Geosciences
GEOSCIENCES
The activities carried out under Geosciences covers two most destructive geo-hazards in the state as:
- Earthquake
Nagaland along with rest of the north-east region is seismically one of the most active segments of the world and prone to earthquake disasters. Therefore the DGM, Nagaland, has been engaged in monitoring the seismicity of the Naga Hills range since the last decade by setting up of Seismic observatories in collaboration with the North East Institute of Science & Technology (CSIR-NEIST) Jorhat.
Under the collaborative program, 9 (nine) remote observatories has been installed in Nagaland at Jharnapani, Kohima, Tseminyu, Pfutsero, Meluri, Kiphire, Tuensang, Peren and Yaongyimsen which are presently maintained by DGM with constant monitoring at NEIST, Jorhat. A separate Seismic Subnet and recording centre is being set up at DGM, which is under progress for complete installation and functioning.
Two high resolution GPS Remote stations had been installed along Indo- Mynmar border at Pungro and Meluri to monitor plate movement
- Landslide
Nagaland falls in Zone V i.e. very high hazard zone, in the Landslide Hazard Zonation Map of India. It is infested with numerous paleoslides as well as active landslides. People of Nagaland are therefore made to live at the mercy of merciless hazardous landslides since time immemorial. Therefore DGM, Nagaland has been putting effort for prevention and mitigation of landslides by carrying out both Non-structural and Structural Methods of mitigation in the state. The former includes inventory mapping, hazard zonation mapping and risk assessment of landslides of town/village or region. The latter comprises of site specific investigation and exploration of landslides for obtaining both surface and sub-surface data and give appropriate methods of remedial measures for durable stability of the landslide site.