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Glacier Bay Basin in southeastern Alaska, in the United States, encompasses the Glacier Bay and surrounding mountains and glaciers, which was first proclaimed a U.S. National Monument on February 25, 1925, and which was later, on December 2, 1980, enlarged and designated as the Glacier Bay National Park and Preserve under the Alaska National Interest Lands Conservation Act, covering an area of 3,283,000 acres (1,329,000 ha). In 1986, UNESCO declared an area of 57,000 acres (23,000 ha) within a World Biosphere Reserve. This is the largest UNESCO protected biosphere in the world. In 1992, UNESCO included this area as a part of a World Heritage site, extending over an area of 24,300,000-acre (98,000 km2) which also included the Wrangell-St. Elias National Park, Kluane National Park (Canada) and Tatshenshini-Alsek Park (Canada). Part of the National Park is also designated a Wilderness area covering 2,658,000 acres (1,076,000 ha).〔(【引用サイトリンク】title= Fauna & Flora of Glacier Bay National Park ) 〕〔(【引用サイトリンク】title=Glacier Bay National Park and Preserve )〕〔(【引用サイトリンク】title= Glacier Bay National Park & Preserve )〕 Glacier Bay, the body of water, covers an area 1,375 square miles (3,560 km2) of glaciers and accounts for 27% of the Park area. It was a large single glacier of solid ice till early 18th century. It started retreating and evolved over the centuries into the largest protected water area park in the world. Glacier Bay, on the Gulf of Alaska, was known as the Grand Pacific Glacier about 4,000 feet (1,200 m) thick and about 20 miles (32 km) in width which has since then, over the last more than 200 years retreated by 65 miles (105 km) to the head of the bay at Tarr Inlet, and in this process left separate 20 other glaciers in its trail. In 1890, the name “Glacier Bay” as such was given to the bay by Captain Lester A. Beardslee of the U.S. Navy. It was first proclaimed a U.S. National Monument on February 25, 1925, by President Calvin Coolidge.〔〔〔〔〔 The Glacier Bay has many branches, inlets, lagoons, islands, and channels that holds prospects for scientific exploration and visual treat. Thus, the area is popular as a cruise ship destination during summer season. However, there are restrictions imposed by the National Park Service on the numbers of vessels that can operate in a day to 2 cruise ships, 3 tour boats, 6 charter vessels, and 25 private vessels. According to National Park Service statistics for calendar year 2009, 444,653 people visited Glacier Bay, with 422,919 of those being cruise ship passengers.〔〔(【引用サイトリンク】title= Glacier Bay by Boat )〕 ==History== Geologists believe that Glacier Bay existed during a minimum of four Glacial periods ending with the Little Ice Age, which has a 4,000-year-old record, as the latest period. All glaciers in the park today are said to be remnants of this glacial period.〔(【引用サイトリンク】title= Frequently Asked Questions )〕 The earliest recorded history of the Glacier Bay area starts with the 1741 Russian expedition of Vitus Bering and Aleksei Chirikov. La Perouse (after whom one of the glaciers in the bay was named subsequently) established contact with the local inhabitants, the Tlingits at Lutya Bay, in 1786. This was followed by the Russians staking their claim to the region.〔(【引用サイトリンク】title= Glacier Bay National Park and Preserve )〕 In 1794, Joseph Whidbey, master of the ''Discovery'' during George Vancouver's 1791-95 expedition, reported that his exploration of this part of the coast was blocked by a wall of 2 miles (3.2 km) width and 1,200 metres (3,900 ft)) thick. Vancouver claimed the land for Britain in conflict with an earlier Russian claim, which was resolved by the Anglo-Russian Convention of 1825. The United States purchased Alaska from the Russians in 1867 with a claim under that treaty of owning all lands up to "the summit of the mountains situated parallel to the coast". The United States and Canada agreed that an arbitration board would draw the exact boundary. The arbitration award given in 1903 resolved the Alaska boundary dispute by drawing a line that linked the mountain peaks in this area. Because the agreement froze the exact boundary in 1903, further retreat of the glacier does not alter the boundary as the coast extends northward.〔(【引用サイトリンク】title=Alaska Boundary Dispute )〕 As a result, the northern edge of Tarr Inlet is approaching the boundary. With the discovery of gold in the area, gold rush brought miners to the area. In 1890, Willoughby Island in Glacier Bay was the scene of a meeting of the miners, which was followed by the establishment of the Berry mining district. In the 1890s, a salt mine was established at Bartlett Cove. Fox farms and a cannery were also established; however, the cannery was abandoned in 1935.〔 John Muir, the naturalist, conservationist and scientist, pioneered the focus of the world on the Glacier Bay phenomenon. During his research Muir had witnessed the glaciers in action. He had noted that the ice had retreated almost all the way up.〔〔 In 1888 (1889 is also mentioned in some references) when John Muir first visited the Bay, this wall was and retreated from the sea by . Now, it stands retreated to , as a remnant of the old wall of the glacier system and has 16 major tidewater glaciers (10, 12 and 15 are also mentioned in some references).〔 In 1899, wealthy railroad magnate Edward Harriman arranged for a maritime expedition called the Harriman Alaska Expedition to Alaska comprising an elite community of scientists, artists, photographers, and naturalists to explore and document the Alaskan coast. The voyagers, spent two months traveling from Seattle, along the coast of Alaska, to Siberia, and back again. In many ways, the expedition was an intersection of 19th-century science and 20th-century science. The expedition claimed to have discovered some 600 species that were new to science, including 38 new fossil species. They charted the geographic distribution of many species. They discovered an unmapped fiord and named several glaciers. John Muir and his friend Harriman who were members of this expedition were instrumental in governmental lobbying on National Park legislation says. The Herriman expedition was instrumental in documenting the extent of the glacier's retreat in 1899. John Muir was seeking corroboration of the continental glaciation theories of Louis Agassiz, whose controversial ''Etudes sur les Glaciers'' was published in 1840.〔 The year 1893 recorded the arrival of the first tourist ship at the entrance to the Bay, at Bartlett Cove, which over the years has become central to the tourist trade in the Glacier Bay. By 1916, the Grand Pacific Glacier was at the head of Tarr Inlet, about from Glacier Bay's mouth. This is the fastest documented glacial retreat ever. In 1925, Glacier Bay was declared a national monument.〔〔 For centuries, the Glacier Bay has been the home land of the Huna Tlingit native tribes of Alaska. Their oral traditions indicate being displaced by the last advance of the glacier. They continue to be part of the Bay residents and it is woven into the "tapestry of their lives".〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Glacier Bay Basin」の詳細全文を読む スポンサード リンク
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