Integrated Geomatic Techniques for Assessing Morphodynamic Processes and Related Hazards in Glacial and Periglacial Areas (Western Italian Alps) in a Context of Climate Change

Bertotto, Stefania; Perotti, Luigi; Bacenetti, Marco; Damiano, Elisa; Chiarle, Marta; Giardino, Marco

doi:10.1007/978-3-319-09300-0_33

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…In a warming climate, thawing of formerly frozen rock walls above glacier surfaces may increase the incidence of rockfalls Haeberli 2007, Pogliotti et al 2008), leading to a thickening of debris on glaciers, especially if the rock walls comprise highly fractured and altered volcanic material, such is the case at Plinth Glacier. Terrestrial laser scanner and photogrammetry surveys could determine rockfall magnitude and frequency from the headwalls of Plinth Glacier, as has been done locally in the European Alps (Fischer et al, 2006;Bertotto et al, 2015).…”

Section: Plinth Galciermentioning

confidence: 99%

Structure from motion used to revive archived aerial photographs for geomorphological analysis: an example from Mount Meager volcano, British Columbia, Canada

et al. 2021

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High resolution topographic modeling has become more accessible due to the development of Structure from Motion (SfM) image matching algorithms in digital photogrammetry. Large archival databases of historical aerial photographs are available in university, public, and government libraries, commonly as paper copies. The photos can be in poor condition (i.e. deformed by humidity, scratched, or annotated). In addition, the negatives, as well as metadata, may be missing. Processing such photos using classic stereo-photogrammetry is difficult and, in many instances, impossible. SfM can be applied to these photosets to access the valuable archive of geomorphic changes over the past century. In this paper, we illustrate the utility of the SfM technique using 568 digitized vertical aerial photographs of Mount Meager volcano, located in southwest British Columbia, Canada. We use the aerial photographs, which span the period from 1947 to 2006, to track glacier and glacier-landslide interactions on the volcano. Over this period, glaciers have thinned and retreated, interrupted by minor advances in the 1960s and 1970s. Landslides are frequent on the volcano and contribute to debris cover on the glaciers affecting the ablation process. SfM processing of the aerial photographs allowed us to unlock geomorphic information and reconstruct landscape change that would otherwise have been impossible. The results from SfM provide a visually effective way of presenting landscape change to a broad public audience, as a form of virtual geoheritage. The approach can thus be broadly applied in scientific and professional practices for improving land planning and hazard management.

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Section: Plinth Galciermentioning

confidence: 99%

Structure from motion used to revive archived aerial photographs for geomorphological analysis: an example from Mount Meager volcano, British Columbia, Canada

et al. 2021

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The Glaciers of the Valle d’Aosta and Piemonte Regions: Records of Present and Past Environmental and Climate Changes

Giardino

Mortara²,

Chiarle

2017

World Geomorphological Landscapes

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Socio-environmental value of glacier lakes: assessment in the Aosta Valley (Western Italian Alps)

et al. 2022

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Progressive glacier retreat can deeply impact high-mountain areas. New glacier lakes are forming and potential connected opportunities (e.g. geosystem services) and risks (e.g. floods) are emerging. In the last decades, glacier lakes in the European Alps have increased in number and size, including in the study area (Aosta Valley Region, NW Alps, Italy). This work presents a methodology for a regional scale assessment of the potential of glacier lakes for socio-environmental development of mountain territories. Within the Aosta Valley, 337 glacier lakes were identified covering a total area of about 1.55 km 2 . These lakes were numerically evaluated and ranked through a semiautomatic analysis in a GIS environment that was based on a set of parameters related to: 1) the geo-environmental value; 2) the existence of human infrastructures and/or activities close to the lakes; 3) the potential interaction of natural instabilities within the areas surrounding the lakes. Results showed the robustness of the assessment considering some of the highest scored lakes (e.g. Lago del Miage, lakes at the Rutor Glacier, etc.) and mountain sectors (Mont Blanc and Matterhorn areas). The application of the proposed methodology represents an initial step towards the identification of hot-spot lakes for a sustainable and integrated management, that also takes into account potential risk conditions connected to natural instabilities.

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Integrated Geomatic Techniques for Assessing Morphodynamic Processes and Related Hazards in Glacial and Periglacial Areas (Western Italian Alps) in a Context of Climate Change

Cited by 4 publications

References 3 publications

Structure from motion used to revive archived aerial photographs for geomorphological analysis: an example from Mount Meager volcano, British Columbia, Canada

Structure from motion used to revive archived aerial photographs for geomorphological analysis: an example from Mount Meager volcano, British Columbia, Canada

The Glaciers of the Valle d’Aosta and Piemonte Regions: Records of Present and Past Environmental and Climate Changes

Socio-environmental value of glacier lakes: assessment in the Aosta Valley (Western Italian Alps)

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