Particle size distribution analyses of volcanic ash from Campi Flegrei (Italy) and Sakurajima (Japan) volcanoes

Tipo Dataset Classe Dati Vulcanologici

Multi-Wavelength Separation Analyser Grain Size Distribution Phonolite Andesite Epos Multi-Scale Laboratories Rock And Melt Physical Properties

This data publication includes particle size distribution data of natural volcanic ash samples used as starting material for laboratory experiments simulating the aggregation/disaggregation of colliding volcanic ash particles. Full details of the experimental method can be found in Del Bello et. al. (2015) and in the data description file provided here.n Here we report raw particle size distribution data obtained through separation analysis. Two types of volcanic ash were analysed: i) andesitic ash from the Sakurajima volcano (Japan), collected from July 2013 deposits (named Sak sample); ii) phonolitic ash collected from the basal fallout layer of the ~10 ka old Pomici Principali eruptive unit [Di Vito et al., 1999]) of the Campi Flegrei (named Ppa). For both compositions, 3 different starting materials were obtained by hand sieving the natural samples into three main particle size classes: (i) <32 μm, (ii) 32–63 μm, and (iii) 63–90 μm. For the phonolitic composition Ppa two additional starting materials were obtained by mixing the <32 μm and the 32–63 μm classes in known proportions. n For each starting material, the grain size distribution of the sample was measured by a multiwavelength separation analyzer (LUMIReader®, This device measures space and time resolved profiles of the transmitted light across the water-diluted sample (5% solid content) during sedimentation of particles. The cumulative volume-weighted particle size distribution is obtained from the extinction profiles using the multi-wavelength Particle size Analyser modulus (PSA). Details on the sample preparation procedure can be found in Detloff et al. (2006). n For each measurement performed (see Table 1), a pdf file and a excel file are provided. The pdf file lists the analysis summary, including a description of the analysis settings and conditions, materials used, and distribution model adopted for the fit. It also provides graphs of the obtained volume weighted cumulative grain size distribution, and of the measured transmission profiles for each wavelength (870 nm, 630 nm and 470 nm, respectively). The Excel (.xlsx format) file include 4 datasheets, listing the results (sheet name ending _R) and the fit data (sheet names ending _F01,_F02, *_F03) obtained for the different instrument wavelength. In each datasheet the following data are listed in the columns: particle grain size (x3 in µm), volume weighted distribution (Q3(x) in %), Martin diameter (x3m in µm), volume weighted density distribution (q3(x) in 1/µm). The fit datasheets also include information on the fit such as distribution model used and distribution parameters (quantiles, median, standard deviation, span, etc..).n A full list of the files included is given in List_of_files_DelBello et al 2017.pdf.

Data e Risorse

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Citare come

Del Bello E., Taddeucci J., Scarlato P., Giacalone E. (2017). Particle size distribution analyses of volcanic ash from Campi Flegrei (Italy) and Sakurajima (Japan) volcanoes [Data set]. GFZ Data Services.

Formati di codifica dei dati disponibili pdf zip xlsx

Nome campo Valore
Identificativo del dataset (DOI) 10.5880/fidgeo.2017.013
Altro identificativo Codice: ingv_760
Gestore del codice: INGV
Temi del dataset Scienza e tecnologia
Editore del Dataset GFZ Data Services
Data di rilascio 01-01-2017
Data di modifica 11-03-2022
Copertura Geografica Area di competenza dell'unità organizzativa preposta
URI di GeoNames Non disponibile
Lingue del dataset italiano
Estensione temporale Non disponibile
Titolare Istituto Nazionale di Geofisica e Vulcanologia (INGV)
ROR 00qps9a02
IPA ingv
Frequenza di aggiornamento mai
Versione di Non disponibile
Spatial extent {"type": "MultiPolygon","coordinates": [[[ [130.648,31.5896], [130.675,31.5896], [130.675,31.5686], [130.648,31.5686], [130.648,31.5896] ]],[[ [14.0343,40.9146], [14.3083,40.9146], [14.3083,40.7691], [14.0343,40.7691], [14.0343,40.9146] ]]]}
Autori DEL BELLO Elisabetta
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy
SCARLATO Piergiorgio
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy
Sapienza University of Rome (Uni Sapienza), Italy

Altri contributori

  • DEL BELLO Elisabetta (Ricercatore)
  • DEL BELLO Elisabetta (Raccoglitore di dati)
  • TADDEUCCI Jacopo (Ricercatore)
  • TADDEUCCI Jacopo (Raccoglitore di dati)
  • SCARLATO Piergiorgio (Ricercatore)
  • SCARLATO Piergiorgio (Raccoglitore di dati)
  • SCARLATO Piergiorgio (Gestore dei dati)
  • GIACALONE Emanuele (Raccoglitore di dati)

Progetti finanziatori

  • MED-SUV - Mediterranean Supersite Volcanoes
    European Commission (EC) - FP7-ENVIRONMENT
    [ 2013-06-01 ⇒ 2016-05-31 ]
  • INGV-DPC V1 2012-2013
    Presidenza del Consiglio dei Ministri - Dipartimento della Protezione Civile (DPC)
    [ 2012-07-01 ⇒ 2013-09-30 ]
  • INGV-DPC V1 2014-2015
    Presidenza del Consiglio dei Ministri - Dipartimento della Protezione Civile (DPC)
    [ 2014-05-01 ⇒ 2015-04-30 ]

Schema dati