173 research outputs found
Spring-water temperature from rock glaciers in the Val di Sole catchment (Easter Italian Alps)
No full textSpring-water temperature was measured at 131 springs with elevation ranging between 1698 and 3039 m a.s.l. in the Val di Sole catchment (Eaastern Italian Alps). Measurements were taken from mid-August to mid-October, after the end of the snowmelt. Most springs have been measured once per year from 2018 to 2020, and a small group of them was also measured in 2021. Spring-water temperature was used to investigate the spatial distribution of mountain permafrost in the study area, and in particular its occurrence in rock glaciers classified as relict
Replacing monitored glaciers undergoing extinction: A new measurement series on la Mare Glacier (Ortles-Cevedale, Italy)
No full textMass balance, stable isotopes and pollen data from 1997 to 2014 on Mt. Ortles (Eastern European Alps)
No full textCampagna glaciologica annuale dei ghiacciai italiani (2022) Annual glaciological survey of Italian glaciers (2022)
No full textAbstract: Baroni C., Bondesan A., Carturan L., Chiarle M., Scotti R., Annual glaciological survey of Italian glaciers (2022). (IT ISSN 0391-9838, 2023). Results of the annual glaciological survey (2022) conducted on Italian glaciers are here presented. About 250 volunteers operated last year in the three Alpine sectors (Piemonte - Valle d’Aosta, Lombardy and Triveneto) and in the Apennines (Calderone Glacier, Gran Sasso Group) observing two hundred and two glaciers. One hundred and eighteen glaciers were observed in the Piemonte - Valle d’Aosta sector while frontal variation was mea-sured at the snout of sixty glaciers. Twenty-seven and fifty-seven glaciers were visited in the Lombardy Sector and in the Triveneto Sector, respectively (twenty-one and forty-three of which were measured, respectively). Mass balance measurements were conducted on nineteen Italian glaciers during the 2021-2022 hydrological year: four glaciers in the Western Alps (Piemonte - Valle d’Aosta sector), fourteen in the Eastern Alps (three in the Lombardy Sector, the other glaciers in the Triveneto Sector) and one in the Central Apennines
Effetto delle variazioni climatiche sulla criosfera e sull'idrologia dei bacini di alta quota
No full textThis work focuses on the cryosphere of the Ortles-Cevedale mountain group, which exhibit a high sensitivity to the ongoing climate change. The work is composed of four main parts: the first part introduces the research topic, the second part describes the study areas and field campaigns, the third part presents the results of field investigations and the final part describes the implementation and application of a model for the simulation of the mass balance on glaciers.Il lavoro di tesi è focalizzato sulla criosfera alpina del gruppo Ortles-Cevedale, che si dimostra molto sensibile alle variazioni climatiche globali in atto. La tesi consiste in quattro parti principali: una parte iniziale in cui si introduce la materia, una seconda parte in cui si descrive l'area di studio e le campagne di misura, una terza parte in cui si illustrano e commentano i risultati delle indagini di terreno e una parte finale in cui si propone l'implementazione di un modello per la simulazione del bilancio di massa glaciale
ANNUAL GLACIOLOGICAL SURVEY OF ITALIAN GLACIERS (2021) CAMPAGNA GLACIOLOGICA ANNUALE DEI GHIACCIAI ITALIANI (2021)
No full textBaRONI C., BONdESaN a., CaRTURaN L., CHIaRLE M. & SCOTTI R., Annual glaciological survey of Italian glaciers (2021). (IT ISSN 0391-9838, 2022). The annual glaciological survey (2021) conducted on Italian glaciers is here presented. About 200 volunteers operated last year in the three Alpine sectors (Piemonte - Valle d’Aosta, Lombardy and Triveneto) and in the Apennines (Calderone Glacier, Gran Sasso Group). One hundred and one glaciers were observed in the Piemonte - Valle d’Aosta sector while frontal variation was measured at the snout of fourty-nine glaciers. Twenty-seven and fifty-two glaciers were visited in the Lombardy Sector and in the Triveneto Sector, respectively (seventeen and fourty-four of which were measured, respectively). Data for seventeen Italian glaciers monitored during the 2020-2021 hydrological year are reported in the section on mass balance measurements: four glaciers in the Western Alps (Piemonte - Valle d’Aosta sector), twelve in the Eastern Alps (two in the Lombardy Sector, the other ten glaciers in the Triveneto Sector) and one in the Central Apennines)
Comparison of the current behaviour of three glaciers in western Trentino (Italian Alps)
No full textGeomorphic imprint of a small glacier and its rapid vanishing during 20th century: the Marmotte glacier (Ortles-Cevedale, Italy).
No full textThis work presents a glaciological and geomorphological study carried
out on an area of three square kilometers in the southern part of
the Ortles-Cevedale Group. In this area, at the head of the Val di Peio
(Province of Trento), a small glacier existed until the first half of the 20th
century, named Marmotte Glacier. This study was aimed at defining the
maximum extent of the glacier during the Little Ice Age (LIA), reconstructing
its fluctuations in the last century, and providing a geomorphological
context through the compilation of a detailed geomorphological
map, at the scale of 1:2500.
A geomorphological survey was performed in the field, combining
different survey techniques for establishing the transport history of glacigenic
sediments and the relative age since deglaciation of rock surfaces.
Historical glacier fluctuations have been reconstructed analysing historical
sources, in particular old photos (aerial and oblique terrestrial photos)
and glaciological observations started in the 1920s.
During the LIA, the glacier extent was 0.33 km2, but already in the
1940s it was 40% smaller, and quickly become a glacieret by the end of
the 1950s. In the following decades, the ice body went through a rapid
fragmentation and completely vanished in the early 2000s. These results
point to a high climatic sensitivity and high vulnerability for this small
glacier, whose reconstructed equilibrium line altitude (ELA) matches
very well with ELAs reconstructed for neighbouring glaciers in the LIA.
This study provides evidence for significant marginal glaciation (i.e. the
existence of very small glaciers and glacierets) during the LIA, in areas
where geomorphological evidence is poorly expressed or even absent
Recent mass balance results and morphological evolution of Careser glacier (Central Alps)
No full textThis paper presents the 2002 to 2005 and historical mass balance series for Careser glacier. The mass balance evolution since 1967 has been compared with the meteorological data from the local weather stations. The most recent morphological changes of the ice body are also described. In the last four years the mass balance was extremely negative, with an average value of -2008 mm we and a minimum value of –3317 mm we. The current mass loss rate is nearly twice the average of the 1981 to 2001 (–1195 mm we), whereas between 1967 and 1980 the glacier was near equilibrium conditions. This behaviour seems to be strictly connected with the ablation season temperatures. By contrast, the relationship with the accumulation season precipitation amounts is less clear. The strongly negative mass balances result in huge morphological changes (surface lowering, bedrock emersion, rapid fragmentation) and positive feedbacks contribute to accelerate the deglaciation process. At the present- day climatic conditions, the complete extinction of the glacier has to be expected within few decades
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