Title Simulating wet snow loads on power line cables by a simple model
Author Makkonen, L.; Wichura, B.
Author Affil Makkonen, L., VTT Technical Research Centre of Finland, Espoo, Finland. Other: German Meteorological Service, Germany
Source Cold Regions Science and Technology, 61(2-3), p.73-81, . Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0165- 232X
Publication Date May 2010
Notes In English. Based on Publisher- supplied data GeoRef Acc. No: 309579
Index Terms precipitation (meteorology); damage; ice; models; power lines; snow; storms; wet snow; Germany--Muensterland; accretion; atmospheric precipitation; Central Europe; Europe; Germany; Muensterland; natural hazards; North Rhine-Westphalia Germany; snow storms
Abstract A wet snow event in the northwest part of Germany caused extensive damage to electric power lines in November 2005. Maximum wet snow loads of approximately 50 Nm-1 were estimated by evaluating the snow deposit diameter from photographs and the snow density from meteorological data. A simple wet snow accretion model was applied to reconstruct the snow accretion process. The maximum wet snow loads estimated by the model are in good agreement with the observations when the model input parameter, visibility, was adjusted by a constant factor for night- time observations. The improved wet snow accretion model was also applied to historical weather data for the area demonstrating the power and weaknesses of the extreme value analysis of wet snow events.
URL http://hdl.handle.net/10.1016/j.coldregions.2010.01.008
Publication Type journal article
Record ID 65006529