Výsledky vyhledávání - "Axel Ehrhold"

Characterization of gas‐bearing sediments in coastal environment using geophysical and geotechnical data

Autor: Judith Dusart, Pascal Tarits, Maud Fabre, Bruno Marsset, Gwenaël Jouet, Axel Ehrhold, Vincent Riboulot, Agnès Baltzer

Publikováno v: Near Surface Geophysics (1569-4445) (Wiley), 2022-10, Vol. 20, N. 5, P. 478-493
Near Surface Geophysics
Near Surface Geophysics, 2022, 20, pp.478-493. ⟨10.1002/nsg.12230⟩

International audience; Seismic investigation in marine gas-bearing sediments fails to get information below the acoustic mask created by free gas. To circumvent this problem, we combined collocated multichannel ultra-high resolution seismic imaging,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba2d9bae5fd7b3d4b1e3351a4b08d5cd
https://archimer.ifremer.fr/doc/00783/89484/

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Sponge contribution to the silicon cycle of a diatom‐rich shallow bay

Autor: Axel Ehrhold, Cèlia Sitjà, Manuel Maldonado, Jacques Grall, Fiz Fernandez Perez, Aude Leynaert, Maria Lopez-Acosta, Cristina Galobart

Publikováno v: Limnology and Oceanography
Limnology and Oceanography, 2022, 67, pp.2431-2447. ⟨10.1002/lno.12211⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
Limnology And Oceanography (0024-3590) (Wiley), 2022-11, Vol. 67, N. 11, P. 2431-2447

In coastal systems, planktonic and benthic silicifiers compete for the pool of dissolved silicon, a nutrient required to make their skeletons. The contribution of planktonic diatoms to the cycling of silicon in coastal systems is often well character

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4aa8a75879e011d6b20cf68eeddb5bb6
https://hal.univ-brest.fr/hal-04158535/document

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Multi-temporal analysis of submarine sand dunes morphodynamics (Bay of Brest, Brittany, France): A marker of sediment pathways in a macrotidal environment open to sea swells

Autor: Déborah Belleney, Axel Ehrhold, Nicolas Le Dantec, Pascal Le Roy, Gwenael Jouet

Publikováno v: Estuarine Coastal And Shelf Science (0272-7714) (Elsevier BV), 2022-09, Vol. 274, P. 107911 (11p.)

Sediment structures including submarine banks and dune fields are ubiquitous on tide-dominated continental inner shelves such as in the Iroise Sea. These are of current interest to human activities in several respects: they constitute an obstacle to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::533c3465a2fc2042e7caf69520e53728
https://archimer.ifremer.fr/doc/00773/88458/

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Numerical modelling of tidal sediment dynamics in the Bay of Brest over the Holocene: How the use of a process-based model over paleoenvironmental reconstitutions can help understand long-term tidal deposits?

Autor: Matthieu Guillaume Olivier, Estelle Leroux, Didier Granjeon, Pierre Le Hir, Marina Rabineau, Pascal Le Roy, Laure Simplet, Axel Ehrhold, Héloïse Muller

Publikováno v: Estuarine, Coastal and Shelf Science. 285:108309

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2484a2d301cefa1dcb555a92db74b46b
https://doi.org/10.1016/j.ecss.2023.108309

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Fossil maerl beds as coastal indicators of late Holocene palaeo-environmental evolution in the Bay of Brest (Western France)

Autor: Clément Lambert, Pascal Le Roy, Angélique Roubi, Muriel Vidal, Jacques Grall, Axel Ehrhold, Théo Reixach, Gwenael Jouet, Gwendoline Gregoire, Raffaele Siano, Aurélie Penaud, Jérôme Goslin, Stephan J. Jorry

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology
Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2021, 577, pp.110525. ⟨10.1016/j.palaeo.2021.110525⟩
Palaeogeography Palaeoclimatology Palaeoecology (0031-0182) (Elsevier BV), 2021-09, Vol. 577, P. 110525 (25p.)

