Articles | Volume 12, issue 1
https://doi.org/10.5194/se-12-187-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-12-187-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Jan 2021
Research article |
| 27 Jan 2021
| 27 Jan 2021
A systems-based approach to parameterise seismic hazard in regions with little historical or instrumental seismicity: active fault and seismogenic source databases for southern Malawi
Jack N. Williams
CORRESPONDING AUTHOR
School of Earth and Environmental Sciences, Cardiff University, Cardiff, UK
Hassan Mdala
Geological Survey Department, Mzuzu Regional Office, Mzuzu, Malawi
Åke Fagereng
School of Earth and Environmental Sciences, Cardiff University, Cardiff, UK
Luke N. J. Wedmore
School of Earth Sciences, University of Bristol, Bristol, UK
Juliet Biggs
School of Earth Sciences, University of Bristol, Bristol, UK
Zuze Dulanya
Geography and Earth Sciences Department, University of Malawi, Zomba, Malawi
Patrick Chindandali
Geological Survey Department, Zomba, Malawi
Felix Mphepo
Geological Survey Department, Mzuzu Regional Office, Mzuzu, Malawi
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Cited
17 citations as recorded by crossref.
- The Luangwa Rift Active Fault Database and fault reactivation along the southwestern branch of the East African Rift L. Wedmore et al. 10.5194/se-13-1731-2022
- Determining Histories of Slip on Normal Faults With Bedrock Scarps Using Cosmogenic Nuclide Exposure Data H. Goodall et al. 10.1029/2020TC006457
- Comparing intrarift and border fault structure in the Malawi Rift: Implications for normal fault growth M. Carpenter et al. 10.1016/j.jsg.2022.104761
- Scenario-based earthquake risk assessment for central-southern Malawi: The case of the Bilila-Mtakataka Fault K. Goda et al. 10.1016/j.ijdrr.2021.102655
- Strain localization and migration during the pulsed lateral propagation of the Shire Rift Zone, East Africa F. Kolawole et al. 10.1016/j.tecto.2022.229499
- The Malawi Active Fault Database: An Onshore‐Offshore Database for Regional Assessment of Seismic Hazard and Tectonic Evolution J. Williams et al. 10.1029/2022GC010425
- Geomorphological and geophysical analyses of the Hebron Fault, SW Namibia: implications for stable continental region seismic hazard G. Salomon et al. 10.1093/gji/ggab466
- Structural inheritance in amagmatic rift basins: Manifestations and mechanisms for how pre-existing structures influence rift-related faults A. Samsu et al. 10.1016/j.earscirev.2023.104568
- Geodetic Constraints on Cratonic Microplates and Broad Strain During Rifting of Thick Southern African Lithosphere L. Wedmore et al. 10.1029/2021GL093785
- The Entire Crust can be Seismogenic: Evidence from Southern Malawi V. Stevens et al. 10.1029/2020TC006654
- Fault-based probabilistic seismic hazard analysis in regions with low strain rates and a thick seismogenic layer: a case study from Malawi J. Williams et al. 10.1093/gji/ggad060
- Geologic and geodetic constraints on the magnitude and frequency of earthquakes along Malawi's active faults: the Malawi Seismogenic Source Model (MSSM) J. Williams et al. 10.5194/nhess-22-3607-2022
- A relocated earthquake catalog and ground motion database for the southern East African rift system J. Holmgren et al. 10.1177/87552930231173450
- Ranking and developing ground-motion models for Southeastern Africa J. Holmgren et al. 10.1177/87552930241236765
- Geomorphology of the Makgadikgadi Basin (Botswana): Insight Into the Propagation of the East African Rift System L. Gaudaré et al. 10.1029/2023TC007988
- Knickpoint morphotectonics of the Middle Shire River basin: Implications for the evolution of rift interaction zones Z. Dulanya et al. 10.1111/bre.12687
- Implications of building code enforcement and urban expansion on future earthquake loss in East Africa: case study—Blantyre, Malawi N. Giordano et al. 10.1007/s11069-023-05895-1
17 citations as recorded by crossref.
- The Luangwa Rift Active Fault Database and fault reactivation along the southwestern branch of the East African Rift L. Wedmore et al. 10.5194/se-13-1731-2022
- Determining Histories of Slip on Normal Faults With Bedrock Scarps Using Cosmogenic Nuclide Exposure Data H. Goodall et al. 10.1029/2020TC006457
- Comparing intrarift and border fault structure in the Malawi Rift: Implications for normal fault growth M. Carpenter et al. 10.1016/j.jsg.2022.104761
- Scenario-based earthquake risk assessment for central-southern Malawi: The case of the Bilila-Mtakataka Fault K. Goda et al. 10.1016/j.ijdrr.2021.102655
- Strain localization and migration during the pulsed lateral propagation of the Shire Rift Zone, East Africa F. Kolawole et al. 10.1016/j.tecto.2022.229499
- The Malawi Active Fault Database: An Onshore‐Offshore Database for Regional Assessment of Seismic Hazard and Tectonic Evolution J. Williams et al. 10.1029/2022GC010425
- Geomorphological and geophysical analyses of the Hebron Fault, SW Namibia: implications for stable continental region seismic hazard G. Salomon et al. 10.1093/gji/ggab466
- Structural inheritance in amagmatic rift basins: Manifestations and mechanisms for how pre-existing structures influence rift-related faults A. Samsu et al. 10.1016/j.earscirev.2023.104568
- Geodetic Constraints on Cratonic Microplates and Broad Strain During Rifting of Thick Southern African Lithosphere L. Wedmore et al. 10.1029/2021GL093785
- The Entire Crust can be Seismogenic: Evidence from Southern Malawi V. Stevens et al. 10.1029/2020TC006654
- Fault-based probabilistic seismic hazard analysis in regions with low strain rates and a thick seismogenic layer: a case study from Malawi J. Williams et al. 10.1093/gji/ggad060
- Geologic and geodetic constraints on the magnitude and frequency of earthquakes along Malawi's active faults: the Malawi Seismogenic Source Model (MSSM) J. Williams et al. 10.5194/nhess-22-3607-2022
- A relocated earthquake catalog and ground motion database for the southern East African rift system J. Holmgren et al. 10.1177/87552930231173450
- Ranking and developing ground-motion models for Southeastern Africa J. Holmgren et al. 10.1177/87552930241236765
- Geomorphology of the Makgadikgadi Basin (Botswana): Insight Into the Propagation of the East African Rift System L. Gaudaré et al. 10.1029/2023TC007988
- Knickpoint morphotectonics of the Middle Shire River basin: Implications for the evolution of rift interaction zones Z. Dulanya et al. 10.1111/bre.12687
- Implications of building code enforcement and urban expansion on future earthquake loss in East Africa: case study—Blantyre, Malawi N. Giordano et al. 10.1007/s11069-023-05895-1
Latest update: 26 Apr 2024
Short summary
Earthquake hazard is often specified using instrumental records. However, this record may not accurately forecast the location and magnitude of future earthquakes as it is short (100s of years) relative to their frequency along geologic faults (1000s of years). Here, we describe an approach to assess this hazard using fault maps and GPS data. By applying this to southern Malawi, we find that its faults may host rare (1 in 10 000 years) M 7 earthquakes that pose a risk to its growing population.
Earthquake hazard is often specified using instrumental records. However, this record may not...
