References of "Demoulin, Alain"
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See detailLandslides in Belgium: two case studies in the Flemish Ardennes and the Pays de Herve
Dewitte, O.; Van den Eeckhaut, M.; Poesen, J. et al

in Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailThe Flemish Valley: Response of the Scheldt drainage system to climatic and glacio-eustatic oscillations
Heyse, I.; Demoulin, Alain ULiege

in Demoulin, Alain (Ed.) Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailMorphotectonics and past large earthquakes in eastern Belgium
Vanneste, K.; Camelbeeck, T.; Verbeeck, K. et al

in Demoulin, Alain (Ed.) Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailThe picturesque Ardennian valleys: Plio-Quaternary incision of the drainage system in the uplifting Ardenne
Rixhon, Gilles; Demoulin, Alain ULiege

in Demoulin, Alain (Ed.) Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailThe periglacial ramparted depressions of the Hautes Fagnes Plateau: traces of Late Weichselian lithalsas
Demoulin, Alain ULiege; Houbrechts, Geoffrey ULiege; Juvigné, Etienne ULiege

in Demoulin, Alain (Ed.) Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailA unique boulder-bed reach of the Amblève River, Ardenne, at Fonds de Quarreux: Modes of boulder transport
Houbrechts, Geoffrey ULiege; Petit, François ULiege; Van Campenhout, Jean ULiege et al

in Demoulin, Alain (Ed.) Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailErosion surfaces in the Ardenne-Oesling and their associated kaolinic weathering mantle
Demoulin, Alain ULiege; Barbier, F.; Deconinck, A. et al

in Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailThe climate of Belgium and Luxembourg
Erpicum, Michel ULiege; Nouri, Meryem ULiege; Demoulin, Alain ULiege

in Demoulin, Alain (Ed.) Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailMorphogenic setting and diversity of processes and landforms: The geomorphological regions of Belgium
Demoulin, Alain ULiege

in Demoulin, Alain (Ed.) Landscapes and landforms of Belgium and Luxembourg (2018)

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See detailLandscapes and landforms of Belgium and Luxembourg
Demoulin, Alain ULiege

Book published by Springer (2018)

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See detailConstraints on Landslide-Climate Research Imposed by the Reality of Fieldwork in Central Africa
Monsieurs, Elise ULiege; Kirschbaum, Dalia B.; Thiery, Wim et al

in Association of Environmental and Engineering Geologists (CC BY-NC 4.0) (2017, June 05)

Climate change is reported to be ‘very likely’ associated with an increasing trend in extreme rainfall intensity over the tropics. Its impact on the timing of landslide initiation however remains poorly ... [more ▼]

Climate change is reported to be ‘very likely’ associated with an increasing trend in extreme rainfall intensity over the tropics. Its impact on the timing of landslide initiation however remains poorly understood. Central Africa, located in the tropics, has repeatedly been highlighted as lacking landslide catalogs and landslide-climate studies. We present a research approach, adapted to the data-poor context of Central Africa, to study regional rainfall controls on landslides conditioned by climate change. Preliminary results are presented, including a description of the current rain gauge network installed, an inventory of 83 landslide events with known date and location, and a case study of a landslide occurrence. We show that the underrepresentation of Central Africa in current landslide-climate research is related to the dearth of adequate rainfall ground monitoring networks and spatiotemporal data on landslide occurrence, rather than to the lack of landslide occurrence. Research constraints imposed by the context of Central Africa are highlighted. In presenting this challenging research setting, our aim is not to discourage research in the region, but to identify lessons learned from previous field work and emphasize the abundant opportunities inviting natural hazard studies in Central Africa. [less ▲]

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See detailIntegrated geological-geophysical models of unstable slopes in seismogenic areas in NW and SE Europe
Mreyen, Anne-Sophie ULiege; Micu, Mihai; Onaca, Alexandru et al

Poster (2017, April)

We will present a series of new integrated 3D models of landslide sites that were investigated in distinctive seismotectonic and climatic contexts: (1) along the Hockai Fault Zone in Belgium, with the ... [more ▼]

