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dc.contributor.authorallMerucci, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia-
dc.contributor.authorallBogliolo, M. P.; Istituto Superiore per la Prevenzione e la Sicurezza del Lavoro, Monteporzio Catone (RM), Italy-
dc.contributor.authorallBuongiorno, M. F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia-
dc.contributor.authorallTeggi, S.; Università di Modena e Reggio Emilia, Modena, Italy-
dc.description.abstractQuantitative maps of surface temperature and spectral emissivity have been retrieved on the Solfatara crater at Pozzuoli (Naples) from remote sensing hyperspectral data. The present study relies on thermal infrared images collected on July 27, 1997 by the DAIS hyperspectral sensor, owned by the German aerospace center (DLR). The Emissivity Spectrum Normalization method was used to make temperature and emissivity estimates. Raw data were previously transformed in radiance and corrected for the atmospheric contributes using the MODTRAN radiative transfer code and the sensor response functions. During the DAIS flight a radiosonde was launched to collect the atmospheric profiles of pressure, temperature and humidity used as input to the code. Retrieved temperature values are in good agreement with temperature measures performed in situ during the campaign. The spectral emissivity map was used to classify the image in different geomineralogical units with the Spectral Angle Mapper method. Areas of geologic interest were previously selected using a mask obtained from an NDVI image calculated with two channels of the visible (red) and the near infrared respectively.en
dc.format.extent1669492 bytes-
dc.subjectSpectral emissivityen
dc.subjectDAIS hyperspectral imagesen
dc.subjectSolfatara crateren
dc.titleSpectral emissivity and temperature maps of the Solfatara crater from DAIS hyperspectral imagesen
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneousen
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dc.contributor.authorMerucci, L.-
dc.contributor.authorBogliolo, M. P.-
dc.contributor.authorBuongiorno, M. F.-
dc.contributor.authorTeggi, S.-
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia-
dc.contributor.departmentIstituto Superiore per la Prevenzione e la Sicurezza del Lavoro, Monteporzio Catone (RM), Italy-
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia-
dc.contributor.departmentUniversità di Modena e Reggio Emilia, Modena, Italy-
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