High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen
Structure-from-motion (SfM) photogrammetry has become an important tool for the digitalisation of outcrops as digital outcrop models (DOMs). DOMs facilitate the mapping of stratigraphy and discontinuous structures like folds, faults, and fractures from the centimetre to kilometre scale. With pristin...
Published in: | Earth System Science Data |
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Language: | English |
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2024
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Online Access: | https://orbit.dtu.dk/en/publications/76209412-94e1-4e65-a532-31582e494c1e https://doi.org/10.5194/essd-16-985-2024 https://backend.orbit.dtu.dk/ws/files/355134521/essd-16-985-2024.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/76209412-94e1-4e65-a532-31582e494c1e 2024-09-15T18:38:27+00:00 High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen Betlem, Peter Birchall, Thomas Lord, Gareth Oldfield, Simon Nakken, Lise Ogata, Kei Senger, Kim 2024 application/pdf https://orbit.dtu.dk/en/publications/76209412-94e1-4e65-a532-31582e494c1e https://doi.org/10.5194/essd-16-985-2024 https://backend.orbit.dtu.dk/ws/files/355134521/essd-16-985-2024.pdf eng eng https://orbit.dtu.dk/en/publications/76209412-94e1-4e65-a532-31582e494c1e info:eu-repo/semantics/openAccess Betlem , P , Birchall , T , Lord , G , Oldfield , S , Nakken , L , Ogata , K & Senger , K 2024 , ' High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen ' , Earth System Science Data , vol. 16 , no. 2 , pp. 985-1006 . https://doi.org/10.5194/essd-16-985-2024 article 2024 ftdtupubl https://doi.org/10.5194/essd-16-985-2024 2024-08-13T00:03:07Z Structure-from-motion (SfM) photogrammetry has become an important tool for the digitalisation of outcrops as digital outcrop models (DOMs). DOMs facilitate the mapping of stratigraphy and discontinuous structures like folds, faults, and fractures from the centimetre to kilometre scale. With pristine, treeless exposures, the outcropping strata in Svalbard, Arctic Norway, hold exceptional potential for analogue studies and are ideally suited for the acquisition of high-resolution DOMs. Here, we present the acquisition, processing, and integration of the Konusdalen West digital model data set, comprising both DOM and derived digital terrain model (DTM) data. Drone-based image acquisition took place over 2 weeks in July and August 2020. The Konusdalen West DOM and DTM cover a 0.12km2 area and span a 170m elevation difference. The DOM covers the upper two-thirds of the mudstone-dominated Late Jurassic-Early Cretaceous Agardhfjellet Formation. The Agardhfjellet Formation and its time equivalents are regional cap rocks for CO2 sequestration and petroleum accumulations on the Norwegian Continental Shelf. A total of 15 differential GNSS control points were used to georeference and quality assure the digital data assets, 5 of which function as reference checkpoints. SfM processing of 5512 acquired images resulted in high-confidence, centimetre-scale resolution point clouds, textured mesh (DOM), tiled model, orthomosaics, and a DTM. The confidence-filtered dense cloud features an average inter-point distance of 1.57cm and has an average point density of 3824.9 points per metre. The five checkpoints feature root mean square errors of 2.0cm in X, 1.3cm in Y, 5.2cm in Z, and 5.7cm in XYZ. Increased confidences and densities are present along the western flank of the Konusdalen West outcrop, where a fault fracture network in mudstone-dominated strata is best exposed and photographed most extensively. Top and side view orthomosaics feature maximum resolutions of 8mm per pixel, enabling the mapping of faults, formation members, ... Article in Journal/Newspaper Svalbard Spitsbergen Technical University of Denmark: DTU Orbit Earth System Science Data 16 2 985 1006 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
Structure-from-motion (SfM) photogrammetry has become an important tool for the digitalisation of outcrops as digital outcrop models (DOMs). DOMs facilitate the mapping of stratigraphy and discontinuous structures like folds, faults, and fractures from the centimetre to kilometre scale. With pristine, treeless exposures, the outcropping strata in Svalbard, Arctic Norway, hold exceptional potential for analogue studies and are ideally suited for the acquisition of high-resolution DOMs. Here, we present the acquisition, processing, and integration of the Konusdalen West digital model data set, comprising both DOM and derived digital terrain model (DTM) data. Drone-based image acquisition took place over 2 weeks in July and August 2020. The Konusdalen West DOM and DTM cover a 0.12km2 area and span a 170m elevation difference. The DOM covers the upper two-thirds of the mudstone-dominated Late Jurassic-Early Cretaceous Agardhfjellet Formation. The Agardhfjellet Formation and its time equivalents are regional cap rocks for CO2 sequestration and petroleum accumulations on the Norwegian Continental Shelf. A total of 15 differential GNSS control points were used to georeference and quality assure the digital data assets, 5 of which function as reference checkpoints. SfM processing of 5512 acquired images resulted in high-confidence, centimetre-scale resolution point clouds, textured mesh (DOM), tiled model, orthomosaics, and a DTM. The confidence-filtered dense cloud features an average inter-point distance of 1.57cm and has an average point density of 3824.9 points per metre. The five checkpoints feature root mean square errors of 2.0cm in X, 1.3cm in Y, 5.2cm in Z, and 5.7cm in XYZ. Increased confidences and densities are present along the western flank of the Konusdalen West outcrop, where a fault fracture network in mudstone-dominated strata is best exposed and photographed most extensively. Top and side view orthomosaics feature maximum resolutions of 8mm per pixel, enabling the mapping of faults, formation members, ... |
format |
Article in Journal/Newspaper |
author |
Betlem, Peter Birchall, Thomas Lord, Gareth Oldfield, Simon Nakken, Lise Ogata, Kei Senger, Kim |
spellingShingle |
Betlem, Peter Birchall, Thomas Lord, Gareth Oldfield, Simon Nakken, Lise Ogata, Kei Senger, Kim High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen |
author_facet |
Betlem, Peter Birchall, Thomas Lord, Gareth Oldfield, Simon Nakken, Lise Ogata, Kei Senger, Kim |
author_sort |
Betlem, Peter |
title |
High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen |
title_short |
High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen |
title_full |
High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen |
title_fullStr |
High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen |
title_full_unstemmed |
High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen |
title_sort |
high-resolution digital outcrop model of the faults, fractures, and stratigraphy of the agardhfjellet formation cap rock shales at konusdalen west, central spitsbergen |
publishDate |
2024 |
url |
https://orbit.dtu.dk/en/publications/76209412-94e1-4e65-a532-31582e494c1e https://doi.org/10.5194/essd-16-985-2024 https://backend.orbit.dtu.dk/ws/files/355134521/essd-16-985-2024.pdf |
genre |
Svalbard Spitsbergen |
genre_facet |
Svalbard Spitsbergen |
op_source |
Betlem , P , Birchall , T , Lord , G , Oldfield , S , Nakken , L , Ogata , K & Senger , K 2024 , ' High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen ' , Earth System Science Data , vol. 16 , no. 2 , pp. 985-1006 . https://doi.org/10.5194/essd-16-985-2024 |
op_relation |
https://orbit.dtu.dk/en/publications/76209412-94e1-4e65-a532-31582e494c1e |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/essd-16-985-2024 |
container_title |
Earth System Science Data |
container_volume |
16 |
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2 |
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985 |
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