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Introduction
Additional affiliations
January 2007 - June 2017
Education
November 2003 - February 2007
September 2002 - September 2003
September 2000 - September 2003
Publications
Publications (66)
The long-standing scientific debate on whether human-derived land use change (i.e., deforestation, opening new agricultural areas, mining activities, urbanization, etc.) or climate change, which plays a pivotal role in causing soil erosion, regulating water resources, and altering hydrological cycles in Southern Hemisphere remains unresolved in the...
Following the Fukushima Daiichi Nuclear Power Plant disaster in March 2011, the Japanese government initiated an unprecedented decontamination programme to remediate 137Cs-contaminated soils and allow population return. This programme involved the removal of topsoil under farmland and residential land, and its replacement with “fresh soil” composed...
In the context of elevated concerns related to nuclear accidents and warfare, the lessons learnt from the Fukushima Daiichi Nuclear Power Plant accident in 2011 are important. In particular, Japanese authorities implemented an ambitious decontamination program to reduce the air dose rate in order to facilitate the return of the local inhabitants to...
Purpose
Fine sediment deposition is an important component of the catchment sediment budget and affects river morphology, biology, and contaminant transfer. However, the driving factors of fine sediment deposition remain poorly understood at the catchment scale, limiting our ability to model this process.
Methods
Fine sediment deposition and river...
The detrimental impacts of surface runoff and soil erosion, particularly in cultivated areas, call for the use of distributed runoff and soil erosion models with a view to supporting adapted catchment management strategies. However, runoff model parameterization remains challenging in agricultural catchments due to the high spatial and seasonal var...
The present paper contributes to bridging the gaps in modelling post-fire impact and mitigation measures on soil erosion. The specific aims were to predict the effects of forest fires and post-fire mitigation measures on runoff and specific sediment yield (SSY) in a river basin (Celone, S-E Italy). The Soil and Water Assessment Tool model, calibrat...
Forest fires change soil surface properties, alter the hydrological processes, and increase soil erosion. Post-fire rehabilitation measures are useful to mitigate the effect of fire on soil erosion. This work aims to predict the effects of forest fires and post-fire mitigation measures on runoff and specific sediment yield (SSY) in a river basin (C...
Forests provide a number of ecological and hydrological services, for instance, contributing to decreased water and sediment yields through increased infiltration and reduced soil erosion. However, forest fires can turn positive forest services into drawbacks, enhancing surface runoff and soil erosion and damaging both hillslopes and downstream aqu...
Artificial radionuclides including radiocesium (134Cs and 137Cs) and radiosilver (110mAg) were released into the environment following the Fukushima Dai-ichi nuclear power plant accident in March 2011. These particle-bound substances deposited on soils of north-eastern Japan, located predominantly within a ∼3000 km2 radioactive fallout plume and dr...
Requiring spatial and temporal quantified information on landslide hazard over a large area is a prerequisite to forecast them. However, in many cases, the quantification remains partial, because of a lack of information on the phenomena, on predisposing and triggering factors or because the scientific approaches used in research domain are complex...
Artificial radionuclides including radiocesium (134Cs and 137Cs) and radiosilver (110mAg) were released into the environment following the Fukushima Dai-ichi Nuclear Power Plant accident in March 2011. These particle-bound substances deposited on soils of Northeastern Japan located predominantly within a ~3000 km2 radioactive fallout plume and drai...
Intensification of agricultural practices during the second half of the 20th century has accelerated of soil erosion around the world. Although this phenomenon has been widely investigated through a combination of monitoring or modelling at short timescales (<10 years), few records are available for reconstructing the trajectory of soil erosion dur...
Several studies have shown that global changes have important impacts in mountainous areas, since they affect natural hazards induced by hydrometeorological events such as landslides. The present study evaluates, through an innovative method, the influence of both vegetation cover and climate change on landslide hazards in a Pyrenean valley from th...
Forest fires change soil surface properties, alter the hydrological processes, and increase soil erosion. Post-fire rehabilitation measures are useful to mitigate the effect of fire on soil erosion. This work aims to predict the effects of forest fires and post-fire mitigation measures on runoff and specific sediment yield (SSY) in a river basin (C...
Le ruissellement est un phénomène épisodique et localisé, donc difficile à mesurer. Il résulte de l'interaction de nombreux facteurs, dont les caractéristiques intrinsèques et de surface du sol, la morphologie du bassin versant, mais également les caractéristiques pluviométriques. Afin d'améliorer la compréhension de la genèse et de la propagation...
