Volcanic ash cloud detection from space: a comparison between the RSTASH technique and the water vapour corrected BTD procedure (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Volcanic ash cloud detection from space: a comparison between the RSTASH technique and the water vapour corrected BTD procedure (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1080/19475705.2011.568069 (literal)

Alternative label

• Piscini A., Corradini S., Marchese F., Merucci L., Pergola N., Tramutoli V. (2011)
  Volcanic ash cloud detection from space: a comparison between the RSTASH technique and the water vapour corrected BTD procedure
  in Geomatics, natural hazards & risk (Print); Taylor and Francis, Abingdon (Regno Unito)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Piscini A., Corradini S., Marchese F., Merucci L., Pergola N., Tramutoli V. (literal)

Pagina inizio

• 263 (literal)

Pagina fine

• 277 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.tandfonline.com/doi/abs/10.1080/19475705.2011.568069 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 2 (literal)

Rivista

• Geomatics, natural hazards & risk (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 16 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 3 (literal)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Istituto Nazionale di Geofisica e Vulcanologia, via di Vigna Murata 605, 00143 Roma, Italy. CNR-IMAA, Institute of Methodologies for Environmental Analysis, National Research Council, C. da S. Loja, 85050 Tito Scalo, Potenza, Italy. Department of Engineering and Physics of the Environment, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy. (literal)

Titolo

• Volcanic ash cloud detection from space: a comparison between the RSTASH technique and the water vapour corrected BTD procedure (literal)

Abstract

• Volcanic eruptions can inject large amounts (Tg) of gas and particles into the troposphere and, sometimes, into the stratosphere. Besides the main gases (H 2O, CO 2, SO 2 and HCl), volcanic clouds contain a mix of silicate ash particles in the size range from 0.1 ?m to 1 mm or larger. The interest in volcanic ash detection is high, particularly because it represents a serious hazard for air traffic. Particles with dimensions of several millimetres can damage the aircraft structure (windows, wings, ailerons), while particles less than 10 ?m may be extremely dangerous for the jet engines and are undetectable by the pilots during night or in low visibility conditions. Furthermore, ash detection represents a critical step towards quantitative retrievals of plume parameters. In this paper two different satellite techniques for volcanic cloud detection and tracking are compared, namely a water vapour corrected version of the brightness temperature difference (BTD-WVC) procedure and an implementation of the robust satellite technique, specifically configured for volcanic ash (RST ASH). The BTD method identifies volcanic ash clouds on the basis of the brightness temperature difference measured in two infrared spectral bands at around 11 and 12 ?m. To account for the atmospheric water vapour differential absorption in the 11-12 ?m spectral range, which tends to reduce (and in some cases completely mask) the BTD signal, a water vapour correction procedure has been developed (BTD-WVC), based on measured or synthetic atmospheric profiles. RST ASH instead, is based on the analysis of a time series of satellite records, aimed at identifying signal anomalies through an automatic unsupervised change detection step. To assess the performance of the BTD-WVC and RST ASH methods in detecting volcanic ash clouds, some eruptive events of Mt Etna, observed by the Advanced Very High Resolution Radiometer (AVHRR) sensor, have been analysed. The obtained results show a good agreement between the BTD-WVC and RST ASH techniques for all the considered images, in terms of pixels detected as 'ash affected' (i.e. the ash cloud area). In particular, compared to the traditional BTD procedure, the BTD-WVC and RST ASH techniques significantly improve volcanic ash cloud detection, both in daytime and night-time data, especially in the case of low ash loading. (literal)

Editore

• Taylor and Francis (Editore)

Prodotto di

• Istituto di metodologie per l'analisi ambientale (IMAA) (Istituto)
• GdR: Metodi e Tecniche OT multi-piattaforma per la Caratterizzazione dei Processi di Superficie e per il monitoraggio NRT dei Rischi naturali ed Antropici (TA.P06.023.001) (Modulo)

Autore CNR

• NICOLA PERGOLA (Unità di personale interno)
• FRANCESCO MARCHESE (Persona)

Insieme di parole chiave

• Keywords of "Volcanic ash cloud detection from space: a comparison between the RSTASH technique and the water vapour corrected BTD procedure" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di metodologie per l'analisi ambientale (IMAA) (Istituto)
• GdR: Metodi e Tecniche OT multi-piattaforma per la Caratterizzazione dei Processi di Superficie e per il monitoraggio NRT dei Rischi naturali ed Antropici (TA.P06.023.001) (Modulo)

Autore CNR di

• NICOLA PERGOLA (Unità di personale interno)
• FRANCESCO MARCHESE (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Geomatics, natural hazards & risk (Rivista)

Editore di

• Taylor and Francis (Editore)

Insieme di parole chiave di

• Keywords of "Volcanic ash cloud detection from space: a comparison between the RSTASH technique and the water vapour corrected BTD procedure" (Insieme di parole chiave)