Skip to main content

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.

image
Tamagawa Hot Spring

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

image

image

image

image

image

image

image

image

image

Comments

Popular posts from this blog

Nabatean City of Petra

Petra is a historical and archaeological city in the Jordanian governorate of Ma'an that is famous for its rock cut architecture and water conduits system. Established sometime around the 6th century BC as the capital city of the Nabataeans, it is a symbol of Jordan as well as its most visited tourist attraction. It lies on the slope of Mount Hor in a basin among the mountains which form the eastern flank of Arabah (Wadi Araba), the large valley running from the Dead Sea to the Gulf of Aqaba. Petra has been a UNESCO World Heritage Site since 1985. Petra

Karstic Peaks Guilin

Yangshuo is located in Yangshuo Town. Surrounded by karst peaks and bordered on one side by the Li River. It is easily accessible by bus or by boat from nearby Guilin. Over the years, it has become popular with foreign backpackers. Visitors to Yangshuo can swim in the Li River or the cleaner Yu Long (Dragon River), climb one of many nearby karst peaks, hire a bicycle for a cycling trip through the karst scenery, arrange a sightseeing trip on the Li River by bamboo raft or cruise boat, or visit a number of local cave systems, including a butterfly cave. Karstic Peaks Guilin

Garajonay National Park

Laurel forest covers some 70% of this park, situated in the middle of the island of La Gomera in the Canary Islands archipelago. The presence of springs and numerous streams assures lush vegetation resembling that of the Tertiary, which, due to climatic changes, has largely disappeared from southern Europe. La Gomera lies to the west of Tenerife, and is one of seven islands that make up the Canary Islands archipelago off the north-west coast of Africa in the Atlantic. The island is accessible by ferry from Tenerife. The park can be reached by road from the island's major towns and villages. Garajonay National Park