My Experience: Left Takasaki at about 445 AM and arrived at the Oku Nikko Yumoto Hondori South Parking Lot at around 7 AM. If I recall correctly, I started the hike around 745 - 8 AM and ultimately completed the hike around 3 PM. I had went out the night previously with family and not until later in the hike did I realize I was somewhat "hungover". The hike overall I felt was fairly steep and aggressive going up. I can foresee doing this hike again at another time of year.
Volcano No. - E09
Volcano name - Nikko Shirane Volcano Group
Geologic code - Q3m
Main activity period - Late Pleistocene - Holocene
Activity period / recent activity - From 20,000 yBP.
Volcano type - Lava flow, Lava dome
Representative rock type - Intermediate
Main rock type - Andesite
Height above sea level - 2578 m
Active volcano name by JMA - Nikko-Shiranesan - Constantly Monitored
Record of eruption & disaster
- 13 Sep 1649: Major phreatic eruption: Ash fallout. New crater formed.
- 14 May 1872: Ash cloud: New crater formed on the southwestern flank.
- 12 Mar 1873: Minor phreatic eruption: Ash fallout, Lahar.
- 5 Dec 1889: Minor phreatic eruption: Ash fallout, Lahar.
- 22 Aug 1890: Minor phreatic eruption: Ash fallout, Lahar.
- From Jul-Sep 1952: Ash cloud.
- 1993-95 Various times - Earthquakes and volcanic tremors. Micro-seismic activity near Lake Chuzenji and micro-seismic / tremor activity just under the summit.
- 2001 March 31-early April - Earthquake, seismic activity, northwest to northeast of Mt. Shirane, Nikko (depth less than 5km).
- 2011 March - Earthquake. After the 2011 Tōhoku earthquake and tsunami, seismicity increased around 5km to the west and northwest, and from 5 to 10km from the east to the southeast.
Source - Geological Survey of Japan (GSJ)
About: Mount Nikkō-Shirane (日光白根山, Nikkō-Shirane-san) is a stratovolcano in the Nikkō National Park in central Honshū, the main island of Japan. It stands at 2,578 m high. It is the highest mountain in northeastern Japan (no higher mountains exist in the east or north of this mountain). Its peak (Mt Okushirane) is a Lava dome of andesite. Mt Nikkō-Shirane is listed in the 100 famous mountains in Japan proposed by Kyuya Fukada and also of one of the famous mountains of Tochigi and Gunma prefectures respectively.
Not to be confused with Mount Kusatsu-Shirane elsewhere in Gunma Prefecture, it is located at the boundary between Nikko City, Tochigi Prefecture and Katashina Village, Tone County Gunma Prefecture. Mt. Nikko Shirane is surrounded by the mountains of the Shirane volcano (Neogene volcano) and is often hidden by clouds throughout the year. From the Kanto Plain only the dome-shaped (Quaternary volcano) summit is visible.
In winter if the weather conditions permit, the white snow fields on the darker surroundings slopes can make the mountain and peak appear exceptionally white. Its peak is the highest point in both Tochigi and Gunma Prefectures. The area around Shirane Volcano is designated as Nikko National Park in which there are various natural features such as Goshiki pond, Yuno lake, Yu falls, Senjo moor, and Odashiro moor. Being a designated national park, the alpine plants and vegetation are protected.
"Shirane" means a white mountain covered with snow, hence such name can be found in many places in Japan. In order to distinguish this mountain from other "Shirane", this mountain is called "Nikkō-Shirane". Its name in Japanese is written 白根 (shira-ne) which are the characters for white and root respectively. The peak Okushirane is written 奥白根 (oku-shirane) means deepest, or inner-most. (Source: Wikipedia)
Geological Summary: Nikko-Shiranesan is a relatively small, 2578-m-high andesitic volcano consisting of a group of four lava domes resting on a shield volcano that rises to the NW of scenic Lake Chuzenji in Nikko National Park. All historical eruptions, recorded during the 17th-20th centuries, have consisted of phreatic explosions from Shiranesan, the youngest lava dome. Viscous lava flows with prominent levees from the underlying shield volcano Keizukayama were responsible for the formation of several scenic lakes north of the volcano. (Source: Global Volcanism Program)
Volcano that has a depression due to erosion between Mt. Shirane and Mt. Goshiki, which are composed of old Neogene volcanic rocks around the highest peak, Mt. Okushirane. This is a newly formed lava dome where there are mountains of the Shirane volcano group such as Maeshirane, Goshikiyama, Sotoyama, and Shiranekakuzan, which are stratovolcanoes. About 5300 years ago, there have been several large-scale eruptions.
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6 июл 2024
