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Analysis of possible sources of some unregistered historical earthquake tremors that affected the KwaZulu-Natal coastal regions of South Africa for seismo-tectonic investigations

Author

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  • Mayshree Singh
  • Mulemwa Akombelwa
  • Rodney Maud

Abstract

Historical earthquake information forms a critical dataset for seismo-tectonic investigations that can be used seismic hazard (SH) investigations of hazardous and high rise structures and national SH maps. This study systematically interrogates historical earthquake data for the region from various sources in order to have a better understanding of the origins of the larger earthquakes. Several previously undocumented earthquakes were found that can supplement the national catalogue. Various sources are postulated as origins of these tremors, namely local sources located in Mtubatuba and offshore sources as in the Mozambique Channel. These results re-emphasise the need to better understand the coastal environment for seismo-tectonic characterisation and to densify the seismic network towards the eastern coastline. Copyright Springer Science+Business Media Dordrecht 2015

Suggested Citation

  • Mayshree Singh & Mulemwa Akombelwa & Rodney Maud, 2015. "Analysis of possible sources of some unregistered historical earthquake tremors that affected the KwaZulu-Natal coastal regions of South Africa for seismo-tectonic investigations," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 75(3), pages 2279-2289, February.
    • Handle: RePEc:spr:nathaz:v:75:y:2015:i:3:p:2279-2289
    DOI: 10.1007/s11069-014-1425-8
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