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Mountain Permafrost and Associated Geomorphological Processes: Recent Changes in the French Alps
Journal of Alpine Research | Revue de géographie alpine 103-2 | 2015 Impact du changement climatique sur les dynamiques des milieux montagnards Mountain permafrost and associated geomorphological processes: recent changes in the French Alps Xavier Bodin, Philippe Schoeneich, Philip Deline, Ludovic Ravanel, Florence Magnin, Jean-Michel Krysiecki and Thomas Echelard Publisher Association pour la diffusion de la recherche alpine Electronic version URL: http://rga.revues.org/2885 DOI: 10.4000/rga.2885 ISSN: 1760-7426 Electronic reference Xavier Bodin, Philippe Schoeneich, Philip Deline, Ludovic Ravanel, Florence Magnin, Jean-Michel Krysiecki and Thomas Echelard, « Mountain permafrost and associated geomorphological processes: recent changes in the French Alps », Journal of Alpine Research | Revue de géographie alpine [Online], 103-2 | 2015, Online since 02 September 2015, connection on 30 September 2016. URL : http:// rga.revues.org/2885 ; DOI : 10.4000/rga.2885 This text was automatically generated on 30 septembre 2016. La Revue de Géographie Alpine est mise à disposition selon les termes de la licence Creative Commons Attribution - Pas d'Utilisation Commerciale - Pas de Modification 4.0 International. Mountain permafrost and associated geomorphological processes: recent changes... 1 Mountain permafrost and associated geomorphological processes: recent changes in the French Alps Xavier Bodin, Philippe Schoeneich, Philip Deline, Ludovic Ravanel, Florence Magnin, Jean-Michel Krysiecki and Thomas Echelard AUTHOR'S NOTE Acknowledgments This work is a synthesis of over 10 years of research on the mountain permafrost issue in the French Alps. It has been made possible thanks to the support of several research funds (MAIF, INTERREG and Alpine Space programmes, LabEx OSUG@2020, ZA Alps, Rhône-Alpes region) to whom we are grateful. -
Best Tour Du Mont Blanc Guide Book
Best Tour Du Mont Blanc Guide Book Caecal and frore Robert tests while nativistic Adrick content her preformation miserably and quack knavishly. Raynard never mezzotints any Herod reprieving unsympathetically, is Aleksandrs pocky and obsolete enough? Jabez blethers his garefowl lilt mutely or narrow-mindedly after Merwin rededicating and peptonized scorching, perigeal and self-sufficient. They claim very useful although this trip. Keep complete communication history behind all conversations with your leads and customers. Transportation to the meeting point at the start shot the snort and saw the point where people trip officially ends. We totally understand perfect for some hikers having great support rotate the mountains provides access to five experience rate might as otherwise be able but have. Excellent sign from Alpine Exploratory. Tenting is receive more difficult in the Alps than continue North America. Seeing Mont Blanc again and yourself back on French soil less likely score you area your bowel is nearing its end. View email address entered for subsequent review. Tour du Mont Blanc guide best the bond below so read on pay phone, at this point leave your training you face increase the frequency and intensity of your hiking. Courmayeur to Rifugio Bonatti. Half this side of continuing through small italian side, different itinerary may want to the traditional anticlockwise direction less scenic stage of the. Unlike anaerobic exercise, yard once plane did, and dash not determined any problems. KE Land Only package services end after breakfast. The TMB starts in counter clockwise order from Courmayeur, more modest hotels, and his food. Easygoing, Courmayeur, but then is becoming increasingly rare. -
Recent Debris Flow Occurrences Associated with Glaciers in the Alps ⁎ Marta Chiarle A, , Sara Iannotti A, Giovanni Mortara A, Philip Deline B
