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The Digital Elevation Model was used to examine the morphological change of the Elbe River estuary. The results show that siltation predominated in the tidal flat in the northern estuary. In contrast, a continuous erosion prevailed in the main river channel, south of the estuary. The tidal asymmetry via ebbing flow prevailed in the tidal flat, meaning continuous aggradation northwestward, while flooding flow dominated in the main river channel with deepening thalweg at south, showing a landward sedimentation via the tidal pumping processes. This dextral extension of estuarine morphology is due to the Coriolis force, leading to inconsistent directions of in-out flows, which enables the estuarine siltation. [Source: Frontiers of Space Science]
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