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| Menier, David; Mathew, Manoj; Pubellier, Manuel; Sapin, Francois; Delcaillau, Bernard; Siddiqui, Numair; Ramkumar, Mu.; Santosh, M.. |
| Empirical models have simulated the consequences of uplift and orographic-precipitation on the evolution of orogens whereas the effects of these forcings on ridgelines and consequent topography of natural landscapes remain equivocal. Here we demonstrate the feedback of a terrestrial landscape in NW Borneo subject to uplift and precipitation gradient owing to orographic effect, and leading to less-predictable flooding and irreversible damages to life and property. Disequilibrium in a large catchment recording the lowest rainfall rates in Borneo, and adjacent drainage basins as determined through., a proxy for steady-state channel elevation, is shown to result in dynamic migration of water divide from the windward-side of the orogen towards the leeward-side... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00638/75040/75697.pdf |
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| Siddiqui, Numair A.; Ramkumar, Mu.; Rahman, Abdul Hadi A.; Mathew, Manoj J.; Santosh, M.; Sum, Chow W.; Menier, David. |
| Advances in photogrammetry have eased the acquisition of high-resolution digital information from outcrops, enabling faster, non-destructive data capturing and improved reservoir modeling. Geocellularmodels for flow dynamics with in the virtual outcrop in siliciclastic deposits at different sets of sandstone facies architecture remain, however, a challenge. Digital maps of bedding, lithological contrast, spatial-temporal variations of bedding and permeability characteristics make it more easy to understand flow tortuosity in a particular architecture. An ability to precisely model these properties can improve reservoir characterization and flow modeling at different scales. Here we demonstrate the construction of realistic 2D sandstone facies based models... |
| Tipo: Text |
Palavras-chave: Siliciclastic sandstone facies; Connectivity; Heterogeneity; Digital outcrop model; Flow dynamics. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00637/74937/76048.pdf |
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