The helicopter-triggered lightning strike phenomenon has been found to occur during operations over the North Sea between November and early April when there is usually little or no natural lightning activity in progress at the time.

2015年2月9日 · Each year a small number of helicopters working in the North Sea oil and gas sector are struck by lightning. It is an unpleasant experience for those on board but thankfully improvements in...

Upward triggered lightning usually occurs in response to a natural lightning flash, but on rare occasions can be “self-triggered”—usually in winter storms with strong winds. Lightning can also be triggered by aircraft flying through strong electric fields.

2022年1月24日 · What happens exactly when lightning hits an aircraft, and what is the phenomena where lighting is actually caused by the airframe rather than the atmosphere by itself? This is called triggered lightning and does present a huge threat to, for instance, the UK offshore helicopter industry ⚡️

We define triggered lightning as lightning that is caused by some human modification ot the natural atmospheric environment. This definition excludes lightning that has been occasionally reported as occurring in dust-storms, in snow-blizzards, within the clouds above a6tive volcanoes, and in association with earthquakes.

2012年3月30日 · A triggered lightning strike occurred at 0840 UTC close to Aberdeen airport. A cold front had recently passed over the UK, bringing strong northerly winds behind it, leading to heating of the air by the relatively warm North Sea.

What is helicopter-triggered lightning? •Wintertime, North-Sea Phenomena. Occurs October-early April. •Quite rare (1-4 strikes per year; about 100 helicopter movements from Aberdeen per day). •Helicopter encounters lightning where lightning was not observed/expected. •In most cases, it is thought that the helicopter

2016年8月1日 · Classical and altitude rocket-and-wire techniques for triggering lightning are described. Various characteristics of triggered lightning derived from measurements of current at the lightning channel base and from close electric and magnetic field records are reviewed.

2011年2月28日 · As opposed to cooling the Earth, black-carbon aerosols exert the second largest human-induced warming, after carbon dioxide. And aerosols were found to change the …

2025年1月8日 · Helicopter flights transporting off-shore workers across the North Sea have been grounded due to triggered lightning. The severe weather causes disruption for all major helicopter operators as...