Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory
The geomagnetic field shows aperiodic reversals and excursions separated by stable polarity periods. Although the exact mechanisms responsible of reversals are still debated, several models of different complexity have been proposed. Here we use, for the first time, a different and novel approach ba...
Published in: | Geophysical Research Letters |
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Online Access: | http://hdl.handle.net/2122/16607 https://doi.org/10.1029/2023GL105646 |
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ftingv:oai:www.earth-prints.org:2122/16607 2024-01-21T10:10:35+01:00 Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory Alberti, Tommaso Florindo, Fabio De Michelis, Paola Consolini, Giuseppe Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione AC, Roma, Italia 2023 http://hdl.handle.net/2122/16607 https://doi.org/10.1029/2023GL105646 en eng Wiley-Agu Geophysical Research Letters /50 (2023) 0094-8276 http://hdl.handle.net/2122/16607 doi:10.1029/2023GL105646 open article 2023 ftingv https://doi.org/10.1029/2023GL105646 2023-12-26T23:26:25Z The geomagnetic field shows aperiodic reversals and excursions separated by stable polarity periods. Although the exact mechanisms responsible of reversals are still debated, several models of different complexity have been proposed. Here we use, for the first time, a different and novel approach based on the theory of tipping points to detect and characterize geomagnetic reversals occurred during the period 25–36 millions years ago by using a high-resolution magnetostratigraphic study conducted on a sedimentary section located on Maud Rise in the Southern Ocean. We detect a critical threshold for an early warning indicator of the occurrence of a polarity reversal below which a polarity reversal starts. Through the proper use of this early warning indicator we build up a simple non-autonomous stochastic model to describe the main features of polarity reversals. This approach could be helpful for building up a novel framework for paleomagnetic studies. Published e2023GL105646 OSA1: Variazioni del campo magnetico terrestre, imaging crostale e sicurezza del territorio JCR Journal Article in Journal/Newspaper Southern Ocean Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Southern Ocean Maud Rise ENVELOPE(3.000,3.000,-66.000,-66.000) Geophysical Research Letters 50 20 |
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Open Polar |
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Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
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ftingv |
language |
English |
description |
The geomagnetic field shows aperiodic reversals and excursions separated by stable polarity periods. Although the exact mechanisms responsible of reversals are still debated, several models of different complexity have been proposed. Here we use, for the first time, a different and novel approach based on the theory of tipping points to detect and characterize geomagnetic reversals occurred during the period 25–36 millions years ago by using a high-resolution magnetostratigraphic study conducted on a sedimentary section located on Maud Rise in the Southern Ocean. We detect a critical threshold for an early warning indicator of the occurrence of a polarity reversal below which a polarity reversal starts. Through the proper use of this early warning indicator we build up a simple non-autonomous stochastic model to describe the main features of polarity reversals. This approach could be helpful for building up a novel framework for paleomagnetic studies. Published e2023GL105646 OSA1: Variazioni del campo magnetico terrestre, imaging crostale e sicurezza del territorio JCR Journal |
author2 |
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione AC, Roma, Italia |
format |
Article in Journal/Newspaper |
author |
Alberti, Tommaso Florindo, Fabio De Michelis, Paola Consolini, Giuseppe |
spellingShingle |
Alberti, Tommaso Florindo, Fabio De Michelis, Paola Consolini, Giuseppe Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory |
author_facet |
Alberti, Tommaso Florindo, Fabio De Michelis, Paola Consolini, Giuseppe |
author_sort |
Alberti, Tommaso |
title |
Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory |
title_short |
Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory |
title_full |
Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory |
title_fullStr |
Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory |
title_full_unstemmed |
Unveiling Geomagnetic Reversals: Insights From Tipping Points Theory |
title_sort |
unveiling geomagnetic reversals: insights from tipping points theory |
publisher |
Wiley-Agu |
publishDate |
2023 |
url |
http://hdl.handle.net/2122/16607 https://doi.org/10.1029/2023GL105646 |
long_lat |
ENVELOPE(3.000,3.000,-66.000,-66.000) |
geographic |
Southern Ocean Maud Rise |
geographic_facet |
Southern Ocean Maud Rise |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Geophysical Research Letters /50 (2023) 0094-8276 http://hdl.handle.net/2122/16607 doi:10.1029/2023GL105646 |
op_rights |
open |
op_doi |
https://doi.org/10.1029/2023GL105646 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
20 |
_version_ |
1788701984596951040 |