Northwest Passage Trail
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Recent North Magnetic Pole Acceleration Towards Siberia Caused by flux Lobe Elongation
Recent north magnetic pole acceleration towards Siberia caused by flux lobe elongation Philip W. Livermore,1∗, Christopher C. Finlay 2, Matthew Bayliff 1 1School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK, 2DTU Space, Technical University of Denmark, 2800 Kgs. Lyngby, Copenhagen, Denmark ∗To whom correspondence should be addressed; E-mail: [email protected]. Abstract The wandering of Earth’s north magnetic pole, the location where the magnetic field points vertically downwards, has long been a topic of scien- tific fascination. Since the first in-situ measurements in 1831 of its location in the Canadian arctic, the pole has drifted inexorably towards Siberia, ac- celerating between 1990 and 2005 from its historic speed of 0-15 km/yr to its present speed of 50-60 km/yr. In late October 2017 the north magnetic pole crossed the international date line, passing within 390 km of the geo- graphic pole, and is now moving southwards. Here we show that over the last two decades the position of the north magnetic pole has been largely determined by two large-scale lobes of negative magnetic flux on the core- mantle-boundary under Canada and Siberia. Localised modelling shows that elongation of the Canadian lobe, likely caused by an alteration in the pattern of core-flow between 1970 and 1999, significantly weakened its signature on Earth’s surface causing the pole to accelerate towards Siberia. A range of simple models that capture this process indicate that over the next decade arXiv:2010.11033v1 [physics.geo-ph] 21 Oct 2020 the north magnetic pole will continue on its current trajectory travelling a further 390-660 km towards Siberia. -
Map and Compass
UE CG 039-089 2018_UE CG 039-089 2018 2018-08-29 9:57 AM Page 56 MAP The north magnetic pole is not the same as the geographic North Pole, also known as AND COMPASS true north, which is the northern end of the axis around which the earth spins. In fact, the north magnetic pole currently lies Background Information approximately 800 mi (1300 km) south of the geographic North Pole, in northern A compass is an instrument that people use Canada. And because the north magnetic to find a direction in relation to the earth as pole migrates at 6.6 mi (10 km) per year, its a whole. The magnetic needle in the location is constantly changing. compass, which is the freely moving needle in the compass that has a red end, points The meridians of longitude on maps and north. More specifically, this needle points globes are based upon the geographic to the north magnetic pole, the northern North Pole rather than the north magnetic end of the earth’s magnetic field, which pole. This means that magnetic north, the can be imagined as lines of magnetism that direction that a compass indicates as north, leave the south magnetic pole, flow north is not the same direction as maps indicate around the earth, and then enter the north for north. Magnetic declination, the magnetic pole. difference in the angle between magnetic north and true north must, therefore, be Any magnetized object, an object with two taken into account when navigating with a oppositely charged ends, such as a magnet map and a compass. -
Polar “Wandering” Curves
POLAR “WANDERING” CURVES We have learned that rock samples containing magnetic minerals (commonly magnetite) provide information (direction and inclination) on where they were formed relative to the north magnetic pole. Turning this around – if we collect recent volcanic rocks from different places around the world, measurement of their magnetic direction and inclination will converge on the present magnetic north pole. POLE POSITION ~ 900 - INCLINATION Does this happen with ancient rocks? If we measure their magnetic inclination and direction, we might expect that rocks of the same age on different continents would give identical polar positions, which should correspond with the present polar position. Rocks of different ages give different polar positions Rocks of the same age but on different continents give different polar positions The older the rock the further the calculated polar position is from the present position Not here as expected! EXAMPLE Permian ~ 245-286 million years Examples of so-called “Polar Wandering Curves” Plotting the apparent polar positions for rocks of different ages from North America and Eurasia produces two curves, the so-called “polar wandering curves”. Note that as the curves get younger they converge. Fitting the continents back together results in a single curve. Nonetheless, the positions still do not correspond with the current magnetic position. To account for this, the continents would have had to move northwards as well. Explanation of “Polar Wandering Curves” 300 million years ago Today Sideways -
Contracting & Procurement Activity Report
