The Northwest Passage is, from the European and northern Atlantic point of view, the sea route to the Pacific Ocean through the Arctic Ocean, along the northern coast of North America via waterways through the Canadian Arctic Archipelago. The eastern route along the Arctic coasts of Norway and Siberia is accordingly called the Northeast Passage; the various islands of the archipelago are separated from one another and from the Canadian mainland by a series of Arctic waterways collectively known as the Northwest Passages or Northwestern Passages. For centuries, European explorers sought a navigable passage as a possible trade route to Asia. An ice-bound northern route was discovered in 1850 by the Irish explorer Robert McClure; until 2009, the Arctic pack ice prevented regular marine shipping throughout most of the year. Arctic sea ice decline has rendered the waterways more navigable for ice navigation; the contested sovereignty claims over the waters may complicate future shipping through the region: the Canadian government maintains that the Northwestern Passages are part of Canadian Internal Waters, but the United States and various European countries claim that they are an international strait and transit passage, allowing free and unencumbered passage.
If, as has been claimed, parts of the eastern end of the Passage are 15 metres deep, the route's viability as a Euro-Asian shipping route is reduced. A Chinese shipping line is planning regular voyages of cargo ships using the passage to the eastern United States and Europe, after a successful passage by Nordic Orion of 73,500 tonnes deadweight tonnage in September 2013. Loaded, Nordic Orion sat too deep in the water to sail through the Panama Canal. Before the Little Ice Age, Norwegian Vikings sailed as far north and west as Ellesmere Island, Skraeling Island and Ruin Island for hunting expeditions and trading with the Inuit and people of the Dorset culture who inhabited the region. Between the end of the 15th century and the 20th century, colonial powers from Europe dispatched explorers in an attempt to discover a commercial sea route north and west around North America; the Northwest Passage represented a new route to the established trading nations of Asia. England called the hypothetical northern route the "Northwest Passage".
The desire to establish such a route motivated much of the European exploration of both coasts of North America. When it became apparent that there was no route through the heart of the continent, attention turned to the possibility of a passage through northern waters. There was a lack of scientific knowledge about conditions. Explorers thought; the belief that a route lay to the far north persisted for several centuries and led to numerous expeditions into the Arctic. Many ended in disaster, including that by Sir John Franklin in 1845. While searching for him the McClure Arctic Expedition discovered the Northwest Passage in 1850. In 1906, the Norwegian explorer Roald Amundsen first completed a passage from Greenland to Alaska in the sloop Gjøa. Since that date, several fortified ships have made the journey. From east to west, the direction of most early exploration attempts, expeditions entered the passage from the Atlantic Ocean via the Davis Strait and through Baffin Bay. Five to seven routes have been taken through the Canadian Arctic Archipelago, via the McClure Strait, Dease Strait, the Prince of Wales Strait, but not all of them are suitable for larger ships.
From there ships passed through waterways through the Beaufort Sea, Chukchi Sea, Bering Strait, into the Pacific Ocean. In the 21st century, major changes to the ice pack due to climate change have stirred speculation that the passage may become clear enough of ice to permit safe commercial shipping for at least part of the year. On August 21, 2007, the Northwest Passage became open to ships without the need of an icebreaker. According to Nalan Koc of the Norwegian Polar Institute, this was the first time the Passage has been clear since they began keeping records in 1972; the Northwest Passage opened again on August 25, 2008. It is reported in mainstream medias that ocean thawing will open up the Northwest Passage for various kind of ships, making it possible to sail around the Arctic ice cap. and cutting thousands of miles off shipping routes. Warning that the NASA satellite images indicated the Arctic may have entered a "death spiral" caused by climate change, Professor Mark Serreze, a sea ice specialist at the U.
