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Akademický článek

Size, shape and orientation matter: fast and semi-automatic measurement of grain geometries from 3D point clouds

Autor: P. Steer, L. Guerit, D. Lague, A. Crave, A. Gourdon

Publikováno v: Earth Surface Dynamics, Vol 10, Pp 1211-1232 (2022)

The grain-scale morphology and size distribution of sediments are important factors controlling the erosion efficiency, sediment transport and the aquatic ecosystem quality. In turn, characterizing the spatial evolution of grain size and shape can he

Externí odkaz: https://doaj.org/article/84ded0372d7749eca0b8e6b77b0a67c3

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Akademický článek

Uniform grain-size distribution in the active layer of a shallow, gravel-bedded, braided river (the Urumqi River, China) and implications for paleo-hydrology

Autor: L. Guerit, L. Barrier, Y. Liu, C. Narteau, E. Lajeunesse, E. Gayer, F. Métivier

Publikováno v: Earth Surface Dynamics, Vol 6, Pp 1011-1021 (2018)

The grain-size distribution of ancient alluvial systems is commonly determined from surface samples of vertically exposed sections of gravel deposits. This method relies on the hypothesis that the grain-size distribution obtained from a vertical

Externí odkaz: https://doaj.org/article/38b3a003b68e481e8ff6ef319bb7c9b3

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Akademický článek

The Grain-size Patchiness of Braided Gravel-Bed Streams – example of the Urumqi River (northeast Tian Shan, China)

Autor: L. Guerit, L. Barrier, C. Narteau, F. Métivier, Y. Liu, E. Lajeunesse, E. Gayer, P. Meunier, L. Malverti, B. Ye

Publikováno v: Advances in Geosciences, Vol 37, Pp 27-39 (2014)

In gravel-bed rivers, sediments are often sorted into patches of different grain-sizes, but in braided streams, the link between this sorting and the channel morpho-sedimentary elements is still unclear. In this study, the size of the bed sediment in

Externí odkaz: https://doaj.org/article/ec774782d9f2475c9303ce95adf0192c

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Akademický článek

Reconstructing the Late Palaeozoic – Mesozoic topographic evolution of the Chinese Tian Shan: available data and remaining uncertainties

Autor: M. Jolivet, G. Heilbronn, C. Robin, L. Barrier, S. Bourquin, Zh. Guo, Y. Jia, L. Guerit, W. Yang, B. Fu

Publikováno v: Advances in Geosciences, Vol 37, Pp 7-18 (2013)

The topographic evolution of continents and especially the growth and dismembering of mountain ranges plays a major role in the tectonic evolution of orogenic systems, as well as in regional or global climate changes. A large number of studies have c

Externí odkaz: https://doaj.org/article/6779d74b39de48df858cf80f17bae523

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Thickness of Fluvial Deposits Records Climate Oscillations

Autor: X. P. Yuan, L. Guerit, J. Braun, D. Rouby, C. M. Shobe

Publikováno v: Journal of Geophysical Research : Solid Earth
Journal of Geophysical Research : Solid Earth, 2022, 127 (4), pp.e2021JB023510. ⟨10.1029/2021JB023510⟩
Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2022, 127 (4), pp.e2021JB023510. ⟨10.1029/2021JB023510⟩
Journal of Geophysical Research: Solid Earth

Fluvial deposits offer Earth’s best‐preserved geomorphic record of past climate change over geological timescales. However, quantitatively extracting this information remains challenging in part due to the complexity of erosion, sediment transpor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18a7f891a9b87fb92fb9f32677581bab
https://insu.hal.science/insu-03747061

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