Land subsidence and Late Glacial environmental evolution of the Como urban area (Northern Italy)

Comerci, Valerio; Capelletti, Sabrina; Michetti, Alessandro Maria; Rossi, Sabina; Serva, Leonello; Vittori, E.

doi:10.1016/j.quaint.2007.06.014

Cited by 17 publications

(37 citation statements)

References 15 publications

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“…2. Maximum (red dots), mean (black dots), and minimum (blue dots) annual lake levels since 1845 (original data: Consorzio dell'Adda); and elevation of Piazza Cavour (gray dots, Comerci et al 2007). Vertical red lines indicate the positive difference between maximum lake level and elevation of Piazza Cavour (e.g., flooding).…”

Section: Methodsmentioning

confidence: 99%

“…The outflow from Lake Como, and hence the lake levels, has been managed since the construction of a dam near Lecco in 1946 for a consortium of downstream water users (Consorzio dell'Adda 2010) with the aim of providing hydropower in winter and irrigation water in summer while moderating lake levels to prevent flooding in Como at one extreme and very low lake levels at the other. Every year since 1975, water levels in the lake have almost reached the city's lowest point of elevation (198.51 m ASLmeasured on the lakeshore by Piazza Cavour in 1997; Comerci et al 2007), although peak levels have been constrained to that limit in most years. However, on 10 occasions the lake caused significant flooding in the city despite regulating activities, flooding an area of more than 1.5 ha.…”

Section: Floods In Como: Hydrological Considerationsmentioning

confidence: 99%

“…2). The elevation of the city, and particularly that of Piazza Cavour, has been decreasing through time due to geological subsidence resulting from a combination of natural compaction of the unconsolidated glacial sediments on which the town was built (sinking velocities of 1-2.5 mm y -1 (Comerci et al 2007)) and human-induced subsidence (sinking velocities up to >20 mm y -1 (Comerci et al 2007)) following exploitation of the deep aquifer between 1950 and 1975. The current sinking rate, which is expected to continue in the near future, is approximately 2.5 mm y -1 (Comerci et al 2007).…”

Section: Long-term Trendsmentioning

confidence: 99%

“…Number of days per month of the year when lake levels were higher than 198.51 m ASL (corresponding to the lowest point of Piazza Cavour; Comerci et al 2007) and 199.22 m ASL (corresponding to significant floods with more than 1.5 ha of the city flooded; Gastine 2006, unpublished thesis), averaged over the period .…”

Section: Figmentioning

confidence: 99%

“…Nor did they take into account the possibility of integrating upstream and downstream catchment management, possibly because of the costs and difficulties of negotiating priorities between public and private institutions at different scales (including transboundary, as two of the upstream hydropower reservoirs are located in Switzerland). (Comerci et al 2007). Rating curves were elaborated by the Hydrographic Office of the Po River and reported by Moisello and Vullo (2011).…”

Section: The Flood Defense Projectmentioning

confidence: 99%

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A Wall out of Place: a Hydrological and Sociocultural Analysis of Physical Changes to the Lakeshore of Como, Italy

Laborde¹,

Imberger²,

Toussaint³

2012

E&S

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A wall out of place: a hydrological and sociocultural analysis of physical changes to the lakeshore of Como, Italy. ABSTRACT. The construction of a flood protection structure that obscured views of the lake in Como, northern Italy, led to unprecedented public protest in 2009-2010 and to the eventual dismantlement of the structure. This provided a focus to investigate the delicate interplay of technical and cultural matters in environmental policy-in this case, catchment management and flood prevention. This article shows how a focus on hydrological control in isolation from the rest of the catchment and from the sociocultural context contributed to the project's failure. A key message of the article is that data and analyses from the environmental and social sciences are both pivotal to environmental planning, as they inform different yet interdependent components of a single project. There is value in integrating technical and sociocultural knowledge, both at the academic level, as illustrated by the mixed methods used in this article, and at the policy level, through management frameworks that emphasize cross-sectoral learning and public participation. The analysis also reveals that the notion of "place" has a central role to play in this process of integration, both as a conceptual bridge between technical and sociocultural components of environmental studies and as an emphasis in environmental planning activities to foster the interest and engagement of communities.

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Section: Methodsmentioning

confidence: 99%

Section: Floods In Como: Hydrological Considerationsmentioning

confidence: 99%

Section: Long-term Trendsmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

Section: The Flood Defense Projectmentioning

confidence: 99%

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A Wall out of Place: a Hydrological and Sociocultural Analysis of Physical Changes to the Lakeshore of Como, Italy

Laborde¹,

Imberger²,

Toussaint³

2012

E&S

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The use of iron chemical analysis of podzols to date the Late Pleistocene–Holocene deglaciation history of the Central Italian Alps

Longhi

Monticelli

Guglielmin

2020

J Quaternary Science

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Podzols that have developed on glacial and periglacial features provide the opportunity to reconstruct glacial evolution after the Last Glacial Maximum (LGM) using different soil indices. Analysing 17 soils classified as podzol, we used the crystallinity ratio of free iron oxides (CRF) on both the A and Bs horizons, and absolute ages for the same landforms containing the soil profile, to create dating curves. Two equations were generated: age = 4566.9 × ln (CRF) + 1760 (1), and age = 3907 × ln (CRF) + 3508.2 (2). The reliability of the curves was evaluated with the Fe o /Fe d ratio, and with the difference of ages calculated using both equations. Equation (2) is considered more reliable because the A horizon may be influenced by new pedogenesis on the pre-existing podzol, leading to the development of a new type of soil. By dating the soils, we reconstructed the glacial history of the three main upper branches of the LGM Adda Glacier in the Central Italian Alps, specifically the Stelvio Pass area (ST), Gavia Pass area (GV), and the Val Viola valley (VV). Seven glacial advances were identified at 16.7-14.7 ka (phase I), 12.3 ka (phase II), 11 ka (phase III), 10-9.7 ka (phase IV), 9 ka (phase V), 7.5 ka (phase VI) and 5.3 ka (phase VII). The first five phases are chronologically similar to the main Late Pleistocene-Early Holocene phases recorded in the Central European Alps. The last two Holocene phases, which are both longer in duration than the Little Ice Age, are recorded in ST and GV. Interestingly, these phases generally are not recorded in the rest of the Central European Alps, where the late Holocene glaciers were smaller than their present size.

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The Role of Geosciences in the Mitigation of Natural Disasters: Five Case Studies

Leroy

Warny

Lahijani

et al. 2009

Geophysical Hazards

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Land subsidence and Late Glacial environmental evolution of the Como urban area (Northern Italy)

Cited by 17 publications

References 15 publications

A Wall out of Place: a Hydrological and Sociocultural Analysis of Physical Changes to the Lakeshore of Como, Italy

A Wall out of Place: a Hydrological and Sociocultural Analysis of Physical Changes to the Lakeshore of Como, Italy

The use of iron chemical analysis of podzols to date the Late Pleistocene–Holocene deglaciation history of the Central Italian Alps

The Role of Geosciences in the Mitigation of Natural Disasters: Five Case Studies

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