources naturelles par exemple le nickel, qui fait objet d’un développement entrepris par la firme Voisey's Bay Nickel Company (VBNC). Cette firme envisage d'exploiter 32 millions de tonnes de nickel dans un site à ciel ouvert et plus de 118 millions de tonnes de nickel dans un site souterrain dans la province de Terre-Neuve et Labrador. L’exploitation de ce gisement minier fut initialement prévue pour une durée de 12 ans, mais pourrait se prolonger selon les disponibilités de la ressource après les recherches souterraines. Selon le Rapport publié par l'Association des Inuits du Labrador en 1996, VBNC a obtenu un certificat d'exploration depuis janvier 1996 du gouvernement de Terre-Neuve et Labrador. Le développement de la mine devait se faire moyennant un accord conclu entre le gouvernement, la VBNC et l'Association des Inuits du Labrador (Labrador Inuit Association) afin de considérer les exigences du peuple inuit qui dispose des droits ancestraux sur le territoire. Le compromis trouvé était d'inclure leurs revendications dans les ententes sur les répercussions et les avantages qui découleraient des activités d'exploration et éventuellement de développement de la mine de Voisey's Bay. Selon les points de vue des représentants du peuple Inuit, les éléments importants qui faisaient partie des revendications pouvaient se regrouper dans sept catégories : droit de propriété, contrôle de la terre et des ressources, informations et communications, protection et impacts environnementaux, impacts sur la culture Inuit, emploi et formation, services sociaux, santé et sécurité, compensation, redevances et autres bénéfices.
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Dissolved inorganic carbon dynamics in the Bay of Biscay

Dissolved inorganic carbon dynamics in the Bay of Biscay

Figure 1: Coccolithophorid Emiliania huxleyi. Figure 2: The study area: Bay of Biscay. Arrows indicate the general current pattern. Figure 3: Composite satellite image of May 2007 (provided by Steve Groom, Remote Sensing Group, Plymouth Marine Laboratory, Plymouth, UK), where the high reflectance patch indicates the decline of the coccolithophorid bloom. Results & discussion

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Postglacial paleoceanography of central Baffin Bay from palynological tracers

Postglacial paleoceanography of central Baffin Bay from palynological tracers

Dinoflagellate cyst assemblages as tracers of sea-surface conditions in the northern North Atlantic, Arctic and sub-Arctic seas: the new 'n=677' database and its application f[r]

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Notes on Proposed D.E.D. Heating Trials at Resolute Bay

Notes on Proposed D.E.D. Heating Trials at Resolute Bay

L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB. NRC Publicat[r]

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Detailed detection of active layer freeze-thaw dynamics using quasi-continuous electrical resistivity tomography (Deception Island, Antarctica)

Detailed detection of active layer freeze-thaw dynamics using quasi-continuous electrical resistivity tomography (Deception Island, Antarctica)

We installed and tested an autonomous and continuously measuring ERT monitoring system in the vicinity of shal- low boreholes at the Crater Lake CALM-S site, Deception Island, with the objective of evaluating its potential in a re- mote area without maintenance for a full year. The Crater Lake CALM-S site is typical for conditions found in Antarc- tica, where year-round stations are scarce, and most research stations are only operated in summer. Data were collected to monitor subsurface freezing and thawing processes on a daily and seasonal basis and to detect seasonal trends as well as the impact of short-lived extreme meteorological events. Short-lived meteorological events are rarely addressed in per- mafrost studies, but they reflect the impact of fast-changing meteorological conditions on the upper soil horizons. In the context of climate change, with increasing frequency of at- mospheric extreme events, these events may also become more frequent. Being able to identify them in the ERT se- ries allows for a better characterization of the links between soil thermal regimes and geomorphic dynamics.
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The prefix be-/bi- as a marker of verbs of deception in late Old and early Middle English

The prefix be-/bi- as a marker of verbs of deception in late Old and early Middle English

How can this kind of semantic extension be accounted for? Rather than being an instance of metaphor, in this case the sense of deception and that of deprivation are probably related to each other through conceptual association, in turn a result of their frequent co-occurrence. In the context of mediaeval literature, this is not surprising, as it is frequently concerned with the taking of lives and kingdoms of saints, noblemen and kings, which, if not of open battle, is often the result of treachery. Consider in that respect (22), which illustrates the conceptual contiguity of deception (‘darkly misled’) and bereavement (‘despoiled of joy’, presumably as the result of being darkly misled), and also (24), where a different reading of ber ǣ dan as ‘deprive so. [of his life]’ is evoked by the co-ordinated clause & hine acwellan.
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A chapel in Back Bay : heaviness and lightness

A chapel in Back Bay : heaviness and lightness

At this point the visitors can make their decision to enter the reading area by following the extending platform into the building, walk down the stairs which lead through the court[r]

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Documenting ice in the Bay of Fundy Canada

Documenting ice in the Bay of Fundy Canada

Once ice-tolerant tidal current harvesting devices are developed, they may be deployable in other jurisdictions with energetic tidal flows which experience more severe conditions of sea ice than the headwaters of the Bay of Fundy. In North America, these locations might include Northumberland Strait (between Prince Edward Island and New Brunswick), the Gulf of St. Lawrence (Quebec), the Strait of Belle Isle (Newfoundland and Labrador), Cook Inlet (Alaska), and Ungava Bay (Quebec).

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APT Project "NAIREC" at Frobisher Bay, N.W.T., September 1964

APT Project "NAIREC" at Frobisher Bay, N.W.T., September 1964

L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB. Report (Nati[r]

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Proposed Construction for Eskimo Settlement at Frobisher Bay, N.W.T.

Proposed Construction for Eskimo Settlement at Frobisher Bay, N.W.T.

L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB. NRC Publicat[r]

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Assembled independent development zones : a prototype for Boston's Back Bay

Assembled independent development zones : a prototype for Boston's Back Bay

The Introduction of the thesis stated several issues that were to be addressed by the design exploration and its "alternate approach." These were continuity, co[r]

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An artists' community in the Back Bay : continuity and change

An artists' community in the Back Bay : continuity and change

The connection between form and space works to define a synthetic understanding of the numerous variables that together express the sense of place within a given c[r]

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Late spring bloom development of pelagic diatoms in Baffin Bay

Late spring bloom development of pelagic diatoms in Baffin Bay

sis spp./Fossula arctica) was observed, mostly in western areas still covered by sea ice and/or more influenced by Pacific waters flowing down from the northern part of the Baffin Bay. This assemblage was associated with much less productive waters, with low biomass. It contributed on average only 3% of total POC, implying that other phy- toplankton groups were dominating the bloom in these areas. Some extremely high abundances of Phaeocystis spp. were found to co-occur with this diatom assemblage at certain locations. Yet despite lower total Si produc- tion, this assemblage presented slightly higher specific Si uptake rates at stations located under the ice pack, prob- ably reflecting early stages of the bloom not yet experi- encing nutrient limitation.
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