Large Earthquakes Monitored by Ionospheric based system
Why in News
- Indian Institute of Geomagnetism (IIG) studied signs of latest large earthquakes in ionosphere.
What is Indian Institute of Geomagnetism(IIG)?
- It is an autonomous institution of the Department of Science and Technology.
What is the aim/motive of this research?
- It is to derive the seismic source characteristics from the ionosphere.
Why this research conducted?
- It is part of the interdisciplinary program ‘Coupled Lithosphere-Atmosphere- Ionosphere-Magnetosphere System (CLAIMs)’ of IIG.
What is Coupled Lithosphere-Atmosphere- Ionosphere-Magnetosphere System(CLAIMS)?
- Its focus on energy transfer to the atmosphere during solid Earth processes such as earthquakes as well as tsunamis.
What are the key features of this?
- Scientists noticed that the spatial distribution of near field co-seismic ionospheric perturbations (CIP) associated with the earthquake could reflect well the ground deformation pattern evolved around the epicentre.
How do they derive this?
- With Global Positioning System (GPS) measured Total Electron Content (TEC).
What is Total Electron Content?
- It is the total number of electrons present along a path between a radio transmitter and receiver.