Jökull


Jökull - 01.12.1970, Page 93

Jökull - 01.12.1970, Page 93
Alþjóðaráðstefna um ís í Reykjavík 1970 Alþjóðasamband um straumfræðirannsóknir, International Association for Hydraulic Re- search var stofnað í Briissel 1935. Þetta eru sjálfstæð samtök verkfræðinga og vísindamanna til að stuðla að framförum á öllum sviðum vatna- og straumfræðirannsókna, hagnýtra og fræðilegra. Sambandið hefur til þessa haldið 13 alþjóðaþing, og eru þau nú haldin annað hvert ár. Það gefur út tímarit, skýrslur um starfsemi rannsóknarstofnana í straumfræði, skýrslur um þing og ráðstefnur o. fl. Til nánari samvinnu á einstökum sviðum hafa verið stofnaðar átta tækninefndir innan I.A.H.R.: 1. Committee on Hydraulic Machinery, Equip- ment and Cavitation 2. Committee on Ice Problems 3. Committee on Maritime Hydraulics 4. Committee on Flow through Porous Media 5. Committee on Fluvial Hydraulics 6. Committee on Polyphase Fluids 7. Committee on Fundamentals 8. Committee on Water Resources Systems Sumar þessara nefnda hafa haldið ráðstefnur milli þinga I.A.H.R. Nefnd um ísvandamál hélt fyrstu ráðstefnu sína, sem fjallaði urn ís og áhrif íss á mannvirki, í Reykjavík 8.—10. september 1970. Þátttakendur voru 114 frá 15 löndum og 14 af konum þátttakenda að auki. Fundir voru haldnir í Hagaskóla. Eftirtalin er- indi voru flutt eða kynnt á ráðstefnunni: INAUGURATION LECTURE Rist, S.: River and coastal ice problems in Iceland. Session 1 ICE TERMINOLOGY AND MEASURE- MENTS Kivisild, H. R.: River and lake ice terminology. Kristinsson, B.: Ice monitoring equipment. Kennedy, J. F.: The Iowa low temperature flow facility. Arden, R. S.: Instrumentation for ice investigations in the Niagara River. Ohashi, K., Hamada, T.: Flow measurements of ice-covered rivers on Hokkaido. Session 2 ICE FORMATION AND PROPERTIES Carstens, T.: Heat exchanges and frazil formation. Freysteinsson, S.: Calculation of frazil ice production. Yamaoka, I.: Estimation of incipient ice cover formation date of reservoirs in Hokkaido by use of a time series of daily accumulated air tempera- ture. Lazier, S. S., Metge, M.: Temperature gradients in a lake ice cover. Ashton, G. D., Kennedy, J. F.: Temperature a,nd flow conditions during the formation of river ice. Balanin, V. V.: Effects of ice water intakes including the design of ice free channels. Borodkin, B. S.: Calculation of water temperature variation along a channel of great length with varying flow conditions. Pekhovich, A. I., Aleinikov, S. M., Zhidkikh, V. M.: Winter thermal regime of non-freezing canals and control of ice troubles due to water level fluctuations. Votruba, L., Matousek, V.: L’assurance de l’alimentation ininterrompue par l’amenée d’eau ouverte en hiver. JÖKULL 20. ÁR 91

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