Spatial analysis of the French Pleistocene permafrost by a GIS database

Andrieux, Eric; Bertrán, Pascal; Saitô, Kazuyuki

doi:10.1002/ppp.1856

Cited by 62 publications

(85 citation statements)

References 46 publications

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“…In this case, the RCM is able to simulate the southern permafrost margin much more realistically than the GCM . Much effort is currently underway to improve this interpretation and refine field data for the LGM permafrost extent . Thus, the simulated permafrost distribution is an additional convincing example for the benefit of the higher resolution output of RCMs.…”

Section: The Last Glacial Maximummentioning

confidence: 99%

Perspectives of regional paleoclimate modeling

Ludwig

Gómez-Navarro

Pinto

et al. 2018

Annals of the New York Academy of Sciences

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Regional climate modeling bridges the gap between the coarse resolution of current global climate models and the regional-to-local scales, where the impacts of climate change are of primary interest. Here, we present a review of the added value of the regional climate modeling approach within the scope of paleoclimate research and discuss the current major challenges and perspectives. Two time periods serve as an example: the Holocene, including the Last Millennium, and the Last Glacial Maximum. Reviewing the existing literature reveals the benefits of regional paleo climate modeling, particularly over areas with complex terrain. However, this depends largely on the variable of interest, as the added value of regional modeling arises from a more realistic representation of physical processes and climate feedbacks compared to global climate models, and this affects different climate variables in various ways. In particular, hydrological processes have been shown to be better represented in regional models, and they can deliver more realistic meteorological data to drive ice sheet and glacier modeling. Thus, regional climate models provide a clear benefit to answer fundamental paleoclimate research questions and may be key to advance a meaningful joint interpretation of climate model and proxy data.

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Section: The Last Glacial Maximummentioning

confidence: 99%

Perspectives of regional paleoclimate modeling

Ludwig

Gómez-Navarro

Pinto

et al. 2018

Annals of the New York Academy of Sciences

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“…The type 2 involutions are discontinuous and the other periglacial features would require frequent alternating conditions of freezing and thawing and/or long‐term and deep seasonal freezing . The thickness of the cryogenically affected layer, as inferred from the distribution of involutions and frost jacking in the soil profiles, is on average 1.8 m. In Europe, the latitudinal limit of deep seasonal frost for flat areas in France has been suggested at 43°N, although small‐scale or isolated cryoturbations occur in areas without permafrost that are subject to seasonal frost . We therefore propose deep seasonal frost conditions, and not a continuous periglacial environment, as the main driver of the cryopedogenic features described.…”

Section: Discussionmentioning

confidence: 79%

Relict periglacial soils on Quaternary terraces in the Central Ebro Basin (NE Spain)

Rodríguez‐Ochoa

Olarieta

Santana

et al. 2019

Permafrost & Periglacial

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Pedofeatures associated with ancient cold climatic conditions have been recognized in soils on terraces in the Monegros area (central Ebro Basin, Spain), at a latitude of 41°49′N and an altitude of 300 m a.s.l. Eleven soil profiles were described on fluvial deposits corresponding to the most extensive terrace (T5) of the Alcanadre River, Middle Pleistocene in age (MIS8–MIS7). Each soil horizon was sampled for physical, chemical, mineralogical and micromorphological analyses. Macromorphological features related to pedocryogenic processes were described: involutions, jacked stones, shattered stones, detached and vertically oriented carbonatic pendents, fragmented carbonatic crusts, laminar microstructures, succitic fabric, silt cappings on rock fragments and aggregates, and irregular, broken, discontinuous and deformed gravel and sandy pockets. Accumulations of Fe–Mn oxides, dissolution features on the surface of carbonatic stones, and calcitic accumulations were identified related to vadose–phreatic conditions. The observed periglacial features developed under cold environmental conditions in exceptional geomorphic and hydrological conditions. This soil information may have potential implications in studies of paleoclimate in the Ebro Valley as well as in other Mediterranean areas.

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“…A – Simplified lithological map of France (BRGM) and location of patterned ground and involutions; B – Location of the epicentres of the earthquakes of magnitude Mw > 2 recorded between 1962 and 2009 (catalogue SI‐hex 2014; Cara et al , ); C – Main faults (BRGM, www.Onegeology.Org, with some additions) and location of the palaeoseismic evidence considered as possible or certain (NEOPAL, BRGM, 2009); D – Location of Pleistocene ice‐wedge (i‐w) pseudomorphs, sand wedges, composite‐wedge (c‐w) pseudomorphs and polygons (Andrieux et al , , with some additions). [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

Pleistocene Involutions and Patterned Ground in France: Examples and Analysis Using a GIS Database

Bertrán

Andrieux

Antoine

et al. 2017

Permafrost & Periglacial

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A georeferenced database is used to analyse the distribution of Quaternary soft‐sediment deformation structures across France. They include features visible in aerial photographs (soil stripes and cells) and features described in cross‐section (involutions). Overall, there is no clear relation between the distribution of features and the locations of known faults and earthquakes in available databases. In contrast, the distribution agrees with that of Pleistocene periglacial structures. Most of the soil stripes and cells are located north of 47.5°N, i.e. in the zone of ice‐wedge pseudomorphs, and can be interpreted as deformation structures of an active layer in permafrost terrain. The height of the involutions is influenced by the nature of the filling, the substrate and latitude. Deformation structures are larger in coarse material, reflecting the role of drainage and thermal conductivity. Their height increases northward to ca. 2 m at 48°N. This is thought to reflect the increase in thickness of the layer subjected to freeze–thaw cycles. Bowl‐shaped structures separated by coarse pillars, which correspond to soil stripes seen in section, have formed on slopes in settings unfavourable to the generation of high pore‐water pressure. Their genesis is probably related to differential frost heave. Ball‐and‐pillow structures and diapirs are common in flat and poorly drained terrain, and formed by liquefaction and sometimes fluidisation in a periglacial setting. Copyright © 2017 John Wiley & Sons, Ltd.

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Spatial analysis of the French Pleistocene permafrost by a GIS database

Cited by 62 publications

References 46 publications

Perspectives of regional paleoclimate modeling

Perspectives of regional paleoclimate modeling

Relict periglacial soils on Quaternary terraces in the Central Ebro Basin (NE Spain)

Pleistocene Involutions and Patterned Ground in France: Examples and Analysis Using a GIS Database

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