The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface
The Holuhraun lava flow was the largest effusive eruption in Iceland for 230 years, with an estimated lava bulk volume of ~1.44 km 3 and covering an area of ~84 km 2 . The six month long eruption at Holuhraun 2014⁻2015 generated a diverse surface environment. Therefore, the abundant data of airborne...
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ftdoajarticles:oai:doaj.org/article:62414ac32dc24a9baa779a279492dba5 2023-05-15T16:48:20+02:00 The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface Muhammad Aufaristama Armann Hoskuldsson Magnus Orn Ulfarsson Ingibjorg Jonsdottir Thorvaldur Thordarson 2019-02-01T00:00:00Z https://doi.org/10.3390/rs11050476 https://doaj.org/article/62414ac32dc24a9baa779a279492dba5 EN eng MDPI AG https://www.mdpi.com/2072-4292/11/5/476 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs11050476 https://doaj.org/article/62414ac32dc24a9baa779a279492dba5 Remote Sensing, Vol 11, Iss 5, p 476 (2019) hyperspectral FENIX lava field SMACC LSMA Science Q article 2019 ftdoajarticles https://doi.org/10.3390/rs11050476 2022-12-31T16:12:15Z The Holuhraun lava flow was the largest effusive eruption in Iceland for 230 years, with an estimated lava bulk volume of ~1.44 km 3 and covering an area of ~84 km 2 . The six month long eruption at Holuhraun 2014⁻2015 generated a diverse surface environment. Therefore, the abundant data of airborne hyperspectral imagery above the lava field, calls for the use of time-efficient and accurate methods to unravel them. The hyperspectral data acquisition was acquired five months after the eruption finished, using an airborne FENIX-Hyperspectral sensor that was operated by the Natural Environment Research Council Airborne Research Facility (NERC-ARF). The data were atmospherically corrected using the Quick Atmospheric Correction (QUAC) algorithm. Here we used the Sequential Maximum Angle Convex Cone (SMACC) method to find spectral endmembers and their abundances throughout the airborne hyperspectral image. In total we estimated 15 endmembers, and we grouped these endmembers into six groups; (1) basalt; (2) hot material; (3) oxidized surface; (4) sulfate mineral; (5) water; and (6) noise. These groups were based on the similar shape of the endmembers; however, the amplitude varies due to illumination conditions, spectral variability, and topography. We, thus, obtained the respective abundances from each endmember group using fully constrained linear spectral mixture analysis (LSMA). The methods offer an optimum and a fast selection for volcanic products segregation. However, ground truth spectra are needed for further analysis. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Holuhraun ENVELOPE(-16.831,-16.831,64.852,64.852) Remote Sensing 11 5 476 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
hyperspectral FENIX lava field SMACC LSMA Science Q |
spellingShingle |
hyperspectral FENIX lava field SMACC LSMA Science Q Muhammad Aufaristama Armann Hoskuldsson Magnus Orn Ulfarsson Ingibjorg Jonsdottir Thorvaldur Thordarson The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface |
topic_facet |
hyperspectral FENIX lava field SMACC LSMA Science Q |
description |
The Holuhraun lava flow was the largest effusive eruption in Iceland for 230 years, with an estimated lava bulk volume of ~1.44 km 3 and covering an area of ~84 km 2 . The six month long eruption at Holuhraun 2014⁻2015 generated a diverse surface environment. Therefore, the abundant data of airborne hyperspectral imagery above the lava field, calls for the use of time-efficient and accurate methods to unravel them. The hyperspectral data acquisition was acquired five months after the eruption finished, using an airborne FENIX-Hyperspectral sensor that was operated by the Natural Environment Research Council Airborne Research Facility (NERC-ARF). The data were atmospherically corrected using the Quick Atmospheric Correction (QUAC) algorithm. Here we used the Sequential Maximum Angle Convex Cone (SMACC) method to find spectral endmembers and their abundances throughout the airborne hyperspectral image. In total we estimated 15 endmembers, and we grouped these endmembers into six groups; (1) basalt; (2) hot material; (3) oxidized surface; (4) sulfate mineral; (5) water; and (6) noise. These groups were based on the similar shape of the endmembers; however, the amplitude varies due to illumination conditions, spectral variability, and topography. We, thus, obtained the respective abundances from each endmember group using fully constrained linear spectral mixture analysis (LSMA). The methods offer an optimum and a fast selection for volcanic products segregation. However, ground truth spectra are needed for further analysis. |
format |
Article in Journal/Newspaper |
author |
Muhammad Aufaristama Armann Hoskuldsson Magnus Orn Ulfarsson Ingibjorg Jonsdottir Thorvaldur Thordarson |
author_facet |
Muhammad Aufaristama Armann Hoskuldsson Magnus Orn Ulfarsson Ingibjorg Jonsdottir Thorvaldur Thordarson |
author_sort |
Muhammad Aufaristama |
title |
The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface |
title_short |
The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface |
title_full |
The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface |
title_fullStr |
The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface |
title_full_unstemmed |
The 2014–2015 Lava Flow Field at Holuhraun, Iceland: Using Airborne Hyperspectral Remote Sensing for Discriminating the Lava Surface |
title_sort |
2014–2015 lava flow field at holuhraun, iceland: using airborne hyperspectral remote sensing for discriminating the lava surface |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/rs11050476 https://doaj.org/article/62414ac32dc24a9baa779a279492dba5 |
long_lat |
ENVELOPE(-16.831,-16.831,64.852,64.852) |
geographic |
Holuhraun |
geographic_facet |
Holuhraun |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Remote Sensing, Vol 11, Iss 5, p 476 (2019) |
op_relation |
https://www.mdpi.com/2072-4292/11/5/476 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs11050476 https://doaj.org/article/62414ac32dc24a9baa779a279492dba5 |
op_doi |
https://doi.org/10.3390/rs11050476 |
container_title |
Remote Sensing |
container_volume |
11 |
container_issue |
5 |
container_start_page |
476 |
_version_ |
1766038444374491136 |