DOI: 10.1002/grl.50983
论文题名: Separating the thermal fingerprints of lava flows and simultaneous lava fountaining using ground-based thermal camera and SEVIRI measurements
作者: Ganci G. ; James M.R. ; Calvari S. ; Negro C.D.
刊名: Geophysical Research Letters
ISSN: 0094-8493
EISSN: 1944-8224
出版年: 2013
卷: 40, 期: 19 起始页码: 5058
结束页码: 5063
语种: 英语
英文关键词: Etna volcano
; lava fountains
; Meteosat SEVIRI imagery
; thermal camera images
Scopus关键词: Effusive eruptions
; Etna volcanos
; Lava fountains
; Meteosat
; Satellite monitoring
; Spinning Enhanced Visible and Infrared Imager
; Thermal camera
; Thermal contributions
; Cameras
; Fountains
; Infrared devices
; Satellites
; Heat flux
; cooling
; heat flux
; image resolution
; lava flow
; pixel
; satellite data
; SEVIRI
; Catania [Sicily]
; Etna
; Italy
; Sicily
英文摘要: During effusive eruptions, thermal satellite monitoring has proved well suited to map the thermal flux from lava flows. However, during lava fountaining events, thermal contributions from active flows and from the fountain itself cannot be separated in low resolution satellite data. Here using photogrammetry and atmospheric modeling techniques, we compare radiance estimates from long-range ground-based thermal camera data (from which the fountain can be excluded) with those from SEVIRI satellite images for a fountaining event at Mount Etna (12 August 2011). The radiant heat flux determined from the ground-based camera showed similar behavior to values retrieved from Spinning Enhanced Visible and Infrared Imager (SEVIRI); thus the SEVIRI signal is interpreted to be dominated by the lava flows, with minimal contribution from the fountain. Furthermore, by modeling the cooling phase of each pixel inundated by lava, the mean thickness and lava volume (∼2.4 × 106 m3) derived from camera images are comparable with those calculated from SEVIRI (∼2.8 × 106 m3). Key Points A new technique to analyze long-range ground-based thermal images is developed Heat flux and lava volume derived from camera and SEVIRI data are comparable SEVIRI data are more sensitive to lava flows than to simultaneous fountaining ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884836801&doi=10.1002%2fgrl.50983&partnerID=40&md5=8e73d03dbf98bc5907e57fd82b86a1b0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5757
Appears in Collections: 气候减缓与适应
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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania, Piazza Roma 2, 95125, Italy
Recommended Citation:
Ganci G.,James M.R.,Calvari S.,et al. Separating the thermal fingerprints of lava flows and simultaneous lava fountaining using ground-based thermal camera and SEVIRI measurements[J]. Geophysical Research Letters,2013-01-01,40(19).