River deltas are among the most valuable ecosystems on Earth, providing essential habitat and natural resources, coastal protection against storm impacts, and sequestering carbon. However, these coastal systems are threatened by climate change, land loss, and poor management practices. The long-term sustainability of deltas is dependent on sediment delivery, biogeochemical cycles, and human stewardship. Understanding the dynamics of deltas is particularly challenging due to the multiscale interactions between vegetation, sediment transport, water flow, and biogeochemical processes. Predicting how these processes will impact deltas requires cross-disciplinary research, including advances within hydrology, geomorphology, ecology, and biogeochemistry. We encourage submissions that fill knowledge gaps including water and sediment residence time, extreme events, carbon and nutrient budgets, and impacts of management interventions. We welcome research including remote sensing, numerical modeling, experimentation, and in-situ field measurements to understand subaerial and subaqueous delta processes and improve predictions of delta resilience at landscape, regional, and global scales. 

• B - Biogeosciences
• GC - Global Environmental Change
• H - Hydrology
• OS - Ocean Sciences