Orbital signatures and long-term vegetation patterns in the Mediterranean
An attempt is made to explore the relation between vegetation phases and orbital configurations by comparing long pollen sequences from the Mediterranean region and astronomical curves on the basis of their independent chronologies. Three recurring patterns emerge from this comparison: (i) all inter...
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2000
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ftucl:oai:eprints.ucl.ac.uk.OAI2:125834 2023-05-15T17:33:54+02:00 Orbital signatures and long-term vegetation patterns in the Mediterranean Magri, D Tzedakis, PC 2000 http://discovery.ucl.ac.uk/125834/ unknown PERGAMON-ELSEVIER SCIENCE LTD QUATERN INT , 73-4 69 - 78. (2000) LAST GLACIAL PERIOD VALLE-DI-CASTIGLIONE NORTH-ATLANTIC POLLEN RECORD CLIMATE RECORDS ICE AGES FLUCTUATIONS SCALE VARIABILITY DISCHARGES Article 2000 ftucl 2017-02-09T23:11:16Z An attempt is made to explore the relation between vegetation phases and orbital configurations by comparing long pollen sequences from the Mediterranean region and astronomical curves on the basis of their independent chronologies. Three recurring patterns emerge from this comparison: (i) all intervals with perihelion passage occurring during northern winter were associated with significant contractions of tree populations; (ii) all temperate-stage expansions of certain Mediterranean vegetation elements occurred when perihelion passage was in summer; and (iii) temperate-stage forests reached maximum extent at times of autumn perihelion. Of these patterns, the first corresponds to extreme dry/cold episodes culminating at times of March perihelion, and the second, to maximum summer temperature and evaporation regimes following June perihelion. The third, associated with the occurrence of September perihelion, appears to be more diffuse both in time and space, possibly reflecting local variations in hydrological regimes. The consistency of at least the first two cases provides some support for the notion that certain recurring vegetation patterns appear to be a result of climate changes linked to specific orbital signatures. This could eventually lead to the development of improved terrestrial chronologies through astronomical tuning. (C) 2000 Elsevier Science Ltd and INQUA. All rights reserved. Article in Journal/Newspaper North Atlantic University College London: UCL Discovery |
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Open Polar |
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University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
LAST GLACIAL PERIOD VALLE-DI-CASTIGLIONE NORTH-ATLANTIC POLLEN RECORD CLIMATE RECORDS ICE AGES FLUCTUATIONS SCALE VARIABILITY DISCHARGES |
spellingShingle |
LAST GLACIAL PERIOD VALLE-DI-CASTIGLIONE NORTH-ATLANTIC POLLEN RECORD CLIMATE RECORDS ICE AGES FLUCTUATIONS SCALE VARIABILITY DISCHARGES Magri, D Tzedakis, PC Orbital signatures and long-term vegetation patterns in the Mediterranean |
topic_facet |
LAST GLACIAL PERIOD VALLE-DI-CASTIGLIONE NORTH-ATLANTIC POLLEN RECORD CLIMATE RECORDS ICE AGES FLUCTUATIONS SCALE VARIABILITY DISCHARGES |
description |
An attempt is made to explore the relation between vegetation phases and orbital configurations by comparing long pollen sequences from the Mediterranean region and astronomical curves on the basis of their independent chronologies. Three recurring patterns emerge from this comparison: (i) all intervals with perihelion passage occurring during northern winter were associated with significant contractions of tree populations; (ii) all temperate-stage expansions of certain Mediterranean vegetation elements occurred when perihelion passage was in summer; and (iii) temperate-stage forests reached maximum extent at times of autumn perihelion. Of these patterns, the first corresponds to extreme dry/cold episodes culminating at times of March perihelion, and the second, to maximum summer temperature and evaporation regimes following June perihelion. The third, associated with the occurrence of September perihelion, appears to be more diffuse both in time and space, possibly reflecting local variations in hydrological regimes. The consistency of at least the first two cases provides some support for the notion that certain recurring vegetation patterns appear to be a result of climate changes linked to specific orbital signatures. This could eventually lead to the development of improved terrestrial chronologies through astronomical tuning. (C) 2000 Elsevier Science Ltd and INQUA. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Magri, D Tzedakis, PC |
author_facet |
Magri, D Tzedakis, PC |
author_sort |
Magri, D |
title |
Orbital signatures and long-term vegetation patterns in the Mediterranean |
title_short |
Orbital signatures and long-term vegetation patterns in the Mediterranean |
title_full |
Orbital signatures and long-term vegetation patterns in the Mediterranean |
title_fullStr |
Orbital signatures and long-term vegetation patterns in the Mediterranean |
title_full_unstemmed |
Orbital signatures and long-term vegetation patterns in the Mediterranean |
title_sort |
orbital signatures and long-term vegetation patterns in the mediterranean |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2000 |
url |
http://discovery.ucl.ac.uk/125834/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
QUATERN INT , 73-4 69 - 78. (2000) |
_version_ |
1766132555510185984 |