My Experience - I stayed the previous night at Kurokawa onsen after hiking also the previous day Aso and the day prior Unzen. I started the hike early around 8 AM after an only 20 minute drive from Kurokawa onsen to Makinoto Pass Trailhead (maps.app.goo.gl/NTMBb8gAiTFpa.... The total hike was around 14.5 KM (or 9 miles) with total move time about 6 hours and 20 minutes. The first couple hours of the day was hiking through mist and cloud layers and with very limited visibility until arriving at the Kuju shelter area leading up to Mount Kuju. I hiked all the Kuju peaks below including 2 minor peaks with the exception of Mimata
Imagery & Filming - Mixture of Photo's, iPhone 15 Pro and GoPro Hero 11 Video exported to RU-vid using high compression and compression quality of HDR - 2100PQ, therefore best for watching on Television on an HD 1080P60 or higher for maximum video quality.
About: Mount Kujū (九重山, Kujū-san), located on the border of Kokonoe and Taketa in Ōita Prefecture, Japan, is a stratovolcano in Kyushu Island, Japan, with a summit elevation of 1,791 metres (5,876 ft). It is one of the 100 Famous Japanese Mountains. It is part of the Aso-Kujū National Park. (Source: Wikipedia)
Volcano No. - J18
Volcano name - Kuju San
Geologic code - Q3m
Main activity period - Chibanian (Middle Pleistocene) - Holocene
Activity period / recent activity - From 0.2 Ma.
Latest eruption - AD 1996
Volcano type - Composite (compound) volcano, Lava dome
Representative rock type - Intermediate
Main rock type - Andesite, Dacite
Height above sea level - 1791 m
Location (Prefecture) OITA
Active volcano name by JMA - Kujusan
Record of eruption & disaster -
26 Jan 1662: Phreatic eruption?
1675: Phreatic eruption?
13 Aug 1738: Phreatic eruption?
11 Oct 1995: Phreatic eruption (Hosshou-san on the eastern flank): Ash fallout and minor lahar.
Oct, Nov, Dec 1995: Ash cloud: Ash fallout.
13 and 14 Jan 1996: Ash cloud: Ash fallout.
Source - Geological Survey of Japan (GSJ)
The Kujū range consists of a dozen or so volcanic bodies gathered in a region of 13km east-west and 10km north-south. The mountains in the range include:
Kujū Mountains
Mount Kujū (1,787 m) - The main peak (久住山) - Also pictured in video thumb
Mount Nakadake (1,791 m) - The highest peak in Kyushu
Mount Inaboshi (1,774 m)
Mount Hōsshō (1,762 m)
Mount Mimata (1,745 m)
Taisen Mountains
Mount Taisen (1,786 m)
Mount North (Kita) Taisen (1,706 m)
Mount Heiji (1,642 m)
The Kujū volcanic group is mainly composed of andesite and dacite, which is defined as the volcanic activity above the Miyagi pyroclastic flow deposit which formed about 200,000 years ago. The north and south areas of Mt. Kujū are plateau grasslands whose main industry is dairy farming.
Geological Summary: Kujusan is a complex of stratovolcanoes and lava domes lying NE of Aso caldera in north-central Kyushu. The group consists of 16 andesitic lava domes, five andesitic stratovolcanoes, and one basaltic cone. Activity dates back about 150,000 years. Six major andesitic-to-dacitic tephra deposits, many associated with the growth of lava domes, have been recorded during the Holocene. Eruptive activity has migrated systematically eastward during the past 5000 years. The latest magmatic activity occurred about 1600 years ago, when Kurodake lava dome at the E end of the complex was formed. The first reports of historical eruptions were in the 17th and 18th centuries, when phreatic or hydrothermal activity occurred. There are also many hot springs and hydrothermal fields. A fumarole on Hosho lava dome was the site of a sulfur mine for at least 500 years. Two geothermal power plants are in operation at Kuju. (Source: Global Volcanism Program)
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2 июл 2024
