Tsunami modelling with COMCOT and most other modelling software is based on a series of combined bathymetry and topography grids i.e. rectangular arrays of elevation/depth data, also called Digital Elevation Model (DEM) grids. These elevation modelling grids usually use Mean Sea Level as reference elevation level (zero elevation). These are prepared by processing and merging individual sources of elevation (e.g. LiDAR, topographic maps) and bathymetry (e.g. nautical charts, sonar) data into array grids. XYZ and ESRI ARC ASCII formats are two most commonly used data formats, compatible with most of GIS software. There are other proprietary formats for some simulation software. DOI: https://doi.org/10.21420/mhxg-7x67 Cite as: GNS Science. (2020). Elevation Modelling Grids [Data set]. GNS Science. https://doi.org/10.21420/MHXG-7X67

This dataset contains polygons showing the extent of swath (multibeam) bathymetry data in the SW Pacific. The dataset contains metadata for each survey, but not the actual swath bathymetry data. Data supplied by GNS Science, NIWA and LINZ, and sourced from international data repositories.

An inter-related database covering New Zealand's active and dormant volcanoes. It spans a large variety of datasets ranging from geophysical, geodetic, and geochemical time-series data (e.g. micro-seismicity, magnetics, gas flux, levelling) to geological analyses, photographs and videos, and historical and bibliographic collections of field observations. Most frequently updated datasets are openly available through GeoNet or GNS Science. Others are available upon request (see link below for details). DOI: https://doi.org/10.21420/MWRY-R636 Cite as: GNS Science. (2016). New Zealand Volcano Database [Data set]. GNS Science. https://doi.org/10.21420/MWRY-R636