International audience; The Bay of Brest (BB) is a mixed, tide-dominated estuarine system. The shore terraces of this bay are occupied by modern free-living (calcareous) coralline algae locally termed “maerl”, organized in bed-like morphologies (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::435ef37df72162f55876979e1831d039
https://hal.univ-brest.fr/hal-03325041

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Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution

Autor: Nicolas Briant, Véronique Loizeau, Kenneth Neil Mertens, Clément Lambert, Laure Quintric, Cyril Noël, Patrick Durand, Marie Latimier, Raffaele Siano, Sabine Schmidt, Pierre Cuzin, Malwenn Lassudrie, Aurélie Penaud, Axel Ehrhold, Julien Quere

Publikováno v: Current Biology (0960-9822) (Elsevier BV), 2021-06, Vol. 31, N. 12, P. 2682-2689.e7
Current Biology-CB
Current Biology-CB, Elsevier, 2021, ⟨10.1016/j.cub.2021.03.079⟩
Current Biology-CB, 2021, ⟨10.1016/j.cub.2021.03.079⟩

To evaluate the stability and resilience1 of coastal ecosystem communities to perturbations that occurred during the Anthropocene,2 pre-industrial biodiversity baselines inferred from paleoarchives are needed.3,4 The study of ancient DNA (aDNA) from

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78e2203c0a7b67be85d8ca0f3897d69f
https://archimer.ifremer.fr/doc/00690/80195/

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Status of Basement Terranes in Orogens: Insights From the Cadomian Domain of the North Armorican Variscides, Western France

Autor: Anne Duperret, Bernard Le Gall, Christine Authemayou, David Graindorge, Thierry Schmitt, Tassadit Kaci, Axel Ehrhold

Publikováno v: Tectonics (0278-7407) (American Geophysical Union (AGU)), 2021-05, Vol. 40, N. 5, P. e2020TC006578 (25p.)

The stable vs mobile behaviour of basement terranes in orogens is discussed about the North Armorican Cadomian‐floored domain (NAD) in the Armorican Variscides, Western France. Our onshore/offshore structural study demonstrates the heterogeneous na

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bf5e30a25347dccf6ce7210f2098ade
https://doi.org/10.1029/2020tc006578

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Revival of ancient marine dinoflagellates using molecular biostimulation

Autor: Axel Ehrhold, Marie Latimier, Sabine Schmidt, Gaspard Delebecq, Raffaele Siano

Publikováno v: Journal of Phycology
Journal of Phycology, Wiley, 2020, 56 (4), pp.1077-1089. ⟨10.1111/jpy.13010⟩
Journal Of Phycology (0022-3646) (Wiley), 2020-08, Vol. 56, N. 4, P. 1077-1089

International audience; The biological processes involved in the preservation, viability, and revival of long‐term dormant dinoflagellate cysts buried in sediments remain unknown. Based on studies of plant seed physiology, we tested whether the rev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5400b497bf7d084adca2fa8ea68d14c
https://hal.archives-ouvertes.fr/hal-02610719

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The Aquitaine Shelf Edge (Bay of Biscay): A Primary Outlet for Microbial Methane Release

Autor: Marc Lescanne, J. Saout, Axel Ehrhold, Stéphanie Dupré, André Ogor, C. Breton, J. Floodpage, Livio Ruffine, R. Biville, Catherine Pierre, Carla Scalabrin, Benoît Loubrieu, Charline Guerin, E. Gautier

Publikováno v: Geophysical Research Letters
Geophysical Research Letters, 2020, 47 (7), ⟨10.1029/2019gl084561⟩
Geophysical Research Letters, American Geophysical Union, 2020, 47 (7), ⟨10.1029/2019gl084561⟩
Geophysical Research Letters (0094-8276) (American Geophysical Union (AGU)), 2020-04, Vol. 47, N. 7, P. e2019GL084561 (10p.)

International audience; A few thousand (2,612) seeps are releasing microbial methane bubbles from the seafloor at the Aquitaine Shelf edge (Bay of Biscay) at shallow water depths (140-220 m). This methane contributes to the formation of meter-scale s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::894475cea536a484e2c68ee639419e2c
https://hal.science/hal-03147369/document

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Characterization of Shallow Gas in Coastal Environment Using Jointly Marine ERT and UHR Seismic Imaging

Autor: B. Marsset, P. Tarits, Gwenael Jouet, M. Fabre, A. Lepot, J. Flamme, Axel Ehrhold

Publikováno v: NSG2020 4th Applied Shallow Marine Geophysics Conference.

Summary Marine shallow gas characterization challenges industrial and academic research. Shallow gas are a risk for marine infrastructures and a limit to penetration of seismic methods to retrieve information on geological features and soil propertie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d31a56740b8eb8f4a5773d72a2930512
https://doi.org/10.3997/2214-4609.202020046

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