engleski

Real-time and delayed monitoring of a meteotsunami: Is it possible to build an efficient meteotsunami warning system?

Proper monitoring of a meteotsunami is demanding non-standard meteorological and oceanographic measurements, with sampling resolution on a minute scale or even denser. That directs the problem similar to the general problem of monitoring of a tsunami, including the warning efficiency issues. Two ways are presently eligible for the development of a meteotsunami warning system: (i) monitoring of the synoptic conditions and trying to assess the characteristic atmospheric fields over the wider area, and/or (ii) monitoring of high-resolution atmospheric and oceanographic data in real-time, and rapid assessment of the probability for fulfilling a number of meteotsunami conditions (proper speed, direction, intensity and coherence of an air pressure high-resolution disturbance). The first warning system is already in place on Balearic Islands, which issues day-to-day rissaga warnings when (1) low level Mediterranean air with weak surface depression is over the Baleares ; (2) warmer African air blows around 850 hPa isobaric surface ; (3) an inversion layer separates (1) and (2) ; and (4) an unstable layer is present between the African air and colder upper air. The second approach demands a network of real-time microbarographs and pressure/coastal tide gauges, and development of a procedure/algorithm for detection and assessment of the atmospheric/ocean meteotsunami waves, similar as done for tsunamis (e.g. within DART system for real-time tsunami monitoring and assessment in the Pacific Ocean). A proposal for such a network for the middle Adriatic will be given in the presentation.

Meteotsunami; Real-time measurements; Warning system

nije evidentirano