About
284
Publications
57,403
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,865
Citations
Citations since 2017
Publications
Publications (284)
Water takes part in most physical processes that shape the mountainous periglacial landscapes and initiation of mass wasting. 10 An observed increase in rockfall activity in several mountainous regions was previously linked to permafrost degradation in high mountains, and water that infiltrates into rock fractures is one of the likely drivers of th...
Ice aprons are poorly studied and not well-defined thin ice bodies adhering to high altitude steep rock faces, but are present in most Alpine-type high mountain environments worldwide. This study aims to precisely define ice aprons based on a detailed analysis of their topographical characteristics in the Mont Blanc massif (western European Alps)....
Ice aprons (IAs) are part of the critical components of the Alpine
cryosphere. As a result of the changing climate over the past few decades,
deglaciation has resulted in a surface decrease of IAs, which has not yet
been documented, except for a few specific examples. In this study, we
quantify the effects of climate change on IAs since the mid-20t...
We studied a newly identified, multiple-kilometer-long rock slope failure in the Aiguilles Rouges massif (Chamonix valley, France). Owing to a high-resolution light detection and ranging (LiDAR) digital elevation model (DEM) and field work, we mapped morphostructures, including scarps, open fractures, and counterscarps. In some places, vertical off...
This paper focuses on understanding the temporal behaviour
of Ice Aprons (IAs) in the Mont-Blanc massif using high resolution
SAR coherence matrix. InSAR coherence is estimated
between all possible pairs of TerraSAR-X images acquired
in 2009 and 2011 as well as between PAZ images acquired in
2020, both at 11-day interval. The results show that cohe...
On glaciers, the snow bridges that form above crevasses have hardly been considered by researchers up to now, despite their importance for high mountain activities (skiing, mountaineering) and the risks that their possible failure poses to practitioners. In order to improve our understanding of the formation and evolution of these fragile snow stru...
This paper investigates the backscatter evolution and surface changes of ice aprons (IAs) by exploiting time series of X-and C-band SAR images from PAZ and Sentinel-1 satellites. IAs are extremely small ice bodies of irregular shape present on steep slopes and complex topographies in all the major high-Alpine environments of the world. Due to their...
Ice aprons (IAs) are part of the critical components of the Alpine cryosphere. As a result of the changing climate over the past few decades, deglaciation has resulted in a surface decrease of IAs, which has not yet been documented out of a few specific examples. In this study, we quantify the effects of climate change on IAs since the mid-20th Cen...
This paper focuses on the monitoring of a small hanging glacier with Synthetic Aperture Radar (SAR) images using a combination of artificial Corner Reflectors (CRs) and dGNSS field measurements. First, to test the performance of the CRs in high-resolution X-band and medium-resolution C-band images acquired by PAZ and Sentinel-1 satellites respectiv...
Rockwall erosion due to rockfalls is one of the most efficient erosion processes in the highest parts of mountain ranges. It is therefore important to quantify this erosion to understand the long-term evolution of mountainous topography. In this study, we analyze how the 10 Be concentration of supraglacial debris can be used to quantify the rockwal...
Climate change is a global challenge that also for glacier tourism. In the European Alps, glacial volume has decreased to one half since the end of the Little Ice Age. To confront with this evolution, local stakeholders are slowing adapting diversification on their tourism products and services. One of these adaptations concerns highlighting the sc...
Climate change is a global challenge that also for glacier tourism. In the European Alps, glacial volume has decreased to one half since the end of the Little Ice Age. To confront with this evolution, local stakeholders are slowing adapting diversification on their tourism products and services. One of these adaptations concerns highlighting the sc...
Climate change leads to deep modifications of high Alpine environments. Those modifications have significant consequences on mountaineering itineraries and make them technically more difficult and more dangerous. Although a growing number of studies have recently documented this issue, they only list the processes affecting the itineraries and do n...
