Seasonal Variation of Frequency of High Current Lightning Discharges Observed by JLDN
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- Saito Mikihisa
- The University of Tokyo
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- Ishii Masaru
- The University of Tokyo
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- Fujii Fumiyuki
- The University of Tokyo
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- Matsui Michihiro
- Franklin Japan Corporation
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Seasonal variations of number of high current lightning discharges exceeding 100kA observed by JLDN (Japanese Lightning Detection Network) were analyzed. The months with averaged altitudes of -10°C level higher than 5.7km are classified as ordinary summer from the viewpoint of lightning activity. Meanwhile, on the coast of the Sea of Japan, more than 90% of negative high current lightning discharges were -GC (Ground to Cloud) strokes in the months when monthly averaged altitudes of -10°C level are lower than 2.7km. These months are classified as the winter lightning season when upward lightning flashes frequently occur. Months other than winter or summer are classified as spring or autumn. In these seasons, the proportions of positive high current lightning discharges are higher than those of negative discharges like winter. Thus, the charge structure in the thunderclouds of spring and autumn may be similar to that in winter, and high current lightning strokes tend to occur. Since this variation of seasons is different in each area of Japan, relation of seasons, areas, and densities of high current lightning discharges were analyzed.
収録刊行物
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- 電気学会論文誌B(電力・エネルギー部門誌)
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電気学会論文誌B(電力・エネルギー部門誌) 132 (6), 536-541, 2012
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390282679579753984
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- NII論文ID
- 10030605624
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- NII書誌ID
- AN10136334
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- BIBCODE
- 2012IJTPE.132..536S
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- ISSN
- 13488147
- 03854213
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- NDL書誌ID
- 023824560
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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