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Mapping Earthquakes in Malawi Using Incorporated Research Institutions for Seismology (IRIS) Catalogue for 1972–2021

Authors: Polina Lemenkova;

Mapping Earthquakes in Malawi Using Incorporated Research Institutions for Seismology (IRIS) Catalogue for 1972–2021

Abstract

Die Visualisierung kartografischer Daten ist für die geologische Kartierung in seismisch aktiven Gebieten Malawis von entscheidender Bedeutung. Die Darstellung der Datensätze aus der IRIS-Datenbank ist für die Risikobewertung, Vorhersage und Schadensminderung von Vorteil, insbesondere für die Kartierung der Verteilung und Stärke von Erdbeben. Skriptkartografie mit Generic Mapping Tools (GMT) wurde verwendet, um die Seismizität in der Malawi Rift Zone auf der Grundlage des IRIS-Katalogs für 1972–2021 zu kartieren. Die Karten zeigen Zusammenhänge zwischen den Höhenlagen, der Verteilung seismischer Ereignisse und Vulkanen im Norden des Malawisees. Die Ergebnisse zeigen eine Korrelation zwischen Höhen und Seismizität mit lokalen topografischen Vertiefungen. Seismische Daten zeigen eine Variabilität des Seismizitätsniveaus, da im Norden des Landes mehr Erdbeben registriert wurden. Dieses Papier leistet einen Beitrag zu den Regionalstudien Malawis zur Risikobewertung und geologischen Gefahrenanalyse.

Cartographic data visualization is crucial for geological mapping in seismically active areas of Malawi. Representation of the datasets from IRIS database is beneficial for hazard risk assessment, forecasting and damage mitigation, especially for mapping the distribution and magnitude of earthquakes. Scripting cartography using Generic Mapping Tools (GMT) was used to map seismicity in Malawi Rift Zone based on IRIS catalogue for 1972–2021. The maps show relations among the elevation heights, distribution of seismic events and volcanos in the north of the Malawi Lake. The results show correlation between elevations and seismicity with local topographic depressions. Seismic data show variability of the seismicity level with more earthquakes recorded in the north of the country. This paper contributes to the regional studies of Malawi for risk assessment and geological hazard analysis.

Countries
Italy, Austria, Belgium
Keywords

Q40, Malawi, Q42, Valuation of Environmental Effects, Malawi-Riftzone, Optimization Techniques, Dynamic Analysis, Malawi Rift Zone, Environment, Sciences de l'ingénieur, Q00, Environmental and Ecological Economics: General, Energy: General, Géographie physique, Programming Models, Géomorphologie et orographie, earthquakes, Alternative Energy Sources, Q51, Géodésie, GMT, Energy, Cartographie, Pictures and Maps, Mathematical Methods and Programming: Other, P18, Mathematical Methods and Programming: General, Agricultural and Natural Resource Economics, Criteria for Decision-Making under Risk and Uncertainty, Y91, Géodésie appliquée topographie [télédétection], C60, D81, C61, Séismologie, C69, Erdbeben, Malawi, earthquakes, GMT, seismicity, Malawi Rift Zone, seismicity, Photogrammétrie - cartographie, Sciences exactes et naturelles, Seismizität

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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