赫德岛和麦克唐纳群岛位于南大洋,距南极洲约1700公里,离佩思(Perth)西南部约4100公里。作为亚南极的活火山群岛,这两个岛屿打开了“地球心底之窗”,为人类提供了观察正在进行的地貌.
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Located in the Southern Ocean, this Australian external territory comprises mainly two volcanic islands, Heard Island and the McDonald Islands, featuring stark volcanic landscapes, glaciers, and the highest mountain in Australian territory, Mawson Peak.
赫德岛和麦克唐纳群岛(Heard Island and McDonald Islands、HIMI),南冰洋无人居住的荒岛,以南约1600公里达南极洲边沿。 1947年起纳入澳大利亚海外领地。 赫德岛和麦克唐纳群岛,自然遗产的探险胜地,适合科研考察与生态观察,无传统娱乐设施,但可体验极致的
The Heard Island and McDonald Islands group was formed by the plume type of volcanism, a process that is poorly understood in comparison with the earth''s other two main volcanic types ‑ subduction and seafloor spreading. This feature of the group offers an extraordinary view into the
赫德岛和麦克唐纳群岛(英语:Heard Island and McDonald Islands,简称:HIMI),印度洋无人居住的荒岛,1947年起纳入澳大利亚外岛领地,1997年获选为世界自然遗产(亚洲、大洋洲地区)。赫德岛以南约1600公里达南极洲边沿;除去南极洲和面积小于1000平公方公里的岛屿不算,赫德岛方圆3700公里内都是海洋,不见陆地。赫德岛80%的陆地都为冰川覆盖,岛上拥有比较稀少
Heard Island and McDonald Islands. Antarctica. Page last updated: November 27, 2024. Photos of Heard Island and McDonald Islands. view 3 photos. Country Flag. View Details. Country Map. View Details. Locator Map. View Details. Contents. Introduction. Geography. People and Society
McDonald Islands Marine Reserve Management Plan 2005, which aims to address a range of potential human pressures, most notably the risk of introduced species. Key Words: sub-Antarctic islands, Heard Island, McDonald Islands. LOCATION AND PHYSICAL CHARACTERISTICS The Heard Island and the McDonald Islands (HIMI) group
The geography of the Heard Island and McDonald Islands (HIMI) refers to the geography of Heard Island and the McDonald Islands, one of the most remote places on earth. The islands belong to Australia and are located 4,000 kilometres (2,485.5 mi) southwest of the mainland in
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The islands are part of the Southern Indian Ocean Islands tundra ecoregion that includes several subantarctic islands. In this cold climate, plant life is mainly limited to grasses, lichens, and mosses. Low plant diversity reflects the islands'' isolation, small size, severe climate, the short, cool growing season and, for Heard Island, substantial permanent ice cover. The main environmental deter
Mawson Peak on Heard Island is the highest Australian mountain (at 2,745 meters, it is taller than Mt. Kosciuszko in Australia proper), and one of only two active volcanoes located in Australian territory, the other being McDonald Island; in 1992, McDonald Island broke its dormancy and began erupting; it has erupted several times since, most
Heard Island and the McDonald Islands are free from introduced predators and provide crucial breeding habitat in the middle of the vast Southern Ocean for a range of birds. The surrounding waters are important feeding areas for birds and some scavenging species also derive sustenance from their cohabitants on the islands.
赫德岛和麦克唐纳群岛(英语: Heard Island and McDonald Islands,简称:HIMI),印度洋无人居住的荒岛,1947年起纳入澳大利亚 外岛领地,1997年获选为世界自然遗产(亚洲、大洋洲地区)。
赫德岛和麦克唐纳群岛(Heard Island and McDonald Islands、HIMI),南冰洋无人居住的荒岛,以南约1600公里达南极洲边沿。 1947年起纳入澳大利亚海外领地。 赫德岛和麦克唐纳群
antarctic Heard Island - 80% ice-covered, bleak and mountainous, dominated by a large massif (Big Ben) and an active volcano (Mawson Peak); McDonald Islands - small and rocky fish Mawson Peak, an active volcano, is on Heard Island
Key Words: sub-Antarctic islands, Heard Island, McDonald Islands. The Heard Island and the McDonald Islands (HIMI) group is located in the Indian Ocean sector of the Southern Ocean at approximately 53°S 73°30'E, some 4000 km southwest of Western Australia, 4700 km southeast of Africa and 1000 km north of the Antarctic continent.
The islands are small and rocky. In 1980, they consisted of McDonald Island (186 metres (610 ft) high), Flat Island (55 metres (180 ft) high) and Meyer Rock (170 metres (560 ft) high). They totalled approximately 2.5 square kilometres (1.0 sq mi) in area. Like Heard Island, they were surface exposures of the Kerguelen Plateau.
Heard Island and the McDonald Islands have no ports or harbours; ships must anchor offshore. The coastline is 101.9 km (63.3 mi) in extent, and a 12 nmi (22 km) territorial sea and 200 nmi (370 km) exclusive fishing zone are claimed. [ 2 ]
Importantly, Heard Island is the largest sub-Antarctic island with no known human introduced plant species or vertebrate predators. Ihe terrestrial flora is typically sub-Antarctic, with low-growing herbaceous flowering plants and bryophytes comprising the major components of the vegetation.
Heard Island has a number of small wetland sites scattered around its coastal perimeter, including areas of wetland vegetation, lagoons or lagoon complexes, rocky shores and sandy shores, including the Elephant Spit. Many of these wetland areas are separated by active glaciers. There are also several short glacier-fed streams and glacial pools.
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