ShakeMap4-Web: Web Application for ShakeMap 4 Product Visualization

Abstract We present a web portal for prompt visualization of the maps of ground shaking generated using U.S. Geological Survey ShakeMap version 4 software. The web interface renders the standard products provided by ShakeMap dynamically (using Leaflet) and statically (standard ShakeMaps). The information included in the dynamic maps can be configured through different overlays. The dual-view rendering modality allows presenting side-by-side maps of different intensity measurements. In addition, for each earthquake, it is possible to download all the data that contributed to the calculation, together with information on the seismological models adopted. The appearance of the web portal is easily configurable by replacing the logo and banners. The software can be installed both on laptops and on server computers. The user can opt between the Docker image or installation of the software after installation of a web server (e.g., NGINX or Apache).