Orbital forcings of the Earth?s climate in wavelet domain
International audience We examine two paleoclimate proxy records ? the temperature differences from the Antarctic Vostok ice core and the composite ? 18 O record from three sites (V19-30, ODP 677, and ODP 846) ? in order to search for indications of orbital forcings. We demonstrate that the non-deci...
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ftinsu:oai:HAL:hal-00298116v1 2023-11-12T04:06:32+01:00 Orbital forcings of the Earth?s climate in wavelet domain Glushkov, A. V. Khokhlov, V. N. Loboda, N. S. Rusov, V. D. Vaschenko, V. N. Institute for Applied Mathematics Innovative Geosciences Research Centre Odessa National Polytechnic University Kiev National University 2005-09-23 https://hal.science/hal-00298116 https://hal.science/hal-00298116/document https://hal.science/hal-00298116/file/cpd-1-193-2005.pdf en eng HAL CCSD European Geosciences Union (EGU) hal-00298116 https://hal.science/hal-00298116 https://hal.science/hal-00298116/document https://hal.science/hal-00298116/file/cpd-1-193-2005.pdf info:eu-repo/semantics/OpenAccess ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.science/hal-00298116 Climate of the Past Discussions, 2005, 1 (2), pp.193-214 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2005 ftinsu 2023-10-25T16:28:16Z International audience We examine two paleoclimate proxy records ? the temperature differences from the Antarctic Vostok ice core and the composite ? 18 O record from three sites (V19-30, ODP 677, and ODP 846) ? in order to search for indications of orbital forcings. We demonstrate that the non-decimated wavelet transform is an appropriate tool for investigating temporarily changing spectral properties of records. Our results indicate that abrupt climate warmings with cyclicity of ~100 kiloyears during the last 400 kiloyears were caused by the combined unidirectional influences of three orbital parameters and the eccentricity can be considered as a modulator defining transitions from the Ice Ages to the periods of comparative warmings. Non-decimated wavelet transform avails discovering the possible part played in climate change by the eccentricity-forced variations. Up to approximately 1.7 million years BP, the influence of this variations of eccentricity appears in increasing for almost all local maxima of ? 18 O. Since the ~1.7 million years BP, minor and significant maxima alternated and this not affected as much the variations of ? 18 O. Article in Journal/Newspaper Antarc* Antarctic ice core Institut national des sciences de l'Univers: HAL-INSU Antarctic The Antarctic |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
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[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Glushkov, A. V. Khokhlov, V. N. Loboda, N. S. Rusov, V. D. Vaschenko, V. N. Orbital forcings of the Earth?s climate in wavelet domain |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We examine two paleoclimate proxy records ? the temperature differences from the Antarctic Vostok ice core and the composite ? 18 O record from three sites (V19-30, ODP 677, and ODP 846) ? in order to search for indications of orbital forcings. We demonstrate that the non-decimated wavelet transform is an appropriate tool for investigating temporarily changing spectral properties of records. Our results indicate that abrupt climate warmings with cyclicity of ~100 kiloyears during the last 400 kiloyears were caused by the combined unidirectional influences of three orbital parameters and the eccentricity can be considered as a modulator defining transitions from the Ice Ages to the periods of comparative warmings. Non-decimated wavelet transform avails discovering the possible part played in climate change by the eccentricity-forced variations. Up to approximately 1.7 million years BP, the influence of this variations of eccentricity appears in increasing for almost all local maxima of ? 18 O. Since the ~1.7 million years BP, minor and significant maxima alternated and this not affected as much the variations of ? 18 O. |
author2 |
Institute for Applied Mathematics Innovative Geosciences Research Centre Odessa National Polytechnic University Kiev National University |
format |
Article in Journal/Newspaper |
author |
Glushkov, A. V. Khokhlov, V. N. Loboda, N. S. Rusov, V. D. Vaschenko, V. N. |
author_facet |
Glushkov, A. V. Khokhlov, V. N. Loboda, N. S. Rusov, V. D. Vaschenko, V. N. |
author_sort |
Glushkov, A. V. |
title |
Orbital forcings of the Earth?s climate in wavelet domain |
title_short |
Orbital forcings of the Earth?s climate in wavelet domain |
title_full |
Orbital forcings of the Earth?s climate in wavelet domain |
title_fullStr |
Orbital forcings of the Earth?s climate in wavelet domain |
title_full_unstemmed |
Orbital forcings of the Earth?s climate in wavelet domain |
title_sort |
orbital forcings of the earth?s climate in wavelet domain |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00298116 https://hal.science/hal-00298116/document https://hal.science/hal-00298116/file/cpd-1-193-2005.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_source |
ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.science/hal-00298116 Climate of the Past Discussions, 2005, 1 (2), pp.193-214 |
op_relation |
hal-00298116 https://hal.science/hal-00298116 https://hal.science/hal-00298116/document https://hal.science/hal-00298116/file/cpd-1-193-2005.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782327624169684992 |