A prototype using open-source WebGIS technologies has been implemented to make data on hazard impacts, such as damaged infrastructure, landslides or flooding events available to authorities and the general public. This mobile application has been designed as a low-cost, rapid and participatory method for recording impacts from hazard events and includes geolocation (GPS data and Internet), visualize the map, drawing and adding a comment or feedback by public participation. It is possible to record such events and upload them through a server, where internet connections is available. This application can be accessed by a mobile phone (Android or iPhone) or a tablet as hybrid version for both offline and online versions.
Based on recent visit to Nepal, internet is available through mobile network however accessibility to the server was not easy. For this reason, an offline mobile application has been implemented to improve the lack of internet in rural area. This offline version has an interactive-offline map with satellites image added to improve the visibility and mapping landslides. After geolocation, the user can start mapping and save them into Geojson text file that can be easily uploaded to the server whenever internet is available. This prototype would be specifically targeted at conducting an assessment of landslides within a predetermined area to assess land use characteristics such as roads, forest area, rivers.
Following videos show the process of this offline-online landslide mapping tool. The area selected for this project is close to Pokhara, Nepal where so many landslides have been activated or reactivated after the last monsoon. More than 60 landslides during two days of field trips has been recorded.
Video 1: Offline Landslide Mapping tool: A case study from Nepal
Video 2: Online Landslide mapping tool: Uploading offline data into system
Video 3: Online Landslide Mapping Tool: Tutorial