Mauro Rosi - Academia.edu (original) (raw)

Papers by Mauro Rosi

Research paper thumbnail of Chrono-stratigraphy of the youngest (last 1500 years) rhyolitic eruptions of Lipari (Aeolian Islands, Southern Italy) and implications for distal tephra correlations

Journal of Volcanology and Geothermal Research, 2021

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Research paper thumbnail of Quantifying volcanic hazard at Campi Flegrei caldera (Italy) with uncertainty assessment: 2. Pyroclastic density current invasion maps

Journal Of Geophysical Research: Solid Earth, Apr 1, 2015

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Research paper thumbnail of Hydrochemistry and stable isotope for groundwater hydrodynamics analysis in a karst aquifer (Alpi Apuane, Italy)

RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA, Sep 1, 2010

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Research paper thumbnail of Plinian pumice fall deposit of the Campanian Ignimbrite eruption (Phlegraean Fields, Italy)

Journal of Volcanology and Geothermal Research, Aug 1, 1999

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Research paper thumbnail of Interaction between caldera collapse and eruptive dynamics during the Campanian Ignimbrite eruption, Phlegraean Fields, Italy

Bulletin of Volcanology, Apr 1, 1996

... Page 5. Fig, 4 a Proximal deposits of the Campanian Ignimbrite eruption in the sea cliff of P... more ... Page 5. Fig, 4 a Proximal deposits of the Campanian Ignimbrite eruption in the sea cliff of Pozzo Vecchio, Procida island. The outcrop is approximately 15 m high. b Detail of the base of the sintered ig-nimbrite of unit B in the same section. ...

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Research paper thumbnail of A multidisciplinary approach in defining the hydrogeological model of the carbonate aquifer system in the Versilia River basin (Tuscany, Italy)

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Research paper thumbnail of Guidebook of the field excursion to Phlegrean Fields and Vesuvius. Workshop on explosive volcanism

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Research paper thumbnail of Explanatory notes to the geological map

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Research paper thumbnail of Time correlation by palaeomagnetism of the 1631 eruption of Mount Vesuvius. Volcanological and volcanic hazard implications

Journal of Volcanology and Geothermal Research, Nov 1, 1993

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Research paper thumbnail of Evidence for lahar-triggering mechanisms in complex stratigraphic sequences: the post-twelfth century eruptive activity of Cotopaxi Volcano, Ecuador

Bulletin of Volcanology, Mar 1, 2013

ABSTRACT Cotopaxi volcano is situated in the Eastern Cordillera of the Ecuadorian Andes and consi... more ABSTRACT Cotopaxi volcano is situated in the Eastern Cordillera of the Ecuadorian Andes and consists of a symmetric volcanic cone that reaches an altitude of 5,897 m above sea level; it is capped over its upper 1,000 m by a permanent glacier. The volcano has erupted frequently in the past few centuries and, according to the archival records, has produced dozens of lahars by catastrophic snow and ice melting during eruptions. In this work, we present a detailed map and a stratigraphic study of the lahar deposits of the past 800 years in two different topographic settings. A thorough knowledge of the tephrostratigraphy of the explosive activity over the same time period was a first-order pre-requisite for the complete reconstruction and dating of lahar activity and also allowed us to precisely link lahar units to eruptive phases of individual eruptions. Results indicate that, during the thirteenth to seventeenth centuries, high-intensity eruptions (Plinian events or blast-like explosions) produced large debris flows that transported meter-sized boulders. A subsequent period of activity that started in 1742 was characterized by several lahar-generating eruptive episodes that were smaller in scale but with significant variability in size (the 1877 being the smallest and most recent). Analysis of events occurring in the eighteenth century suggests that eruption style affects the volume and energy of the resulting lahars, with different pyroclastic flow types causing different mechanisms of water release from the summit glacier. Lahars produced during this time period were triggered by: (1) dilute pumice and ash-rich radially distributed density currents and (2) column collapse-related radially distributed scoria and lithic-rich pyroclastic-flows. The former produced lahar deposits that are matrix-rich, block-poor, and valley-confined, while the high erosive capacity of the latter produced lahars that are block-rich, highly energetic, and widespread. The youngest (1853 and 1877) lahars were triggered by (3) confined scoria-flow lobes that had less capacity to scour and melt the glacier; resulting flows had lower energy and smaller volumes than lahars produced by eighteenth-century eruptions. We conclude that the dynamics of pyroclastic–density–current can exert a major control on the size and destructive capacity of lahar at ice-capped volcanoes. Moreover, the total extent of the glacier at the moment of eruption, which is commonly considered to exert a major control on lahar formation, may actually be a second-order factor compared with the way in which the eruptive products interact with the glacier.

