Monitoring of lightning from the April–May 2010 Eyjafjallajökull volcanic eruption using a very low frequency lightning location network

The April–May 2010 explosive eruption of the Eyjafjallajökull volcano in Iceland produced a tephra plume extending to an altitude of over 9 km. During many, but not all, of the periods of significant volcanic activity the plume was sufficiently electrified to generate lightning. This lightning was located by the UK Met Office long-range lightning location network (ATDnet), operating in the very low frequency radio spectrum. An approximately linear relationship between hourly lightning count rate and radar-derived plume height was found. A minimum plume height for lightning generation of sufficient strength to be detected by ATDnet was shown to be 5 km above sea level. It is not clear why some plumes exceeding 5 km did not produce lightning detected by ATDnet, although ambient atmospheric conditions may be an important factor.

[1]  E. Williams,et al.  Volcanic lightning: global observations and constraints on source mechanisms , 2010 .

[2]  Guðrún Nína Petersen,et al.  A short meteorological overview of the Eyjafjallajökull eruption 14 April–23 May 2010 , 2010 .

[3]  K. Nicoll,et al.  Experimental determination of layer cloud edge charging from cosmic ray ionisation , 2010 .

[4]  Z. Ulanowski,et al.  Self-charging of the Eyjafjallajökull volcanic ash plume , 2010 .

[5]  T. Shinbrot,et al.  Why do particle clouds generate electric charges , 2010, 1003.5188.

[6]  R. Harrison,et al.  Evidence for global circuit current flow through water droplet layers , 2009 .

[7]  R. S. Martin,et al.  Electrical Charging of Volcanic Plumes , 2008 .

[8]  H. Edens,et al.  Electrical Activity During the 2006 Mount St. Augustine Volcanic Eruptions , 2007, Science.

[9]  T. Mather,et al.  Electrification of volcanic plumes , 2006 .

[10]  T. Jónsson,et al.  Forecasting and monitoring a subglacial eruption in Iceland , 2005 .

[11]  Gerhard Diendorfer,et al.  Cloud-to-ground lightning in Austria : a 10-year study using data from a lightning location system , 2005 .

[12]  E. Williams,et al.  Total Water Contents in Volcanic Eruption Clouds and Implications for Electrification and Lightning , 2004 .

[13]  William I. Rose,et al.  Weather radar observations of the Hekla 2000 eruption cloud, Iceland , 2004 .

[14]  H. Christian Global Frequency and Distribution of Lightning as Observed From Space , 2001 .

[15]  Stephen R. McNutt,et al.  Lightning associated with the 1992 eruptions of Crater Peak, Mount Spurr Volcano, Alaska , 2000 .

[16]  Kenneth L. Cummins,et al.  A Combined TOA/MDF Technology Upgrade of the U.S. National Lightning Detection Network , 1998 .

[17]  R. Hoblitt An experiment to detect and locate lightning associated with eruptions of Redoubt Volcano , 1994 .

[18]  Anthony C. L. Lee,et al.  An Operational System for the Remote Location of Lightning Flashes Using a VLF Arrival Time Difference Technique , 1986 .

[19]  R. Serneels,et al.  Extension of the Yoshioka theory of inelastic electron scattering in crystals , 1980 .

[20]  C. Srivastava The propagation of a radio atmospheric , 1956 .

[21]  A. Lorenc,et al.  The Met Office global four‐dimensional variational data assimilation scheme , 2007 .

[22]  P. Arason,et al.  Volcanogenic lightnings during a sub-glacial eruption in Iceland , 2000 .

[23]  S. Brantley,et al.  The eruption of Redoubt Volcano, Alaska, December 14, 1989-August 31, 1990 , 1990 .

[24]  K. G. Budden I. The propagation of a radio-atmospheric , 1951 .