S. National Snow and Ice Data Center said: "The passages are open. It's a historic event. We are going to see this more and more as the years go by."On the other hand, some thick sections of ice will remain hard to melt in the shorter term. Such drifting and large chunks of ice in springtime, can be problematic as they can clog entire straits or damage a ship's hull. Cargo routes may therefore be slower and uncertain, depending on prevailing conditions and the ability to predict them; because a plurality of containerized traffic operates in a just-in-time mode and the relative isolation of the passage, the Northwest
Climate change occurs when changes in Earth's climate system result in new weather patterns that last for at least a few decades, maybe for millions of years. The climate system is comprised of five interacting parts, the atmosphere, cryosphere and lithosphere; the climate system receives nearly all of its energy from the sun, with a tiny amount from earth's interior. The climate system gives off energy to outer space; the balance of incoming and outgoing energy, the passage of the energy through the climate system, determines Earth's energy budget. When the incoming energy is greater than the outgoing energy, earth's energy budget is positive and the climate system is warming. If more energy goes out, the energy budget is negative and earth experiences cooling; as this energy moves through Earth's climate system, it creates Earth's weather and long-term averages of weather are called "climate". Changes in the long term average are called "climate change"; such changes can be the result of "internal variability", when natural processes inherent to the various parts of the climate system alter Earth's energy budget.
Examples include cyclical ocean patterns such as the well-known El Nino Southern Oscillation and less familiar Pacific decadal oscillation and Atlantic multidecadal oscillation. Climate change can result from "external forcing", when events outside of the climate system's five parts nonetheless produce changes within the system. Examples include changes in solar volcanism. Human activities can change earth's climate, are presently driving climate change through global warming. There is no general agreement in scientific, media or policy documents as to the precise term to be used to refer to anthropogenic forced change; the field of climatology incorporates many disparate fields of research. For ancient periods of climate change, researchers rely on evidence preserved in climate proxies, such as ice cores, ancient tree rings, geologic records of changes in sea level, glacial geology. Physical evidence of current climate change covers many independent lines of evidence, a few of which are temperature records, the disappearance of ice, extreme weather events.
The most general definition of climate change is a change in the statistical properties of the climate system when considered over long periods of time, regardless of cause. Accordingly, fluctuations over periods shorter than a few decades, such as El Niño, do not represent climate change; the term "climate change" is used to refer to anthropogenic climate change. Anthropogenic climate change is caused by human activity, as opposed to changes in climate that may have resulted as part of Earth's natural processes. In this sense in the context of environmental policy, the term climate change has become synonymous with anthropogenic global warming. Within scientific journals, global warming refers to surface temperature increases while climate change includes global warming and everything else that increasing greenhouse gas levels affect. A related term, "climatic change", was proposed by the World Meteorological Organization in 1966 to encompass all forms of climatic variability on time-scales longer than 10 years, but regardless of cause.
During the 1970s, the term climate change replaced climatic change to focus on anthropogenic causes, as it became clear that human activities had a potential to drastically alter the climate. Climate change was incorporated in the title of the Intergovernmental Panel on Climate Change and the UN Framework Convention on Climate Change. Climate change is now used as both a technical description of the process, as well as a noun used to describe the problem. Prior to the 18th century, scientists had not suspected that prehistoric climates were different from the modern period. By the late 18th century, geologists found evidence of a succession of geological ages with changes in climate. In the years since, a great deal of scientific progress has been made understanding the workings of the climate system. On the broadest scale, the rate at which energy is received from the Sun and the rate at which it is lost to space determine the equilibrium temperature and climate of Earth; this energy is distributed around the globe by winds, ocean currents, other mechanisms to affect the climates of different regions.
Factors that can shape climate are called climate forcings or "forcing mechanisms". These include processes such as variations in solar radiation, variations in the Earth's orbit, variations in the albedo or reflectivity of the continents and oceans, mountain-building and continental drift and changes in greenhouse gas concentrations. There are a variety of climate change feedbacks that can either amplify or diminish the initial forcing; some parts of the climate system, such as the oceans and ice caps, respond more in reaction to climate forcings, while others respond more quickly. There are key threshold factors which when exceeded can produce rapid change. Forcing mechanisms can be either "internal" or "external". Internal forcing mechanisms are natural processes within the climate system itself. External forcing mechanisms can be either natural. Whether the initial forcing mechanism is internal or external, the response of the climate system might be fast, slow (e.g. thermal exp
North American Numbering Plan
The North American Numbering Plan is a telephone numbering plan that encompasses twenty-five distinct regions in twenty countries in North America, including the Caribbean. Some North American countries, most notably Mexico, do not participate in the NANP; the NANP was devised in the 1940s by AT&T for the Bell System and independent telephone operators in North America to unify the diverse local numbering plans, established in the preceding decades. AT&T continued to administer the numbering plan until the breakup of the Bell System, when administration was delegated to the North American Numbering Plan Administration, a service, procured from the private sector by the Federal Communications Commission in the United States; each participating country forms a regulatory authority that has plenary control over local numbering resources. The FCC serves as the U. S. regulator. Canadian numbering decisions are made by the Canadian Numbering Administration Consortium; the NANP divides the territories of its members into numbering plan areas which are encoded numerically with a three-digit telephone number prefix called the area code.
