Sedimentology and hydrogeology of two braided stream deposits

Anderson, Mary P.; Aiken, James S.; Webb, Erik K.; Mickelson, David M.

doi:10.1016/s0037-0738(99)00015-9

Cited by 111 publications

(73 citation statements)

References 44 publications

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“…The dominance of horizontal to low-angle stratification, the sheet-like character with sharp top and basal contacts and the overall lack of fine material are interpreted to represent sheetflood fluvial deposition during repeated discharge events (Miall, 1977(Miall, , 1996(Miall, , 2006Fisher et al, 2008;Anderson et al, 1999). No clear erosive bases or higher angle crossbed sets which would point to deep, confined channels were recognised, and deposition in a non-confined braided river system is inferred (Miall, 1977(Miall, , 1996(Miall, , 2006Bridge, 1993;Bridge, 2003Bridge, , 2006.…”

Section: Ephemeral Fluvial Channelsmentioning

confidence: 99%

Sedimentology of the Essaouira Basin (Meskala Field) in context of regional sediment distribution patterns during upper Triassic pluvial events

Mader

Redfern

Ouataoui

2017

Journal of African Earth Sciences

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Section: Ephemeral Fluvial Channelsmentioning

confidence: 99%

Sedimentology of the Essaouira Basin (Meskala Field) in context of regional sediment distribution patterns during upper Triassic pluvial events

Mader

Redfern

Ouataoui

2017

Journal of African Earth Sciences

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“…The hydrofacies have a finite horizontal-correlation length, in most cases significantly greater than the vertical-correlation one (Anderson 1989;Anderson et al, 1999;Miall, 1978;Eyles et al, 1983;Keller 1996). 200…”

Section: IImentioning

confidence: 99%

Hydrofacies reconstruction of glaciofluvial aquifers and groundwater flow modelling in a densely urbanized area under changing climatic conditions

Crosta

Frattini

et al. 2017

Preprint

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Abstract. Potential impacts of global climate changes on the groundwater are largely unknown, especially for densely populated areas where groundwater is heavily exploited for public and industrial supply. Hence, to better plan and manage the 10 groundwater resources, medium-long term numerical modelling of groundwater flow, which takes into account climate change, population growth, and industrial and agricultural activities, is needed. The objective of this paper is to tackle three main issues: (1) the development of a robust hydro-stratigraphic model of a multi-aquifer system from a well logs database by means of a novel multi-dimensional approach which includes a hierarchical classification of the lithologies, the interpretation of crosssections, and the interpolation of aquifer boundary surfaces; (2) the parametrization and calibration of both a steady state and 15 a transient groundwater flow model, starting from empirical relationships (for unconfined aquifer) and step-drawdown and well tests (for semi-confined and confined aquifers) to define equivalent homogenous sub-units; and (3)

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“…Facies conductivity mean and variance and porosity values as well as characteristic length scales can be retrieved or computed from analog site studies (Brierley, 1989;Anderson et al, 1999;Bayer et al, 2011) or from shared database like wwhypda (Comunian and Renard, 2009). In this paper, all the necessary analog site data comes from the work of Jussel et al (1994) where the main structural elements of a braided river aquifer are described precisely in terms of dimensions, hydraulic conductivity distribution and porosity.…”

Section: Analog Site Datamentioning

confidence: 99%

Influence of conceptual model uncertainty on contaminant transport forecasting in braided river aquifers

Pirot

Renard

Huber

et al. 2015

Journal of Hydrology

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Keywords:Uncertainty Contaminant transport Modeling Braided river Aquifer Groundwater s u m m a r y Hydrogeologist are commonly confronted to field data scarcity. An interesting way to compensate this data paucity, is to use analog data. Then the questions of prediction accuracy and uncertainty assessment when using analog data shall be raised. These questions are investigated in the current paper in the case of contaminant transport forecasting in braided river aquifers. In using analog data from the literature, multiple unconditional geological realizations are produced following different geological conceptual models (Multi-Gaussian, Object-based, Pseudo-Genetic). These petrophysical realizations are tested in a contaminant transport problem based on the MADE-II tracer experiment dataset. The simulations show that reasonable contaminant transport predictions can be achieved using analog data. The initial concentration conditions and location regarding the conductivity heterogeneity field have a stronger influence on the plume behavior than the resulting equivalent permeability. The results also underline the necessity to include a wide variety of geological conceptual models and not to restrain parameter space exploration within each concept as long as no field data allows for conceptual model or parameter value falsification.

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Sedimentology and hydrogeology of two braided stream deposits

Cited by 111 publications

References 44 publications

Sedimentology of the Essaouira Basin (Meskala Field) in context of regional sediment distribution patterns during upper Triassic pluvial events

Sedimentology of the Essaouira Basin (Meskala Field) in context of regional sediment distribution patterns during upper Triassic pluvial events

Hydrofacies reconstruction of glaciofluvial aquifers and groundwater flow modelling in a densely urbanized area under changing climatic conditions

Influence of conceptual model uncertainty on contaminant transport forecasting in braided river aquifers

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