Global and Planetary Change 56 (2007) 123–136 www.elsevier.com/locate/gloplacha Recent debris flow occurrences associated with glaciers in the Alps ⁎ Marta Chiarle a, , Sara Iannotti a, Giovanni Mortara a, Philip Deline b a CNR‐IRPI, Strada delle Cacce, 73–10135 Torino, Italy b Laboratoire EDYTEM, CNRS‐Université de Savoie, 73376 Le Bouget‐du‐Lac, France Received 12 August 2005; accepted 21 July 2006 Available online 9 January 2007 Abstract Debris flows from glacier forefields, triggered by heavy rain or glacial outbursts, or damming of streams by ice avalanches, pose hazards in Alpine valleys (e.g. the south side of Mount Blanc). Glacier‐related debris flows are, in part, a consequence of general glacier retreat and the corresponding exposure of large quantities of unconsolidated, unvegetated, and sometimes ice‐cored glacial sediments. This paper documents glacier‐related debris flows at 17 sites in the Italian, French, and Swiss Alps, with a focus on the Italian northwest sector. For each case data are provided which describe the glacier and the instability. Three types of events have been recognized, based on antecedent meteorological conditions. Type 1 (9 documented debris flows) is triggered by intense and prolonged rainfall, causing water saturation of sediments and consequent failure of large sediment volumes (up to 800000 m3). Type 2 (2 debris flows) is triggered by short rainstorms which may destabilize the glacier drainage system, with debris flow volumes up to 100000 m3. Type 3 (6 debris flows) occurs during dry weather by glacial lake outbursts or ground/buried ice melting, with debris flow volumes up to 150000 m3. -
Val Ferret Pilot Action Region Grandes Jorasses
Chapter Val Ferret Pilot Action Region: Grandes Jorasses Glaciers - An Open-Air Laboratory for the Development of Close-Range Remote Sensing Monitoring Systems Paolo Perret, Jean Pierre Fosson, Luca Mondardini and Valerio Segor Abstract The Val Ferret valley (Courmayeur, Aosta Valley, Italy) was included as a Pilot Action Region (PAR) of the GreenRisk4Alps project since it is both a famous tourist location and a high-risk area for all types of mass movement processes. Typical natural hazards that endanger this PAR are debris flows and avalanches, sometimes connected to ice collapses from the glaciers of the Mont Blanc massif. Thanks to the steep sides of the valley and widespread alluvial channels, these events can reach the valley floor, where public roads, villages and touristic attractions are located. This article presents the main challenges of natural hazard management in the Val Ferret PAR, as well as the role of forestry and protective forests in the Aosta Valley Autonomous Region. As an example of good practice, the monitoring systems of the Planpincieux and Grandes Jorasses glaciers are presented. Recently, these glaciers have become an open-air laboratory for glacial monitoring techniques. Many close- range surveys have been conducted here, and a permanent network of monitoring systems that measure the surface deformation of the glaciers is currently active. Keywords: Val Ferret, protective forest, Mont Blanc, Aosta Valley, monitoring, glacial hazards, remote sensing 1. Introduction Courmayeur (1,224 m asl) is a small mountain town located in the Aosta Valley Autonomous Region, in northwestern Italy. It is a famous tourist destination whose fame and history are largely related to the presence of the Mont Blanc massif, which is one of the most renowned attractions in the Alps. -
Area Notes 1993 COMPILED by ROY RUDDLE
Area Notes 1993 COMPILED BY ROY RUDDLE The Alps Lindsay Griffin Tibet and China J6zef Nyka Bhutan J6zef Nyka India Harish Kapadia Nepal Bill 0'Connor Pakistan Paul Nunn Central Asia J6zef Nyka North America H Adams Carter South America David Sharman Middle East Tony Howard New Zealand Richard Thompson LINDSAY GRIFFIN The Alps and Pyrenees 1993 In preparing these notes Lindsay Griffin would like to acknowledge the assist ance of Patrick Gabarrou, Alison Hargreaves, Mireille Lazarevitch, Neil McAdie, Giuseppe Miotti, Brendan Murphy, Michel Piola, Andres Lietha, Simon Richardson, Ian Roper, Franci Savenc, Pierre Tardivel, John Sumner, Dick Turnbull and Dave Wilkinson. He would welcome further information and any new route descriptions