Digital Elevation Model of Rupert’s Bay, Saint Helena (UK)

For the purpose of studying the impact of the 12 August 2021 South Sandwich tsunami in several locations around the world, a high-resolution digital elevation model (DEM) of Rupert’s Bay, Saint Helena Island (UK) has been built using three different types of data. They include: - The Global dataset 15 arcsec resolution GEBCO (2021) - The Global dataset 1 arcsec resolution SRTM (2013) - Digitized and georeferenced British Admiralty Nautical Chart 1771 – Saint Helena with approaches to Ascension Island (Edition 2019). The data showing the highest resolution has been kept in priority. The compilation of data has been interpolated to a regular spatial resolution of 0.00009° (~10m) between 5.71983815°W and 5.708260845°W and 15.91976089°S and 15.91137492°S using the krigging method. For more information about this method, see for example Oliver and Webster (1990). Two DEMs of lower resolution have been also built using the same methodology for nesting purpose used in tsunami simulations: - 0.0009° (~100 m): 5.744811692°W/5.697394505°W/15.92473881°S/15.89487881°S - 0.0045° (~500 m): 7.589583334°W/3.464583333°W/17.37291667°S/14.18124999°S DOI: https://doi.org/10.21420/YQF6-BV20 Cite data as: Roger, J. (2022). Digital Elevation Model of Rupert’s Bay, Saint Helena (UK). GNS Science. https://doi.org/10.21420/YQF6-BV20