Each telephone is assigned a seven-digit telephone number unique only within its respective plan area. The telephone number consists of a four-digit station number; the combination of an area code and the telephone number serves as a destination routing address in the public switched telephone network. For international call routing, the NANP has been assigned the international calling code 1 by the International Telecommunications Union; the North American Numbering Plan conforms with ITU Recommendation E.164, which establishes an international numbering framework. From its beginnings in 1876 and throughout the first part of the 20th century, the Bell System grew from local or regional telephone systems; these systems expanded by growing their subscriber bases, as well as increasing their service areas by implementing additional local exchanges that were interconnected with tie trunks. It was the responsibility of each local administration to design telephone numbering plans that accommodated the local requirements and growth.
As a result, the Bell System as a whole developed into an unorganized system of many differing local numbering systems. The diversity impeded the efficient operation and interconnection of exchanges into a nationwide system for long-distance telephone communication. By the 1940s, the Bell System set out to unify the various numbering plans in existence and developed the North American Numbering Plan as a unified, systematic approach to efficient long-distance service that did not require the involvement of switchboard operators; the new numbering plan was accepted in October 1947, dividing most of North America into eighty-six numbering plan areas. Each NPA was assigned a numbering plan area code abbreviated as area code; these codes were first used by long-distance operators to establish long-distance calls between toll offices. The first customer-dialed direct call using area codes was made on November 10, 1951, from Englewood, New Jersey, to Alameda, California. Direct distance dialing was subsequently introduced across the country.
By the early 1960s, most areas of the Bell System had been converted and DDD had become commonplace in cities and most larger towns. In the following decades, the system expanded to include all of the United States and its territories, Canada and seventeen nations of the Caribbean. By 1967, 129 area codes had been assigned. At the request of the British Colonial Office, the numbering plan was first expanded to Bermuda and the British West Indies because of their historic telecommunications administration through Canada as parts of the British Empire and their continued associations with Canada during the years of the telegraph and the All Red Line system. Not all North American countries participate in the NANP. Exceptions include Mexico, Saint Pierre and Miquelon, the Central American countries and some Caribbean countries; the only Spanish-speaking state in the system is the Dominican Republic. Mexican participation was planned, but implementation stopped after three area codes had been assigned, Mexico opted for an international numbering format, using country code 52.
The area codes in use were subsequently withdrawn in 1991. Area code 905 for Mexico City, was reassigned to a split of area code 416 in the Greater Toronto Area. Dutch-speaking Sint Maarten joined the NANP in September 2011, receiving area code 721; the NANP is administered by the North American Numbering Plan Administration. Today, this function is overseen by the Federal Communications Commission, which assumed the responsibility upon the breakup of the Bell System; the FCC solicits private sector contracts for the role of the administrator. The service was provided by a division of Lockheed Martin. In 1997, the contract was awarded to Neustar Inc.. In 2012, the contract was renewed until 2017. In 2015, the contract beginning 2017 was granted to Ericsson; the vision and goal of the architects of the North American Numbering Plan was a system by which telephone subscribers in the United States and Canada could themselves dial and establish a telephone call to any other subscriber wi
Russian Far East
The Russian Far East comprises the Russian part of the Far East, the eastermost territory of Russia, between Lake Baikal in Eastern Siberia and the Pacific Ocean. The Far Eastern Federal District shares land borders with Mongolia, the People's Republic of China and the Democratic People’s Republic of Korea to its south, shares maritime borders with Japan to its southeast and with the United States to its northeast. Although geographically part of Siberia, the Russian Far East is categorized separately from the Siberian Federal District to its west in Russian geographical schemes. In Russia, the region is referred to as just "Far East". What is known in English as the Far East is referred to as "the Asia-Pacific Region", or "East Asia". Beyenchime-Salaatin crater Klyuchevskaya Sopka volcano Kuril–Kamchatka Trench Lake Baikal Manchurian wapiti Siberian musk deer Amur leopard Amur tiger Asian black bear Brown bear Polar bear Picea obovata Pinus pumila Russia reached the Pacific coast in 1647 with the establishment of Okhotsk, consolidated its control over the Russian Far East in the 19th century, after the annexation of part of Chinese Manchuria.
