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Relation between low latitude insolation and δ 18 O change of atmospheric oxygen for the last 200 kyrs, as revealed by Mediterranean sapropels
The isotopic ratio of atmospheric O 2 , δ 18 O atm , deduced from ice cores, displays large fluctuations during climatic cycles. These are caused principally by changes in the oxygen isotopic ratio of sea‐water, δ 18 O sw , and changes in the biosphere and in the hydrological cycle. As both δ 18 O a...
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| Published in: | Geophysical research letters 1997-05, Vol.24 (10), p.1235-1238 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c1081-b87f946645f180099d663284790923bc05f258cef14ed7ed6273ee49c5312e343 |
| container_end_page | 1238 |
| container_issue | 10 |
| container_start_page | 1235 |
| container_title | Geophysical research letters |
| container_volume | 24 |
| creator | Mélières, M.‐A. Rossignol‐Strick, M. Malaizé, B. |
| description | The isotopic ratio of atmospheric O
2
, δ
18
O
atm
, deduced from ice cores, displays large fluctuations during climatic cycles. These are caused principally by changes in the oxygen isotopic ratio of sea‐water, δ
18
O
sw
, and changes in the biosphere and in the hydrological cycle. As both δ
18
O
atm
and δ
18
O
sw
coincide closely over the last 135 kyr BP, it is generally believed that δ
18
O
atm
is driven mainly by δ
18
O
sw
. Here we focus on the major discrepancy, which arises between those two signals during the prior isotopic glacial stage 6, around 175 kyr BP, discrepancy which calls into question the role of changes in δ
18
O
sw
as the driving mechanism for δ
18
O
atm
. We present arguments, based on the occurrence and pollen content of Mediterranean sapropels, for another source of the δ
18
O
atm
change: insolation at low latitudes via hydrosphere/biosphere activity. |
| doi_str_mv | 10.1029/97GL01025 |
| format | article |
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2
, δ
18
O
atm
, deduced from ice cores, displays large fluctuations during climatic cycles. These are caused principally by changes in the oxygen isotopic ratio of sea‐water, δ
18
O
sw
, and changes in the biosphere and in the hydrological cycle. As both δ
18
O
atm
and δ
18
O
sw
coincide closely over the last 135 kyr BP, it is generally believed that δ
18
O
atm
is driven mainly by δ
18
O
sw
. Here we focus on the major discrepancy, which arises between those two signals during the prior isotopic glacial stage 6, around 175 kyr BP, discrepancy which calls into question the role of changes in δ
18
O
sw
as the driving mechanism for δ
18
O
atm
. We present arguments, based on the occurrence and pollen content of Mediterranean sapropels, for another source of the δ
18
O
atm
change: insolation at low latitudes via hydrosphere/biosphere activity.</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/97GL01025</identifier><language>eng</language><publisher>American Geophysical Union</publisher><subject>Continental interfaces, environment ; Ocean, Atmosphere ; Sciences of the Universe</subject><ispartof>Geophysical research letters, 1997-05, Vol.24 (10), p.1235-1238</ispartof><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1081-b87f946645f180099d663284790923bc05f258cef14ed7ed6273ee49c5312e343</citedby><cites>FETCH-LOGICAL-c1081-b87f946645f180099d663284790923bc05f258cef14ed7ed6273ee49c5312e343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://hal.science/hal-03335010$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Mélières, M.‐A.</creatorcontrib><creatorcontrib>Rossignol‐Strick, M.</creatorcontrib><creatorcontrib>Malaizé, B.</creatorcontrib><title>Relation between low latitude insolation and δ 18 O change of atmospheric oxygen for the last 200 kyrs, as revealed by Mediterranean sapropels</title><title>Geophysical research letters</title><description>The isotopic ratio of atmospheric O
2
, δ
18
O
atm
, deduced from ice cores, displays large fluctuations during climatic cycles. These are caused principally by changes in the oxygen isotopic ratio of sea‐water, δ
18
O
sw
, and changes in the biosphere and in the hydrological cycle. As both δ
18
O
atm
and δ
18
O
sw