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Research paper thumbnail of Eruptions of the last 2200 years at Vulcano and Vulcanello (Aeolian Islands, Italy) dated by high-accuracy archeomagnetism

Physics of the Earth and Planetary Interiors, Dec 1, 2006

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Research paper thumbnail of The phlegraean fields: Structural evolution, volcanic history and eruptive mechanisms

Journal of Volcanology and Geothermal Research, Sep 1, 1983

The main event within the volcanic history of the Phlegraean Fields was the eruption, about 35,00... more The main event within the volcanic history of the Phlegraean Fields was the eruption, about 35,000 years ago, of a huge alkali trachytic ignimbrite (80 km 3 , dre) followed by caldera collapse. The pre-caldera activity (evidence from geothermal wells and surface outcrops) changed from ...

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Research paper thumbnail of A Study of the 2450 BP Pululagua Plinian Eruption (Ecuador): Implications for Models of Tephra Dispersal

AGU Fall Meeting Abstracts, Dec 1, 2005

The 2450 BP Plinian eruption of Pululagua is known to have occurred in no-wind condition, resulti... more The 2450 BP Plinian eruption of Pululagua is known to have occurred in no-wind condition, resulting in circular-shape isopach and isopleth maps. Previous studies showed that the Plinian fallout is composed of 3 main units: the basal grey ash (BGA), the basal Plinian fallout (BF) and the white ash (WA). This study focuses on the BF unit, (consisting of three

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Research paper thumbnail of Historical Analysis and Stratigraphy of the Post-XII Century Pyroclastic Activity at Cotopaxi Volcano, Ecuador: Implications for Lahar Hazard Assessment

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Research paper thumbnail of Validation of Sedimentation Models: the Case Study of Pululagua Volcano, Ecuador

AGUFM, Dec 1, 2006

Tephra deposits result from the combination of plume rising and particle dispersal through the at... more Tephra deposits result from the combination of plume rising and particle dispersal through the atmosphere. The description of particle sedimentation is therefore complicated by the interaction between volcanic plumes and atmospheric processes. Most volcanic clouds are advected by tropospheric winds and Plinian eruptions typically generate columns that can reach the stratospheric jet stream. As a result, the physical model describing

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Research paper thumbnail of Probabilistic invasion maps of pyroclastic density current hazard by using long-term vent opening mapping and simplified invasion models: application to Campi Flegrei caldera (Italy)

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Research paper thumbnail of Il rischio da lahar nel Somma-Vesuvio

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Research paper thumbnail of Lahar risk assessment from source identification to potential impact analysis: the case of Vulcano Island, Italy

Journal of applied volcanology, Dec 7, 2021

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Research paper thumbnail of The Eruptive Activity of 28 and 29 December 2002

Geophysical monograph, Mar 19, 2013

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Research paper thumbnail of Defining the Pre-Eruptive States of Active Volcanoes for Improving Eruption Forecasting

Frontiers in Earth Science, Feb 17, 2022

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Research paper thumbnail of Chrono-stratigraphy of the youngest (last 1500 years) rhyolitic eruptions of Lipari (Aeolian Islands, Southern Italy) and implications for distal tephra correlations

Journal of Volcanology and Geothermal Research, 2021

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Research paper thumbnail of Quantifying volcanic hazard at Campi Flegrei caldera (Italy) with uncertainty assessment: 2. Pyroclastic density current invasion maps

Journal Of Geophysical Research: Solid Earth, Apr 1, 2015

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Research paper thumbnail of Hydrochemistry and stable isotope for groundwater hydrodynamics analysis in a karst aquifer (Alpi Apuane, Italy)

RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA, Sep 1, 2010

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Plinian pumice fall deposit of the Campanian Ignimbrite eruption (Phlegraean Fields, Italy)

Journal of Volcanology and Geothermal Research, Aug 1, 1999

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Interaction between caldera collapse and eruptive dynamics during the Campanian Ignimbrite eruption, Phlegraean Fields, Italy

Bulletin of Volcanology, Apr 1, 1996

... Page 5. Fig, 4 a Proximal deposits of the Campanian Ignimbrite eruption in the sea cliff of P... more ... Page 5. Fig, 4 a Proximal deposits of the Campanian Ignimbrite eruption in the sea cliff of Pozzo Vecchio, Procida island. The outcrop is approximately 15 m high. b Detail of the base of the sintered ig-nimbrite of unit B in the same section. ...

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Research paper thumbnail of A multidisciplinary approach in defining the hydrogeological model of the carbonate aquifer system in the Versilia River basin (Tuscany, Italy)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Guidebook of the field excursion to Phlegrean Fields and Vesuvius. Workshop on explosive volcanism

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Explanatory notes to the geological map

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Time correlation by palaeomagnetism of the 1631 eruption of Mount Vesuvius. Volcanological and volcanic hazard implications

Journal of Volcanology and Geothermal Research, Nov 1, 1993

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Evidence for lahar-triggering mechanisms in complex stratigraphic sequences: the post-twelfth century eruptive activity of Cotopaxi Volcano, Ecuador