Primorskaya Oblast was established as a separate administrative division of the Russian Empire in 1856, with its administrative center at Khabarovsk. Several entities with the name "Far East" had existed in the first half of the 20th century, all with rather different boundaries: 1920–1922: the Far Eastern Republic, which included Transbaikal, Amur and Kamchatka Oblasts and northern Sakhalin; until 2000, the Russian Far East lacked defined boundaries. A single term "Siberia and the Far East" was used to refer to Russia's regions east of the Urals without drawing a clear distinction between "Siberia" and "the Far East". In 2000, Russia's federal subjects were grouped into larger federal districts, the Far Eastern Federal District was created, comprising Amur Oblast, Chukotka Autonomous Okrug, Jewish Autonomous Oblast, Kamchatka Oblast with Koryak Autonomous Okrug, Khabarovsk Krai, Magadan Oblast, Primorsky Krai, the Sakha Republic, Sakhalin Oblast. In November 2018, Zabaykalsky Krai and the Republic of Buryatia were added being considered part of the Siberian Federal District.
Since 2000, the term "Far East" has been used in Russia to refer to the federal district, though it is also used more loosely. Defined by the boundaries of the federal district, the Far East has an area of 6.2 million square kilometres —over one-third of Russia's total area. Russia in the early 1900s persistently sought a warm water port on the Pacific Ocean for the navy as well as to facilitate maritime trade; the established Pacific seaport of Vladivostok was operational only during the summer season, but Port Arthur in Manchuria was operational all year. After the First Sino-Japanese War and the failure of the 1903 negotiations between Japan and the Tsars's government, Japan chose war to protect its domination of Korea and adjacent territories. Russia, saw war as a means of distracting its populace from government repression and of rallying patriotism in the aftermath of several general strikes. Japan issued a declaration of war on 8 February 1904. However, three hours before Japan's declaration of war was received by the Russian Government, the Imperial Japanese Navy attacked the Russian Far East Fleet at Port Arthur.
Eight days Russia declared war on Japan. The war ended in September 1905 with a Japanese victory following the fall of Port Arthur and the failed Russian invasion of Japan through the Korean Peninsula and Northeast China; the Treaty of Portsmouth was signed and both Japan and Russia agreed to evacuate Manchuria and return its sovereignty to China, but Japan was allowed to lease the Liaodong Peninsula, the Russian rail system in southern Manchuria with its access to strategic resources. Japan received the southern half of the Island of Sakhalin from Russia. Russia was forced to confiscate land from Korean settlers who formed the majority of Primorsky Krai's population due to a fear of an invasion of Korea and ousting of Japanese troops by Korean guerrillas. Between 1937 and 1939, the Soviet Union under Joseph Stalin deported over 200,000 Koreans to Uzbekistan and Kazakhstan, fearing that the Koreans might act as spies for Japan. Many Koreans died on the way in cattle trains due to illness, or freezing conditions.
