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Herald Island (Arctic)
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Herald Island (Arctic)
Herald Island (Russian: Остров Геральд, Ostrov Gerald) is a small, isolated Russian island in the Chukchi Sea, 60 kilometres (30 nautical miles) east of Waring Point, Wrangel Island. It rises in sheer cliffs, making it quite inaccessible, either by ship or by plane. The only bit of accessible shoreline is at its northwestern point, where the cliffs have crumbled into piles of loose rocks and gravel. Its area is 11.3 km2 (4+3⁄8 sq mi) and the maximum height above sea level is 364 m (1,194 ft). The island is unglaciated and uninhabited. [original research?]
Herald Island belongs administratively to the Chukotka Autonomous Okrug of the Russian Federation. Along with Wrangel Island, Herald Island has been part of the Wrangel Island Wildlife Preserve, a Russian National Park, since 1976. Cape Dmitrieva on Herald Island, marks the easternmost limits of the nature reserve.
Herald Island is named after survey vessel HMS Herald, from which the island was discovered in 1849.
Herald Island is composed of sedimentary, metamorphic, and igneous rocks. The northeastern tip of this island consists of a 600 m (2,000 ft) thick sequence of sandstone, phyllite, quartzose sandstone, quartz-chlorite-sericite schist mylonite, and cataclastic quartz syenite. These rocks are of either Proterozoic or Late Paleozoic age. The bulk of this island consists of a Jurassic granite pluton.
Herald Island, along with nearby Wrangel Island, has been designated an Important Bird Area (IBA) by BirdLife International.
The climate is severe. For most of the year, the region is covered by masses of cold Arctic air with low moisture and dust content. In summer, warmer and moister Pacific air blows from the south-east. Dry and strongly warmed air masses periodically blow from Siberia.
The polar day lasts from the middle of May until 20 July. The polar night lasts from the middle of November through the end of January.
Winters are prolonged, and characterized by sustained freezing weather and strong northern winds. The mean temperature in January is −21.3 °C (−6.3 °F), and the coldest months are February and March. During this period the temperature can remain below −30 °C (−22 °F) over a period of weeks, with frequent snowstorms and wind speeds of 40 m/s (80 kn) or more. The summer is cool, with some frosts and snowfall. The mean temperature in July fluctuates from 2 to 2.5 °C (35.6 to 36.5 °F). The mean relative humidity is around 88%, and the yearly precipitation is around 120 mm (4.7 in).
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Herald Island (Arctic)
Herald Island (Russian: Остров Геральд, Ostrov Gerald) is a small, isolated Russian island in the Chukchi Sea, 60 kilometres (30 nautical miles) east of Waring Point, Wrangel Island. It rises in sheer cliffs, making it quite inaccessible, either by ship or by plane. The only bit of accessible shoreline is at its northwestern point, where the cliffs have crumbled into piles of loose rocks and gravel. Its area is 11.3 km2 (4+3⁄8 sq mi) and the maximum height above sea level is 364 m (1,194 ft). The island is unglaciated and uninhabited. [original research?]
Herald Island belongs administratively to the Chukotka Autonomous Okrug of the Russian Federation. Along with Wrangel Island, Herald Island has been part of the Wrangel Island Wildlife Preserve, a Russian National Park, since 1976. Cape Dmitrieva on Herald Island, marks the easternmost limits of the nature reserve.
Herald Island is named after survey vessel HMS Herald, from which the island was discovered in 1849.
Herald Island is composed of sedimentary, metamorphic, and igneous rocks. The northeastern tip of this island consists of a 600 m (2,000 ft) thick sequence of sandstone, phyllite, quartzose sandstone, quartz-chlorite-sericite schist mylonite, and cataclastic quartz syenite. These rocks are of either Proterozoic or Late Paleozoic age. The bulk of this island consists of a Jurassic granite pluton.
Herald Island, along with nearby Wrangel Island, has been designated an Important Bird Area (IBA) by BirdLife International.
The climate is severe. For most of the year, the region is covered by masses of cold Arctic air with low moisture and dust content. In summer, warmer and moister Pacific air blows from the south-east. Dry and strongly warmed air masses periodically blow from Siberia.
The polar day lasts from the middle of May until 20 July. The polar night lasts from the middle of November through the end of January.
Winters are prolonged, and characterized by sustained freezing weather and strong northern winds. The mean temperature in January is −21.3 °C (−6.3 °F), and the coldest months are February and March. During this period the temperature can remain below −30 °C (−22 °F) over a period of weeks, with frequent snowstorms and wind speeds of 40 m/s (80 kn) or more. The summer is cool, with some frosts and snowfall. The mean temperature in July fluctuates from 2 to 2.5 °C (35.6 to 36.5 °F). The mean relative humidity is around 88%, and the yearly precipitation is around 120 mm (4.7 in).
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