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

Williams, Jack N.; Mdala, Hassan; Fagereng, Åke; Wedmore, Luke N. J.; Biggs, Juliet; Dulanya, Zuze; Chindandali, Patrick; Mphepo, Felix

doi:https://doi.org/10.5194/se-12-187-2021

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.

https://doi.org/10.5194/se-12-187-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 1

Research article

|

27 Jan 2021

Research article |

| 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, Hassan Mdala, Åke Fagereng, Luke N. J. Wedmore, Juliet Biggs, Zuze Dulanya, Patrick Chindandali, and Felix Mphepo

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Final revised paper (published on 27 Jan 2021)
Supplement to the final revised paper
Preprint (discussion started on 14 Jul 2020)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of A systems-based approach to parameterise seismic hazard in regions with little historical or instrumental seismicity: The South Malawi Active Fault Database', Richard Styron, 19 Aug 2020
- AC1: 'Reply to Reviewer 1', Jack Williams, 21 Sep 2020
RC2: 'Review Comments on Williams et al. (A systems-based approach to parameterise seismic hazard in regions with little historical or instrumental seismicity)', FOLARIN KOLAWOLE, 23 Aug 2020
- AC2: 'Reply to Reviewer 2', Jack Williams, 21 Sep 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Jack Williams on behalf of the Authors (19 Oct 2020) Author's response Manuscript

ED: Publish as is (16 Nov 2020) by Zoe Mildon

ED: Publish as is (18 Nov 2020) by Federico Rossetti (Executive editor)

AR by Jack Williams on behalf of the Authors (24 Nov 2020)

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.