Katsumi Hirose

Summary

Affiliation: University of Tsukuba
Country: Japan

Publications

  1. doi request reprint Temporal variation of monthly (137)Cs deposition observed in Japan: Effects of the Fukushima Daiichi nuclear power plant accident
    Katsumi Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioicho, Chiyodaku, Tokyo 102 8554, Japan Geosphere Research Institute, Saitama University, 255 Shimo okubo, Sakura ku, Saitama 338 8570, Japan Electronic address
    Appl Radiat Isot 81:325-9. 2013
  2. doi request reprint 2011 Fukushima Dai-ichi nuclear power plant accident: summary of regional radioactive deposition monitoring results
    Katsumi Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioicho, Chiyodaku, Tokyo 102 8554, Japan
    J Environ Radioact 111:13-7. 2012
  3. doi request reprint Temporal variation and provenance of thorium deposition observed at Tsukuba, Japan
    Katsumi Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioichou Chiyodaku, Tokyo, Japan
    J Environ Radioact 108:24-8. 2012
  4. doi request reprint 210Pb deposition in the far East Asia: controlling factors of its spatial and temporal variations
    K Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioicho, Chiyodaku, Tokyo 102 8554, Japan
    J Environ Radioact 102:514-9. 2011
  5. doi request reprint Depositional behaviors of plutonium and thorium isotopes at Tsukuba and Mt. Haruna in Japan indicate the sources of atmospheric dust
    K Hirose
    Meteorological Research Institute, Geochemical Research Department, Nagamine 1 1, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Radioact 101:106-12. 2010
  6. ncbi request reprint Resuspension: decadal monitoring time series of the anthropogenic radioactivity deposition in Japan
    Yasuhito Igarashi
    Geochemical Research Department, Meteorological Research Institute, Ibaraki, Japan
    J Radiat Res 44:319-28. 2003
  7. doi request reprint Analysis of 50-y record of surface (137)Cs concentrations in the global ocean using the HAM-global database
    Yayoi Inomata
    Geochemical Research Department, Meteorological Research Institute, Tsukuba, Ibaraki, 305 0052, Japan
    J Environ Monit 11:116-25. 2009
  8. doi request reprint 239,240Pu/137Cs ratios in the water column of the North Pacific: a proxy of biogeochemical processes
    Katsumi Hirose
    Geochemical Research Department, Meteorological Research Institute, Nagamine 1 1, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Radioact 100:258-62. 2009
  9. doi request reprint Return period of enhanced gamma ray dose rates: regional differences observed in Japan
    Yayoi Inomata
    Geochemical Research Department, Meteorological Research Institute, 1 1 Nagamine, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Monit 10:837-41. 2008
  10. ncbi request reprint Artificial radionuclides database in the Pacific Ocean: HAM database
    Michio Aoyama
    Geochemical Research Department, Meteorological Research Institute, Nagamine 1 1, Tsukuba, Ibaraki 305 0052, Japan
    ScientificWorldJournal 4:200-15. 2004

