isoceraunic line

A line drawn through geographical points at which some phenomenon connected with thunderstorms has the same frequency or intensity; used for lines of equal frequency of lightning discharges.

Related terms:

• isoceraunic
• isanomalous line
• isotimic line
• Contour Line
• height-change line
• isopachous line
• isogonic line
• isodynamic line
• thickness line
• instability line