Japan Geoscience Union Meeting 2016

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Poster

Symbol A (Atmospheric and Hydrospheric Sciences) » A-CC Cryospheric Sciences & Cold District Environment

[A-CC20] Glaciology

Wed. May 25, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Tetsuo Ohata(Arctic Environment Research Center, National Institute of Polar Research), Masahiro Hori(Earth Observation Reseacrh Center, Japan Aerospace Exploration Agency), kazuyoshi suzuki(Japan Agency for Marine-Earth Science and Technology), Shin Sugiyama(Institute of Low Temperature Science, Hokkaido University)

5:15 PM - 6:30 PM

[ACC20-P03] Movement analysis of curling stone

*Katsutoshi Tusima, Katsunori Mori

Keywords:curling, ice, curl

youtube on curling world championship was analyzed. curl distance c, angle of spin n and sliding distance s are measured as a function of sliding time t. in initial stage, stone went to linearly, and curl started at middle stage in the neighborhood of 12 second before stop. curl distance (lateral displacement) increased linearly to sliding time t, reached abut 1 m at end. stone turned at 6 to 10 second as increasing time with sliding. coefficient of friction for spin was extremely small and estimated to order of 0.0001 to 0.00001. coefficient of friction f was value of 0.009 to 0.02 with increasing as decreasing velocity. curves c-s, f-s and f-v were derived.