Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal
We analysed the newest gravity field models (given in the form of spherical harmonic expansion to degree and order 2190) EIGEN 6C4 and RET 14, which consist basically from the gravity data from EIGEN 6C4 plus the bedrock topography from the Bedmap 2 model, describing the topography of the ground und...
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ftczacademyscien:oai:asep.lib.cas.cz:CavUnEpca/0497346 2024-09-15T17:46:17+00:00 Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal Klokočník, J. (Jaroslav) Kostelecký, J. Bezděk, A. (Aleš) Pešek, I. 2017 https://doi.org/10.4401/ag-7427 http://hdl.handle.net/11104/0289907 eng eng doi:10.4401/ag-7427 urn:pissn: 1593-5213 urn:eissn: 2037-416x http://hdl.handle.net/11104/0289907 east Antarctica lake Vostok framework info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 ftczacademyscien https://doi.org/10.4401/ag-7427 2024-08-19T05:33:01Z We analysed the newest gravity field models (given in the form of spherical harmonic expansion to degree and order 2190) EIGEN 6C4 and RET 14, which consist basically from the gravity data from EIGEN 6C4 plus the bedrock topography from the Bedmap 2 model, describing the topography of the ground under the ice of Antarctica. From these models we computed the gravity anomalies, the Marussi tensor of the second derivatives of the disturbing potential, the gravity invariants and their specific ratio, the strike angle and the virtual deformations. We applied these results for a selected part of Antarctica, not too far from the Lake Vostok we discovered at least two objects that might be subglacial volcanoes. We present all predictors and arguments we have available to support this hypothesis, but we are well aware that the last word waits for other specialists. We provide geographic coordinates on the ice surface where to dig for the possible volcanoes. Article in Journal/Newspaper Antarc* Antarctica East Antarctica The Czech Academy of Sciences: Publication Activity (ASEP) Annals of Geophysics 60 6 |
institution |
Open Polar |
collection |
The Czech Academy of Sciences: Publication Activity (ASEP) |
op_collection_id |
ftczacademyscien |
language |
English |
topic |
east Antarctica lake Vostok framework |
spellingShingle |
east Antarctica lake Vostok framework Klokočník, J. (Jaroslav) Kostelecký, J. Bezděk, A. (Aleš) Pešek, I. Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal |
topic_facet |
east Antarctica lake Vostok framework |
description |
We analysed the newest gravity field models (given in the form of spherical harmonic expansion to degree and order 2190) EIGEN 6C4 and RET 14, which consist basically from the gravity data from EIGEN 6C4 plus the bedrock topography from the Bedmap 2 model, describing the topography of the ground under the ice of Antarctica. From these models we computed the gravity anomalies, the Marussi tensor of the second derivatives of the disturbing potential, the gravity invariants and their specific ratio, the strike angle and the virtual deformations. We applied these results for a selected part of Antarctica, not too far from the Lake Vostok we discovered at least two objects that might be subglacial volcanoes. We present all predictors and arguments we have available to support this hypothesis, but we are well aware that the last word waits for other specialists. We provide geographic coordinates on the ice surface where to dig for the possible volcanoes. |
format |
Article in Journal/Newspaper |
author |
Klokočník, J. (Jaroslav) Kostelecký, J. Bezděk, A. (Aleš) Pešek, I. |
author_facet |
Klokočník, J. (Jaroslav) Kostelecký, J. Bezděk, A. (Aleš) Pešek, I. |
author_sort |
Klokočník, J. (Jaroslav) |
title |
Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal |
title_short |
Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal |
title_full |
Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal |
title_fullStr |
Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal |
title_full_unstemmed |
Candidates for volcanoes under the ice of Antarctica detected by their gravito-topographic signal |
title_sort |
candidates for volcanoes under the ice of antarctica detected by their gravito-topographic signal |
publishDate |
2017 |
url |
https://doi.org/10.4401/ag-7427 http://hdl.handle.net/11104/0289907 |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_relation |
doi:10.4401/ag-7427 urn:pissn: 1593-5213 urn:eissn: 2037-416x http://hdl.handle.net/11104/0289907 |
op_doi |
https://doi.org/10.4401/ag-7427 |
container_title |
Annals of Geophysics |
container_volume |
60 |
container_issue |
6 |
_version_ |
1810494294950150144 |