Understanding the seismicity and tectonic patterns along the east coast of South Africa using geophysical and geospatial techniques

dc.contributor.advisorKijko, Andrzej
dc.contributor.coadvisorSingh, Mayshree
dc.contributor.emailu12213889@tuks.co.zaen_US
dc.contributor.postgraduateMapuranga, Victor Philip
dc.date.accessioned2023-02-14T13:15:12Z
dc.date.available2023-02-14T13:15:12Z
dc.date.created2023-04
dc.date.issued2023
dc.descriptionThesis (PhD (Geology))--University of Pretoria, 2023.en_US
dc.description.abstractThe seismicity and seismotectonic setting of KwaZulu-Natal were studied using macroseismic data from two recent earthquakes in the province. It was shown that seismic activity is taking place along pre-existing zones of weakness which are currently undergoing reactivation. The earthquakes studied damaged low-cost houses more than well-built houses located in affluent suburbs, implying a greater need for strict enforcement of building codes relating to seismic loading in South Africa. An intensity-based attenuation relationship was calculated. It was shown that KwaZulu-Natal is vulnerable to tsunamis. Geophysical data was used to shed light on the crustal structure of KwaZulu-Natal. This produced 2.5D models of potential field data showing that the Natal Metamorphic Belt obducted northwards onto the southern margin of the Kaapvaal Craton where tectonic activity is still taking place. The approach of using 2.5D modelling of gravity and magnetic data applied in this study may serve as a benchmark procedure of seismogenic source delineation in South Africa.en_US
dc.description.availabilityUnrestricteden_US
dc.description.degreePhD (Geology)en_US
dc.description.departmentGeologyen_US
dc.identifier.citation*en_US
dc.identifier.doihttps://doi.org/10.25403/UPresearchdata.22093265en_US
dc.identifier.otherA2023
dc.identifier.urihttps://repository.up.ac.za/handle/2263/89502
dc.identifier.uriDOI:https://doi.org/10.25403/UPresearchdata.22093265
dc.language.isoenen_US
dc.publisherUniversity of Pretoria
dc.rights© 2022 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.
dc.subjectSeismicityen_US
dc.subjectSeismotectonicsen_US
dc.subjectGeophysicsen_US
dc.subjectKwaZulu-Natalen_US
dc.subjectSeismic Hazarden_US
dc.subjectUCTD
dc.titleUnderstanding the seismicity and tectonic patterns along the east coast of South Africa using geophysical and geospatial techniquesen_US
dc.typeThesisen_US

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