Aogashima
| Aogashima | ||
|---|---|---|
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| Waters | Pacific Ocean | |
| Archipelago | Izu Islands | |
| Geographical location | 32 ° 27 '29 " N , 139 ° 46' 4" E | |
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| length | 3.5 km | |
| width | 2.5 km | |
| surface | 5.97 km² | |
| Highest elevation | Ōdonbu 423 m |
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| Residents | 175 (October 1, 2019) 29 inhabitants / km² |
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| main place | Aogashima | |
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Aogashima ( Japanese 青 ヶ 島 , dt. "Blue Island") is an island of volcanic origin in the Pacific Ocean . Geographically, it belongs to the Japanese Izu Islands and, like the entire archipelago, administratively belongs to the Tokyo Prefecture . Aogashima is 358 km south of Tokyo and 71 km south of the nearest island Hachijō-jima , from which it is administered and with which it forms the sub-prefecture of Hachijō .
geography
Aogashima is about 3.5 km long, 2.5 km wide and has an area of 5.97 km².
Aogashima is an active stratovolcano . The island is characterized by a steep cliff coast as well as two cones and a caldera with the name Ikenosawa ( 池 之, ), which was formed between 2100 and 2600 years ago. The diameter of the caldera is about 1.5 kilometers. Pyroclastic and lava flows repeatedly poured out of both the main and the side craters . About 3000 years ago the entire island was covered by powerful pyroclastic currents. Over the next 600 years, the southeast crater was filled with more lava flows and ash deposits. The last volcanic eruption took place between 1781 and 1785; with him the cinder cone formed in the middle of the caldera. Around 140 people died in the outbreak; In 1785 the islanders were evacuated to Hachijō-jima . The island was uninhabited for the next 50 years. The central volcanic cone is called Maruyama ( 丸山 , "round mountain") with 211 m. The highest point is that of the Ōdonbu ( 大 凸 部 , "large, outstanding piece") on the northwestern rim of the crater with 423.0 m.
Aogashima has been the southernmost inhabited island in the archipelago since the Torishima eruption in 1902. The 175 (as of October 1, 2019) residents live in the village of Aogashima , which is also the independent municipality in Japan with the lowest population. The population density is 29 inhabitants per km². The settlement is located on the gently sloping plain north of the crater rim.
There is no airfield on the island. It can only be reached by ferry from the island of Hachijō-jima , which is almost 70 kilometers away .
Web links
- Aogashima in the Global Volcanism Program of the Smithsonian Institution (English)
- Aogashima in the database Japanese Quaternary Volcanoes (English)
- Aogashima at the Japan Meteorological Agency (Japanese)
- Volcanic Island, Aogashima, Japan - good aerial view of the entire island looking into the crater.
Individual evidence
- ↑ 島 面積 . (PDF; 32 kB) (No longer available online.) Kokudo Chiriin , October 1, 2011, archived from the original on May 12, 2012 ; Retrieved November 8, 2012 (Japanese). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ AO-GA-SHIMA. (No longer available online.) In: Japanese Quaternary Volcanoes. National Institute of Advanced Industrial Science and Technology (AIST), formerly the original ; accessed on December 13, 2012 . ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ onegai-kaeru.jp: How to get this island? (English)