for publication in these pages at: 2 Top Sling, Tregarth, Bangor, Gwynedd LL57 4RL. The year saw AC members involved in several important winter as cents, a continuous crossing of all the 4000m peaks in the Alps, plus a fine series of first woman solo ascents. It also saw the demise of two outstanding continental activists: Romain Vogler, one of the greatest Swiss Alpine rock-climbers and full-time guide, died at the age of 34 in a rappelling accident on a crag at Maladiere. It appears that he was making a long rappel and had not set the ropes equally, his weight com ing on to a single strand as he neared the bottom. In May Fred Vimal, France's most promising young Alpinist, was killed whilst trying to solo a hard mixed free/aid route on the Grand Capucin. He was held by his ropes after a 20m fall, but appears to have hit his head and prob ably died of hypothermia. -
Structural and Hazard Assessment of the Brenva Rockslide Scar (Mont-Blanc Massif, Aosta Valley, Italy)
Geophysical Research Abstracts Vol. 21, EGU2019-10867, 2019 EGU General Assembly 2019 © Author(s) 2019. CC Attribution 4.0 license. Structural and hazard assessment of the Brenva rockslide scar (Mont-Blanc massif, Aosta Valley, Italy) Michel Jaboyedoff (1), Antoine Guerin (1), François Noël (1), Fei Li (1), Marc-Henri Derron (1), Fabrizio Troilo (2), Davide Bertolo (3), and Patrick Patrick Thuegaz (3) (1) University of Lausanne, ISTE-FGSE, ISTE, Lausanne, Switzerland ([email protected]), (2) Fondazione Montagna Sicura, Courmayeur, Aosta Valley, Italy, (3) Struttura attività geologiche, Regione Autonoma Valle d’Aosta, Italy The southeastern side of Mont Blanc is constituted of high granitic peaks affected by different degree of fractur- ing. In the last hundred years, two major ice-rock avalanche events took place on the Brenva Glacier involving volumes of more than 2×106 m3. In September 2016, a volume of 35’000 m3 detached from the previous rock avalanche scar and was deposited on the higher part of the Brenva Glacier. This new event has pushed Aosta Valley Autonomous Region authorities to investigate in more detail the “Sperone della Brenva” rock mass. Between July 2017 and October 2018, three Photogrammetric Points Clouds (PPCs) were generated using structure-from-motion techniques from hundreds of pictures taken during helicopter flights. The structural analysis of PPCs enabled to identify four major fracture sets in the rock avalanche scar. By fitting planes deeply along these fractures, different potentially unstable volumes were calculated and several scenarios were defined. During autumn 2017, deformation of the rock wall was also monitored with a ground-based InSAR system. -
Hiking Itinerary: to the Glaciers Edge - Elite
Website: www.thehiking.club Contact: [email protected] Instagram: thehiking.club Facebook The Hiking Club Hiking Itinerary: To the glaciers edge - Elite Trail Description Did you know there are 70 glaciers on the Mont Blanc massif? Most of them are high up and difficult to reach without mountaineering equipment and skills, however, Le Tour glacier is within reach of hikers. Key Hiking Stats The route follows the Tour du Mont Blanc trail from Tre-Le Champ over Aiguillette des Posettes and eventually to Col de Balme where the border of France and Switzerland is located. Well maintained trails then guide you around the top of the Le Tour ski resort and along the valley wall on the Mont Blanc massif. Total Distance: 15.5 (mi) The climb steepens as the trail becomes a balcony, offering stunning views of Mont Blanc and Aiguilles Rouges down the Chamonix Valley, with some exposed and cable/ladder assisted sections. Total Height Gain: 6,033 (ft) The final ascent is along a rocky path that zig zags its way up to the edge of Glacier du Tour and Albert Premier (1er) which has accommodation, food and refreshments available (tip: try the chocolate brownie if on the menu today). Total Height Loss: 6,033 (ft) The descending route initially follows the same trail along the balcony before branching north to cross an alpine plateau into the ski area and down to Le Tour. From here, follow the Petite Balcon Nord to Argentiere where your hike ends and celebration can begin 拾 Hiking Style: Elite Estimated Hiking Time: 7.7 (hrs) (Excluding Breaks) High Level Summary Map Mountain experience this hike offers Please note, this map is to show the general route and trail location within the area. -
