Tsunami trimlines identified across different islands of the Tonga archipelago
| Dataset title | Tsunami trimlines identified across different islands of the Tonga archipelago |
|---|---|
| Dataset creators | Alessandro Novellino, British Geological Survey David Tappin, British Geological Survey Luke Bateson, British Geological Survey Sebastian Watt, University of Birmingham |
| Dataset theme | Geoscientific Information |
| Dataset abstract | Tsunami trimlines identified across different islands of the Tonga archipelago. Trimlines have been used as a reference land feature following the January 2022 Tonga tsunami event that ripped off vegetation and built-up areas. Trimlines are distinctive limits between an area with sand coverage, vegetation destruction, and soil erosion on the one hand, and the unaffected natural vegetation on the other. This distinction provides a good landmark to map the inundation width and the landward extension of tsunami runup. In this case, the trimlines have been manually delineated by BGS - Earth Observation team using different high-resolution satellite datasets both optical (KompSat, Planet, Pleiades, WorldView) and radar (TerraSAR-X). Trimlines are well known from task-force publications documenting recent tsunami detection efforts and provide key information to support tsunami triggering mechanism models. For more info, see https://www.usgs.gov/media/images/tsunami-terms and Scheffers et al. (2012), https://doi.org/10.1007/s11069-010-9691-6 |
| Dataset content dates | 01/04/2017 to 30/04/2022 |
| Dataset spatial coverage | Tonga archipelago |
| Dataset supply format | Shapefile |
| Dataset language | English-United Kingdom |
| Dataset discovery metadata record | Discovery Link to the dataset's BGS Discovery Metadata record. |
| Dataset publisher | NERC EDS National Geoscience Data Centre |
| Dataset publication date | 3rd December 2022 |
| Dataset digital object identifier(DOI) | 10.5285/e8926a1a-305a-441d-a0d8-7f6c96d83c3b |
| Dataset citation text | Novellino, A., Tappin, D., Bateson, L., Watt, S. (2022). Tsunami trimlines identified across different islands of the Tonga archipelago. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/e8926a1a-305a-441d-a0d8-7f6c96d83c3b |
| Constraints and terms of use | This data set is available under Open Government Licence, subject to the following acknowledgement accompanying any reproduced materials: "Contains data supplied by permission of the Natural Environment Research Council [YEAR]". |
| Access the dataset | https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item176959. |
| Further information | Scheffers, A., Scheffers, S. & Squire, P. Trimlines as evidence for palaeo-tsunamis. Nat Hazards 63, 165–179 (2012). https://doi.org/10.1007/s11069-010-9691-6 |