Dr. Nirmala Vasudevan currently serves as Associate Professor at Amrita Center for Wireless Networks and Applications (AmritaWNA). Her areas of Interest include Landslides, Neutrino Phenomenology, Supersymmetry and Grand Unification.


Amrita Vishwa Vidyapeetham

18 December 2006
WINSOC project 9 July 2007 

PHONE NUMBER : (91) 944 749 8832


The Deployment of Deep-Earth Sensor Probes for Landslide Detection. In Press: Landslides DOI: 10.1007/s10346-011-0300-

Neutrino Phenomenology of Very Low-Energy Seesaws. Published in Phys. Rev. D 75: 013003, 2007.

The Phase Transition SUSY SU(5) → SUSY SU(3) × SU(2) × U(1). Ph.D. Thesis


Publication Type: Conference Paper

Year of Publication Publication Type Title


Conference Paper

Dr. Nirmala Vasudevan and Ramanathan, K., “Geological factors contributing to landslides: Case studies of a few landslides in different regions of India”, in IOP Conference Series: Earth and Environmental Science, 2016, vol. 30.[Abstract]

Landslides - mass movements of rock, debris or earth down a slope - are worldwide phenomena which cause significant damage and an estimated 5000 fatalities each year. They are caused by the interplay of various natural and anthropogenic factors and occur under diverse geoenvironmental conditions. In India, landslides occur primarily in the Himalayas of North India and in the Western Ghats of South India. This paper reports the results of field investigations for six landslide sites in North, Northeast and South India. We provide explanations as to why several landslides occurred at each of the sites. Our goal is to gain a deeper insight into the causes and precursors of landslides, which will facilitate more accurate identification of landslide-prone locations and enable early detection of landslide events. © Published under licence by IOP Publishing Ltd.

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Publication Type: Journal Article

Year of Publication Publication Type Title


Journal Article

Dr. Maneesha V. Ramesh and Dr. Nirmala Vasudevan, “The Deployment of Deep-earth Sensor Probes for Landslide Detection”, Landslides, vol. 9, pp. 457-474, 2012.[Abstract]

In this paper, we present a state-of-the-art wireless sensor network (WSN) of deep-earth probes (DEPs) that has been deployed to monitor an active landslide in the Western Ghats mountain range of South India. While India has one of the highest incidences of landslides and landslide-induced fatalities-primarily in the Himalayas of North India and in the Western Ghats of Central and South India-our study is perhaps the first comprehensive attempt to instrumentally detect landslides in the Western Ghats. Wireless networks have enabled us, since June 2009, to continuously monitor the deployment site in real time and from anywhere around the globe. There have been a few earlier landslide monitoring WSNs using accelerometers in Emilia Romagna Apennines, Italy; global navigation satellite system (GNSS) sensors to monitor the Hornbergl landslide, Austria; and vibrating wire stress sensors to monitor a slope in China. We improved upon these WSN systems by incorporating a variety of sensors-piezometers, dielectric moisture sensors, strain gauges, tiltmeters, a geophone, and a weather station-and installing some of these sensors as deep as 20 m below the ground surface. We present the salient aspects of the field deployment of DEPs: the selection of sensors and their incorporation in DEPs, the methodology we used in embedding these DEPs into the soil, and a few of the key aspects of the wireless sensor network. We also present a description of the deployment site and some of the results of geotechnical investigations carried out on borehole corings. Finally, we present the more interesting field data collected from the monitoring system during a rainy season in July and August 2009. © 2011 Springer-Verlag.

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Journal Article

Dr. Maneesha V. Ramesh, Dr. Nirmala Vasudevan, and Freeman, J., “Real Time Landslide Monitoring via Wireless Sensor Network”, vol. 11, p. 14061, 2009.[Abstract]

Rainfall induced landslides are a common phenomena in the Western Ghat region of Southern India and result in numerous fatalities and damage to property. In order to collect the most relevant and useful data, at the time it is most needed, a wireless sensor network is being used for landslide monitoring. The advantage it gives to landslide monitoring is that it is an inexpensive and reliable way to communicate rapidly over a long distance and inhospitable terrains, collect data in real-time, and alter the data collection rate remotely to suit current environmental conditions. We have implemented a real time landslide monitoring system over a seven acre active complex landslide site. An array of geological sensors (piezometers, tiltmeters, strain gauges, rain gauges, dielectric moisture sensors, geophones) has already been deployed and the data is being automatically collected and forwarded via the wireless sensor network. The geotechnical data is then transferred over 300 km via a satellite link to a remote monitoring station for further analysis. This will give us a better understanding of landslides in this region and prevent the loss of human life.

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