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Thermal Monitoring of the Lithosphere by the Interaction of Deep Low-Frequency and Ordinary High-Frequency Earthquakes in Northeastern Japan

Author

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  • Yota Suzuki

    (Fukushima Renewable Energy Research Institute, National Institute of Advanced Industrial Science and Technology, Koriyama 963-0298, Japan)

  • Hirofumi Muraoka

    (Institute of Regional Innovation, Hirosaki University, Aomori 030-0813, Japan)

  • Hiroshi Asanuma

    (Fukushima Renewable Energy Research Institute, National Institute of Advanced Industrial Science and Technology, Koriyama 963-0298, Japan)

Abstract

Deep low-frequency earthquakes (LFEs) are known to occur in dehydration phenomena from the subducting hydrous slab and in magmatic phenomena beneath Quaternary volcanoes in Japan. To realize the spatial and temporal characteristics of the magmatic deep low-frequency earthquakes, their hypocenters along with those of ordinary overhead high-frequency earthquakes are analyzed beneath six volcanic fields in northeastern Japan. This trial clarifies the rising basaltic magma conduits and rheological profiles of the lithosphere. Deep low-frequency earthquakes tend to form three vertical clusters corresponding to the rheological strength peak of the peridotite upper mantle, gabbroic lower crust, and granitic upper crust. Interactive aseismic gaps between low- and high-frequency earthquakes reveal the brittle–plastic transition as an isothermal indicator in the lithosphere. This relationship provides a tool to monitor the thermal evolution of the lithosphere and to explore sustainable geothermal resources with basaltic magma replenishment systems.

Suggested Citation

  • Yota Suzuki & Hirofumi Muraoka & Hiroshi Asanuma, 2021. "Thermal Monitoring of the Lithosphere by the Interaction of Deep Low-Frequency and Ordinary High-Frequency Earthquakes in Northeastern Japan," Energies, MDPI, vol. 14(6), pages 1-11, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1546-:d:515013
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    References listed on IDEAS

    as
    1. Yota Suzuki & Hirofumi Muraoka & Hiroshi Asanuma, 2020. "Validation and Evaluation of an Estimation Method for Deep Thermal Structures Using an Activity Index in Major Geothermal Fields in Northeastern Japan," Energies, MDPI, vol. 13(18), pages 1-13, September.
    2. Tianhaozhe Sun & Kelin Wang & Toshiya Fujiwara & Shuichi Kodaira & Jiangheng He, 2017. "Large fault slip peaking at trench in the 2011 Tohoku-oki earthquake," Nature Communications, Nature, vol. 8(1), pages 1-8, April.
    3. Yota Suzuki & Seiichiro Ioka & Hirofumi Muraoka, 2014. "Determining the Maximum Depth of Hydrothermal Circulation Using Geothermal Mapping and Seismicity to Delineate the Depth to Brittle-Plastic Transition in Northern Honshu, Japan," Energies, MDPI, vol. 7(5), pages 1-9, May.
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