Mapping Publicly Available Data Resources for the 2026 Nepal Glacier-Related Hazard Cascade: A Living Scoping Review with an Online Catalogue and Interactive WebGIS (Version 1)

Abstract

The glacier-related hazard cascade that affected Nepal and the Tibet Autonomous Region of China on 26 August 2026 involved a source-area mass movement followed by multiple interacting geomorphic and hydrological processes, including a rapidly propagating debris flow and extensive downstream flooding. Integrated analysis of this sequence, its cause, and its implications for geomorphic hazard susceptibility, exposure, and risk requires a coherent collection of geographical, geological, geomorphological, hydrological, cryospheric, environmental, infrastructure, and societal data and information, spanning the pre-event, event, and post-event periods. The number of relevant publicly available resources is increasing rapidly, but they remain dispersed across cross-institutional and humanitarian portals, satellite archives, geospatial and research repositories, mapping services, and project websites. This scoping review addresses this issue by identifying, organizing, and documenting these resources, including baseline data describing conditions before the event. Potentially relevant records are identified and screened against predefined eligibility criteria. For each included record, information is charted on thematic category, provider and provenance, spatial and temporal coverage, access route and conditions, licence terms, and, where documented, acquisition or production method. Reporting will follow PRISMA-ScR and incorporate relevant PRISMA-LSR items where applicable. The review and its associated online resources will be updated at prespecified intervals or when predefined triggers are met. This online catalogue provides the full inventory, while the interactive WebGIS enables exploration of the spatially enabled subset. Together, the review, catalogue, and WebGIS establish a common evidence base with traceable provenance for investigating the 2026 hazard cascade. The underlying workflow also offers a transparent and reproducible model for compiling, documenting, and disseminating publicly available data resources to support integrated geomorphological and hydrological research, multi-hazard analysis, and assessments of flood hazard, exposure, and risk in comparable contexts.