Soil erosion, runoff and sediment connectivity are strongly impacted by anthropogenic features in lowland agricultural catchments. Among these landscape features, the role played by tile drainage on water and sediment transfers and hillslope-to-river connectivity in drained catchments remains poorly understood. This study quantified water and sedim...
Soil erosion on agricultural land is associated with deleterious off-site impacts including the siltation andthe pollution of the receiving water bodies. To better manage this situation, local/regional water agencies needspatially-distributed information to compare the sensitivity to erosion of the areas draining into these water bodiesand supplyin...
The increasing evolution of urban areas in landslide-prone regions and the modification of precipitation due to global climate change have led to a growing need for landslide hazard assessment (LHA) for local land management and security services. LHA is based on the definition of the spatial and temporal probability of landslide occurrences and is...
Long‐term records are needed to investigate the impact of extreme events in the current framework of global change. Sedimentary reconstruction with a high resolution remains difficult without conducting expensive, destructive and/or time‐consuming analyses. In this study, high resolution CT‐scan profiles (0.6 mm resolution) were used to investigate...
Abandonment of agricultural land is widespread in many developed countries. These surfaces are projected to increase significantly worldwide during the 21th century. Identifying potential relationships between land abandonment and soil erosion dynamics over the long term (100 years) is therefore essential for predicting the environmental consequenc...
Les instabilités gravitaires (i.e. glissements de terrain) sont des déplacements d’une masse de matériaux cohérents le long d’une surface de rupture sous l’effet de la gravité. Phénomènes multiples et complexes, ils peuvent être ponctuels, superficiels, lents, limités dans l’espace et dans le temps mais également rapides, et de grande ampleur affec...
Better understanding the pathways through which future socioeconomic changes might influence land use and land cover changes (LULCCs) is a crucial step in accurately assessing the resilience of societies to mountain hazards. Participatory foresight involving local stakeholders may help building fine-scale LULCC scenarios that are consistent with th...
Core Ideas
Discharge and sediment concentrations were measured in a drained catchment.
The impact of tile drainage at the catchment scale was analyzed with a nested approach.
The major part of sediment fluxes occurred during winter floods.
Sediment transfer in the tile drain was episodic although significant.
Soil erosion and sediment transfer are...
A number of different onsets of the Anthropocene Epoch have been proposed in the literature reflecting the different disciplines and criteria regarding when human activities first began to play an important role in shaping the earth’s ecosystems. In this study we focus our research on the sedimentological and geomorphological responses of earth eco...
Assess the role of water as a landslide triggering factor is one of the challenges in landslide risk and susceptibility assessment. Indeed, the saturation of the materials can influence the slope stability conditions. This is particularly true in the case of the slope of Normandy covered by different types of surficial materials with thickness vary...
Open image in new windowGlobal changes would have impacts worldwide, but their effects should be even more exacerbated in areas particularly vulnerable. Mountainous areas are among these vulnerable territories. In order to estimate the capacity of such mountainous valleys to face global changes (climate, but also climate- and human- induced land-us...
Physically based model may be used to assess landslide susceptibility over large areas. However, majority of case studies are applied for complex phenomena for a one event, a little site or over large areas when landslides have simple geometry and environmental conditions are homogeneous. Thus, assessing landslide prone areas for different type of...
Landslide hazard and risk assessment (LHA & LRA) in French West Indies is a big challenge, because of several factors contributing to high sensitivity of slopes to landslide (complex weathered volcanic grounds, hurricane seasons, heavy land pressure).The initial step is to assess the spatial probability (and sometimes temporal) of failure (i.e. lan...
Landslide hazard assessment (LHA) estimates the landslide probability occurrence in a territory within a reference period for a given intensity. It is deduced from information on: (i)The landslide susceptibility expressed as the potential initiation of phenomena based on the spatial correlation between landslide initiation areas observed in a terri...
Landslide hazard and risk assessment (LHA & LRA) in French West Indies is a big challenge, because of several factors contributing to high sensitivity of slopes to landslide (complex weathered volcanic grounds, hurricane seasons, heavy land pressure, [1]).The initial step is to assess the spatial probability (and sometimes temporal) of failure (i.e...