CONTRACTING & PROCUREMENT ACTIVITY REPORT FOR THE YEAR ENDED MARCH 31, 2020 TABLE OF CONTENTS Overview ......................................................................................................................................... 1 Summary Section A – Major Construction Contracts ..................................................................... 2 Summary Section B – Operations and Maintenance Expenditures ................................................ 3 Section A – Major Construction Contracts – Detailed List............................................................ 10 Section B – Operations and Maintenance Contracts – Detailed List ............................................ 11 Professional Services ..................................................................................................................... 12 Air Charters ................................................................................................................................... 14 Maintenance ................................................................................................................................. 15 Goods ............................................................................................................................................ 17 Leases - Public and Staff Housing 2019 - 2020 ............................................................................. 19 CONTRACTING REPORT: 2019-2020 OVERVIEW PURPOSE The purpose of this report is to support the integrity and transparency in Government Contracting -
Transits of the Northwest Passage to End of the 2020 Navigation Season Atlantic Ocean ↔ Arctic Ocean ↔ Pacific Ocean
TRANSITS OF THE NORTHWEST PASSAGE TO END OF THE 2020 NAVIGATION SEASON ATLANTIC OCEAN ↔ ARCTIC OCEAN ↔ PACIFIC OCEAN R. K. Headland and colleagues 7 April 2021 Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge, United Kingdom, CB2 1ER. <[email protected]> The earliest traverse of the Northwest Passage was completed in 1853 starting in the Pacific Ocean to reach the Atlantic Oceam, but used sledges over the sea ice of the central part of Parry Channel. Subsequently the following 319 complete maritime transits of the Northwest Passage have been made to the end of the 2020 navigation season, before winter began and the passage froze. These transits proceed to or from the Atlantic Ocean (Labrador Sea) in or out of the eastern approaches to the Canadian Arctic archipelago (Lancaster Sound or Foxe Basin) then the western approaches (McClure Strait or Amundsen Gulf), across the Beaufort Sea and Chukchi Sea of the Arctic Ocean, through the Bering Strait, from or to the Bering Sea of the Pacific Ocean. The Arctic Circle is crossed near the beginning and the end of all transits except those to or from the central or northern coast of west Greenland. The routes and directions are indicated. Details of submarine transits are not included because only two have been reported (1960 USS Sea Dragon, Capt. George Peabody Steele, westbound on route 1 and 1962 USS Skate, Capt. Joseph Lawrence Skoog, eastbound on route 1). Seven routes have been used for transits of the Northwest Passage with some minor variations (for example through Pond Inlet and Navy Board Inlet) and two composite courses in summers when ice was minimal (marked ‘cp’). -
Canada's Sovereignty Over the Northwest Passage
Michigan Journal of International Law Volume 10 Issue 2 1989 Canada's Sovereignty Over the Northwest Passage Donat Pharand University of Ottawa Follow this and additional works at: https://repository.law.umich.edu/mjil Part of the International Law Commons, and the Law of the Sea Commons Recommended Citation Donat Pharand, Canada's Sovereignty Over the Northwest Passage, 10 MICH. J. INT'L L. 653 (1989). Available at: https://repository.law.umich.edu/mjil/vol10/iss2/10 This Article is brought to you for free and open access by the Michigan Journal of International Law at University of Michigan Law School Scholarship Repository. It has been accepted for inclusion in Michigan Journal of International Law by an authorized editor of University of Michigan Law School Scholarship Repository. For more information, please contact [email protected]. CANADA'S SOVEREIGNTY OVER THE NORTHWEST PASSAGE Donat Pharand* In 1968, when this writer published "Innocent Passage in the Arc- tic,"' Canada had yet to assert its sovereignty over the Northwest Pas- sage. It has since done so by establishing, in 1985, straight baselines around the whole of its Arctic Archipelago. In August of that year, the U. S. Coast Guard vessel PolarSea made a transit of the North- west Passage on its voyage from Thule, Greenland, to the Chukchi Sea (see Route 1 on Figure 1). Having been notified of the impending transit, Canada informed the United States that it considered all the waters of the Canadian Arctic Archipelago as historic internal waters and that a request for authorization to transit the Northwest Passage would be necessary. -
Integrated Fisheries Management Plan for Narwhal in the Nunavut Settlement Area