Appendix 1 for "Visitors’ motivations to engage in glacier tourism in the European Alps: comparison of six sites in France, Switzerland, and Austria"
-> https://doi.org/10.1080/09669582.2022.2044833
Glacier tourism is an important form of travel in the Alps that is currently threatened by climate change. Previous studies have shown that glaciers are retreating worldwide, and media coverage has led to the development of last-chance tourism. However, few studies have focused on the European Alps, and glacier site visitors have not been segmented...
Due To the effects of climate change, tourist locations such as glacial landscapes are increasingly becoming last-chance tourism (LCT) destinations. LCT is paradoxical: although visitors to such locations possess high environmental awareness, their travel generates greenhouse gas emissions that threaten these destinations. However, visiting LCT des...
There are on average 35 fatal mountaineering accidents per summer in France. On average, since 1990, 3.7 of them have occurred every summer in the Grand Couloir du Goûter, on the classic route up Mont Blanc (4809 m a.s.l.). Rockfall is one of the main factors that explain this high accident rate and contribute to making it one of the most accident-...
The warming and subsequent degradation of mountain permafrost within alpine
areas represent an important process influencing the stability of steep slopes and
rock faces. The unstable and monitored slopes of Mannen (Møre and Romsdal
county, southern Norway) and Gámanjunni-3 (Troms and Finnmark county,
northern Norway) were classified as high-risk s...
Climate change strongly affects mountain tourism activities. Glacier tourism is highly affected by the retreat of glaciers. However, research on the effects and adaptations of glacier tourism to climate change is scarce in Europe. By analysing the glacio-geomorphological literature, semi-structured interviews, and observations at six major Alpine g...
Human-induced climate change threatens societies and livelyhood (IPCC, 2021). Tourism is an industry that is highly impacted worldwide (Mora et al., 2018) and, at the same time, responsible for more than 8% of the global greenhouse gas emissions (Lenzen et al., 2018). However, despite the general awarness of the effects of climate change in the pop...
Climate change (CC) is a current and global phenomenon that clearly affects mountain areas, where almost all of the world’s glaciers are retreating synchronously, since the 1950s (IPCC, 2021). In this context, tourist activities related to glaciers are particularly impacted; this is the case, for example, of the Fox and Franz Josef glaciers in New...
Climate change strongly affects mountain tourism activities. Glacier tourism is highly affected by the retreat of glaciers. However, research on the effects and adaptations of glacier tourism to climate change is scarce in Europe. By analysing the glacio-geomorphological literature, semi-structured interviews, and observations at six major Alpine g...
Glacier landscapes attract millions of tourists every year; however, climate change induces alterations in these popular destinations. Although landscape changes can affect visitor behaviour, very few studies have investigated their impact on tourism. This study investigated how recent changes in the most-visited French glacier, the Mer de Glace (C...
Climate change induces profound changes in mountain territories that affect the activities pursued there. Tourism is one activity that is strongly impacted by these changes. Most research on tourism in mountain regions has focused on winter sports tourism, but glacier tourism, a summer activity, is also severely affected by climate change-induced p...
This paper focuses on the visibility of glacier surfaces in the Mont Blanc Massif (Western European Alps) on TerraSAR-X/PAZ images and the identification of geometric distortions (GDs) based on the SAR acquisition geometry. Small glaciers which exist in complex topographies like steep slopes are most prone to GDs. We built a visibility map for both...
This paper focuses on the visibility of glacier surfaces in the Mont Blanc Massif (Western European Alps) on TerraSAR-X/PAZ images and the identification of geometric distortions (GDs) based on the SAR acquisition geometry. Small glaciers which exist in complex topographies like steep slopes are most prone to GDs. We built a visibility map for both...
Periglacial rock walls are affected by an increase in rockfall activity attributed to permafrost degradation. While recent laboratory tests have asserted the role of permafrost in bedrock stability, linking experimental findings to field applications is hindered by the difficulty in assessing bedrock temperature at observed rockfall locations and t...
