EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Infrasound Signatures of Mediterranean Hurricanes

Edouard Forestier1,2, Constantino Listowski1, Stavros Dafis3,5, Alexis Le Pichon1, Thomas Farges1, Marine De Carlo4, Julien Vergoz1, and Chantal Claud5
Edouard Forestier et al.
  • 1CEA/DAM/DIF, F-91297, Arpajon, France
  • 2ENSTA Paris - École Nationale Supérieure de Techniques Avancées, Palaiseau, France
  • 3Institute for Environmental Research, National Observatory of Athens, Athens, Greece
  • 4University of Brest, CNRS, LOPS, Brest, France
  • 5LMD/IPSL, CNRS, École Polytechnique, Palaiseau, France

Mediterranean hurricanes, or medicanes, are tropical-like cyclones forming once or twice per year essentially over the waters of Mediterranean Sea. These mesocyclones pose a serious threat to coastal infrastructures and lives, because of their strong winds and intense rainfalls. Infrasound technology has already been employed to investigate acoustic signatures of severe weather events. In order to characterize medicane infrasound detections, we use data from the International Monitoring System (IS48 infrasound station, Tunisia), processed with a multi-channel correlation algorithm. For four different medicanes, high and/or low frequency detections are corresponding to these events, and non-detected cases are also discussed. These detections are discussed by considering other datasets such as satellite observations, a surface lightning detection network, and products mapping the intensity of the swell. While convective systems and lightning seem to be the main sources of detections above 1 Hz, hotspots of swell related to the medicanes are evidenced in the 0.1-0.5 Hz range.

How to cite: Forestier, E., Listowski, C., Dafis, S., Le Pichon, A., Farges, T., De Carlo, M., Vergoz, J., and Claud, C.: Infrasound Signatures of Mediterranean Hurricanes, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-3907,, 2022.