Preprints
https://doi.org/10.5194/nhess-2023-198
https://doi.org/10.5194/nhess-2023-198
12 Dec 2023
 | 12 Dec 2023
Status: this preprint is currently under review for the journal NHESS.

A brief history of tsunamis in the Vanuatu Arc

Jean Roger and Bernard Pelletier

Abstract. The archipelagos of Vanuatu and Eastern Solomon Islands, scattered over 1500 km along the Vanuatu Arc, include dozens of inhabited volcanic islands exposed to many natural hazards which impact their populations more or less severely. Due to the location of these islands upon a subduction interface, known as the Vanuatu Subduction Zone, tsunamis triggered by earthquakes, volcanic eruptions, and landslides locally, regionally and in the far field, represent a permanent threat. If catalogues already listed tsunamis having occurred in the Vanuatu Arc, they were not exclusively focusing on this region. This study goes further in the listing of tsunamis reported and/or recorded in the Vanuatu Arc, analysing existing catalogues, historical documents, and sea-level data from the 5 coastal tide gauges located in Vanuatu at Port Vila (Efate), Luganville (Santo), Litzlitz (Malekula) and Lenakel (Tanna) and in the Eastern Solomon Islands Province at Lata (Ndende). It allows to identify 100 tsunamis since 1863, 15 of them showing wave amplitude and/or run-up height of more than one meter and 8 between 0.3 and 1 m. If it is known that some tsunamis occurred by the past, information about the wave amplitude or potential run-up is sometime lost (15 events). Also, tsunamis reported in neighbouring islands like New Caledonia, but not reported or recorded in the Vanuatu Arc are discussed, as well as debated events or events with no known origin(s).

Jean Roger and Bernard Pelletier

Status: open (until 26 Mar 2024)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2023-198', Anonymous Referee #1, 06 Jan 2024 reply
    • CC1: 'Reply on RC1', Jean Roger, 12 Jan 2024 reply
Jean Roger and Bernard Pelletier
Jean Roger and Bernard Pelletier

Viewed

Total article views: 259 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
203 41 15 259 18 10 9
  • HTML: 203
  • PDF: 41
  • XML: 15
  • Total: 259
  • Supplement: 18
  • BibTeX: 10
  • EndNote: 9
Views and downloads (calculated since 12 Dec 2023)
Cumulative views and downloads (calculated since 12 Dec 2023)

Viewed (geographical distribution)

Total article views: 253 (including HTML, PDF, and XML) Thereof 253 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 26 Feb 2024
Download
Short summary
This study presents a catalogue of tsunamis having occurred in the Vanuatu Arc. It has been built based on the analysis of existing catalogues, historical documents, and sea-level data from the 5 coastal tide gauges. 100 tsunamis of local, regional or far-field origins are listed since 1863. 15 of them show maximum wave amplitude and/or run-up height of above 1 m and 8 between 0.3 and 1 m. Details are provided for particular events, including debated events or events with no known origin(s).
Altmetrics