Digital Earth Flood Event Explorer – The River Plume Workflow
The focus of the River Plume workflow is the impact of riverine flood events on the marine environment. At the end of a flood event chain, an unusual amount of nutrients and pollutants is washed into the North Sea, which can have consequences, such as increased algae blooms.
Modelling River Flows
Using a combination of observational data, namely FerryBox transects, and model data, the River Plume Workflow enables users to detect a river plume in the North Sea and to map its spatio-temporal extent. Identifying river plume candidates can either happen manually in the visual interface, or soon also through an automatic anomaly detection algorithm, using Gaussian regression. Once a river plume candidate is found, a statistical analysis supplies additional detail on the anomaly and helps to compare the suspected river plume to the surrounding data. Simulated trajectories of particles starting on the FerryBox transect at the time of the original observation and modelled backwards and forwards in time help to verify the origin of the river plume and allow users to follow the anomaly across the North Sea. An interface to a data portal is currently developed, enabling users to load additional observational data into the workflow. This will provide an overview of the flood impacts and the river plume’s development on its way through the North Sea.
The River Plume Workflow aims to simplify the investigation of flood events and impacts in marine environments and to support scientists with future campaign planning.
See the River Plume Workflow in action:
Nicola Abraham, Helmholtz-Zentrum Hereon: nicola.abraham(at)hereon.de
Viktoria Wichert, Helmholtz-Zentrum Hereon: viktoria.wichert(at)hereon.de
Holger Brix, Helmholtz- Zentrum Hereon: holger.brix(at)hereon.de