The current paper studies the dynamics and age of the Triangle du Tacul (TDT) ice apron, a massive ice volume lying on a steep high-mountain rock wall in the French side of the Mont-Blanc massif at an altitude close to 3640 m a.s.l. Three 60 cm long ice cores were drilled to bedrock (i.e. the rock wall) in 2018 and 2019 at the TDT ice apron. Textur...
The intensity of the current climate change has strong consequences on high mountain tourism activities. Winter activities are currently the most studied (ski industry). However, the consequences of environmental changes are also strong in summer, as geomorphological processes are enhanced at high elevation. The Mont Blanc Massif (Western Alps) is...
In high alpine environments, climate change leads to an increase in rockfall destabilizations. They represent a threat for sports and tourism activities in high mountain and especially for mountaineering. This danger of rockfall is particularly important on the classic route up Mont Blanc (4,809 m a.s.l., Mont Blanc massif, France), on the west fac...
Les glaciers sont, depuis près de deux siècles, des objets touristiques très visités. Cependant, le changement climatique actuel remet en question l’existence même des glaciers. Dans ce contexte, l’objectif de cet article est de questionner les formes touristiques qui sont aujourd’hui identifiables au sein de l’ensemble des sites touristiques glaci...
Gletscher sind seit fast zwei Jahrhunderten beliebte Touristenattraktionen. Doch der aktuelle Klimawandel stellt sogar die Existenz von Gletschern in Frage. In diesem Zusammenhang soll in diesem Artikel die Frage gestellt werden, welche Formen des Tourismus heute in allen alpinen Gletschertourismusorten zu erkennen sind. Eine Bestandsaufnahme im Ma...
Glaciers have been popular tourist attractions for almost two centuries. However, current climate change is now posing a new threat. In this context, this paper aims to question the tourism forms which are currently identifiable within Alpine glacier tourism sites. An inventory carried out on an Alpine scale shows that different tourist practices (...
Les glaciers sont, depuis près de deux siècles, des objets touristiques très visités. Cependant, le changement climatique actuel remet en question l'existence même des glaciers. Dans ce contexte, l'objectif de cet article est de questionner les formes touristiques qui sont aujourd'hui identifiables au sein de l'ensemble des sites touristiques glaci...
Environmental changes are currently leading to the emergence of new forms of tourism, in particular with regards to the development of Last Chance Tourism (LCT). LCT is a concept that appeared in the early 2010's; it is defined by Lemelin et al. (2010) as a form of tourism that aims to see natural features before they disappear. LCT involves a para...
Climate change is severely impacting glacier tourism destinations that lead to the emergence of Last-Chance Tourism in those places. This new tourism trend holds a paradox as last-chance tourist often travels long distance to see natural features threaten by climate change. However, is visitor’s relation with endangered places can impact their inte...
In the high mountain rock walls of the Mont Blanc massif, changes in the granite surface colour are related to its exposure age. The light grey colour of fresh rock surfaces turns orange when is long exposed to weathering. In order to study this colour/age relationship, reflectance spectroscopy was performed on 73 samples, and Terrestrial Cosmogeni...
Globally, tourism is being deeply impacted by glacial retreat caused by climate change. However, research on stakeholders' adaptation to climatic change and its threat to the industry on tourism niche is currently inadequate. Thus, through a literature review of 61 glacier peer-reviewed papers, this paper highlights the advancement in research on g...
The present time is a significant stage in the adjustment of mountain slopes to climate change and specifically atmospheric warming. This review examines the state of understanding of the responses of mid-latitude alpine landscapes to recent cryospheric change and summarizes the variety and complexity of documented landscape responses involving gla...
Knowledge of the thermal state of steep alpine rock faces is crucial to assess potential geohazards associated with the degradation of permafrost. Temperature measurements at the rock surface or in boreholes are however expensive, invasive, and provide spatially-limited information. Electrical conductivity and induced polarization tomography can de...
As part of an archaeological research project, we investigate the geomorphology of the cold and arid study area by combining field mapping with use of orthoimages and DEM. To the north of a broad trunk valley floor, gentle slopes continuously vegetated culminate around 3000 m, while to the south steep slopes reaching to 3500 m are deeply incised an...
