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Welcome to Institute of Seismological Research

Observational Seismology

 

Core Competence:

 

  • Seismicity monitoring, RTS and LET studies for Hydro projects
  • Tomographic imaging of crustal and upper mantle structures
  • Seismic structure, Anisotropy and mantle deformation studies
  • Subduction zone seismology and intraplate tectonics
  • Application of Deep learning models in seismology
  • Estimation of source parameters and developing regional scaling laws
  • Attenuation studies to understand energy loss mechanisms
  • Modelling earthquake rupture dynamics
  • Source characterization and Stress inversion studies
  • Earthquake location/relocation using different algorithms
  • Spatio-temporal analysis of seismicity

 

Significant Contributions:

 

  • Advanced methodologies in attenuation analysis, yielding deeper insights into seismic energy dissipation
  • Investigated reservoir-triggered seismicity with field data and modelling, directly influencing regional risk management practices
  • Developed robust scaling relations for small earthquakes, contributing to improved hazard assessment for Intraplate region Kachchh, and Saurashtra
  • Understanding the role of monsoon-induced seismic swarm activity in different regions of Gujarat state
  • Developed a Python-based toolkit “SeisAug” for data augmentation in seismological studies
  • Developed CNN based models for identifying blasts and earthquakes
  • Enhanced tomographic imaging techniques that resolve detailed subsurface structures
  • Conducted detailed focal mechanism analysis of earthquakes in Gujarat and Northeast India using waveform modeling techniques, enhancing understanding of regional fault dynamics and stress orientations
  • Site amplification studies to aid urban planning and disaster risk reduction initiatives
  • Insights into the lithospheric structure and seismicity of the Andaman-Nicobar Subduction Zone
  • Study on subslab anisotropy and seismic source characterization in multiple Indian tectonic provinces
  • Created comprehensive seismicity maps using GMT and Python, incorporating earthquake magnitude, depth, and spatial distribution for accurate hazard interpretation

 

Current Pursuits:

 

  • Investigating crustal and lithospheric properties using receiver function and shear-wave splitting techniques.
  • Studying the lowermost mantle (D'' layer) using shear-wave splitting techniques to understand mantle dynamics.
  • Developing an automated system for detecting, locating, and notifying information about local earthquakes at ISR’s data center using SeisComP.
  • Exploring the application of AI to various seismological research problems; conceptualized and currently developing ISR’s official GitHub repository:https://github.com/ISR-AIML/
  • Continuing to refine source parameter estimates and scaling laws through both field observations and data analyses.
  • Conducting detailed attenuation studies to better understand seismic wave propagation.
  • Utilizing seismic tomography for high-resolution imaging of the crust beneath Gujarat.
  • Monitoring and modeling reservoir-triggered seismicity as part of integrated near-real-time seismological systems.
  • Leveraging near-real-time seismic data for rapid earthquake detection and early warning.
  • Engaged in detailed evaluation of ground motion characteristics to assess local seismic response and site effects.
  • Estimating focal mechanisms of local earthquakes through waveform modelling, aiming to improve understanding of active fault systems and stress orientations in Gujarat.

 

Personnel:

 

  • Dr. Santosh Kumar, Scientist - E, Group Head
  • Dr. G. Srijyanthi, Scientist-C
  • Dr.ArunPrasath R, Scientist-C
  • Dr. Rakesh Kumar Bhagora, Scientist-B
  • Mr. Jignesh Patel, Technical Officer
  • Mr. GanpatParmar, Technical Officer