Spectral response of atmospheric electric field measurements near AC high voltage power lines

[摘要] To understand the influence of corona ion emission on the atmospheric electrical field, measurements were made near to two AC high voltage power lines. A JCI 131 field-mill recorded the atmospheric electric field over one year. Meteorological measurements were also taken. The data series is divided in four zones (dependent on wind direction): whole zones, Z0; zone 1, Z1; zone 2, Z2; zone 3, Z3. Z3is the least affected by corona ion emission and for that reason it is used as a reference against Z1and Z2, which are strongly influenced by this phenomena. Analysis was undertaken for all weather days and dry days only. The Lomb-Scargle strategy developed for unevenly spaced time-series is used to calculate the spectral response of the aforementioned zones. Only frequencies above 1 minute are considered.

[发布机构] Atmospheric Chemistry Research Group, University of Bristol, Cantock's Close, Bristol; BS8 ITS, United Kingdom^1;Departamento de Fásica, ECT, Instituto de Ciências da Terra, IIFA, Universidade de Évora, Rua Romão Ramalho 59, Évora; 7002-554, Portugal^2

[效力级别] 数学

[关键词] Atmospheric electric field;Electrical field;High-voltage power line;Ion emissions;Meteorological measurements;Spectral response;Unevenly-spaced time series;Wind directions