Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province
Quantitative morphometric analyses were carried out for each mound following the workflows presented by Purkis et al. (2007) The coral mound base was defined following the methodological approach of Correa et al. (2012) using the dip angle map, generated from the digital elevation model (DEM), to ex...
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Format: | Dataset |
Language: | English |
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PANGAEA
2022
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.944627 https://doi.org/10.1594/PANGAEA.944627 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.944627 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
3D relief of the coral mound 3D relief of the coral mound/coral mound footprint polygon Bounding area Circular variance cold-water coral Compactness Convexity coral mounds Depth bottom/max difference median mode top/min water Dimension fractal Direction Direction of principal axis Distance from nearest polygon Elevation standard deviation Fractal Span GeoB20502-1 GeoB20509-1 GeoB20526-1 GeoB20532-1 GeoB20546-1 GeoB20558-1 GeoB20562-1 GeoB20570-1 GeoB20580-1 Grab Height of mound Identification LATITUDE Length of axis ortoghonal to PAX Length of principal axis LONGITUDE Lophelia pertusa M122 M122_004-1 M122_021-1 M122_027-1 |
spellingShingle |
3D relief of the coral mound 3D relief of the coral mound/coral mound footprint polygon Bounding area Circular variance cold-water coral Compactness Convexity coral mounds Depth bottom/max difference median mode top/min water Dimension fractal Direction Direction of principal axis Distance from nearest polygon Elevation standard deviation Fractal Span GeoB20502-1 GeoB20509-1 GeoB20526-1 GeoB20532-1 GeoB20546-1 GeoB20558-1 GeoB20562-1 GeoB20570-1 GeoB20580-1 Grab Height of mound Identification LATITUDE Length of axis ortoghonal to PAX Length of principal axis LONGITUDE Lophelia pertusa M122 M122_004-1 M122_021-1 M122_027-1 Tamborrino, Leonardo Purkis, Sam Hebbeln, Dierk Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province |
topic_facet |
3D relief of the coral mound 3D relief of the coral mound/coral mound footprint polygon Bounding area Circular variance cold-water coral Compactness Convexity coral mounds Depth bottom/max difference median mode top/min water Dimension fractal Direction Direction of principal axis Distance from nearest polygon Elevation standard deviation Fractal Span GeoB20502-1 GeoB20509-1 GeoB20526-1 GeoB20532-1 GeoB20546-1 GeoB20558-1 GeoB20562-1 GeoB20570-1 GeoB20580-1 Grab Height of mound Identification LATITUDE Length of axis ortoghonal to PAX Length of principal axis LONGITUDE Lophelia pertusa M122 M122_004-1 M122_021-1 M122_027-1 |
description |
Quantitative morphometric analyses were carried out for each mound following the workflows presented by Purkis et al. (2007) The coral mound base was defined following the methodological approach of Correa et al. (2012) using the dip angle map, generated from the digital elevation model (DEM), to extract closed polygons that follow the 3°-contour line. This 3°-cutoff has been qualitatively validated with a comparison between the DEM and the dip angle (Fig. 2). Small-scaled polygons within mound perimeters and resulting from bathymetric artifacts were filtered out. Manual editing was applied to split simple merged mound structures (e.g. twin-peak mounds) based on higher cut-off slope values (4-5°). Furthermore, polygons describing the mound footprint have been corrected to remove unrealistic shapes especially common for the CBM. The DEM was subsequently re-gridded to generate hypothetical bathymetric maps without mounds, for which the vertical relief beneath each removed mound was interpolated from the mound perimeters. The newly interpolated surfaces were then subtracted from the original DEMs to evaluate the volume and heights of the coral mounds. Only features with a footprint area greater than 900 squared meters (corresponding to a two-dimensional array of 3 × 3 DEM grid cells) and with a height of >2 m above the surrounding seafloor (4 × 0.5 m of vertical precision) were considered as coral mounds and quantitatively analyzed. |
