A novel approach to mapping ebb-tidal delta morphodynamics and stratigraphy

Ebb tidal deltas (ETDs) are highly dynamic features of sandy coastal systems, and coastal management concerns (e.g., nourishment and navigation) present a pressing need to better describe and quantify their evolution. Here we propose two techniques for leveraging the availability of high-resolution bathymetric surveys to generate new insights...

Grain size fractionation by process-driven sorting in sandy to muddy deltas

Modern and ancient analogues are often consulted by geologists to help understand subsurface systems. While modern analogues provide information on the areal relationship between facies, ancient systems provide detailed data on the vertical facies variations, typically along a two-dimensional outcrop. Combining data from modern and ancient...

A numerical model of a 3-dimensional low-density turbidity current in the deep ocean: testing hypotheses on turbidity currents in deep detail

From fluvial supply to delta deposits: Simulating sediment delivery, transport and deposition

Geological reservoir models, created based on sparse core and seismic data, inform hydrocarbon production, geothermal applications and aquafer management. Important factors contributing to reservoir quality in these applications include the heterogeneities within and connectivity between the relevant geo‐bodies constituting the reservoir. The...

Sediment deposition and preservation in mouth bar complexes of prograding deltas

In deltaic deposits, the largest volumes of sandy deposits occur at the delta top (as channel accretion, overbank deposits) and as distinct or amalgamated sandy mouth bars in the upper delta front. We use process-based models to study the sediment distribution in four evolving deltas, each with a different input sediment profile. We show how the...

Differences in mouthbar complex geometry and grain size trends across systems with different sediment supply compositions

Extracting 3D grain size trends across synthetic analogues of prograding deltas created in Delft3D GeoTool

Geological models are generated by interpretation and interpolation of sparse data. To limit uncertainty, relevant analogues are used to extrapolate knowledge of previously studied, well understood systems. However, these analogues only provide a snapshot of deposition. During delta progradation, sediment will not only be deposited, but is also...

Can bed load transport drive varying depositional behaviour in river delta environments?

Abstract Understanding the processes and conditions at the time of deposition is key to the development of robust geological models which adequately approximate the heterogeneous delta morphology and stratigraphy they represent. We show how the mechanism of sediment transport (the proportion of the sediment supply transported as bed load vs....

Establishing 3d numerical reservoir analogues: Modelling the formation of sand bodies in deltaic environments

The assessment and production of hydrocarbon resources incorporates geological models created from core and wireline well data, as well as seismic data. This data is spatially discrete but is used create a spatially continuous model. However, the heterogeneity within depositional environments is on a smaller spatial scale than the available data...

Sustainable urban development: Research and experiments; proceedings of a PRO/ECE-workshop held in Dordrecht, november 1993

As chairman ofthe Consultative Programming Committee for Spatial Research (PRO) it is a great pleasure for me to present to you this publication. The theme of this publication, sustainable urban development, is one ofthe major issues oft day. In its Vision on Planning Research in the 1990's, PRO has given priority to several aspects of...