High-resolution digital elevation model from tri-stereo Pleiades-1 satellite imagery for lava flow volume estimates at Fogo Volcano



Bagnardi, Marco, Gonzalez, Pablo J ORCID: 0000-0002-1767-1164 and Hooper, Andrew
(2016) High-resolution digital elevation model from tri-stereo Pleiades-1 satellite imagery for lava flow volume estimates at Fogo Volcano. GEOPHYSICAL RESEARCH LETTERS, 43 (12). pp. 6267-6275.

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Abstract

<jats:title>Abstract</jats:title><jats:p>Resolving changes in topography through time using accurate high‐resolution digital elevation models (DEMs) is key to understanding active volcanic processes. For the first time in a volcanic environment, we utilize very high‐resolution tri‐stereo optical imagery acquired by the Pleiades‐1 satellite constellation and generate a 1 m resolution DEM of Fogo Volcano, Cape Verde—the most active volcano in the Eastern Atlantic region. Point cloud density is increased by a factor of 6.5 compared to conventional stereo imagery, and the number of 1 m<jats:sup>2</jats:sup> pixels with no height measurements is reduced by 43%. We use the DEM to quantify topographic changes associated with the 2014–2015 eruption at Fogo. Height differences between the posteruptive Pleiades‐1 DEM and the preeruptive topography from TanDEM‐X give a lava flow volume of 45.83 ± 0.02 × 10<jats:sup>6</jats:sup> m<jats:sup>3</jats:sup>, emplaced over an area of 4.8 km<jats:sup>2</jats:sup> at a mean rate of 6.8 m<jats:sup>3</jats:sup> s<jats:sup>−1</jats:sup>.</jats:p>

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 15 Jul 2016 13:46
Last Modified: 04 Sep 2023 18:51
DOI: 10.1002/2016GL069457
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3002355