Many community leaders were purged and executed, Koryo-saram were not allowed to travel outside of Central Asia for the next 15 years. Koreans were not allowed to use the Korean language and its use began to become lost with the involvement of Koryo-mar and the use of Russian. Development of numerous remote locations relied on GULAG labour camps during Stalin's rule in the region's northern half. After that, the large-scale use of forced labour waned and was superseded by volunteer employees attracted by high wages. During the Japanese invasion of Manchuria in 1931, the Soviets occupied Bolshoy Ussuriysky Island, Yinlong Island, several adjacent islets to separate the city of Khabarovsk from the territory controlled by a hostile power. Indeed, Japan turned its military interests to Soviet territories. Conflicts between the Jap
The United States of America known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U. S. is the third most populous country. The capital is Washington, D. C. and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico; the State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean; the U. S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The diverse geography and wildlife of the United States make it one of the world's 17 megadiverse countries.
Paleo-Indians migrated from Siberia to the North American mainland at least 12,000 years ago. European colonization began in the 16th century; the United States emerged from the thirteen British colonies established along the East Coast. Numerous disputes between Great Britain and the colonies following the French and Indian War led to the American Revolution, which began in 1775, the subsequent Declaration of Independence in 1776; the war ended in 1783 with the United States becoming the first country to gain independence from a European power. The current constitution was adopted in 1788, with the first ten amendments, collectively named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties; the United States embarked on a vigorous expansion across North America throughout the 19th century, acquiring new territories, displacing Native American tribes, admitting new states until it spanned the continent by 1848. During the second half of the 19th century, the Civil War led to the abolition of slavery.
By the end of the century, the United States had extended into the Pacific Ocean, its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and World War I confirmed the country's status as a global military power; the United States emerged from World War II as a global superpower, the first country to develop nuclear weapons, the only country to use them in warfare, a permanent member of the United Nations Security Council. Sweeping civil rights legislation, notably the Civil Rights Act of 1964, the Voting Rights Act of 1965 and the Fair Housing Act of 1968, outlawed discrimination based on race or color. During the Cold War, the United States and the Soviet Union competed in the Space Race, culminating with the 1969 U. S. Moon landing; the end of the Cold War and the collapse of the Soviet Union in 1991 left the United States as the world's sole superpower. The United States is the world's oldest surviving federation, it is a representative democracy.
The United States is a founding member of the United Nations, World Bank, International Monetary Fund, Organization of American States, other international organizations. The United States is a developed country, with the world's largest economy by nominal GDP and second-largest economy by PPP, accounting for a quarter of global GDP; the U. S. economy is post-industrial, characterized by the dominance of services and knowledge-based activities, although the manufacturing sector remains the second-largest in the world. The United States is the world's largest importer and the second largest exporter of goods, by value. Although its population is only 4.3% of the world total, the U. S. holds 31% of the total wealth in the world, the largest share of global wealth concentrated in a single country. Despite wide income and wealth disparities, the United States continues to rank high in measures of socioeconomic performance, including average wage, human development, per capita GDP, worker productivity.
The United States is the foremost military power in the world, making up a third of global military spending, is a leading political and scientific force internationally. In 1507, the German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere America in honor of the Italian explorer and cartographer Amerigo Vespucci; the first documentary evidence of the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan, Esq. to George Washington's aide-de-camp and Muster-Master General of the Continental Army, Lt. Col. Joseph Reed. Moylan expressed his wish to go "with full and ample powers from the United States of America to Spain" to seek assistance in the revolutionary war effort; the first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, Virginia, on April 6, 1776. The second draft of the Articles of Confederation, prepared by John Dickinson and completed by June 17, 1776, at the latest, declared "The name of this Confederation shall be the'United States of America'".
The final version of the Articles sent to the states for ratification in late 1777 contains the sentence "The Stile of this Confederacy shall be'The United States of America'". In June 1776, Thomas Jefferson wrote the phrase "UNITED STATES OF AMERICA" in all capitalized letters in the headline of his "original Rough draught" of the Declaration of Independence; this draft of the document did not surface unti
The Arctic Circle is one of the two polar circles and the most northerly of the five major circles of latitude as shown on maps of Earth. It marks the northernmost point at which the centre of the noon sun is just visible on the December solstice and the southernmost point at which the centre of the midnight sun is just visible on the June solstice; the region north of this circle is known as the Arctic, the zone just to the south is called the Northern Temperate Zone. As seen from the Arctic, the Sun is above the horizon for 24 continuous hours at least once per year and below the horizon for 24 continuous hours at least once per year; this is true in the Antarctic region, south of the equivalent Antarctic Circle. The position of the Arctic Circle is not fixed, its latitude depends on the Earth's axial tilt, which fluctuates within a margin of more than 2° over a 41,000-year period, due to tidal forces resulting from the orbit of the Moon. The Arctic Circle is drifting northwards at a speed of about 15 m per year.
