Mount Nasu (那須岳, Nasu-dake) is a group of complex volcanoes located in the northeast part of Nikkō National Park, Japan. The tallest peak is Sanbonyari Peak at a height of 1,916.9 m (6,289 ft). Mount Nasu is one of the 100 Famous Japanese Mountains.
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| Mount Nasu | |
|---|---|
| 那須岳 | |
 Nasu Mountains | |
| Highest point | |
| Peak | Sanbonyari Peak |
| Elevation | 1,916.9 m (6,289 ft)[1] |
| Listing | Mountains of Japan |
| Coordinates | 37°09′N 139°57′E |
| Naming | |
| Language of name | Japanese |
| Geography | |
  Mount Nasu On the border of Nasushiohara and Nasu of Tochigi Prefecture, Nishigō, Nishishirakawa of Fukushima Prefecture, Japan | |
| Parent range | Ōu Mountains |
| Geology | |
| Mountain type | Complex volcano |
| Last eruption | November 1963[2] |
Major peaks
Mount Nasu has the following major peaks:
- Sanbonyari Peak – 1916.9 m
- Chausu Peak – 1915 m
- Asahi Peak – 1896 m
- Minamigatsusan – 1776 m
- Kuro-oya Peak – 1589 m
These peaks are known collectively as Nasu Five Peaks (那須5岳, Nasu-Go-Take).
Climate
| Climate data for Mount Nasu (1991−2020 normals, extremes 1976−present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 12.7 (54.9) |
16.8 (62.2) |
21.1 (70.0) |
26.8 (80.2) |
29.6 (85.3) |
30.3 (86.5) |
31.8 (89.2) |
32.2 (90.0) |
29.5 (85.1) |
24.6 (76.3) |
20.0 (68.0) |
17.4 (63.3) |
32.2 (90.0) |
| Mean daily maximum °C (°F) | 1.9 (35.4) |
2.7 (36.9) |
6.8 (44.2) |
13.0 (55.4) |
18.2 (64.8) |
20.7 (69.3) |
24.3 (75.7) |
25.4 (77.7) |
21.4 (70.5) |
16.1 (61.0) |
10.9 (51.6) |
5.1 (41.2) |
13.9 (57.0) |
| Daily mean °C (°F) | −1.7 (28.9) |
−1.3 (29.7) |
2.0 (35.6) |
7.8 (46.0) |
13.0 (55.4) |
16.4 (61.5) |
20.2 (68.4) |
21.0 (69.8) |
17.3 (63.1) |
11.8 (53.2) |
6.4 (43.5) |
1.1 (34.0) |
9.5 (49.1) |
| Mean daily minimum °C (°F) | −5.3 (22.5) |
−5.3 (22.5) |
−2.4 (27.7) |
2.6 (36.7) |
7.7 (45.9) |
12.3 (54.1) |
16.7 (62.1) |
17.5 (63.5) |
13.8 (56.8) |
7.7 (45.9) |
2.0 (35.6) |
−2.6 (27.3) |
5.4 (41.7) |
| Record low °C (°F) | −11.7 (10.9) |
−12.1 (10.2) |
−10.4 (13.3) |
−6.0 (21.2) |
−2.3 (27.9) |
3.6 (38.5) |
8.7 (47.7) |
8.9 (48.0) |
3.2 (37.8) |
−1.2 (29.8) |
−6.1 (21.0) |
−10.2 (13.6) |
−12.1 (10.2) |
| Average precipitation mm (inches) | 52.6 (2.07) |
42.8 (1.69) |
101.6 (4.00) |
139.6 (5.50) |
180.8 (7.12) |
220.5 (8.68) |
305.7 (12.04) |
303.9 (11.96) |
305.3 (12.02) |
212.6 (8.37) |
89.2 (3.51) |
60.1 (2.37) |
2,014.7 (79.33) |
| Average snowfall cm (inches) | 103 (41) |
79 (31) |
45 (18) |
7 (2.8) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
4 (1.6) |
55 (22) |
293 (116.4) |
| Average precipitation days (≥ 1.0 mm) | 9.1 | 8.3 | 10.4 | 11.3 | 12.1 | 15.9 | 18.3 | 17.0 | 14.8 | 11.5 | 8.3 | 9.1 | 146.1 |
| Average snowy days (≥ 1 cm) | 11.5 | 8.8 | 5.5 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0.4 | 5.9 | 32.7 |
| Mean monthly sunshine hours | 131.0 | 129.0 | 156.4 | 170.4 | 169.1 | 108.8 | 98.7 | 115.3 | 98.9 | 115.1 | 130.1 | 132.6 | 1,555.2 |
| Source 1: JMA[3] | |||||||||||||
| Source 2: JMA[4] | |||||||||||||
Eruption
It is estimated that Mount Nasu started erupting 600 thousand years ago. The eruption started from the north end of the mountain range, at Kashi-Asahi Peak. Only Chausu Peak is active today.
Access
- Nasu Sancho Station of Nasu Ropeway
- Sandogoya Onsen Bus Stop of Kanto Transportation
Gallery
Chausu lava dome and Asahi Peak
Chausu lava dome and fumes
Asahi Peak
West view from Sanbonyari Peak
Sanbonyari Peak and snow in summer
At the Sanbonyari Peak
Topographic map
To Asahi Peak
References
External links
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