Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula)

The hummocky terrains of Deception Island (Antarctic Peninsula) are continuous surfaces with decimetre to metre wide and decimetre depth bumps located mainly in the lower section of sloping lapilli and scoria terrains. A detailed study site between Cerro Caliente and Crater Lake was selected for the...

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Bibliographic Details
Main Authors: Melo, R., Vieira, G., Caselli, A., Ramos, M.
Format: Journal/Newspaper
Language:unknown
Subjects:
GIS
Ice
Online Access:https://hdl.handle.net/20.500.12110/paper_0169555X_v155-156_n_p88_Melo
id ftunibueairesbd:todo:paper_0169555X_v155-156_n_p88_Melo
record_format openpolar
spelling ftunibueairesbd:todo:paper_0169555X_v155-156_n_p88_Melo 2023-10-29T02:32:14+01:00 Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula) Melo, R. Vieira, G. Caselli, A. Ramos, M. https://hdl.handle.net/20.500.12110/paper_0169555X_v155-156_n_p88_Melo unknown http://hdl.handle.net/20.500.12110/paper_0169555X_v155-156_n_p88_Melo info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Antarctic Peninsula Deception Island Hummocky terrains Information value method Spatial modelling formation mechanism geomorphological mapping GIS hummocky cross-stratification lithology numerical model performance assessment prediction quantitative analysis spatial data spatial distribution terrain Antarctica South Shetland Islands JOUR ftunibueairesbd https://doi.org/20.500.12110/paper_0169555X_v155-156_n_p88_Melo 2023-10-05T01:14:00Z The hummocky terrains of Deception Island (Antarctic Peninsula) are continuous surfaces with decimetre to metre wide and decimetre depth bumps located mainly in the lower section of sloping lapilli and scoria terrains. A detailed study site between Cerro Caliente and Crater Lake was selected for the detailed mapping of hummocky terrains and for modelling their spatial distribution according to controlling geographical factors. A model of the susceptibility of occurrence of the hummocky terrains was created using the information value method, together with five independent variables: elevation, slope, global summer radiation, total curvature and lithology. Success and prediction rate curves were used for model validation and the Area Under the Curve index was used to quantify the levels of performance and prediction. The results were of high quality with a success rate of 88% and a prediction rate of 78%. The classes of the independent variables with more relevance in the occurrence of hummocky terrains were: elevation between 20-30m and 60-70m; concave or rectilinear/flat areas; slopes between 8 and 12 o; tuff cones and maar deposits and global summer radiation between 1.8 and 2.0 TJm -2. The good quality of the modelling results supports its use for assessing the future potential for formation of new hummocky terrain areas, or even to estimate the spatial distribution of buried ice within the permafrost environment of Deception Island. © 2011 Elsevier B.V. Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Deception Island Ice permafrost South Shetland Islands Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
institution Open Polar
collection Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
op_collection_id ftunibueairesbd
language unknown
topic Antarctic Peninsula
Deception Island
Hummocky terrains
Information value method
Spatial modelling
formation mechanism
geomorphological mapping
GIS
hummocky cross-stratification
lithology
numerical model
performance assessment
prediction
quantitative analysis
spatial data
spatial distribution
terrain
Antarctica
South Shetland Islands
spellingShingle Antarctic Peninsula
Deception Island
Hummocky terrains
Information value method
Spatial modelling
formation mechanism
geomorphological mapping
GIS
hummocky cross-stratification
lithology
numerical model
performance assessment
prediction
quantitative analysis
spatial data
spatial distribution
terrain
Antarctica
South Shetland Islands
Melo, R.
Vieira, G.
Caselli, A.
Ramos, M.
Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula)
topic_facet Antarctic Peninsula
Deception Island
Hummocky terrains
Information value method
Spatial modelling
formation mechanism
geomorphological mapping
GIS
hummocky cross-stratification
lithology
numerical model
performance assessment
prediction
quantitative analysis
spatial data
spatial distribution
terrain
Antarctica
South Shetland Islands
description The hummocky terrains of Deception Island (Antarctic Peninsula) are continuous surfaces with decimetre to metre wide and decimetre depth bumps located mainly in the lower section of sloping lapilli and scoria terrains. A detailed study site between Cerro Caliente and Crater Lake was selected for the detailed mapping of hummocky terrains and for modelling their spatial distribution according to controlling geographical factors. A model of the susceptibility of occurrence of the hummocky terrains was created using the information value method, together with five independent variables: elevation, slope, global summer radiation, total curvature and lithology. Success and prediction rate curves were used for model validation and the Area Under the Curve index was used to quantify the levels of performance and prediction. The results were of high quality with a success rate of 88% and a prediction rate of 78%. The classes of the independent variables with more relevance in the occurrence of hummocky terrains were: elevation between 20-30m and 60-70m; concave or rectilinear/flat areas; slopes between 8 and 12 o; tuff cones and maar deposits and global summer radiation between 1.8 and 2.0 TJm -2. The good quality of the modelling results supports its use for assessing the future potential for formation of new hummocky terrain areas, or even to estimate the spatial distribution of buried ice within the permafrost environment of Deception Island. © 2011 Elsevier B.V.
format Journal/Newspaper
author Melo, R.
Vieira, G.
Caselli, A.
Ramos, M.
author_facet Melo, R.
Vieira, G.
Caselli, A.
Ramos, M.
author_sort Melo, R.
title Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula)
title_short Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula)
title_full Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula)
title_fullStr Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula)
title_full_unstemmed Susceptibility modelling of hummocky terrain distribution using the information value method (Deception Island, Antarctic Peninsula)
title_sort susceptibility modelling of hummocky terrain distribution using the information value method (deception island, antarctic peninsula)
url https://hdl.handle.net/20.500.12110/paper_0169555X_v155-156_n_p88_Melo
genre Antarc*
Antarctic
Antarctic Peninsula
Antarctica
Deception Island
Ice
permafrost
South Shetland Islands
genre_facet Antarc*
Antarctic
Antarctic Peninsula
Antarctica
Deception Island
Ice
permafrost
South Shetland Islands
op_relation http://hdl.handle.net/20.500.12110/paper_0169555X_v155-156_n_p88_Melo
op_rights info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
op_doi https://doi.org/20.500.12110/paper_0169555X_v155-156_n_p88_Melo
_version_ 1781053449281994752