Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging
Tephrochronology uses recognizable volcanic ash layers (from airborne pyroclastic deposits, or tephras) in geological strata to set unique time references for paleoenvironmental events across wide geographic areas. This involves the detection of tephra layers which sometimes are not evident to the n...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:92179 2023-07-02T03:30:42+02:00 Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging Aymerich, Ismael F. Oliva, Marc Giralt, Santiago Martín-Herrero, Julio 2016-02-02T22:37:52.000+01:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-xq-yp3k https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:92179 unknown doi:10.5061/dryad.v2st1/1 doi:10.1371/journal.pone.0146578 PMID:26815202 http://nbn-resolving.org/urn:nbn:nl:ui:13-xq-yp3k doi:10.5061/dryad.v2st1 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:92179 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2016 ftdans https://doi.org/10.5061/dryad.v2st1/110.1371/journal.pone.014657810.5061/dryad.v2st1 2023-06-13T13:21:04Z Tephrochronology uses recognizable volcanic ash layers (from airborne pyroclastic deposits, or tephras) in geological strata to set unique time references for paleoenvironmental events across wide geographic areas. This involves the detection of tephra layers which sometimes are not evident to the naked eye, including the so-called cryptotephras. Tests that are expensive, time-consuming, and/or destructive are often required. Destructive testing for tephra layers of cores from difficult regions, such as Antarctica, which are useful sources of other kinds of information beyond tephras, is always undesirable. Here we propose hyperspectral imaging of cores, Self-Organizing Map (SOM) clustering of the preprocessed spectral signatures, and spatial analysis of the classified images as a convenient, fast, non-destructive method for tephra detection. We test the method in five sediment cores from three Antarctic lakes, and show its potential for detection of tephras and cryptotephras. Other/Unknown Material Antarc* Antarctic Antarctica Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Antarctic |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Life sciences medicine and health care |
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Life sciences medicine and health care Aymerich, Ismael F. Oliva, Marc Giralt, Santiago Martín-Herrero, Julio Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging |
topic_facet |
Life sciences medicine and health care |
description |
Tephrochronology uses recognizable volcanic ash layers (from airborne pyroclastic deposits, or tephras) in geological strata to set unique time references for paleoenvironmental events across wide geographic areas. This involves the detection of tephra layers which sometimes are not evident to the naked eye, including the so-called cryptotephras. Tests that are expensive, time-consuming, and/or destructive are often required. Destructive testing for tephra layers of cores from difficult regions, such as Antarctica, which are useful sources of other kinds of information beyond tephras, is always undesirable. Here we propose hyperspectral imaging of cores, Self-Organizing Map (SOM) clustering of the preprocessed spectral signatures, and spatial analysis of the classified images as a convenient, fast, non-destructive method for tephra detection. We test the method in five sediment cores from three Antarctic lakes, and show its potential for detection of tephras and cryptotephras. |
author |
Aymerich, Ismael F. Oliva, Marc Giralt, Santiago Martín-Herrero, Julio |
author_facet |
Aymerich, Ismael F. Oliva, Marc Giralt, Santiago Martín-Herrero, Julio |
author_sort |
Aymerich, Ismael F. |
title |
Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging |
title_short |
Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging |
title_full |
Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging |
title_fullStr |
Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging |
title_full_unstemmed |
Data from: Detection of tephra layers in Antarctic sediment cores with hyperspectral imaging |
title_sort |
data from: detection of tephra layers in antarctic sediment cores with hyperspectral imaging |
publishDate |
2016 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-xq-yp3k https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:92179 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
doi:10.5061/dryad.v2st1/1 doi:10.1371/journal.pone.0146578 PMID:26815202 http://nbn-resolving.org/urn:nbn:nl:ui:13-xq-yp3k doi:10.5061/dryad.v2st1 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:92179 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.v2st1/110.1371/journal.pone.014657810.5061/dryad.v2st1 |
_version_ |
1770274972307030016 |