Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2016, Vol. 13, No. 2, pp. 153-163
Mapping of volcanic eruption based on InSAR
P.G. Mikhaylyukova
1 , O.V. Tutubalina
1 1 M.V. Lomonosov Moscow State University, Moscow, Russia
Accepted: 18.02.2016
DOI: 10.21046/2070-7401-2016-13-2-153-163
This paper presents results of our study of two-pass differential radar interferometry as an independent method of mapping changes in lava flow topography. The study region is Tolbachinsky Dol (Kamchatka), where a fissure eruption occurred in 2012–2013. Remote sensing data (optical and radar imagery) were regularly acquired during the whole eruption period. Radar imagery was acquired by Radarsat-2 in June – October 2013 from both descending and ascending orbits. These series of radar interferometric pairs, optical imagery, digital elevation model (DEM) and results of fieldwork provide valuable information for complex thematic mapping. A series of thematic maps was created as a result of the study. They show dynamics of lava flow areas and also provide complex maps of lava flow formation. These maps demonstrate the possibility of radar interferometry for thematic mapping topography changes in volcanic regions. We analyzed the method accuracy using two series of radar imagery (from ascending and descending orbits). The comparison showed good agreement between maps based on the processed radar data from different orbits.
Keywords: interferometry, 2012-2013 Tolbachik fissure eruption, lava flow, mapping
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