Bulletin of Volcanology, Mar 1, 2013

ABSTRACT Cotopaxi volcano is situated in the Eastern Cordillera of the Ecuadorian Andes and consi... more ABSTRACT Cotopaxi volcano is situated in the Eastern Cordillera of the Ecuadorian Andes and consists of a symmetric volcanic cone that reaches an altitude of 5,897 m above sea level; it is capped over its upper 1,000 m by a permanent glacier. The volcano has erupted frequently in the past few centuries and, according to the archival records, has produced dozens of lahars by catastrophic snow and ice melting during eruptions. In this work, we present a detailed map and a stratigraphic study of the lahar deposits of the past 800 years in two different topographic settings. A thorough knowledge of the tephrostratigraphy of the explosive activity over the same time period was a first-order pre-requisite for the complete reconstruction and dating of lahar activity and also allowed us to precisely link lahar units to eruptive phases of individual eruptions. Results indicate that, during the thirteenth to seventeenth centuries, high-intensity eruptions (Plinian events or blast-like explosions) produced large debris flows that transported meter-sized boulders. A subsequent period of activity that started in 1742 was characterized by several lahar-generating eruptive episodes that were smaller in scale but with significant variability in size (the 1877 being the smallest and most recent). Analysis of events occurring in the eighteenth century suggests that eruption style affects the volume and energy of the resulting lahars, with different pyroclastic flow types causing different mechanisms of water release from the summit glacier. Lahars produced during this time period were triggered by: (1) dilute pumice and ash-rich radially distributed density currents and (2) column collapse-related radially distributed scoria and lithic-rich pyroclastic-flows. The former produced lahar deposits that are matrix-rich, block-poor, and valley-confined, while the high erosive capacity of the latter produced lahars that are block-rich, highly energetic, and widespread. The youngest (1853 and 1877) lahars were triggered by (3) confined scoria-flow lobes that had less capacity to scour and melt the glacier; resulting flows had lower energy and smaller volumes than lahars produced by eighteenth-century eruptions. We conclude that the dynamics of pyroclastic–density–current can exert a major control on the size and destructive capacity of lahar at ice-capped volcanoes. Moreover, the total extent of the glacier at the moment of eruption, which is commonly considered to exert a major control on lahar formation, may actually be a second-order factor compared with the way in which the eruptive products interact with the glacier.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Eruptions of the last 2200 years at Vulcano and Vulcanello (Aeolian Islands, Italy) dated by high-accuracy archeomagnetism

Physics of the Earth and Planetary Interiors, Dec 1, 2006

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The phlegraean fields: Structural evolution, volcanic history and eruptive mechanisms

Journal of Volcanology and Geothermal Research, Sep 1, 1983

The main event within the volcanic history of the Phlegraean Fields was the eruption, about 35,00... more The main event within the volcanic history of the Phlegraean Fields was the eruption, about 35,000 years ago, of a huge alkali trachytic ignimbrite (80 km 3 , dre) followed by caldera collapse. The pre-caldera activity (evidence from geothermal wells and surface outcrops) changed from ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Study of the 2450 BP Pululagua Plinian Eruption (Ecuador): Implications for Models of Tephra Dispersal

AGU Fall Meeting Abstracts, Dec 1, 2005

The 2450 BP Plinian eruption of Pululagua is known to have occurred in no-wind condition, resulti... more The 2450 BP Plinian eruption of Pululagua is known to have occurred in no-wind condition, resulting in circular-shape isopach and isopleth maps. Previous studies showed that the Plinian fallout is composed of 3 main units: the basal grey ash (BGA), the basal Plinian fallout (BF) and the white ash (WA). This study focuses on the BF unit, (consisting of three

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Historical Analysis and Stratigraphy of the Post-XII Century Pyroclastic Activity at Cotopaxi Volcano, Ecuador: Implications for Lahar Hazard Assessment

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Validation of Sedimentation Models: the Case Study of Pululagua Volcano, Ecuador

AGUFM, Dec 1, 2006

Tephra deposits result from the combination of plume rising and particle dispersal through the at... more Tephra deposits result from the combination of plume rising and particle dispersal through the atmosphere. The description of particle sedimentation is therefore complicated by the interaction between volcanic plumes and atmospheric processes. Most volcanic clouds are advected by tropospheric winds and Plinian eruptions typically generate columns that can reach the stratospheric jet stream. As a result, the physical model describing

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Probabilistic invasion maps of pyroclastic density current hazard by using long-term vent opening mapping and simplified invasion models: application to Campi Flegrei caldera (Italy)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Il rischio da lahar nel Somma-Vesuvio

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Lahar risk assessment from source identification to potential impact analysis: the case of Vulcano Island, Italy

Journal of applied volcanology, Dec 7, 2021

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Eruptive Activity of 28 and 29 December 2002

Geophysical monograph, Mar 19, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Defining the Pre-Eruptive States of Active Volcanoes for Improving Eruption Forecasting

Frontiers in Earth Science, Feb 17, 2022

Bookmarks Related papers MentionsView impact