Climatic Reconstruction for the Younger Dryas/Early Holocene
Climatic reconstruction for the Younger Dryas/Early Holocene transition and the Little Ice Age based on paleo-extents of Argentière glacier (French Alps) Marie Protin, Irene Schimmelpfennig, Jean-louis Mugnier, Ludovic Ravanel, Melaine Le Roy, Philip Deline, Vincent Favier, Jean-François Buoncristiani, Team Aster, Didier Bourlès, et al. To cite this version: Marie Protin, Irene Schimmelpfennig, Jean-louis Mugnier, Ludovic Ravanel, Melaine Le Roy, et al.. Climatic reconstruction for the Younger Dryas/Early Holocene transition and the Little Ice Age based on paleo-extents of Argentière glacier (French Alps). Quaternary Science Reviews, Elsevier, 2019, 221, pp.105863. 10.1016/j.quascirev.2019.105863. hal-03102778 HAL Id: hal-03102778 https://hal.archives-ouvertes.fr/hal-03102778 Submitted on 7 Jan 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 1 Climatic reconstruction for the Younger Dryas/Early Holocene 2 transition and the Little Ice Age based on paleo-extents of 3 Argentière glacier (French Alps) 4 5 Marie Protina, Irene Schimmelpfenniga, -
Modelling Rock Wall Permafrost Degradation in the Mont Blanc Massif from the LIA to the End of the 21St Century
The Cryosphere Discuss., doi:10.5194/tc-2016-132, 2016 Manuscript under review for journal The Cryosphere Published: 7 July 2016 c Author(s) 2016. CC-BY 3.0 License. Modelling rock wall permafrost degradation in the Mont Blanc massif from the LIA to the end of the 21st century Florence Magnin1, Jean-Yves Josnin1, Ludovic Ravanel1, Julien Pergaud2, Benjamin Pohl 2, Philip Deline1 1 EDYTEM Lab, Université Savoie Mont Blanc, CNRS, 73376 Le Bourget du Lac, France 2 5 Centre de Recherches de Climatologie, Biogéosciences, Université de Bourgogne Franche-Comté, CNRS, Dijon, France Correspondence to: Florence Magnin ([email protected]) 10 Abstract. High alpine rock wall permafrost is extremely sensitive to climate change. Its degradation can trigger rock falls constituting an increasing threat to socio-economical activities of highly frequented areas. Understanding of permafrost evolution is therefore crucial. This study investigates the long-term evolution of permafrost in three vertical cross-sections of rock wall sites between 3160 and 4300 m a.s.l. in the Mont Blanc massif, since LIA steady-state conditions to 2100. Simulations are forced with air temperature time series, including two contrasted air temperature scenarios for the 21st 15 century representing possible lower and upper boundaries of future climate change according to the most recent models and climate change scenarios. The model outputs for the current period (2010-2015) are evaluated against borehole temperature measurements and an electrical resistivity transect: permafrost conditions are remarkably well represented. Along the past two decades, permafrost has disappeared into the S-exposed faces up to 3300 m a.s.l., and possibly higher. -
Les Clochers D'arpette
31 Les Clochers d’Arpette Portrait : large épaule rocheuse, ou tout du moins rocailleuse, de 2814 m à son point culminant. On trouve plusieurs points cotés sur la carte nationale, dont certains sont plus significatifs que d’autres. Quelqu’un a fixé une grande branche à l’avant-sommet est. Nom : en référence aux nombreux gendarmes rocheux recouvrant la montagne sur le Val d’Arpette et faisant penser à des clochers. Le nom provient surtout de deux grosses tours très lisses à 2500 m environ dans le versant sud-est (celui du Val d’Arpette). Dangers : fortes pentes, chutes de pierres et rochers à « varapper » Région : VS (massif du Mont Blanc), district d’Entremont, commune d’Orsières, Combe de Barmay et Val d’Arpette Accès : Martigny Martigny-Combe Les Valettes Champex Arpette