format |
Dataset |
author |
Tamborrino, Leonardo Purkis, Sam Hebbeln, Dierk |
author_facet |
Tamborrino, Leonardo Purkis, Sam Hebbeln, Dierk |
author_sort |
Tamborrino, Leonardo |
title |
Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province |
title_short |
Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province |
title_full |
Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province |
title_fullStr |
Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province |
title_full_unstemmed |
Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province |
title_sort |
morphometric parameters of the squid mounds (sqm), namibian coral mound province |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.944627 https://doi.org/10.1594/PANGAEA.944627 |
op_coverage |
MEDIAN LATITUDE: -20.510175 * MEDIAN LONGITUDE: 12.652721 * SOUTH-BOUND LATITUDE: -20.598449 * WEST-BOUND LONGITUDE: 12.613391 * NORTH-BOUND LATITUDE: -20.368417 * EAST-BOUND LONGITUDE: 12.721770 * DATE/TIME START: 2015-12-30T23:46:00 * DATE/TIME END: 2016-01-11T05:45:00 * MINIMUM DEPTH, water: -267 m * MAXIMUM DEPTH, water: -197 m |
long_lat |
ENVELOPE(12.613391,12.721770,-20.368417,-20.598449) |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_relation |
Tamborrino, Leonardo; Titschack, Jürgen; Wienberg, Claudia; Purkis, Sam; Eberli, Gregor P; Hebbeln, Dierk (2022): Spatial distribution and morphometry of the Namibian coral mounds controlled by the hydrodynamic regime and outer-shelf topography. Frontiers in Marine Science, 9, 877616, https://doi.org/10.3389/fmars.2022.877616 Hebbeln, Dierk; Bender, Maren; Eichstädter, Rene; Gori, Andrea; João, Francisco; Moçambique, Irene; Orejas, Covadonga; Titschack, Jürgen; Wefing, Anne-Marie; Wienberg, Claudia; Wintersteller, Paul (2023): Multibeam bathymetry raw data (Kongsberg EM710 entire dataset) of RV METEOR during cruise M122 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945015 Correa, Thiago B S; Grasmueck, Mark; Eberli, Gregor P; Reed, John K; Verwer, Klaas; Purkis, Sam (2012): Variability of cold-water coral mounds in a high sediment input and tidal current regime, Straits of Florida. Sedimentology, 59(4), 1278-1304, https://doi.org/10.1111/j.1365-3091.2011.01306.x Peura, M; Iivarinen, J (1997): Efficiency of simple shape descriptors. In: Advances in visual form analysis (Eds A. C., L.P. Cordella and G. Sanniti di Baja), World Scientific, Singapore, 443-451 Purkis, Samuel J; Kohler, Kevin E; Riegl, Bernhard M; Rohmann, Steven O (2007): The Statistics of Natural Shapes in Modern Coral Reef Landscapes. The Journal of Geology, 115(5), 493-508, https://doi.org/10.1086/519774 https://doi.pangaea.de/10.1594/PANGAEA.944627 https://doi.org/10.1594/PANGAEA.944627 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.94462710.3389/fmars.2022.87761610.1594/PANGAEA.94501510.1111/j.1365-3091.2011.01306.x10.1086/519774 |
_version_ |
1810456209986158592 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.944627 2024-09-15T18:18:04+00:00 Morphometric parameters of the Squid Mounds (SQM), Namibian coral mound province Tamborrino, Leonardo Purkis, Sam Hebbeln, Dierk MEDIAN LATITUDE: -20.510175 * MEDIAN LONGITUDE: 12.652721 * SOUTH-BOUND LATITUDE: -20.598449 * WEST-BOUND LONGITUDE: 12.613391 * NORTH-BOUND LATITUDE: -20.368417 * EAST-BOUND LONGITUDE: 12.721770 * DATE/TIME START: 2015-12-30T23:46:00 * DATE/TIME END: 2016-01-11T05:45:00 * MINIMUM DEPTH, water: -267 m * MAXIMUM DEPTH, water: -197 m 2022 text/tab-separated-values, 26999 data points https://doi.pangaea.de/10.1594/PANGAEA.944627 https://doi.org/10.1594/PANGAEA.944627 en eng