coincide closely over the last 135 kyr BP, it is generally believed that δ
18
O
atm
is driven mainly by δ
18
O
sw
. Here we focus on the major discrepancy, which arises between those two signals during the prior isotopic glacial stage 6, around 175 kyr BP, discrepancy which calls into question the role of changes in δ
18
O
sw
as the driving mechanism for δ
18
O
atm
. We present arguments, based on the occurrence and pollen content of Mediterranean sapropels, for another source of the δ
18
O
atm
change: insolation at low latitudes via hydrosphere/biosphere activity.</description><subject>Continental interfaces, environment</subject><subject>Ocean, Atmosphere</subject><subject>Sciences of the Universe</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNpFkN1Kw0AQhRdRsFYvfIO5FYzOZjc_e1mKtkKkIHodNsmkiabZsBureQpfxufwmUyx1Ks5nJk5cD7GLjnecPTVrYoWCY4qOGITrqT0YsTomE0Q1aj9KDxlZ869IqJAwSfs64ka3demhYz6D6IWGvMBO6t_Lwjq1pn9XrcF_HwDj2EFeaXbNYEpQfcb47qKbJ2D-RzWY0BpLPQVjSGuBx8R3gbrrkE7sLQl3VAB2QCPVNQ9Watb0i043VnTUePO2UmpG0cX-zllL_d3z_Oll6wWD_NZ4uUcY-5lcVQqGYYyKPnYUKkiDIUfy0ih8kWWY1D6QZxTySUVERWhHwkiqfJAcJ-EFFN29Zdb6SbtbL3RdkiNrtPlLEl3HgohgpHklv_f5tY4Z6k8PHBMd9TTA3XxC3bxdCw</recordid><startdate>19970515</startdate><enddate>19970515</enddate><creator>Mélières, M.‐A.</creator><creator>Rossignol‐Strick, M.</creator><creator>Malaizé, B.</creator><general>American Geophysical Union</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>VOOES</scope></search><sort><creationdate>19970515</creationdate><title>Relation between low latitude insolation and δ 18 O change of atmospheric oxygen for the last 200 kyrs, as revealed by Mediterranean sapropels</title><author>Mélières, M.‐A. ; Rossignol‐Strick, M. ; Malaizé, B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1081-b87f946645f180099d663284790923bc05f258cef14ed7ed6273ee49c5312e343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Continental interfaces, environment</topic><topic>Ocean, Atmosphere</topic><topic>Sciences of the Universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mélières, M.‐A.</creatorcontrib><creatorcontrib>Rossignol‐Strick, M.</creatorcontrib><creatorcontrib>Malaizé, B.</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mélières, M.‐A.</au><au>Rossignol‐Strick, M.</au><au>Malaizé, B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Relation between low latitude insolation and δ 18 O change of atmospheric oxygen for the last 200 kyrs, as revealed by Mediterranean sapropels</atitle><jtitle>Geophysical research letters</jtitle><date>1997-05-15</date><risdate>1997</risdate><volume>24</volume><issue>10</issue><spage>1235</spage><epage>1238</epage><pages>1235-1238</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>The isotopic ratio of atmospheric O
2
, δ
18
O
atm
, deduced from ice cores, displays large fluctuations during climatic cycles. These are caused principally by changes in the oxygen isotopic ratio of sea‐water, δ
18
O
sw
, and changes in the biosphere and in the hydrological cycle. As both δ
18
O
atm
and δ
18
O
sw
coincide closely over the last 135 kyr BP, it is generally believed that δ
18
O
atm
is driven mainly by δ
18
O
sw
. Here we focus on the major discrepancy, which arises between those two signals during the prior isotopic glacial stage 6, around 175 kyr BP, discrepancy which calls into question the role of changes in δ
18
O
sw
as the driving mechanism for δ
18
O
atm
. We present arguments, based on the occurrence and pollen content of Mediterranean sapropels, for another source of the δ
18
O
atm
change: insolation at low latitudes via hydrosphere/biosphere activity.</abstract><pub>American Geophysical Union</pub><doi>10.1029/97GL01025</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-8276 |
| ispartof | Geophysical research letters, 1997-05, Vol.24 (10), p.1235-1238 |
| issn | 0094-8276 1944-8007 |
| language | eng |
| recordid | cdi_hal_primary_oai_HAL_hal_03335010v1 |
| source | Wiley-Blackwell AGU Digital Library |
| subjects | Continental interfaces, environment Ocean, Atmosphere Sciences of the Universe |
| title | Relation between low latitude insolation and δ 18 O change of atmospheric oxygen for the last 200 kyrs, as revealed by Mediterranean sapropels |
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