Akinomiya Hot Springs
Aki no Miya Onsenkyo
Kawara-no-Yukko (Riverbed Onsen) soaking pool at the Yakunai River in Akinomiya Onsenkyo.
Coordinates38°57′36″N 140°32′25″E / 38.96000°N 140.54028°E / 38.96000; 140.54028
Typegeothermal
Temperature162°F / 72°C
Akinomiya Hot Springs is located in Akita Prefecture
Akinomiya Hot Springs
Akinomiya Hot Springs is located in Japan
Akinomiya Hot Springs

The Akinomiya Hot Springs also known as Aki no Miya Onsenkyo is a thermal spring system and hot springs village in the Akinomiya Geothermal Area[1] located along the western base of Mount Kurikoma in Akita Prefecture, Japan, (formerly Dewa Province, and after the Meiji era, Ugo Province). There are more than 50 hot springs and fumaroles in the area.[2]

According to legend, the hot springs are the oldest in the prefecture. They were established 1,200 years ago.[3] The onsen at Akinomiya were officially recognized in the Edo period (1603-1868) by the Akita Clan.[4][5]

Some of the well known springs within the system include Inazumi, Takanoyu, Yunodai, Yunomata, among others found along the Yakunai River. Takanoyu Onsen is one of the better known hot springs of the Akinomiya Hot Springs region. The footbaths, Kawara-no-Yukko (Riverbed Onsen), are accessed by digging among the river stones with a shovel to form shallow soaking pools.[6]

There have been geothermal energy developments such as power plants within the area.[7] Approximately 70% of the residential households draw their hot water from the springs.[8]

The springs were written about by the Japanese novelist, poet and philosopher Saneatsu Mushanokoji among others.[6]

The spring water emerges from the source at 162°F / 72°C.[6]

Location and transportation

The Akinomiya Onsen area is located on highway route 108. By car from Yokobori, Akita, it is a 30 minute drive south. Akinomiya is served by the Yokobori Station via the JR East Ōu Main Line serving Akita prefecture. High speed rail service from Tokyo serves the southern Akita area via the Yamagata Shinkansen Shinjo Station or the Tohoku Shinkansen Furukawa Station.

Climate

Climate data for Akinomiya (1991−2020 normals, extremes 1976−present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 11.6
(52.9)
16.1
(61.0)
17.4
(63.3)
27.6
(81.7)
31.2
(88.2)
31.4
(88.5)
35.3
(95.5)
35.1
(95.2)
32.4
(90.3)
27.9
(82.2)
22.9
(73.2)
17.3
(63.1)
35.3
(95.5)
Mean daily maximum °C (°F) 0.4
(32.7)
1.3
(34.3)
5.2
(41.4)
12.3
(54.1)
19.0
(66.2)
22.7
(72.9)
25.9
(78.6)
27.3
(81.1)
22.9
(73.2)
16.7
(62.1)
10.0
(50.0)
3.2
(37.8)
13.9
(57.0)
Daily mean °C (°F) −2.2
(28.0)
−1.9
(28.6)
1.0
(33.8)
6.7
(44.1)
13.3
(55.9)
17.6
(63.7)
21.3
(70.3)
22.3
(72.1)
18.2
(64.8)
11.9
(53.4)
5.7
(42.3)
0.2
(32.4)
9.5
(49.1)
Mean daily minimum °C (°F) −5.0
(23.0)
−5.0
(23.0)
−2.6
(27.3)
1.8
(35.2)
7.9
(46.2)
13.0
(55.4)
17.6
(63.7)
18.6
(65.5)
14.4
(57.9)
7.8
(46.0)
1.9
(35.4)
−2.4
(27.7)
5.7
(42.2)
Record low °C (°F) −15.5
(4.1)
−15.3
(4.5)
−11.5
(11.3)
−7.4
(18.7)
−0.8
(30.6)
3.9
(39.0)
8.4
(47.1)
9.8
(49.6)
2.3
(36.1)
−1.0
(30.2)
−6.2
(20.8)
−12.1
(10.2)
−15.5
(4.1)
Average precipitation mm (inches) 197.8
(7.79)
135.8
(5.35)
142.5
(5.61)
124.2
(4.89)
128.6
(5.06)
139.9
(5.51)
237.5
(9.35)
210.2
(8.28)
179.4
(7.06)
177.7
(7.00)
201.4
(7.93)
229.2
(9.02)
2,104.2
(82.84)
Average snowfall cm (inches) 295
(116)
213
(84)
152
(60)
28
(11)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
26
(10)
198
(78)
913
(359)
Average precipitation days (≥ 1.0 mm) 24.8 20.7 19.0 14.6 12.9 12.0 14.7 13.4 13.9 14.7 18.8 23.9 203.4
Average snowy days (≥ 3 cm) 23.0 19.0 16.9 4.1 0 0 0 0 0 0 2.5 15.0 80.5
Mean monthly sunshine hours 22.5 41.3 93.7 148.1 183.7 160.2 133.9 164.7 127.1 116.9 75.5 33.9 1,301.7
Source: Japan Meteorological Agency[9][10]

See also

References

  1. Nakanishi, Shigetaka. "The Wasabizawa Reservoir Characterization, Sustainable Akinomiya Geothermal Field: Development Stakeholder Engagement" (PDF). JOGMEC. Retrieved 18 October 2021.
  2. Kurozumi, Hideyuki; Kajiwara, Tatsuya; Suzuki, Iwao; Fukuda, Daisuke; Takemoto, Satoshi; Yanagiya, Shigeo; Ishizaki, Yukihiro; Kizaki, Ariyasu; Takahashi, Masahiro; Saeki, Kazuhiro; Tamesue, Takaaki; Ota, Hirobumi (2000). "Geothermal systems in the Akinomiaya Area, Northeast Japan" (PDF). Proceedings World Geothermal Congress 2000: 1371–1376. Retrieved 18 October 2021.
  3. Akinomiya Hot Springs Resort: Discovery of Akinomiya Hot Springs
  4. "The Hot Spring in Akita". Akita. Retrieved 18 October 2021.
  5. "Takanoyu Onsen". Japan Free Journal. Retrieved 20 October 2021.
  6. 1 2 3 "Akinomiya Onsenkyo (Hot Spring Village)". Tohokukanko. Retrieved 18 October 2021.
  7. Takashima, Isao. "Thermal History of the Akinomiya-Oyasu Geothermal Field" (PDF). Geothermal Energy.org Mining College, Akita University. Retrieved 18 October 2021.
  8. "Akinomiya Önsen Area". Komachi Shuttle. Retrieved 20 October 2021.
  9. 観測史上1~10位の値(年間を通じての値). JMA. Retrieved March 24, 2022.
  10. 気象庁 / 平年値(年・月ごとの値). JMA. Retrieved March 24, 2022.
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