Integrated Fisheries Management Plan for Narwhal in the Nunavut Settlement Area Hunter & Trapper Organizations Consultations March 2012 Discussion Topics • Why changes are needed to narwhal co-management • Overview of the draft Narwhal Management Plan • Marine Mammal Tag Transfer Policy Development • HTO & hunter roles and responsibilities under the revised management system Why do we need changes to the Narwhal Management System? Increased national and international interest in how the narwhal fishery in Nunavut is managed. Strengthen narwhal co-management consistent with; • NLCA wildlife harvesting and management provisions such as • Establishing Total Allowable Harvest (TAH), Basic Needs Level (BNL) • Increased roles for Regional Wildlife Organizations (RWOs) and Hunters and Trappers Organizations (HTOs) • Available scientific and Inuit knowledge • Sustainable harvesting • International trade requirements Why do we need changes to the Narwhal Management System? International Exports • Must conform to the Convention on International Trade in Endangered Species (CITES) • Canadian CITES Export Permits require a Non-Detriment Finding (NDF) • In 2010 and 2011, exports of narwhal products from some areas were not allowed • CITES Parties will meet in spring 2013, and may request a review of narwhal trade • If trade is deemed harmful to the survival of the species, trade restrictions or bans could be imposed. • Important that the Narwhal Management Plan is approved and implemented by January 2013 Importance of Improving the Narwhal Management System • Improvements to the narwhal management system will assist • Co-management organizations to clearly demonstrate that narwhal harvesting is sustainable • Continued sustainable harvest for future generations of Inuit • Continued trade/export of narwhal tusks and products from Canada • A formal Management Plan will outline the management objectives for narwhal and the measures to achieve sustainable harvesting. -
Magnetic North Pole Shifting at 50Km a Year
International Union of Marine Insurance Magnetic North Pole shifting at 50km a year 14th January 2019 For unknown reasons the shift in the Magnetic North Pole has accelerated rapidly in the past 40 years, potentially causing problems for navigation for vessels within the Arctic Circle, just as the northern route is opening up to commercial traffic, Reuters reported at the weekend. Compass needles point towards the north magnetic pole, which has been moving at an unpredictable rate from the coast of northern Canada a century ago to the middle of the Arctic Ocean, heading in the direction of Russia. Ciaran Beggan, of the British Geological Survey in Edinburgh, UK, told Reuters last week that it was “moving at about 50 km (30 miles) a year. It didn’t move much between 1900 and 1980 but it’s really accelerated in the past 40 years,” The rapid shift has forced researchers to update early a model that helps navigation by ships, planes and submarines in the Arctic. A five-year update of the World Magnetic Model was due in 2020, but the US military has requested an unprecedented early review, he said. The BGS runs the model in association with the US National Oceanic and Atmospheric Administration (NOAA) Beggan said that the moving pole affected navigation, particularly in the Arctic Ocean north of Canada. As well as civilian navigation, NATO, the US and UK militaries use the magnetic model. An update will be released on January 30th, delayed from January 15th because of the current shutdown of the US government. Beggan said the recent shifts in the north magnetic pole would be unnoticed by most people outside the Arctic. -
The Final Days of the Franklin Expedition: New Skeletal Evidence ANNE KEENLEYSIDE,1 MARGARET BERTULLI2 and HENRY C
ARCTIC VOL. 50, NO. 1 (MARCH 1997) P. 36–46 The Final Days of the Franklin Expedition: New Skeletal Evidence ANNE KEENLEYSIDE,1 MARGARET BERTULLI2 and HENRY C. FRICKE3 (Received 19 June 1996; accepted in revised form 21 October 1996) ABSTRACT. In 1992, a previously unrecorded site of Sir John Franklin’s last expedition (1845–1848) was discovered on King William Island in the central Canadian Arctic. Artifacts recovered from the site included iron and copper nails, glass, a clay pipe fragment, pieces of fabric and shoe leather, buttons, and a scatter of wood fragments, possibly representing the remains of a lifeboat or sledge. Nearly 400 human bones and bone fragments, representing a minimum of 11 men, were also found at the site. A combination of artifactual and oxygen isotope evidence indicated a European origin for at least two of these individuals. Skeletal pathology included periostitis, osteoarthritis, dental caries, abscesses, antemortem tooth loss, and periodontal disease. Mass spectroscopy and x-ray fluorescence revealed elevated lead levels consistent with previous measurements, further supporting the conclusion that lead poisoning contributed to the demise of the expedition. Cut marks on approximately one-quarter of the remains support 19th-century Inuit accounts of cannibalism among Franklin’s crew. Key words: Franklin Expedition, skeletal remains, oxygen isotope analysis, lead poisoning, cannibalism RÉSUMÉ. En 1992, on a découvert un site non mentionné auparavant, relié à la dernière expédition de sir John Franklin (1845- 1848) dans l’île du Roi-Guillaume, située au centre de l’océan Arctique canadien. Les artefacts récupérés sur ce site comprenaient des clous en fer et en cuivre, du verre, un fragment de pipe en terre, des morceaux de tissu et de cuir de chaussure, des boutons et de multiples fragments de bois éparpillés, qui pourraient venir d’un canot de sauvetage ou d’un traîneau. -
