NDLI: Preliminary results of lava flow mapping using remote sensing in Piton de la Fournaise, La Réunion island

Content Provider	IEEE Xplore Digital Library
Author	Zarah, S. Nicolas, V. Minoru, U. Thomas, S. Astrid, G.
Copyright Year	2008
Description	Author affiliation: CNRS, Inst. de Phys. du Globe (IPGP), France (Thomas, S.) \|\| Inst. de Rech. pour le Dev., Campus Univ. du Moufia, Sainte-Clotilde, Reunion (Nicolas, V.) \|\| Geol. Survey of Japan, Nat. Inst. of Adv. Ind. Sci. & Technol. (AIST), Tsukuba, Japan (Minoru, U.) \|\| Inst., de Rech. pour le Dev., Univ. de La Reunion, St. Denis, France (Zarah, S.) \|\| Ecole Nat. des Sci. Geographiques, Marne la Vallee, France (Astrid, G.)
Abstract	The use of remote sensing is more and more incontrovertible in volcanic monitoring, especially in INSAR and thermal studies. A comprehensive database of high-resolution multispectral and multitemporal optical satellite imagery exists for Piton de la Fournaise, the active volcano on La Reunion Island. This database, however, remains relatively underexploited in volcanological studies of Piton de la Fournaise. Using a large image data set including SPOT 5 and 4, ASTER and aerial photography, we performed cartography of recent lava flows. Different methods were applied for each sensor in order to extract and map lava flow contours and surface morphology. These methods include photo interpretation as well as fusion of thermal band and optical images. In addition we performed several tests with specific software combining object and spectral based techniques. Subsequently, a simple statistical comparison between different perimeters and areas mapped allowed us to determine a precision ratio. Results show that difficulties in extracting contours arise when the study area is a complex lava flow field where the different lava flows overlap, or have a similar textural and radiometric characteristics.
Starting Page	1
Ending Page	4
File Size	373665
Page Count	4
File Format	PDF
ISBN	9781424425464
DOI	10.1109/USEREST.2008.4740339
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-11
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Piton de la Fournaise Automatic Mapping Satellite broadcasting Surface morphology Principal components analysis remote sensing Synthetic aperture radar interferometry Data mining Remote sensing Photography Image databases Volcanoes Optical sensors Remote monitoring
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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