Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms
While multispectral images have been in regular use since the 1970s, the widespread use of hyperspectral images is a relatively recent trend. This technology comprises remote measurement of specific chemical and physical properties of surface materials through imaging spectroscopy. Regional geologic...
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ftjgeusbullet:oai:geusjournals.org:article/4339 2024-09-15T18:09:39+00:00 Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms Salehi, Sara Mose Thaarup, Simon 2018-08-15 application/pdf https://geusbulletin.org/index.php/geusb/article/view/4339 https://doi.org/10.34194/geusb.v41.4339 eng eng Geological Survey of Denmark and Greenland (GEUS) https://geusbulletin.org/index.php/geusb/article/view/4339/10085 https://geusbulletin.org/index.php/geusb/article/view/4339 doi:10.34194/geusb.v41.4339 GEUS Bulletin; Vol. 41 (2018): Review of Survey activities 2017; 47-50 2597-2154 2597-2162 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rapid Communication. Peer-reviewed Article. 2018 ftjgeusbullet https://doi.org/10.34194/geusb.v41.4339 2024-08-06T03:03:36Z While multispectral images have been in regular use since the 1970s, the widespread use of hyperspectral images is a relatively recent trend. This technology comprises remote measurement of specific chemical and physical properties of surface materials through imaging spectroscopy. Regional geological mapping and mineral exploration are among the main applications that may benefit from hyperspectral technology. Minerals and rocks exhibit diagnostic spectral features throughout the electromagnetic spectrum that allow their chemical composition and relative abundance to be mapped. Most studies using hyperspectral data for geological applications have concerned areas with arid to semi-arid climates, and using airborne data collection. Other studies have investigated terrestrial outcrop sensing and integration with laser scanning 3D models in ranges of up to a few hundred metres, whereas less attention has been paid to ground-based imaging of more distant targets such as mountain ridges, cliffs or the walls of large pits. Here we investigate the potential of using such data in well-exposed Arctic regions with steep topography as part of regional geological mapping field campaigns, and to test how airborne hyperspectral data can be combined with similar data collected on the ground or from moving platforms such as a small ship. The region between the fjords Ikertoq and Kangerlussuaq (Søndre Strømfjord) in West Greenland was selected for a field study in the summer of 2016. This region is located in the southern part of the Palaeoproterozoic Nagssugtoqidian orogen and consists of high-grade metamorphic ortho- and paragneisses and metabasic rocks (see below). A regional airborne hyperspectral data set (i.e. HyMAP) was acquired here in 2002 (Tukiainen & Thorning 2005), comprising 54 flight lines covering an area of c. 7500 km2; 19 of these flight lines were selected for the present study (Fig. 1). The target areas visited in the field were selected on the basis of preliminary interpretations of HyMap scenes and ... Article in Journal/Newspaper Greenland Kangerlussuaq Søndre strømfjord GEUS Bulletin (Geological Survey of Denmark and Greenland) Geological Survey of Denmark and Greenland Bulletin 47 50 |
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English |
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While multispectral images have been in regular use since the 1970s, the widespread use of hyperspectral images is a relatively recent trend. This technology comprises remote measurement of specific chemical and physical properties of surface materials through imaging spectroscopy. Regional geological mapping and mineral exploration are among the main applications that may benefit from hyperspectral technology. Minerals and rocks exhibit diagnostic spectral features throughout the electromagnetic spectrum that allow their chemical composition and relative abundance to be mapped. Most studies using hyperspectral data for geological applications have concerned areas with arid to semi-arid climates, and using airborne data collection. Other studies have investigated terrestrial outcrop sensing and integration with laser scanning 3D models in ranges of up to a few hundred metres, whereas less attention has been paid to ground-based imaging of more distant targets such as mountain ridges, cliffs or the walls of large pits. Here we investigate the potential of using such data in well-exposed Arctic regions with steep topography as part of regional geological mapping field campaigns, and to test how airborne hyperspectral data can be combined with similar data collected on the ground or from moving platforms such as a small ship. The region between the fjords Ikertoq and Kangerlussuaq (Søndre Strømfjord) in West Greenland was selected for a field study in the summer of 2016. This region is located in the southern part of the Palaeoproterozoic Nagssugtoqidian orogen and consists of high-grade metamorphic ortho- and paragneisses and metabasic rocks (see below). A regional airborne hyperspectral data set (i.e. HyMAP) was acquired here in 2002 (Tukiainen & Thorning 2005), comprising 54 flight lines covering an area of c. 7500 km2; 19 of these flight lines were selected for the present study (Fig. 1). The target areas visited in the field were selected on the basis of preliminary interpretations of HyMap scenes and ... |
format |
Article in Journal/Newspaper |
author |
Salehi, Sara Mose Thaarup, Simon |
spellingShingle |
Salehi, Sara Mose Thaarup, Simon Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms |
author_facet |
Salehi, Sara Mose Thaarup, Simon |
author_sort |
Salehi, Sara |
title |
Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms |
title_short |
Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms |
title_full |
Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms |
title_fullStr |
Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms |
title_full_unstemmed |
Mineral mapping by hyperspectral remote sensing in West Greenland using airborne, ship-based and terrestrial platforms |
title_sort |
mineral mapping by hyperspectral remote sensing in west greenland using airborne, ship-based and terrestrial platforms |
publisher |
Geological Survey of Denmark and Greenland (GEUS) |
publishDate |
2018 |
url |
https://geusbulletin.org/index.php/geusb/article/view/4339 https://doi.org/10.34194/geusb.v41.4339 |
genre |
Greenland Kangerlussuaq Søndre strømfjord |
genre_facet |
Greenland Kangerlussuaq Søndre strømfjord |
op_source |
GEUS Bulletin; Vol. 41 (2018): Review of Survey activities 2017; 47-50 2597-2154 2597-2162 |
op_relation |
https://geusbulletin.org/index.php/geusb/article/view/4339/10085 https://geusbulletin.org/index.php/geusb/article/view/4339 doi:10.34194/geusb.v41.4339 |
op_doi |
https://doi.org/10.34194/geusb.v41.4339 |
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Geological Survey of Denmark and Greenland Bulletin |
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47 |
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50 |
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1810447232710737920 |