Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico
The study of the past global climatic variations plays a very important role in the comprehension of present climate change and in the assessment of its future development. In particular, it is important to understand the natural variability of the climatic system and in which way human activity is...
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Università degli Studi di Milano-Bicocca
2009
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Online Access: | http://hdl.handle.net/10281/7573 |
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ftunivmilanobic:oai:boa.unimib.it:10281/7573 2024-02-11T09:57:15+01:00 Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico MAZZOLA, CLAUDIA MARIA GABRIELLA DELMONTE, BARBARA Mazzola, C MAGGI, VALTER 2009-12-23 http://hdl.handle.net/10281/7573 ita ita Università degli Studi di Milano-Bicocca country:Italy alleditors:DELMONTE, BARBARA http://hdl.handle.net/10281/7573 info:eu-repo/semantics/openAccess Paleoclimatologia Glaciologia Carote di Ghiaccio Particolato Atmosferico GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA info:eu-repo/semantics/doctoralThesis 2009 ftunivmilanobic 2024-01-16T23:16:28Z The study of the past global climatic variations plays a very important role in the comprehension of present climate change and in the assessment of its future development. In particular, it is important to understand the natural variability of the climatic system and in which way human activity is responsible for these variations. Paleoclimatic studies are based on information preserved in Natural Archives, sites around the world where it is possible to obtain indirect data, the so called proxy data, about climate-dependant parameters. Polar Ice Caps are one of the better natural archives both in terms of preservation and completeness. During the last two decades many drillings were performed in both Antarctic and Greenlandic ice caps, and in particular three ice cores from East Antarctic plateau have allowed to investigate a long period of past climate. These are Vostok ice core (Petit et al, 1999), Dome Fuji ice core (Goto-Azuma, 2006), and EPICA (European project for Ice Coring in Antarctica) Dome C ice core (EPICA community members, 2004). The last one covers 800,000 years BP (Before Present), and contains the oldest ice ever drilled. It is possible to collect many information from ice cores, and this work is focused on mineral dust concentration variability in the East Antarctic ice sheet, with the aim to create a very high resolution dust record. Atmospheric dust that has reached and deposited on Antarctic ice sheet from remote areas, are considered one of the best-preserved and detailed proxy data. Dust concentration, size distribution, isotopic signature and mineralogical studies give us information about climate variability and potential source areas (PSA), moreover it is possible to reconstruct paleoatmospheric circulation and back trajectories through models. In this way it is possible to contribute in increasing knowledge about coupled ocean-atmospheric system dynamics and about the important and not completely understood climate forcing role of the dust. In this work dust concentration was ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctica Antartide EPICA greenlandic ice core Ice Sheet Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Antarctic Alta East Antarctic Ice Sheet Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
Italian |
topic |
Paleoclimatologia Glaciologia Carote di Ghiaccio Particolato Atmosferico GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA |
spellingShingle |
Paleoclimatologia Glaciologia Carote di Ghiaccio Particolato Atmosferico GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA MAZZOLA, CLAUDIA MARIA GABRIELLA Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico |
topic_facet |
Paleoclimatologia Glaciologia Carote di Ghiaccio Particolato Atmosferico GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA |
description |
The study of the past global climatic variations plays a very important role in the comprehension of present climate change and in the assessment of its future development. In particular, it is important to understand the natural variability of the climatic system and in which way human activity is responsible for these variations. Paleoclimatic studies are based on information preserved in Natural Archives, sites around the world where it is possible to obtain indirect data, the so called proxy data, about climate-dependant parameters. Polar Ice Caps are one of the better natural archives both in terms of preservation and completeness. During the last two decades many drillings were performed in both Antarctic and Greenlandic ice caps, and in particular three ice cores from East Antarctic plateau have allowed to investigate a long period of past climate. These are Vostok ice core (Petit et al, 1999), Dome Fuji ice core (Goto-Azuma, 2006), and EPICA (European project for Ice Coring in Antarctica) Dome C ice core (EPICA community members, 2004). The last one covers 800,000 years BP (Before Present), and contains the oldest ice ever drilled. It is possible to collect many information from ice cores, and this work is focused on mineral dust concentration variability in the East Antarctic ice sheet, with the aim to create a very high resolution dust record. Atmospheric dust that has reached and deposited on Antarctic ice sheet from remote areas, are considered one of the best-preserved and detailed proxy data. Dust concentration, size distribution, isotopic signature and mineralogical studies give us information about climate variability and potential source areas (PSA), moreover it is possible to reconstruct paleoatmospheric circulation and back trajectories through models. In this way it is possible to contribute in increasing knowledge about coupled ocean-atmospheric system dynamics and about the important and not completely understood climate forcing role of the dust. In this work dust concentration was ... |
author2 |
DELMONTE, BARBARA Mazzola, C MAGGI, VALTER |
format |
Doctoral or Postdoctoral Thesis |
author |
MAZZOLA, CLAUDIA MARIA GABRIELLA |
author_facet |
MAZZOLA, CLAUDIA MARIA GABRIELLA |
author_sort |
MAZZOLA, CLAUDIA MARIA GABRIELLA |
title |
Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico |
title_short |
Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico |
title_full |
Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico |
title_fullStr |
Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico |
title_full_unstemmed |
Il pleistocene medio-superiore nella carota di ghiaccio di Talos Dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico |
title_sort |
il pleistocene medio-superiore nella carota di ghiaccio di talos dome (antartide orientale): riscostruzione ad alta risoluzione del record delle polveri fini atmosferiche e loro significato paleoclimatico |
publisher |
Università degli Studi di Milano-Bicocca |
publishDate |
2009 |
url |
http://hdl.handle.net/10281/7573 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic Alta East Antarctic Ice Sheet Dome Fuji Talos Dome |
geographic_facet |
Antarctic Alta East Antarctic Ice Sheet Dome Fuji Talos Dome |
genre |
Antarc* Antarctic Antarctica Antartide EPICA greenlandic ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Antartide EPICA greenlandic ice core Ice Sheet |
op_relation |
alleditors:DELMONTE, BARBARA http://hdl.handle.net/10281/7573 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1790609544536129536 |