Citizen seismology helps decipher the 2021 Haiti earthquake | Zendy

E. Calais | Zendy; Steeve Symithe | Zendy; T. Monfret | Zendy; Bertrand Delouis | Zendy; Anthony Lomax | Zendy; F. Courboulex | Zendy; JeanPaul Ampuero | Zendy; Pablo Lara | Zendy; Quentin Blétery | Zendy; Jérôme Chèze | Zendy; Fabrice Peix | Zendy; A. Deschamps | Zendy; Bernard de Lépinay | Zendy; Bryan Raimbault | Zendy; Romain Jolivet | Zendy; Sylvert Paul | Zendy; Sadrac St Fleur | Zendy; Dominique Boisson | Zendy; Y. Fukushima | Zendy; Zacharie Duputel | Zendy; Liuwei Xu | Zendy; Lingsen Meng | Zendy

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Citizen seismology helps decipher the 2021 Haiti earthquake

Author(s) -

E. Calais,

Steeve Symithe,

T. Monfret,

Bertrand Delouis,

Anthony Lomax,

F. Courboulex,

JeanPaul Ampuero,

Pablo Lara,

Quentin Blétery,

Jérôme Chèze,

Fabrice Peix,

A. Deschamps,

Bernard de Lépinay,

Bryan Raimbault,

Romain Jolivet,

Sylvert Paul,

Sadrac St Fleur,

Dominique Boisson,

Y. Fukushima,

Zacharie Duputel,

Liuwei Xu,

Lingsen Meng

Publication year - 2022

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.abn1045

Subject(s) - aftershock , seismometer , seismology , geology , geodetic datum , foreshock , earthquake rupture , fault (geology) , geodesy

On 14 August 2021, the moment magnitude (M w ) 7.2 Nippes earthquake in Haiti occurred within the same fault zone as its devastating 2010M w 7.0 predecessor, but struck the country when field access was limited by insecurity and conventional seismometers from the national network were inoperative. A network of citizen seismometers installed in 2019 provided near-field data critical to rapidly understand the mechanism of the mainshock and monitor its aftershock sequence. Their real-time data defined two aftershock clusters that coincide with two areas of coseismic slip derived from inversions of conventional seismological and geodetic data. Machine learning applied to data from the citizen seismometer closest to the mainshock allows us to forecast aftershocks as accurately as with the network-derived catalog. This shows the utility of citizen science contributing to our understanding of a major earthquake.

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