We will present a series of new integrated 3D models of landslide sites that were investigated in distinctive seismotectonic and climatic contexts: (1) along the Hockai Fault Zone in Belgium, with the 1692 Verviers Earthquake (M 6 - 6.5) as most prominent earthquake that occurred in that fault zone and (2) in the seismic region of Vrancea, Romania, where four earthquakes with Mw > 7.4 have been recorded during the last two centuries. Both sites present deep-seated failures located in more or less seismically active areas. In such areas, slope stability analyses have to take into account the possible contributions to ground failure. Our investigation methods had to be adapted to capture the deep structure as well as the physico-mechanical characteristics that influence the dynamic behaviour of the landslide body. Field surveys included electrical resistivity tomography profiles, seismic refraction profiles (analysed in terms of both seismic P-wave tomography and surface waves), ambient noise measurements to determine the soil resonance frequencies through H/V analysis, complemented by geological and geomorphic mapping. The H/V method, in particular, is more and more used for landslide investigations or sites marked by topographic relief (in addition to the more classical applications on flat sites). Results of data interpretation were compiled in 3D geological-geophysical models supported by high resolution remote sensing data of the ground surface. Data and results were not only analysed in parallel or successively; to ensure full integration of all inputs-outputs, some data fusion and geostatistical techniques were applied to establish closer links between them. Inside the 3D models, material boundaries were defined in terms of surfaces and volumes. Those models were used as inputs for 2D dynamic numerical simulations completed with the UDEC (Itasca) software. For some sites, a full back-analysis was carried out to assess the possibility of a seismic triggering of the landslides. [less ▲]

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See detailGeomorphometric dating of uplift: The case of the NW European foreland of the Alpine arc
Demoulin, Alain ULiege; Bourdon, Hadrien

Conference (2017)

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See detailPlio-Quaternary river incision rates inferred from burial dating (Al-26/Be-10) of in cave-deposited alluvium in the Meuse catchment (E Belgium): new insights into the uplift history of the Ardennes massif
Rixhon, Gilles; Bourlès, Didier; Braucher, Régis et al

in Geophysical Research Abstracts (2017), 19

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See detailFluvial archives, a valuable record of vertical crustal deformation
Demoulin, Alain ULiege; Mather, Anne; Whittaker, Alexander

in Quaternary Science Reviews (2017)

The study of drainage network response to uplift is important not only for understanding river system dynamics and associated channel properties and fluvial landforms, but also for identifying the nature ... [more ▼]

The study of drainage network response to uplift is important not only for understanding river system dynamics and associated channel properties and fluvial landforms, but also for identifying the nature of crustal deformation and its history. In recent decades, geomorphic analysis of rivers has proved powerful in elucidating the tectonic evolution of actively uplifting and eroding orogens. Here, we review the main recent developments that have improved and expanded qualitative and quantitative information about vertical tectonic motions (the effects of horizontal deformation are not addressed). Channel long profiles have received considerable attention in the literature, and we briefly introduce basic aspects of the behaviour of bedrock rivers from field and numerical modelling perspectives, before describing the various metrics that have been proposed to identify the information on crustal deformation contained within their steady-state characteristics. Then, we review the literature dealing with the transient response of rivers to tectonic perturbation, through the production of knickpoints propagating through the drainage network. Inverse modelling of river profiles for uplift in time and space is also shown to be very effective in reconstructing regional tectonic histories. Finally, we present a synthetic morphometric approach for deducing the tectonic record of fluvial landscapes. As well as the erosional imprint of tectonic forcing, sedimentary deposits, such as fluvial terrace staircases, are also considered as a classical component of tectonic geomorphology. We show that these studies have recently benefited from rapid advances in dating techniques, allowing more reliable reconstruction of incision histories and estimation of incision rates. The combination of progress in the understanding of transient river profiles and larger, more rigorous data sets of terrace ages has led to improved understanding of river erosion and the implications for terrace profile correlation, i.e., extrapolation of local data to entire profiles. Finally, planform changes in fluvial systems are considered at the channel scale in alluvial rivers and regional level in terms of drainage reorganisation. Examples are given of how numerical modelling can efficiently combine with topographic data to shed new light on the (dis)equilibrium state of drainage systems across regional drainage divides. [less ▲]

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See detailCharacteristics and frequency of large submarine landslides at the western tip of the Gulf of Corinth
Beckers, Arnaud; Hubert, Aurelia ULiege; Beck, Christian et al

in Geophysical Research Abstracts (2016), 18

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See detailA first database for landslide studies in densely urbanized areas of the intertropical zone: Abidjan, Côte d’Ivoire
Gnagne, Lorng Frédéric ULiege; Demoulin, Alain ULiege; Biemi, Jean et al

in Geophysical Research Abstracts (2016), 18

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See detailGeomorphometric mapping of spatio-temporal changes in Plio-Quaternary uplift in the NW European Alpine foreland
Demoulin, Alain ULiege; Bourdon, Hadrien

in Geophysical Research Abstracts (2016), 18

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