scholarly journals Verification of Hydraulic Equivalence during Clastic Sedimentation : Examples from Tephra Fallout and Sandstones

1989 ◽  
Vol 26 (3) ◽  
pp. 243-263
Author(s):  
Yuichiro Miyata
Keyword(s):  
Tephra Fallout

scholarly journals Aeolian Remobilisation of the 2011-Cordón Caulle Tephra-Fallout Deposit: Example of an Important Process in the Life Cycle of Volcanic Ash

2020 ◽  
Vol 7 ◽  
Author(s):  
Lucia Dominguez ◽  
Costanza Bonadonna ◽  
Pablo Forte ◽  
Paul Antony Jarvis ◽  
Raffaello Cioni ◽  
...  
Keyword(s):  
Life Cycle ◽  
Volcanic Ash ◽  
Important Process ◽  
Tephra Fallout

Tephra fallout in the eruption of Soufrière Hills Volcano, Montserrat

2002 ◽  
Vol 21 (1) ◽  
pp. 483-516 ◽  
Author(s):  
C. Bonadonna ◽  
G. C. Mayberry ◽  
E. S. Calder ◽  
R. S. J. Sparks ◽  
C. Choux ◽  
...  
Keyword(s):  
Soufriere Hills Volcano ◽  
Soufrière Hills Volcano ◽  
Soufriere Hills ◽  
Tephra Fallout

scholarly journals Mapping the susceptibility of rain-triggered lahars at Vulcano island (Italy) combining field characterization, geotechnical analysis, and numerical modelling

2019 ◽  
Vol 19 (11) ◽  
pp. 2421-2449 ◽  
Author(s):  
Valérie Baumann ◽  
Costanza Bonadonna ◽  
Sabatino Cuomo ◽  
Mariagiovanna Moscariello ◽  
Sebastien Biass ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Slope Angle ◽  
Field Measurements ◽  
Friction Angle ◽  
Unit Weight ◽  
Residual Water ◽  
Probabilistic Modelling ◽  
Cascading Effect ◽  
Geotechnical Tests ◽  
Tephra Fallout

Abstract. The characterization of triggering dynamics and remobilized volumes is crucial to the assessment of associated lahar hazards. We propose an innovative treatment of the cascading effect between tephra fallout and lahar hazards based on probabilistic modelling that also accounts for a detailed description of source sediments. As an example, we have estimated the volumes of tephra fallout deposit that could be remobilized by rainfall-triggered lahars in association with two eruptive scenarios that have characterized the activity of the La Fossa cone (Vulcano, Italy) in the last 1000 years: a long-lasting Vulcanian cycle and a subplinian eruption. The spatial distribution and volume of deposits that could potentially trigger lahars were analysed based on a combination of tephra fallout probabilistic modelling (with TEPHRA2), slope-stability modelling (with TRIGRS), field observations, and geotechnical tests. Model input data were obtained from both geotechnical tests and field measurements (e.g. hydraulic conductivity, friction angle, cohesion, total unit weight of the soil, and saturated and residual water content). TRIGRS simulations show how shallow landsliding is an effective process for eroding pyroclastic deposits on Vulcano. Nonetheless, the remobilized volumes and the deposit thickness threshold for lahar initiation strongly depend on slope angle, rainfall intensity, grain size, friction angle, hydraulic conductivity, and the cohesion of the source deposit.

A Laacher See-eruption supplement to Tephrabase: Investigating distal tephra fallout dynamics

2011 ◽  
Vol 246 (1-2) ◽  
pp. 134-144 ◽  
Author(s):  
Felix Riede ◽  
Oliver Bazely ◽  
Anthony J. Newton ◽  
Christine S. Lane
Keyword(s):  
Tephra Fallout

scholarly journals BET_VH: exploring the influence of natural uncertainties on long-term hazard from tephra fallout at Campi Flegrei (Italy)

2010 ◽  
Vol 72 (6) ◽  
pp. 717-733 ◽  
Author(s):  
Jacopo Selva ◽  
Antonio Costa ◽  
Warner Marzocchi ◽  
Laura Sandri
Keyword(s):  
Campi Flegrei ◽  
Tephra Fallout

scholarly journals Efficient inversion and uncertainty quantification of a tephra fallout model

2017 ◽  
Vol 122 (1) ◽  
pp. 281-294 ◽  
Author(s):  
J. T. White ◽  
C. B. Connor ◽  
L. Connor ◽  
T. Hasenaka
Keyword(s):  
Uncertainty Quantification ◽  
Tephra Fallout
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