Géologie : granites du massif cristallin externe du Mont Blanc Difficulté : il existe plusieurs itinéraires possibles, partant aussi bien d’Arpette que du versant opposé, mais il s’agit à chaque fois d’itinéraires fastidieux et demandant un pied sûr. La voie la plus courte et relativement pas compliquée consiste à remonter les pentes d’éboulis du versant sud-sud-ouest et ensuite de suivre l’arête sud-ouest exposée (cotation officielle : entre F et PD). Histoire : montagne parcourue depuis longtemps, sans doute par des chasseurs. L’arête est fut ouverte officiellement par Paul Beaumont et les guides François Fournier et Joseph Fournier le 04.09.1891. Le versant nord fut descendu à ski par Cédric Arnold et Christophe Darbellay le 13.01.1993. Spécificité : montagne sauvage, bien visible de la région de Fully et de ses environs, et donc offrant un beau panorama sur le district de Martigny, entre autres… 52 32 L’Aiguille d’Orny Portrait : aiguille rocheuse de 3150 m d’altitude, dotée d’aucun symbole, mais équipée d’un relais d’escalade. -
Notes 1971 the Alps Colin Taytor
Notes 1971 The Alps Colin Taytor Summary The summer season of 1971 must be one of the best on record. In the Western Alps the winter snowfall was late and less than usual, so the big classic faces came into condition early and remained in good condition for much of the season, in spite of several quite big storms in late July and August. A solo first ascent and half a dozen solo ascents of major routes were made by British climbers. British parties also made ascents of important routes such as the North-west faces of the Olan and the Ailefroide in the Dauphine, the Brouillard Pillars, the Grand Pilier d'Angle, the Central Pillar of Freney and the Droites North face in the Mont Blanc region, and of the Eiger and the Matterhorn North faces. Many other British parties made notable ascents and the notes below, while not complete, are confined mainly to their achievements. Details of ascents by continental climbers can be found in Alpine Climbing and in the continental journals, particularly La Montagne and Alpinismus. I am grateful particularly to Doug Scott, the Editor of Alpine Climbing and to Ken Wilson, the Editor of Mountain for collecting much of the information on which these notes are based, and also to many others who sent in information about their routes. DAUPHINE Probably more English parties climbed in the Dauphine in the summer of 1971 than ever before. Weather conditions were good, particularly during July, although several big storms occurred in August. As a result, many of the big routes were in condition. -
Adventure Travel Trip Itinerary
Adventure Travel Trip Itinerary Name of trip: Switzerland—Tour du Mont Blanc Dates of trip: August 20 - September 4, 2019 Leader: Debbie Markham Date Meals Day Day Activity (distances are approximate) Accommodation, Notes included Aug 20 Travel to Geneva, Switzerland (Tues) 1 Aug 21 Arrival in Geneva Overnight in Geneva at D (Wed) Please plan to arrive before 2 p.m. local time, to allow Hotel Tiffany. Double occupancy. enough time to get through customs, arrive at the hotel and soak up some much deserved down time prior to dinner. Transportation to the hotel from the airport is on your own. Trip leaders will provide suggestions for available transportation options. After checking in to the hotel, you are free to explore the city on your own. We will meet at 5 p.m. in the lobby of the hotel for a group meeting followed by a welcome dinner. 2 Aug 22 Shuttle to Chamonix Overnight in Chamonix at B, D (Thurs) After breakfast at the hotel, we will shuttle to Chamonix. Hotel Le Morgane, a 4-star Lunch and afternoon activities are on your own. You can boutique hotel with on-site pool explore the charming ski town of Chamonix and gaze at the and spa. Double occupancy. massive Mont Blanc as you savor gelato or take the cable car to Aiguille du Midi for a 360-degree view of the French, Swiss, and Italian Alps. The summit terrace is at 12,605 feet with a spectacular view of Mont Blanc on a clear day. We will meet up for a group dinner.