Interpretation of Gravity and Gamma-Ray Spectrometry Data in Low Temperature Hydrothermal Systems, Southeastern Part of Fukuoka, Japan

• Autorzy: Nishijima J. , Fujimitsu Y.

Identyfikatory

DOI

10.1515/acgeo-2016-0113

• Języki publikacji: EN

Abstrakty

EN

The Hakata hot springs area is located in Fukuoka City, which is in the southwestern part of Japan. Gamma-ray and gravity surveys were conducted to understand the relationship between the low-temperature hydrothermal systems and geophysical data of the area. The depth of the reservoir basement, which was derived from gravity data, gradually deepens toward the east; it includes some steep depth gradients in the Hakata hot springs area. High intensities of gamma-rays were detected around these gradients. In addition, higher hot spring temperatures and flow rates can be observed in this area. These results indicate that some part of the level of the basement where the hot springs are concentrated is a part of the Kego Fault and is similar to the fracture zone created by past activities of the fault. Moreover, these steep depth gradients act as a path for hot spring water from the deeper side of the granitic body to the surface.

Słowa kluczowe

EN

gravity; hydrothermal system; gamma ray; Hakata; hot springs; Kego Fault

PL

grawitacja; układ hydrotermalny; promieniowanie gamma; Hakata; gorące źródła

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2016
• Tom: Vol. 64, no. 6
• Strony: 2289--2304
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Nishijima J.

• Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan

autor

Fujimitsu Y.

• Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)