Potential tsunami hazard of the southern Vanuatu subduction zone: tectonics, case study of the Matthew Island tsunami of 10 February 2021 and implication in regional hazard assessment

Roger, Jean; Pelletier, Bernard; Gusman, Aditya; Power, William; Wang, Xiaoming; Burbidge, David; Duphil, Maxime

doi:https://doi.org/10.5194/nhess-23-393-2023

Articles | Volume 23, issue 2

https://doi.org/10.5194/nhess-23-393-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Tsunamis: from source processes to coastal hazard and...

https://doi.org/10.5194/nhess-23-393-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 2

Research article

|

02 Feb 2023

Research article |

| 02 Feb 2023

Potential tsunami hazard of the southern Vanuatu subduction zone: tectonics, case study of the Matthew Island tsunami of 10 February 2021 and implication in regional hazard assessment

Jean Roger, Bernard Pelletier, Aditya Gusman, William Power, Xiaoming Wang, David Burbidge, and Maxime Duphil

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Month	HTML	PDF	XML	Total
Jun 2022	142	33	6	181
Jul 2022	79	30	7	116
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Sep 2022	21	8	0	29
Oct 2022	23	8	0	31
Nov 2022	20	2	0	22
Dec 2022	12	3	1	16
Jan 2023	29	8	0	37
Feb 2023	378	60	6	444
Mar 2023	142	28	2	172
Apr 2023	95	13	4	112
May 2023	71	31	8	110
Jun 2023	49	19	4	72
Jul 2023	61	28	4	93
Aug 2023	50	17	5	72
Sep 2023	52	14	3	69
Oct 2023	47	14	1	62
Nov 2023	13	8	3	24
Dec 2023	29	13	2	44
Jan 2024	29	5	3	37
Feb 2024	24	23	2	49
Mar 2024	33	22	4	59
Apr 2024	60	24	15	99
May 2024	38	16	3	57
Jun 2024	56	15	2	73
Jul 2024	43	16	4	63
Aug 2024	39	30	3	72
Sep 2024	41	10	4	55
Oct 2024	36	12	3	51
Nov 2024	29	28	0	57
Dec 2024	58	17	0	75
Jan 2025	39	43	2	84
Feb 2025	25	22	2	49
Mar 2025	22	14	1	37
Apr 2025	32	15	2	49
May 2025	70	14	1	85
Jun 2025	58	59	0	117
Jul 2025	48	34	4	86
Aug 2025	51	34	0	85
Sep 2025	34	20	1	55
Oct 2025	36	27	1	64

Cumulative views and downloads (calculated since 07 Jun 2022)

Month	HTML	PDF	XML	Total
Jun 2022	142	33	6	181
Jul 2022	79	30	7	116
Aug 2022	12	7	0	19
Sep 2022	21	8	0	29
Oct 2022	23	8	0	31
Nov 2022	20	2	0	22
Dec 2022	12	3	1	16
Jan 2023	29	8	0	37
Feb 2023	378	60	6	444
Mar 2023	142	28	2	172
Apr 2023	95	13	4	112
May 2023	71	31	8	110
Jun 2023	49	19	4	72
Jul 2023	61	28	4	93
Aug 2023	50	17	5	72
Sep 2023	52	14	3	69
Oct 2023	47	14	1	62
Nov 2023	13	8	3	24
Dec 2023	29	13	2	44
Jan 2024	29	5	3	37
Feb 2024	24	23	2	49
Mar 2024	33	22	4	59
Apr 2024	60	24	15	99
May 2024	38	16	3	57
Jun 2024	56	15	2	73
Jul 2024	43	16	4	63
Aug 2024	39	30	3	72
Sep 2024	41	10	4	55
Oct 2024	36	12	3	51
Nov 2024	29	28	0	57
Dec 2024	58	17	0	75
Jan 2025	39	43	2	84
Feb 2025	25	22	2	49
Mar 2025	22	14	1	37
Apr 2025	32	15	2	49
May 2025	70	14	1	85
Jun 2025	58	59	0	117
Jul 2025	48	34	4	86
Aug 2025	51	34	0	85
Sep 2025	34	20	1	55
Oct 2025	36	27	1	64

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Latest update: 31 Oct 2025

Short summary

On 10 February 2021 a magnitude 7.7 earthquake occurring at the southernmost part of the Vanuatu subduction zone triggered a regional tsunami that was recorded on many coastal gauges and DART stations of the south-west Pacific region. Beginning with a review of the tectonic setup and its implication in terms of tsunami generation in the region, this study aims to show our ability to reproduce a small tsunami with different types of rupture models and to discuss a larger magnitude 8.2 scenario.