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Question
If an earthquake occurs in a region, why the tremors is felt in a little far away regions while there are no tremors felt in between the two regions. One would expect that  the ripples created by the earthquake should travel in all directions but this apparently does not seem to happen. What is the scientific explanation for this?

Answer
EQ waves spreads in all direction, due to anisotropic behavior/conditions within the earth's interior and alluvium these waves might get attenuated locally resulting in feeble tremors in comparison to other areas due to the same event.
To my belief there cannot be an contiguous area (between two regions of yours) without any tremors.
thanks

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N.K.Agarwal

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Would be happy to answer : General Geology, Engineering Geology, Economic Geology, Geomorphology, Geoenvironment, Tectonics, Natural Resources inclusive of Rocks & Minerals, Exploration, Science Policy etc.

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Geological-Geotechnical Solutions and professional advice. I have over 34 years of professional experience of working as a geologist in diverse mountainous terrain. I have professional skills for planning. programming, executing and monitoring of : (1) Engineering Geological investigations in Hydropower and Developmental projects, (2) Landslide and Disaster Management etc. (3) Natural Resource Management and Programming (4) Geological Mapping (5) Geoenvironmental Management (6) Mineral Exploration (7) Water Resources Management, (8) Integrated Watershed Management, (9) Training on - Natural Resource Management, Geoenvironmental Management, Waste Management, Geohazards, Geotechnical Investigations, Data acquisition & interpretations, (10) R&D Initiatives and Societal issues etc.

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M.Tech.(Applied Geology), University of Roorkee (now IIT Roorkee).

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Worked in the Geological Survey of India for aabout 32 years. Presently - GeoConsultant & Advisor - HIGEOS India

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