On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal”
Many undiscovered volcanoes may be hidden under the thick layers of the ice of Antarctica. Hypothetic volcanoes were sought by means of the best present-day gravitational data (gravity field model EIGEN 6C4) and bedrock topography data (Bedmap2). A new previously unused method was tested. The analog...
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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ftdoajarticles:oai:doaj.org/article:87911ae1016144328603d96a1a5ecdde 2023-05-15T13:34:06+02:00 On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal” Jaroslav Klokočník Jan Kostelecký Ivan Pešek Aleš Bezděk 2016-11-01T00:00:00Z https://doi.org/10.4401/ag-7102 https://doaj.org/article/87911ae1016144328603d96a1a5ecdde EN eng Istituto Nazionale di Geofisica e Vulcanologia (INGV) http://www.annalsofgeophysics.eu/index.php/annals/article/view/7102 https://doaj.org/toc/1593-5213 https://doaj.org/toc/2037-416X 1593-5213 2037-416X doi:10.4401/ag-7102 https://doaj.org/article/87911ae1016144328603d96a1a5ecdde Annals of Geophysics, Vol 59, Iss 5 (2016) Gravity field model EIGEN 6C4 Functions of disturbing potential Volcanoes Antarctica Bedmap2 RET 14 Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 article 2016 ftdoajarticles https://doi.org/10.4401/ag-7102 2022-12-31T00:01:03Z Many undiscovered volcanoes may be hidden under the thick layers of the ice of Antarctica. Hypothetic volcanoes were sought by means of the best present-day gravitational data (gravity field model EIGEN 6C4) and bedrock topography data (Bedmap2). A new previously unused method was tested. The analogy with the “gravitational signal” typical for volcanoes and other structures in other parts of the Earth is used. Various functions (not only ordinary gravity anomalies) of the disturbing geopotential were employed: Marussi tensor of the second derivatives, geopotential invariants, the strike angle and the virtual deformations. We attempted to discover if the best present-day gravitational and topographic data are of sufficient precision and resolution and how fast is the attenuation of the “gravitational signal” of a volcano with increasing depth under the ice. It is shown that there is no principal obstacle to detect volcanoes by our method. However, it appeared very quickly that our present-day attempts to discover such volcanoes could hardly be successful, mainly due to a low resolution of the existing gravity data and also due to a low resolution of the best bedrock topography of Antarctica currently available. Nevertheless, some examples of hypothetical volcanoes under the ice are given, but they are uncertain. However, the method, the main goal of this feasibility study, is ready and working. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Annals of Geophysics 59 5 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Gravity field model EIGEN 6C4 Functions of disturbing potential Volcanoes Antarctica Bedmap2 RET 14 Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Gravity field model EIGEN 6C4 Functions of disturbing potential Volcanoes Antarctica Bedmap2 RET 14 Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 Jaroslav Klokočník Jan Kostelecký Ivan Pešek Aleš Bezděk On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal” |
topic_facet |
Gravity field model EIGEN 6C4 Functions of disturbing potential Volcanoes Antarctica Bedmap2 RET 14 Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
description |
Many undiscovered volcanoes may be hidden under the thick layers of the ice of Antarctica. Hypothetic volcanoes were sought by means of the best present-day gravitational data (gravity field model EIGEN 6C4) and bedrock topography data (Bedmap2). A new previously unused method was tested. The analogy with the “gravitational signal” typical for volcanoes and other structures in other parts of the Earth is used. Various functions (not only ordinary gravity anomalies) of the disturbing geopotential were employed: Marussi tensor of the second derivatives, geopotential invariants, the strike angle and the virtual deformations. We attempted to discover if the best present-day gravitational and topographic data are of sufficient precision and resolution and how fast is the attenuation of the “gravitational signal” of a volcano with increasing depth under the ice. It is shown that there is no principal obstacle to detect volcanoes by our method. However, it appeared very quickly that our present-day attempts to discover such volcanoes could hardly be successful, mainly due to a low resolution of the existing gravity data and also due to a low resolution of the best bedrock topography of Antarctica currently available. Nevertheless, some examples of hypothetical volcanoes under the ice are given, but they are uncertain. However, the method, the main goal of this feasibility study, is ready and working. |
format |
Article in Journal/Newspaper |
author |
Jaroslav Klokočník Jan Kostelecký Ivan Pešek Aleš Bezděk |
author_facet |
Jaroslav Klokočník Jan Kostelecký Ivan Pešek Aleš Bezděk |
author_sort |
Jaroslav Klokočník |
title |
On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal” |
title_short |
On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal” |
title_full |
On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal” |
title_fullStr |
On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal” |
title_full_unstemmed |
On feasibility to detect volcanoes hidden under the ice of Antarctica via their “gravitational signal” |
title_sort |
on feasibility to detect volcanoes hidden under the ice of antarctica via their “gravitational signal” |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
publishDate |
2016 |
url |
https://doi.org/10.4401/ag-7102 https://doaj.org/article/87911ae1016144328603d96a1a5ecdde |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Annals of Geophysics, Vol 59, Iss 5 (2016) |
op_relation |
http://www.annalsofgeophysics.eu/index.php/annals/article/view/7102 https://doaj.org/toc/1593-5213 https://doaj.org/toc/2037-416X 1593-5213 2037-416X doi:10.4401/ag-7102 https://doaj.org/article/87911ae1016144328603d96a1a5ecdde |
op_doi |
https://doi.org/10.4401/ag-7102 |
container_title |
Annals of Geophysics |
container_volume |
59 |
container_issue |
5 |
_version_ |
1766048931669606400 |