CTBT: Science and Technology Conference 2023 - SnT2023

Relation Between Infrasound and Rainfall

O1.1-442

22 Jun 2023, 16:55

15m

Prinz Eugen Saal

Oral T1.1 The Atmosphere and its Dynamics O1.1 The Atmosphere and its Dynamic

Speaker

Andry Harifidy Ramanantsoa (Institute and Observatory of Geophysics of Antananarivo (IOGA))

Description

A thunderstorm is a well-known and permanent source of infrasound events. Infrasound signal propagation is known as well to be dictated by atmospheric parameters like temperature and wind. In a tropical region like Madagascar, rainfall pattern is one possible technique used to explain seasonal variation of International Monitoring System infrasound network detectability. In this study, 20 years of I33MG infrasonic station bulletin was correlated to rainfall data. Infrasound bulletin is obtained from DTKPMCC software in NIAB collection, atmospheric variations are derived from ECMWF ERA5 data and precipitation data are from the local meteorological service of Madagascar. Observation of rainfall as well as infrasound bulletin from 2003 to 2022 shows a correlation between precipitation and infrasound events.

Promotional text

This work aims to emphasize the expertise of NDC, the scientific impacts in the society of infrasound technology and the impact of infrasound on daily life.

Presentation materials

O1-1-442-Ramanantsoa.mp4

O1.1-442_.Ramanantsoa.pptx