Glaciers througouht the Alps are receding quickly because of climate change (Sommer et al., 2020). This generalized receding of glaciers has consequences for human societies, whether in terms of water resources, hydroelectricity or even for the tourism activities that have been developed around. Glaciers are a touristic object that are bringing mil...
Alpine cryosphere has intimately been linked to human societies since centuries (Cruikshank, 2005). During the Little Ice Age (LIA), glacier tongues were used as "ice quarry" and ice was exported to the cities around. During the Medieval Climate Optimum, glacier shrinkage allows commercial ways through ice-free passes. Since 1741 and the discovery...
Le changement climatique entraine une réduction forte des volumes de glace dans les Alpes. Ces évolutions ont un impact sur l’ensemble des activités qui y sont liées. Parmi elles, le tourisme glaciaire est une activité qui s’est fortement développé à travers le monde : en Chine, au Canada, en Islande ou encore en France, des milliers voire des mill...
Avec le réchauffement du climat, la dégradation du permafrost est à l'origine d'une intensification des processus géomorphologiques sur les versants de haute montagne. Dans les parois rocheuses, les écroulements se multiplient et leur volume augmente, posant des problèmes de sécurité non seulement à haute altitude (infrastructures, alpinistes), mai...
Anthropogenic climate change is causing significant changes to the cryosphere. Glaciers and glacier tourism are directly impacted, and glacier tourism operators must adapt to the disappearance of their main resource. Recent studies carried out in this context have demonstrated that Last Chance Tourism (LCT) has emerged as the motivation behind view...
Since the end of the Little Ice Age, the west face of the Drus (Mont Blanc massif, France) has been affected by a retrogressive erosion dynamic marked by large rockfall events. From the 1950s onwards, the rock failure frequency gradually increased until the large rockfall event (292,680 m3) of June 2005, which made the Bonatti Pillar disappear. Aim...
In the Mont Blanc massif (European Western Alps), rockfalls are one of the main natural hazards for alpinists and infrastructure. Rockfall activity after the Little Ice Age is well documented. An increase in frequency during the last three decades was related to permafrost degradation caused by rising air temperatures. In order to understand whethe...
Deglaciation of high mountain rockwalls alters slope stability as rockwalls become more sensitive to modifications in environmental factors (e.g. seasonal temperature variations). In the past decades, increasing efforts focused on studying deglaciated Alpine rockwalls. Yet, currently deglaciating rockfaces remain unstudied. Here, we quantify surfac...
Cette étude s’inscrit dans la continuité des travaux scientifiques menés par le laboratoire EDYTEM (Université Savoie Mont-Blanc/CNRS) sur les effets du changement climatique sur les conditions de pratique de l’alpinisme (Mourey et al., 2019). Son objectif est de mieux comprendre les caractéristiques des déstabilisations rocheuses qui se produisent...
The complete publication is available here : https://www.researchgate.net/publication/344688945_Last_chance_to_see_the_ice_visitor_motivation_at_Montenvers-Mer-de-Glace_French_Alps
Glaciers are an important resource for tourism but they are retreating quickly. This fact can be a threat for glacier touristic sites while it also stimulated a motivat...
The effects of climate change on high mountain environments are seriously affecting summer Alpine climbing. Summer mountaineering in the Alps has become progressively more dangerous and technically difficult in recent years and good periods for mountaineering tend to be unpredictable in summer and have shifted towards spring, autumn and even winter...
Large collections of images have become readily available through modern digital catalogs, from sources as diverse as historical photographs, aerial surveys, or user-contributed pictures. Exploiting the quantitative information present in such wide-ranging collections can greatly benefit studies that follow the evolution of landscape features over...
In the European Alps, high mountain environments are subject to major impacts resulting from climate change, which strongly affect human activities such as mountaineering. The purpose of the study was to examine changes in access routes to 30 high mountain huts in the Western Alps since the 1990s. Data were derived from the use of two different met...
