Bayonnaise Rocks
The Bayonnaise Rocks (Japaneseベヨネース列岩, Beyonēsu - retsugan, dt " Bayonnaise Rock chain " ) are a small, uninhabited rocky group of volcanic islands in the Pacific Ocean. They are between Aogashima and Sumisu -jima Japanese Izu Islands.
Management
As the entire island chain of the Izu islands belong administratively to the Bayonnaise Rocks Tokyo Prefecture. They are part of the sub-prefecture Hachijo, which is managed by Hachijo -jima off. However, you belong to, as well as the three located further south Izu Islands ( Sumisu - jima Torishima and Sōfugan ) to no congregation and are thus de facto unincorporated community. They are used by municipalities Aogashima claimed (based on the island Aogashima nearest 64 km ) and the 130 km further north Hachijo community.
Geography
The Bayonnaise Rocks lie 408 km south of Tokyo and 65 km south-southeast of the neighboring island Aogashima. The south adjacent uninhabited island Sumisu -jima is 49 km away and therefore represents the closest country dar. Since 1869 volcanic activity in the region known since then there have been several eruptions. The last eruption was in 1970. The rocks lie on the western edge of a submarine caldera that rises just there above the water level. Eight kilometers to the east lies the reef Myojin - shō (明 神 礁), a post - caldera cone with a minimum depth of 50 meters.
During the volcanic eruption of 17 September In 1952 at the location of the reef Myojin - shō briefly one consisting of a lava dome island with a height of more than 10 meters which was destroyed several times in subsequent eruptions and re- emerged until recently on 3 September 1953 sank again. Through an eruption on 24 September 1952, the Japanese research vessel Kaiyo Maru sank; all 31 people on board died. Currently, the lowest water depth is 50 meters there.
The vegetation of the Bayonnaise Rocks is poor. The islands are a resting place for migratory birds.
The rocky islands were named after the French warship Bayonnaise, with which they were discovered in 1846.
Urania Iceland
Urania Iceland was a short-lived Island at 31 ° 56 ' N, 140 ° 0' O31.933333333333140 about 10 km northeast of Bayonnaise Rocks. [Note 1] The volcanic island emerged in February 1946 out of the sea, grew to March at 46 m height at then until January 1947 to sink into the sea. The island was named after the destroyer HMS Urania, which they discovered at the time of their creation.