Landslide hazard and risk assessment (LHA & LRA) in French West Indies is a big challenge, because of several factors contributing to high sensitivity of slopes to landslide (complex weathered volcanic grounds, hurricane seasons, heavy land pressure, [1]).The initial step is to assess the spatial probability (and sometimes temporal) of failure (i.e...
Following the shift towards more intensive agriculture in cultivated lowlands in Europe, field sizes have increased and stream valley meanderings have been suppressed and realigned along new straight field borders. These modifications have led to profound alterations of the hydromorphology of the streams. To test the importance of these modificatio...
The long‐term and current volumes of sediment exported from stream banks were calculated as
potential sources of sediment in a large pond located at the catchment outlet of a small agricultural
lowland basin strongly affected by anthropogenic pressure in France. Bank erosion was
measured over a short period using a network of erosion pins along a s...
Landslide hazard and risk assessment (LHA & LRA) in French West Indies is a big challenge, because of several factors contributing to high sensitivity of slopes to landslide (complex weathered volcanic grounds, hurricane seasons, heavy land pressure, [1]).The initial step is to assess the spatial probability (and sometimes temporal) of failure (i.e...
Global changes would have impacts worldwide, but their effects should be even more exacerbated in areas particularly vulnerable. Mountainous areas are among these vulnerable territories. Ecological systems are often at a fragile equilibrium, socio-economical activities are often climate-dependent and climate-driven natural hazards can be a major th...
Landslide hazard assessment is the estimation of a target area where landslides of a particular type, volume, runout and intensity may occur within a given period. The first step to analyze landslide hazard consists in assessing the spatial and temporal failure probability (when the information is available, i.e. susceptibility assessment). Two typ...
Global changes would have direct impacts on landslide activities through the modifications of triggering events with the evolutions of climate forcing. Howev-er, some predisposing factors would also evolve. Indeed, forests are likely to be modified, either by anthropogenic interventions, natural ageing or adaptation to climate change. This evolutio...
In France, since the beginning of 20th century, rural landscapes have been completely modified by human activities. These practices have resulted in profound sedimentary and morphological alterations (channel bed incision, deposition of fine sediment, bank erosion, etc.), detrimental to the achievement of good water status. Several research efforts...
In France, exceptional periods of rainfall deficit (1976, 1989 to 1991
and 1996 to 1997) have caused damages to houses due to their
vulnerability to shrinking and swelling clays phenomenon. Between 1998
and 2010, BRGM has been producing a national hazard map related to
shrinking and swelling clays, built by crossing geological data and
information...
The aim of this work is to develop a methodology to integrate global
changes scenarios into quantitative risk assessment. This paper
describes a methodology to take into account effects of changing climate
on landslides activity and impacts of social changes on exposure to
provide a complete evaluation of risk for given scenarios. This approach
is...
The aim of this work is to develop a methodology for integrating climate change scenarios into quantitative hazard assessment and especially their precipitation component. The effects of climate change will be different depending on both the location of the site and the type of landslide considered. Indeed, mass movements can be triggered by differ...
The aim of this work is to develop a methodology for integrating climate
change scenarios into quantitative hazard assessment and especially
their precipitation component. The effects of climate change will be
different depending on both the location of the site and the type of
landslide considered. Indeed, mass movements can be triggered by
differ...
The Ballandaz landslide (Le Planay, France) has been studied for years. Geotechnical characterization, geophysical surveys and geomechanical modelling have been performed to characterize its behaviour, but these different approaches were not deeply analysed in a common way. This work aims to study what kind of contributions geophysical data could p...
Estimating soils geomechanical behavior interest numerous applications dealing with natural hazards, landscape management or terrestrial vehicles mobility. These applications need most of the time high time reactivity in producing decision-making maps, a strong input data availability and a spatial resolution in the order of decametric scale. This...
Coastal cliffs are ubiquitous landforms around the world and cliff recession is a major subject of concern to coastal communities. These elements argue for a better understanding of processes occurring along coastal cliffs. The purpose of the study is to carefully describe the phenomenology of erosion on an evolving chalk coastline. Six repeated te...
The outcrops of Bevons, Nyons and Rosans in south-eastern France, like the Numidian ones (Sicily, Tunisia,Morocco...) or Tourelle ones (Canada) are excellent spots for the observation of many sandy injectites supplied by turbiditic channels. Two types of injectites are present: sills (horizontal) and dykes (vertical), dykes resulting from sills. De...
