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Oláh L, Tanaka HK, Mori T, Sakatani Y, Varga D. Structural health monitoring of sabo check dams with cosmic-ray muography. iScience 2023; 26:108019. [PMID: 37841596 PMCID: PMC10570126 DOI: 10.1016/j.isci.2023.108019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/14/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023] Open
Abstract
Debris dams have a crucial role in consolidation of river basins and allow erosion control, flood protection in mountainous areas. Many of these infrastructures have operated over five decades, thus structural health monitoring (SHM) of these infrastructures became timely due to their aging. Utilizing new techniques is required for inspecting a large number of dams and deciding about their reinforcement or reconstruction. In this work, we propose cosmic-ray muography as a complementary tool for the SHM of debris dams. We conducted the first muographic surveying of a sabo check dam in the Karasu River, Gunma, Japan. The average mass density image was produced with a spatial resolution of 0.5 m through the dam. The comparison of density data reconstructed by muography and gamma-ray logging suggest the internal deterioration of dam in the region where cement released out from the embankment body.
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Affiliation(s)
- László Oláh
- Earthquake Research Institute, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-0032, Japan
- International Muography Research Organization (MUOGRAPHIX), The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
| | - Hiroyuki K.M. Tanaka
- Earthquake Research Institute, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-0032, Japan
- International Muography Research Organization (MUOGRAPHIX), The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
| | | | | | - Dezső Varga
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
- Wigner Research Centre for Physics, Hungarian Research Network, 29-33 Konkoly-Thege Miklós Str., 1121 Budapest, Hungary
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Tanaka HK, Gallo G, Gluyas J, Kamoshida O, Lo Presti D, Shimizu T, Steigerwald S, Takano K, Yang Y, Yokota Y. First navigation with wireless muometric navigation system (MuWNS) in indoor and underground environments. iScience 2023; 26:107000. [PMID: 37534132 PMCID: PMC10391674 DOI: 10.1016/j.isci.2023.107000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 04/20/2023] [Accepted: 05/24/2023] [Indexed: 08/04/2023] Open
Abstract
Navigation in indoor and underground environments has been extensively studied to realize automation of home, hospital, office, factory and mining services, and various techniques have been proposed for its implementation. By utilizing the relativistic and penetrative nature of cosmic-ray muons, a completely new wireless navigation technique called wireless muometric navigation system (MuWNS) was developed. This paper shows the results of the world's first physical demonstration of MuWNS used on the basement floor inside a building to navigate (a person) in an area where global navigation satellite system (GNSS)/ global positioning system (GPS) signals cannot reach. The resultant navigation accuracy was comparable or better than the positioning accuracy attainable with single-point GNSS/GPS positioning in urban areas. With further improvements in stability of local clocks used for timing, it is anticipated that MuWNS can be adapted to improve autonomous mobile robot navigation and positioning as well as other underground and underwater practical applications.
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Affiliation(s)
- Hiroyuki K.M. Tanaka
- The University of Tokyo, Tokyo, Japan
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
| | - Giuseppe Gallo
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
- University of Catania, Catania, Italy
| | - Jon Gluyas
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
- Durham University, Durham, UK
| | - Osamu Kamoshida
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
- NEC Corporation, Tokyo, Japan
| | - Domenico Lo Presti
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
- University of Catania, Catania, Italy
| | - Takashi Shimizu
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
- Technoland Corporation, Tokyo, Japan
| | - Sara Steigerwald
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
| | | | | | - Yusuke Yokota
- The University of Tokyo, Tokyo, Japan
- International Virtual Muography Institute (VMI), Global, Tokyo, Japan
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Tanaka HK, Cerretto G, Gnesi I. First experimental results of the cosmic time synchronizer for a wireless, precise, and perpetual time synchronization system. iScience 2023; 26:106595. [PMID: 37192970 PMCID: PMC10182294 DOI: 10.1016/j.isci.2023.106595] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 01/15/2023] [Accepted: 04/04/2023] [Indexed: 05/18/2023] Open
Abstract
In 2022, the idea of the cosmic time synchronizer (CTS) was proposed for a precise wireless synchronization of local clocks (<100 ns). Because CTS does not require critical timing information traffic among CTS sensors, the technique can be considered robust against jamming and spoofing. In this work, a small-scale CTS sensor network has been developed and tested for the first time. Good time synchronization performances were obtained for a short-haul configuration (30-35 ns (SD, 1 σ), over 50-60 m). Based on the results of this work, CTS could be potentially conceived as a 'self-adjusting' system, offering high level continuous (perpetual) performances, to be considered either as a backup chain for GPS disciplined oscillators (GPS DO), a standalone standard for frequency and time interval measurements, or as a tool for the dissemination of reference time scales to final users, with improved characteristics in terms of robustness and reliability.
