Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Hirofumi Niiya"'
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-14 (2020)
Abstract The formation of aggregates consisting of snow, water, and tephra has been reported in small-scale experiments on three-phase flows containing tephra, water, and snow, representing lahars triggered by snowmelt. Such aggregates reduce the mob
Externí odkaz:
https://doaj.org/article/e3e6f9058d124b799270e0aad3ca8870
Publikováno v:
PLoS ONE, Vol 14, Iss 5, p e0215743 (2019)
The diameter and vertical depth of sand crab tunnels in sandy beaches are usually restricted to a few centimeters scale and several tens of centimeters, respectively. We designed a study to determine what physical factors restrict tunnel diameter and
Externí odkaz:
https://doaj.org/article/9dbd4529a94848aabf51c3d22bf1b55b
Publikováno v:
Geosciences, Vol 10, Iss 2, p 69 (2020)
To understand the time evolutions of frontal speed and shape in a low-density granular flow, we propose a simple particle model. This model solves the equation of motion for each particle and simulates the time evolution of low-density granular flow.
Externí odkaz:
https://doaj.org/article/ee89ef67ee024bf9a5208d644d2b2cb9
Publikováno v:
New Journal of Physics, Vol 21, Iss 2, p 023001 (2019)
Resistance force acting on a rod vertically withdrawn from a granular layer is studied by experiments and numerical simulations. The initial packing fraction of the granular layer is controlled to evaluate the packing dependence of the resistance for
Externí odkaz:
https://doaj.org/article/07358ec2aaa04a01a53f1fef3e61d8f9
Autor:
Graham Lewis Gilbert, Kjersti Gleditsch Gisnås, Anders Solheim, Tae-Hyuk Kwon, Satoru Yamaguchi, Yoichi Ito, Joon-Young Park, Ryoko Nishii, Hirofumi Niiya, Louise Vick
The international partnership GEOMME seeks to develop collaborative activities in research and education on climate-induced geohazards in South Korea, Japan, and Norway. The partnership focuses on excellence in education and research to increase soci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f4160d1ccd237a706494d356feac672
https://doi.org/10.5194/egusphere-egu23-17227
https://doi.org/10.5194/egusphere-egu23-17227
Publikováno v:
Journal of the Japanese Society of Snow and Ice. 84:213-227
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e2ca1a6e686ef58de35238fd0ccfb42
https://doi.org/10.5331/seppyo.84.3_213
https://doi.org/10.5331/seppyo.84.3_213
Autor:
Hirofumi Niiya, Kouichi Nishimura
Publikováno v:
Boundary-Layer Meteorology. 183:447-467
Surface shear stresses produced by wind and particle collision play a key role in aerodynamic entrainment and splash processes. The fluid shear stress at the surface during aeolian transport has been researched for decades; however, the equilibrium p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7255699c98dd3f39903c8d09d8271ac
https://doi.org/10.1007/s10546-022-00688-8
https://doi.org/10.1007/s10546-022-00688-8
Publikováno v:
Journal of the Japanese Society of Snow and Ice. 83:259-273
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33e3614bf1a8324c4e3b7b311c605fc3
https://doi.org/10.5331/seppyo.83.3_259
https://doi.org/10.5331/seppyo.83.3_259
Publikováno v:
Journal of the Society of Powder Technology, Japan. 56:194-202
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a87f41894982b710cd5cba68e7a8e0f4
https://doi.org/10.4164/sptj.56.194
https://doi.org/10.4164/sptj.56.194
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-14 (2020)
The formation of aggregates consisting of snow, water, and tephra has been reported in small-scale experiments on three-phase flows containing tephra, water, and snow, representing lahars triggered by snowmelt. Such aggregates reduce the mobility of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba8ea6df4d6046ef1940329af14bd50e
https://doi.org/10.1186/s40623-020-01289-w
https://doi.org/10.1186/s40623-020-01289-w