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Record #92462:
- #92462
Main publication details
MARC recordCharacteristic growth processes of ice crystals on the Antarctic ice sheet / Hiroshi Nishimura, Norikazu Maeno.
| Title: | Characteristic growth processes of ice crystals on the Antarctic ice sheet / Hiroshi Nishimura, Norikazu Maeno. |
| Author(s): | Nishimura, Hiroshi. Maeno, Norikazu. |
| Date: | 1988. |
| Publisher: | Cambridge: International Glaciological Society |
| In: | Annals of Glaciology. (1988.), Vol. 11 (1988) |
| Abstract: | Crystal size in snow was measured in 30 m snow cores drilled at four sites on Mizuho Plateau, and regional differences were examined with special reference to temperature-gradient layer. Growth rate of crystals in temperature-gradient layer above 6 m was much larger than that in isothermal layer below 10 m. However, apparent activation energy was much smaller in temperature-gradient layer. Using temperature profiles in snow that were estimated from meteorological data from several stations, growth rates in temperature-gradient layer were calculated. Calculated temperature dependence of growth rates, taking into consideration vertical flux of water vapour between ice particles caused by temperature gradient, showed good agreement with measured results. Concludes that growth process in layer above 6 m is mainly due to vapour transport under vertical temperature gradient. |
| Notes: | Annals of Glaciology. Vol. 11 :104-108 (1988). |
| Keywords: | 551.578.46 -- Snow cover and snow patches. 548.5 -- Ice crystals. E10 -- Glaciology: snow and avalanches. (*7) -- Antarctic regions. (*73) -- Dronning Maud Land. |
| SPRI record no.: | 92462 |
LDR 01763naa#a2200000#a#4500 001 SPRI-92462 005 20240419030119.0 007 ta 008 240419s1988####enkab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-92462 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aNishimura, Hiroshi. 245 10 ‡aCharacteristic growth processes of ice crystals on the Antarctic ice sheet /‡cHiroshi Nishimura, Norikazu Maeno. 260 ## ‡aCambridge :‡bInternational Glaciological Society,‡c1988. 300 ## ‡ap. 104-108 :‡bdiags., map. 500 ## ‡aAnnals of Glaciology. Vol. 11 :104-108 (1988). 520 3# ‡aCrystal size in snow was measured in 30 m snow cores drilled at four sites on Mizuho Plateau, and regional differences were examined with special reference to temperature-gradient layer. Growth rate of crystals in temperature-gradient layer above 6 m was much larger than that in isothermal layer below 10 m. However, apparent activation energy was much smaller in temperature-gradient layer. Using temperature profiles in snow that were estimated from meteorological data from several stations, growth rates in temperature-gradient layer were calculated. Calculated temperature dependence of growth rates, taking into consideration vertical flux of water vapour between ice particles caused by temperature gradient, showed good agreement with measured results. Concludes that growth process in layer above 6 m is mainly due to vapour transport under vertical temperature gradient. 650 07 ‡a551.578.46 -- Snow cover and snow patches.‡2udc 650 07 ‡a548.5 -- Ice crystals.‡2udc 650 07 ‡aE10 -- Glaciology: snow and avalanches.‡2local 651 #7 ‡a(*7) -- Antarctic regions.‡2udc 651 #7 ‡a(*73) -- Dronning Maud Land.‡2udc 700 1# ‡aMaeno, Norikazu. 773 0# ‡7nnas ‡tAnnals of Glaciology. ‡gVol. 11 (1988) ‡wSPRI-60773 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240419