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Affiliation(s)
- Hiroyuki K.M. Tanaka
- University of Tokyo, Tokyo, Japan
- International Virtual Muography Institute, Global, Tokyo, Japan
- Corresponding author
| | - Giancarlo Cerretto
- International Virtual Muography Institute, Global, Tokyo, Japan
- Quantum Metrology and Nanotechnologies Division, Istituto Nazionale di Ricerca Metrologica, Torino, Italy
| | - Ivan Gnesi
- International Virtual Muography Institute, Global, Tokyo, Japan
- Fermi Research Center (CREF), Rome, Italy
- European Center for Nuclear Research (CERN), Geneva, Switzerland
- Istituto Nazionale di Fisica Nucleare, Frascati National Labs - Cosenza Group - Cosenza, Frascati, Italy
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Tanaka HKM, Gluyas J, Holma M, Joutsenvaara J, Kuusiniemi P, Leone G, Lo Presti D, Matsushima J, Oláh L, Steigerwald S, Thompson LF, Usoskin I, Poluianov S, Varga D, Yokota Y. Atmospheric muography for imaging and monitoring tropic cyclones. Sci Rep 2022; 12:16710. [PMID: 36202852 PMCID: PMC9537288 DOI: 10.1038/s41598-022-20039-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 09/07/2022] [Indexed: 12/04/2022] Open
Abstract
Large-scale solid bodies on Earth such as volcanoes and man-made pyramids have been visualized with solid earth muography, and the recently invented technique, acqueous muography, has already demonstrated its capability to visualize ocean tides and tsunami. In this work, atmospheric muography, a technique to visualize and monitor the vertical profile of tropic cyclones (TCs) is presented for the first time. The density distribution and time-dependent behavior of several TCs which had approached Kagoshima, Japan, has been investigated with muography. The resultant time-sequential images captured their warm cores, and their movements were consistent with the TC trails and barometric pressure variations observed at meteorological stations. By combining multidirectional muographic images with barometric data, we anticipate that muography will become a useful tool to monitor the three-dimensional density distribution of a targeted mesoscale convective system.
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Leone G, Tanaka HKM, Holma M, Kuusiniemi P, Varga D, Oláh L, Presti DL, Gallo G, Monaco C, Ferlito C, Bonanno G, Romeo G, Thompson L, Sumiya K, Steigerwald S, Joutsenvaara J. Muography as a new complementary tool in monitoring volcanic hazard: implications for early warning systems. Proc Math Phys Eng Sci 2021. [DOI: 10.1098/rspa.2021.0320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Muography uses muons naturally produced in the interactions between cosmic rays and atmosphere for imaging and characterization of density differences and time-sequential changes in solid (e.g. rocks) and liquid (e.g. melts ± dissolved gases) materials in scales from tens of metres to up to a few kilometres. In addition to being useful in discovering the secrets of the pyramids, ore prospecting and surveillance of nuclear sites, muography successfully images the internal structure of volcanoes. Several field campaigns have demonstrated that muography can image density changes relating to magma ascent and descent, magma flow rate, magma degassing, the shape of the magma body, an empty conduit diameter, hydrothermal activity and major fault lines. In addition, muography is applied for long-term volcano monitoring in a few selected volcanoes around the world. We propose using muography in volcano monitoring in conjunction with other existing techniques for predicting volcanic hazards. This approach can provide an early indication of a possible future eruption and potentially the first estimate of its scale by producing direct evidence of magma ascent through its conduit in real time. Knowing these issues as early as possible buy critically important time for those responsible for the local alarm and evacuation protocols.
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Affiliation(s)
- Giovanni Leone
- Instituto de Investigación en Astronomía y Ciencias Planetarias, Universidad de Atacama, Chile, Western South America
- Virtual Muography Institute, Global, Tokyo, Japan
| | - Hiroyuki K. M. Tanaka
- Virtual Muography Institute, Global, Tokyo, Japan
- International Muography Research Organization (MUOGRAPHIX), The University of Tokyo, Japan
- Earthquake Research Institute, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-0032, Japan
| | - Marko Holma
- Virtual Muography Institute, Global, Tokyo, Japan
- Kerttu Saalasti Institute, University of Oulu, Finland
- Muon Solutions Oy, Finland
- Arctic Planetary Science Institute, Rovaniemi, Finland
| | - Pasi Kuusiniemi
- Virtual Muography Institute, Global, Tokyo, Japan
- Muon Solutions Oy, Finland
- Arctic Planetary Science Institute, Rovaniemi, Finland
| | | | - László Oláh
- Virtual Muography Institute, Global, Tokyo, Japan
- International Muography Research Organization (MUOGRAPHIX), The University of Tokyo, Japan
- Earthquake Research Institute, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-0032, Japan
| | - Domenico Lo Presti
- Virtual Muography Institute, Global, Tokyo, Japan
- Dipartimento di Fisica e Astronomia “E. Majorana”, Universitá di Catania, Via S. Sofia 64, 95123, Italy
- Dipartimento di Fisica, Università di Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Giuseppe Gallo
- Dipartimento di Fisica, Università di Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Carmelo Monaco
- Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Universitá di Catania, Corso Italia 57, 95129 Catania, Italy
- Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, 95125 Catania, Italy
| | - Carmelo Ferlito
- Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Universitá di Catania, Corso Italia 57, 95129 Catania, Italy
- Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, 95125 Catania, Italy
| | - Giovanni Bonanno
- INAF, Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123 Catania, Italy
| | - Giuseppe Romeo
- INAF, Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123 Catania, Italy
| | - Lee Thompson
- Virtual Muography Institute, Global, Tokyo, Japan
- Department of Physics and Astronomy, University of Sheffield, UK
- Geoptic Ltd., UK
| | - Kenji Sumiya
- Virtual Muography Institute, Global, Tokyo, Japan
- Kansai University, Japan
| | | | - Jari Joutsenvaara
- Virtual Muography Institute, Global, Tokyo, Japan
- Kerttu Saalasti Institute, University of Oulu, Finland
- Muon Solutions Oy, Finland
- Arctic Planetary Science Institute, Rovaniemi, Finland
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