Gjoa Haven © Nunavut Tourism
NUNAVUT COASTAL RESOURCE INVENTORY ᐊᕙᑎᓕᕆᔨᒃᑯᑦ Department of Environment Avatiliqiyikkut Ministère de l’Environnement Gjoa Haven © Nunavut Tourism ᐊᕙᑎᓕᕆᔨᒃᑯᑦ Department of Environment Avatiliqiyikkut NUNAVUT COASTAL RESOURCE INVENTORY • Gjoa Haven INVENTORY RESOURCE COASTAL NUNAVUT Ministère de l’Environnement Nunavut Coastal Resource Inventory – Gjoa Haven 2011 Department of Environment Fisheries and Sealing Division Box 1000 Station 1310 Iqaluit, Nunavut, X0A 0H0 GJOA HAVEN Inventory deliverables include: EXECUTIVE SUMMARY • A final report summarizing all of the activities This report is derived from the Hamlet of Gjoa Haven undertaken as part of this project; and represents one component of the Nunavut Coastal Resource Inventory (NCRI). “Coastal inventory”, as used • Provision of the coastal resource inventory in a GIS here, refers to the collection of information on coastal database; resources and activities gained from community interviews, research, reports, maps, and other resources. This data is • Large-format resource inventory maps for the Hamlet presented in a series of maps. of Gjoa Haven, Nunavut; and Coastal resource inventories have been conducted in • Key recommendations on both the use of this study as many jurisdictions throughout Canada, notably along the well as future initiatives. Atlantic and Pacific coasts. These inventories have been used as a means of gathering reliable information on During the course of this project, Gjoa Haven was visited on coastal resources to facilitate their strategic assessment, two occasions: -
Native Contributions to Arctic Science at Barrow, Alaska
ARCTIC VOL. 50, NO. 3 (SEPTEMBER 1997) P. 277–288 InfoNorth Native Contributions to Arctic Science at Barrow, Alaska By Karen Brewster INTRODUCTION N August 1997, the Naval Arctic Research Laboratory (NARL) in Barrow, Alaska celebrated its 50th anniver- Isary. The Lab, originally called the Arctic Research Laboratory (ARL) but renamed in 1967, is renowned for its accomplishments and contributions to the scientific under- standing of the Arctic. Amidst the glory, however, there is little mention of the Iñupiat (North Alaskan Eskimo) role in this scientific program. Local residents’ knowledge of the arctic environment contributed to the success of both individual scientists and the facility overall. Without Native assistance, The Naval Arctic Research Laboratory, Barrow, Alaska, circa 1950s. James much of the work at NARL could not have been accom- Ahyakak Collection, North Slope Borough, Iñupiat History, Language and plished. These men and women deserve to be recognized. Culture Commission, Barrow, Alaska. Few people are aware of the Iñupiat who worked on scientific projects at NARL. I believe the scientific commu- nity has been negligent in not making this better known. Barrow is located at the northernmost point in Alaska Therefore, I will discuss in general Iñupiat assistance to arctic along the Arctic Ocean. The Iñupiat lifestyle in the 1940s, like science from the 1940s to the present, and describe a few that of their ancestors, was dominated by whaling, hunting, specific cases. More Iñupiat worked at NARL than will be fishing, and trapping. It was still a harsh life with few mentioned here, and they deserve equal recognition. Many amenities. -
April 11, 2019 PROPONENT: Mayor Hamlet of Naujaat Box 10 Naujaat
April 11, 2019 PROPONENT: Mayor Hamlet of Naujaat Box 10 Naujaat Nunavut X0C 0H0 [email protected] Dear Mr. Mayor: RE: NPC File # 148988 [Naujaat Community Access Trail] On January 14, 2019, Nunavut Planning Commission (NPC) issued a positive conformity determination for the above noted project proposal from the Hamlet of Naujaat and forwarded the proposal to the Nunavut Impact Review Board (NIRB) for screening. On April 9, 2019, the NPC received a notice of inclusion to scope from the NIRB identifying “additional works or activities as being sufficiently related to the project to form part of it” and requesting “further direction from the Commission regarding whether the proposed project and updated scope of activities is in conformity with any applicable land use plans for the area.” In order for the NPC to provide such direction, you will need to submit a proposal through the NPC’s online application system (http://lupit.nunavut.ca/portal) to amend file 148988 outlining the additional scope of activities. The previously reviewed project proposal may be found at this website: http://lupit.nunavut.ca/portal/project-dashboard.php?appid=148988&sessionid= If you have any questions, please do not hesitate to contact me at (867) 857-2242. Sincerely, Peter Scholz Senior Planner, Nunavut Planning Commission ttcsyFz 2101 P.O. Box 2101 P.O. Box 2101 wcl4]gtx6, kNK5 X0B 0C0 Cambridge Bay, NU X0B 0C0 Ikaluktutiak, NU X0B 0C0 sc]ltz 867-983-4625 867-983-4625 867-983-4625 h4vJ4f5 867-983-4626 867-983-4626 867-983-4626 cc. NIRB - Nunavut Impact Review Board Natasha Lear Manager, Technical Administration P.O.