PANGAEA Tamborrino, Leonardo; Titschack, Jürgen; Wienberg, Claudia; Purkis, Sam; Eberli, Gregor P; Hebbeln, Dierk (2022): Spatial distribution and morphometry of the Namibian coral mounds controlled by the hydrodynamic regime and outer-shelf topography. Frontiers in Marine Science, 9, 877616, https://doi.org/10.3389/fmars.2022.877616 Hebbeln, Dierk; Bender, Maren; Eichstädter, Rene; Gori, Andrea; João, Francisco; Moçambique, Irene; Orejas, Covadonga; Titschack, Jürgen; Wefing, Anne-Marie; Wienberg, Claudia; Wintersteller, Paul (2023): Multibeam bathymetry raw data (Kongsberg EM710 entire dataset) of RV METEOR during cruise M122 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945015 Correa, Thiago B S; Grasmueck, Mark; Eberli, Gregor P; Reed, John K; Verwer, Klaas; Purkis, Sam (2012): Variability of cold-water coral mounds in a high sediment input and tidal current regime, Straits of Florida. Sedimentology, 59(4), 1278-1304, https://doi.org/10.1111/j.1365-3091.2011.01306.x Peura, M; Iivarinen, J (1997): Efficiency of simple shape descriptors. In: Advances in visual form analysis (Eds A. C., L.P. Cordella and G. Sanniti di Baja), World Scientific, Singapore, 443-451 Purkis, Samuel J; Kohler, Kevin E; Riegl, Bernhard M; Rohmann, Steven O (2007): The Statistics of Natural Shapes in Modern Coral Reef Landscapes. The Journal of Geology, 115(5), 493-508, https://doi.org/10.1086/519774 https://doi.pangaea.de/10.1594/PANGAEA.944627 https://doi.org/10.1594/PANGAEA.944627 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess 3D relief of the coral mound 3D relief of the coral mound/coral mound footprint polygon Bounding area Circular variance cold-water coral Compactness Convexity coral mounds Depth bottom/max difference median mode top/min water Dimension fractal Direction Direction of principal axis Distance from nearest polygon Elevation standard deviation Fractal Span GeoB20502-1 GeoB20509-1 GeoB20526-1 GeoB20532-1 GeoB20546-1 GeoB20558-1 GeoB20562-1 GeoB20570-1 GeoB20580-1 Grab Height of mound Identification LATITUDE Length of axis ortoghonal to PAX Length of principal axis LONGITUDE Lophelia pertusa M122 M122_004-1 M122_021-1 M122_027-1 dataset 2022 ftpangaea https://doi.org/10.1594/PANGAEA.94462710.3389/fmars.2022.87761610.1594/PANGAEA.94501510.1111/j.1365-3091.2011.01306.x10.1086/519774 2024-07-24T02:31:34Z Quantitative morphometric analyses were carried out for each mound following the workflows presented by Purkis et al. (2007) The coral mound base was defined following the methodological approach of Correa et al. (2012) using the dip angle map, generated from the digital elevation model (DEM), to extract closed polygons that follow the 3°-contour line. This 3°-cutoff has been qualitatively validated with a comparison between the DEM and the dip angle (Fig. 2). Small-scaled polygons within mound perimeters and resulting from bathymetric artifacts were filtered out. Manual editing was applied to split simple merged mound structures (e.g. twin-peak mounds) based on higher cut-off slope values (4-5°). Furthermore, polygons describing the mound footprint have been corrected to remove unrealistic shapes especially common for the CBM. The DEM was subsequently re-gridded to generate hypothetical bathymetric maps without mounds, for which the vertical relief beneath each removed mound was interpolated from the mound perimeters. The newly interpolated surfaces were then subtracted from the original DEMs to evaluate the volume and heights of the coral mounds. Only features with a footprint area greater than 900 squared meters (corresponding to a two-dimensional array of 3 × 3 DEM grid cells) and with a height of >2 m above the surrounding seafloor (4 × 0.5 m of vertical precision) were considered as coral mounds and quantitatively analyzed. Dataset Lophelia pertusa PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(12.613391,12.721770,-20.368417,-20.598449) |