Tamagawa Hot Spring

Tamagawa Hot Spring

The Tamagawa Hot Spring in Senboku, Akita Prefecture, Japan is the highest flow rate hot spring in Japan. Tamagawa Hot Spring has a flow rate of 150 liters/second. The Tamagawa Hot Spring feeds a 3 meter wide stream with a temperature of 98°C. The water from Tamagawa Hot Spring is also very acidic, with a pH of about 1.1.

There is also radioactive radium gas and other radioactive materials dissolved in the water from Tamagawa Hot Spring.Fact|date=October 2007

There are deposits of the radioactive mineral hokutolite near the spring. Hokutolite is composed of a type of barite (barium sulfate), including lead and traces of strontium and calcium. The hokutolite is about ten times as radioactive as the standard background. [ [http://www.media-akita.or.jp/akita-monuments/tamagawaE.html "Hokutolite Mineral Deposits of Tamagawa Hot Springs", article from Japanese Ministry of Agriculture, Forestry and Fisheries] ]

There is at least one more hot spring in Tamagawa. Nibukawa Hot Spring is also in Tamagawa.

References


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