1. Name :  RAMANANTSOA Andry Harifidy

2. Organization: Technician, Institute and Geophysical Observatory of Antananarivo, b/P 3843, 101 - Antananarivo / Madagascar

3. Course: 2000 Sm

4. Title:  Seismic observation in Madagascar

5. Abstract:
        Madagascar occurs in intraplate context, which is presumed to be stable. It is located more than 2´000 km from the mid-ocean ridge and more than 1'000 km from the East African rift. The Observatory of Antananarivo, under the chart I.G.O.A (Institute and Geophysical Observatory of Antananarivo), especially the Seismological Laboratory undertakes the seismic observation in Madagascar. At the present time, 5 seismic stations combine to form the Malagasy Network. Vertical component short periods are the instruments used, and ISIS (Integrated Software In Seismology) is the analysis program. Madagascar has a relation with the ISC  (International Seismological Centre) and one of the signers of the Comprehensive Nuclear-Test-Ban. Installations of more efficient different instruments are the project of the organization.