Do this automatically from now on
Sunday, Sep 02, 2012
Aerial monitoring conducted by the Japan Coast Guard (JCG) on August 26th revealed a previously unobserved circular area of light green discolored water measuring approximately 900 m in diameter about 1,300 m southeast of Aogashima Island’s southern edge at a depth of 63m. Large areas of light-brown and light-green discolored water were seen around the island’s northern coast, and light-brown and light-green discolored water were also seen around its southeastern coast, these discolorations had previously been observed on a small scale. ...
[more]
Aoga-shima volcano eruptionsstratovolcano 423 m / 1,388 ft
Izu Islands, Japan, 32.45°N / 139.76°E Eruption list: 1781-85, 1670-80, 1652, 600 BC ± 200 years, 1100 BC ± 300 years, 1200 BC ± 50 years, 1800 BC ± 100 years 1781-85 eruption (Tenmei eruption)Following a year of increased hydrothermal activity since 1780, earthquakes and small ash eruptions occurred on 3 and 4 May 1781. On 10 and 11 April 1783, a strong strombolian-lava fountain eruption started and built a new scoria cone inside the crater. 61 houses were burned and there were 7 fatalities.Similarly, on 18 April 1785, strong strombolian eruptions resumed and built a second cone in the crater. The eruption caused 130-140 fatalities (although details are not known), while 163 residents escaped to Hachijo-jima Island. The eruption also produced lava flows inside Ikenosawa Crater. From historic documents, it seems that by 1787 the eruption had ended. --- Source: Takada et al (1992) "Geology of Aogashima Volcano, Izu Islands, Japan", Bulletin of the Volcanological Society of Japan 37(5), pp. 233-250 |
 |
