OpenQuake Map ViewerThe Global Liquefaction Map shows the annualised rate of exceeding a liquefaction spatial extent (LSE) of 20% — a threshold indicative of severe surface manifestation. The map is provided at a spatial resolution of 30 arc-seconds (~ 1 km at the equator). Seismic hazard data is integrated with geospatial liquefaction models, accounting for epistemic uncertainty to estimate global liquefaction hazard. The map is computed using the event-based calculator of the OpenQuake Engine, an open- source software for hazard and risk assessment developed by the GEM Foundation, which aggregates earthquake impacts across a set of scenarios into a long-term annualised metric.
A global road network dataset of highways and primary roads, taken from OpenStreetMap (OSM), is shown with a colour scale representing the annualised rate of exceeding a liquefaction spatial extent (LSE) of 20%.
By default this interactive map viewer presents liquefaction hazard on the left and the road network on the right, both coloured in terms of the annual rate of exceeding LSE of 20%.
Please see the following links for further details:
https://www.globalquakemodel.org/product/global-liquefaction-hazard
https://www.globalquakemodel.org/product/global-road-exposure-shaking-liquefaction-map
Todorović L, Costa C, Rao A, Silva V (2026). Global Earthquake Model (GEM) Global Map of Liquefaction and Road Exposure (version 2026.1), https://doi.org/10.5281/zenodo.20208650
The authors have strived to ensure that the information in this product is as accurate as possible. However, they do not guarantee that the information herein is completely correct or comprehensive. Therefore, you should not rely solely on this information when making decisions involving human life, capital, or movable and immovable property. Users of the information provided accept all liability resulting from such use. While aiming to deliver practical and precise information, the authors accept no liability for, nor do they imply any warranty regarding, the information contained hereafter.The depiction and use of boundaries, names and designations on this map do not imply any official endorsement, acceptance or position by the GEM Foundation. These boundaries correspond to those used during the collection and compilation of exposure information from national authorities and are included for analytical purposes only.