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Estimation of Near-Surface Seismic Characterisation from the Supertech Twin Towers Demolition at Noida City, National Capital Region of Delhi, India.

Kumar P, Mandal B, Dalai B, Laxminarayana K, Karuppannan P, Kumar NP, Singh S, Ginkala Tejaswi.

Journal of the Geological Society of India

http://dx.doi.org/10.17491/jgsi/2025/174176 

In a remarkable scientific effort, CSIR - NGRI actively participated in seismological data acquisition during the historic demolition of the Supertech Twin Towers in Noida. The team successfully deployed 3-component geophones and strong motion accelerographs (SMA) to record critical seismic data during the event. It is a matter of pride that the results of this one-of-a-kind study have now been published in the Journal of the Geological Society of India (JGSI) Special Volume. This groundbreaking work showcases CSIR-NGRI’s commitment to scientific excellence and its role in applying geophysical research to real-world scenarios. The controlled demolition of the Supertech Twin Towers provided a valuable data on ground motion characteristics.

(a) Demolition of the Twin Towers, (b) Raw acceleration data from station C0 (~220m from the Demolition site).

(a) Complex accelerogram from station E0. (b) Time-frequency representation via CWT reveals intricate frequency content. (c) PCA-based feature transformation, where PC1 (56.85%) and PC2 (29.91%) capture most of the variance. (d) DBSCAN clustering categorizes four types of vibrations. Cluster centres, marked with ‘x’, indicate distinct vibration types in the transformed space.

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