Collaborators

Detail Information

Publications15

  1. doi request reprint Temporal variation of monthly (137)Cs deposition observed in Japan: Effects of the Fukushima Daiichi nuclear power plant accident
    Katsumi Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioicho, Chiyodaku, Tokyo 102 8554, Japan Geosphere Research Institute, Saitama University, 255 Shimo okubo, Sakura ku, Saitama 338 8570, Japan Electronic address
    Appl Radiat Isot 81:325-9. 2013
    ..Second peaks of the monthly (137)Cs deposition occurred in February-April 2012, which may be supported by resuspension of (137)Cs bearing particles. ..
  2. doi request reprint 2011 Fukushima Dai-ichi nuclear power plant accident: summary of regional radioactive deposition monitoring results
    Katsumi Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioicho, Chiyodaku, Tokyo 102 8554, Japan
    J Environ Radioact 111:13-7. 2012
    ..The temporal change of the Fukushima-derived (137)Cs revealed that the apparent atmospheric residence time of the Fukushima-derived (137)Cs in sites within 300 km from the Fukushima Dai-ichi NPPis about 10 d...
  3. doi request reprint Temporal variation and provenance of thorium deposition observed at Tsukuba, Japan
    Katsumi Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioichou Chiyodaku, Tokyo, Japan
    J Environ Radioact 108:24-8. 2012
    ..Annual (232)Th deposition exhibited an increasing trend, suggesting the presence of sources other than soil dust such as fly ash from increasing coal burning...
  4. doi request reprint 210Pb deposition in the far East Asia: controlling factors of its spatial and temporal variations
    K Hirose
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7 1 Kioicho, Chiyodaku, Tokyo 102 8554, Japan
    J Environ Radioact 102:514-9. 2011
    ..The (210)Pb concentration in rainwater showed long-term variability, although this differed between winter and summer. This long-term variability may be related to climatological factors such as El NiƱo...
  5. doi request reprint Depositional behaviors of plutonium and thorium isotopes at Tsukuba and Mt. Haruna in Japan indicate the sources of atmospheric dust
    K Hirose
    Meteorological Research Institute, Geochemical Research Department, Nagamine 1 1, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Radioact 101:106-12. 2010
    ..The results revealed that a major proportion of total (239,240)Pu and Th deposits are derived from remote sources, especially in spring...
  6. ncbi request reprint Resuspension: decadal monitoring time series of the anthropogenic radioactivity deposition in Japan
    Yasuhito Igarashi
    Geochemical Research Department, Meteorological Research Institute, Ibaraki, Japan
    J Radiat Res 44:319-28. 2003
    ..We need to study the fate of long-lived anthropogenic radioactivity dispersed in the environment over greater spatial and temporal scales...
  7. doi request reprint Analysis of 50-y record of surface (137)Cs concentrations in the global ocean using the HAM-global database
    Yayoi Inomata
    Geochemical Research Department, Meteorological Research Institute, Tsukuba, Ibaraki, 305 0052, Japan
    J Environ Monit 11:116-25. 2009
    ..These results suggest that (137)Cs in the North Pacific Ocean is transported to the equatorial, South Pacific, and Indian Oceans by the oceanic circulation...
  8. doi request reprint 239,240Pu/137Cs ratios in the water column of the North Pacific: a proxy of biogeochemical processes
    Katsumi Hirose
    Geochemical Research Department, Meteorological Research Institute, Nagamine 1 1, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Radioact 100:258-62. 2009
    ..A half-regeneration depth deduced from the curve fitting the observed data, showed latitudinal and longitudinal distributions, also related to biogeochemical processes in the water column...
  9. doi request reprint Return period of enhanced gamma ray dose rates: regional differences observed in Japan
    Yayoi Inomata
    Geochemical Research Department, Meteorological Research Institute, 1 1 Nagamine, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Monit 10:837-41. 2008
    ..The expected return period for the maximum Delta gamma at each site was about 10 years. This estimation of the return period of Delta gamma is a novel approach to the study of environmental science in fields such as radioactivity...
  10. ncbi request reprint Artificial radionuclides database in the Pacific Ocean: HAM database
    Michio Aoyama
    Geochemical Research Department, Meteorological Research Institute, Nagamine 1 1, Tsukuba, Ibaraki 305 0052, Japan
    ScientificWorldJournal 4:200-15. 2004
    ..Furthermore, these radionuclides can be used to verify the oceanic general circulation models in the time scale of several decades...
  11. ncbi request reprint Spatial and temporal variations of atmospheric 85Kr observed during 1995-2001 in Japan: estimation of atmospheric 85Kr inventory in the Northern Hemisphere
    Michio Hirota
    Meteorological Research Institute, Ibaraki, Japan
    J Radiat Res 45:405-13. 2004
    ..The global atmospheric inventory of 85Kr in December 2001 was also estimated to be approximately 5 EBq by using observed data in Tsukuba...
  12. ncbi request reprint Present background levels of surface 137Cs and (239,240)Pu concentrations in the Pacific
    Katsumi Hirose
    Geochemical Research Department, Meteorological Research Institute, Nagamine 1 1, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Radioact 69:53-60. 2003
    ....
  13. ncbi request reprint Re-construction and updating our understanding on the global weapons tests 137Cs fallout
    Michio Aoyama
    Geochemical Research Department, Meteorological Research Institute, 305 0052, Japan
    J Environ Monit 8:431-8. 2006
    ..Our new estimate of 765 +/- 79 PBq as global 137Cs fallout for the northern hemisphere is 1.4 times higher than that of 545 PBq in the UNSCEAR reports...
  14. ncbi request reprint Recent trends of plutonium fallout observed in Japan: plutonium as a proxy for desertification
    Katsumi Hirose
    Geochemical Research Department, Meteorological Research Institute, 1 1 Nagamine, Tsukuba, Ibaraki 305 0052, Japan
    J Environ Monit 5:302-7. 2003
    ..The recent increased tendency of (239,240)Pu content in residues in deposition samples may reflect desertification in the East Asian continent...
  15. ncbi request reprint Chemical speciation of thorium in marine biogenic particulate matter
    Katsumi Hirose
    Geochemical Research Department, Meteorological Research Institute, 1 1 Nagamine, Tsukuba, Ibaraki 305 0052, Japan
    ScientificWorldJournal 4:67-76. 2004
    ..Our findings suggest that the SOL in PM is a nonmetal-specific chelator originating from the cell surface of microorganisms...