BAYONNAISE ROCKS (ベヨネース列岩, Beyonēsu-retsugan) is a
group of volcanic rocks in the
* 1 Geography * 2 See also * 3 References * 4 External links
The rocks are the exposed portion of the western ridge of a submarine volcanic caldera , approximately 9 kilometres (5.6 mi) in diameter at a depth of approximately 1,000 metres (3,300 ft). The above sea-level portion has a surface area of approximately 0.01 square kilometers, with a summit height of 11 metres (36 ft). and consists of three large rocks and many smaller rocks.
The caldera is known to have erupted in 1869, 1870, 1871, 1896, 1906, 1915, 1934, 1946, 1952-1953, 1954, 1955, 1957, 1958, 1959, 1960, and 1970. The last known submarine eruption of the caldera was in 1988, which discolored the local water.
On the northeast rim of the same caldera 12.8 kilometres (8.0 mi) to
the east of the
Vegetation is sparse among the Bayonnaise Rocks. The islands are a resting place for migratory birds . Located in the Kuroshio Current , the area has abundant sea life, and is popular with sports fishermen.
* ^ A B C D "66. Beyonesu (Bayonnaise) Rocks (including Myojinsho)"