The word arctic comes from the Greek word ἀρκτικός and that from the word ἄρκτος. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the centre of the sun can remain continuously above or below the horizon for twenty-four hours. Directly on the Arctic Circle these events occur, in principle once per year: at the June and December solstices, respectively. However, because of atmospheric refraction and mirages, because the sun appears as a disk and not a point, part of the midnight sun may be seen on the night of the northern summer solstice up to about 50 minutes south of the Arctic Circle; that is true at sea level. Only four million people live north of the Arctic Circle due to the climate. Tens of thousands of years ago, waves of people migrated from eastern Siberia across the Bering Strait into North America to settle; the largest communities north of the Arctic Circle are situated in Russia and Sweden: Murmansk, Tromsø, Kiruna. Rovaniemi in Finland is the largest settlement in the immediate vicinity of the Arctic Circle, lying 6 km south of the line.
In contrast, the largest North American community north of the Arctic Circle, has 5,000 inhabitants. Of the Arctic communities in Canada and the United States, Alaska is the largest settlement with about 4,000 inhabitants; the Arctic Circle is 16,000 km long. The area north of the Circle is about 20,000,000 km2 and covers 4% of Earth's surface; the Arctic Circle passes through the Arctic Ocean, the Scandinavian Peninsula, North Asia, Northern America, Greenland. The land within the Arctic Circle is divided among eight countries: Norway, Finland, the United States, Canada and Iceland; the climate inside the Arctic Circle is cold, but the coastal areas of Norway have a mild climate as a result of the Gulf Stream, which makes the ports of northern Norway and northwest Russia ice-free all year long. In the interior, summers can be quite warm, while winters are cold. For example, summer temperatures in Norilsk, Russia will sometimes reach as high as 30 °C, while the winter temperatures fall below −50 °C.
Starting at the prime meridian and heading eastwards, the Arctic Circle passes through: Terra Incognita: Exploration of the Canadian Arctic—Historical essay about early expeditions to the Canadian Arctic, illustrated with maps and drawings Temporal Epoch Calculations ©2006 by James Q. Jacobs Download: Epoch v2009.xls Useful constants" See: Obliquity of the ecliptic
Area code 907
Area code 907 covers the state of Alaska, except for the small southeastern community of Hyder, which uses area codes 236, 250 and 778 of neighboring Stewart, British Columbia. Despite having telephone service to the contiguous US via a terrestrial line from Juneau since 1937, Alaska was not included in the North American Numbering Plan until after the Alaska submarine cable was opened for traffic in 1956; the Alaska numbering plan area was assigned the area code 907, entered service in 1957. The Alaska numbering plan area is geographically the largest of any in the United States, it is the second-largest on the NANP and on the entire North American continent behind 867, which serves Canada's northern territories. Because the Aleutian Islands of Alaska cross longitude 180, the Anti-Meridian, 907 may be considered to be both the farthest west and the farthest east of all area codes in the NANP. Due to Alaska's low population, 907 is one of only 12 remaining area codes serving an entire state.
It is not projected to be exhausted until 2029. Many calls within Alaska are long-distance calls and must be dialed with the leading 1-907, except for cellphone services. Local calls and cellphone calls for long-distance service within Alaska, only require seven-digit dialing. At the time of its creation, area code 907 was one of the two longest area codes to dial on a rotary phone, taking 26 pulses to dial out in an era before the first touch tone phones; this is the same number of pulses as Hawaii's area code 808, introduced the same year. List of NANP area codes NANPA Area Code Map of Alaska List of exchanges from AreaCodeDownload.com, 907 Area Code