PARLIAMENT QUESTION: SEISMOGRAPH NETWORK

• National Seismological Network (NSN) is India's backbone earthquake-monitoring grid of 170 observatories operated by the National Centre for Seismology (NCS) under the Ministry of Earth Sciences (MoES).
• Stations carry broadband seismographs + strong motion accelerographs; data streams in real time to the Earthquake Monitoring Centre, New Delhi via VSAT.
• Relevance: GS-III (Disaster Management, S&T) — connects seismic-zone classification (IS 1893 Part-1: 2016), earthquake preparedness, and the geomorphology of the Himalayan/peninsular seismic belts.