Alkenone unsaturation index and alkenones in ODP Hole 161-977A
A number of essential elements closely related to each other are involved in the Earth's climatic system. The temporal and spatial distribution of insolation determines wind patterns and the ocean's thermohaline pump. In turn, these last two are directly linked to the extension and retreat...
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Language: | English |
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PANGAEA
2007
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.819829 https://doi.org/10.1594/PANGAEA.819829 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.819829 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
161-977A AGE Alboran Sea Alkenone C37:2Me+C37:3Me unsaturation index UK'37 Calculated from UK'37 (Müller et al 1998) DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Joides Resolution Leg161 Ocean Drilling Program ODP Sample code/label Sea surface temperature annual mean |
spellingShingle |
161-977A AGE Alboran Sea Alkenone C37:2Me+C37:3Me unsaturation index UK'37 Calculated from UK'37 (Müller et al 1998) DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Joides Resolution Leg161 Ocean Drilling Program ODP Sample code/label Sea surface temperature annual mean Martrat, Belén Alkenone unsaturation index and alkenones in ODP Hole 161-977A |
topic_facet |
161-977A AGE Alboran Sea Alkenone C37:2Me+C37:3Me unsaturation index UK'37 Calculated from UK'37 (Müller et al 1998) DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Joides Resolution Leg161 Ocean Drilling Program ODP Sample code/label Sea surface temperature annual mean |
description |
A number of essential elements closely related to each other are involved in the Earth's climatic system. The temporal and spatial distribution of insolation determines wind patterns and the ocean's thermohaline pump. In turn, these last two are directly linked to the extension and retreat of marine and continental ice and to the chemistry of the atmosphere and the ocean. The variability of these elements may trigger, amplify, sustain or globalize rapid climatic changes. Paleoclimatic oscillations have been identified in this thesis by using fossil organic compounds synthesized by marine and terrestrial flora. High sedimentation rate deposits at the Barents and the Iberian peninsula continental margins were chosen in order to estimate the climatic changes on centennial time resolution. At the Barents margin, the sediment recovered was up to 15,000 years old (unit ''a'', from latin ''annos'') (M23258; west of the Bjørnøya island). At the Iberian margin, the sediment cores studied covered a wide range of time spans: up to 115,000 a (MD99-2343; north of the Minorca island), up to 250,000 a (ODP-977A; Alboran basin) and up to 420,000 a (MD01-2442, MD01-2443, MD01-2444, MD01-2445; close to the Tagus abyssal plain). At the northern site, inputs containing marine, continental and ancient reworked organic matter provided a detailed reconstruction of climate history at the time of the final retreat of the Barents ice sheet. At the western Barents continental slope, warm climatic conditions were observed during the early Holocene (~from 8,650 a to 5,240 a ago); in contrast, an apparent long-term cooling trend occurred in the late Holocene (~from 5,240 a to 760 a ago), in consistence with other paleoarchives from northern and southern European latitudes. The Iberian margin sites, which were never covered with large ice sheets, preserved exceptionally complete sequences of rapid events during ice ages hitherto not studied in such great detail: during the last glacial (~from 70,900 a to 11,800 a ago), the second glacial ... |
format |
Dataset |
author |
Martrat, Belén |
author_facet |
Martrat, Belén |
author_sort |
Martrat, Belén |
title |
Alkenone unsaturation index and alkenones in ODP Hole 161-977A |
title_short |
Alkenone unsaturation index and alkenones in ODP Hole 161-977A |
title_full |
Alkenone unsaturation index and alkenones in ODP Hole 161-977A |
title_fullStr |
Alkenone unsaturation index and alkenones in ODP Hole 161-977A |
title_full_unstemmed |
Alkenone unsaturation index and alkenones in ODP Hole 161-977A |
title_sort |
alkenone unsaturation index and alkenones in odp hole 161-977a |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.819829 https://doi.org/10.1594/PANGAEA.819829 |
op_coverage |
LATITUDE: 36.031700 * LONGITUDE: -1.955280 * DATE/TIME START: 1995-06-08T23:15:00 * DATE/TIME END: 1995-06-15T14:30:00 * MINIMUM ELEVATION: -1984.0 m * MAXIMUM ELEVATION: -1984.0 m |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(-1.955280,-1.955280,36.031700,36.031700) |
geographic |
Bjørnøya |
geographic_facet |
Bjørnøya |
genre |
Bjørnøya Ice Sheet |
genre_facet |
Bjørnøya Ice Sheet |
op_source |
Supplement to: Martrat, Belén (2007): Studies of sedimentary organic matter to infer rapid climatic changes at the Barents and Iberian continental margins on centennial time resolution over the past four climate cycles of the Quaternary (ca. 420,000 years). Ph. D. Thesis, UPC, CSIC, Barcelona, Spain |
op_relation |
Huguet, Carme; Martrat, Belén; Grimalt, Joan O; Sinninghe Damsté, Jaap S; Schouten, Stefan (2011): Sea surface temperature (TEX86), marine GDGTs and BIT index from ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.819805 Martrat, Belén; Grimalt, Joan O; López-Martinez, Constancia; Cacho, Isabel; Sierro, Francisco Javier; Flores, José-Abel; Zahn, Rainer; Canals, Miquel; Curtis, Jason H; Hodell, David A (2004): Abrupt Temperature Changes in the Western Mediterranean over the Past 250,000 Years. Science, 306(5702), 1762-1765, https://doi.org/10.1126/science.1101706 Martrat, Belén; Grimalt, Joan O; López-Martinez, Constancia; Cacho, Isabel; Sierro, Francisco Javier; Flores, José-Abel; Zahn, Rainer; Canals, Miquel; Curtis, Jason H; Hodell, David A (2004): Sea surface temperatures, alkenones and sedimentation rate from ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.787811 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): Four climate cycles of recurring deep and surface water destabilizations on the Iberian Margin. Science, 317(5837), 502-507, https://doi.org/10.1126/science.1139994 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): Sea surface temperature estimation for the Iberian Margin. PANGAEA, https://doi.org/10.1594/PANGAEA.771894 Martrat, Belén; Grimalt, Joan O; Villanueva, Joan; van Kreveld, Shirley A; Sarnthein, Michael (2003): Temporal evolution of organic carbon and lipid content and derived SST of sediment core GIK23258-2, Norwegian Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.780467 https://doi.pangaea.de/10.1594/PANGAEA.819829 https://doi.org/10.1594/PANGAEA.819829 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.819829 https://doi.org/10.1594/PANGAEA.819805 https://doi.org/10.1126/science.1101706 https://doi.org/10.1594/PANGAEA.787811 https://doi.org/10.1126/science.1139994 https://doi.org/10.1594/PANGAEA.771894 https:/ |
_version_ |
1766379206283886592 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.819829 2023-05-15T15:44:50+02:00 Alkenone unsaturation index and alkenones in ODP Hole 161-977A Martrat, Belén LATITUDE: 36.031700 * LONGITUDE: -1.955280 * DATE/TIME START: 1995-06-08T23:15:00 * DATE/TIME END: 1995-06-15T14:30:00 * MINIMUM ELEVATION: -1984.0 m * MAXIMUM ELEVATION: -1984.0 m 2007-09-27 text/tab-separated-values, 1008 data points https://doi.pangaea.de/10.1594/PANGAEA.819829 https://doi.org/10.1594/PANGAEA.819829 en eng PANGAEA Huguet, Carme; Martrat, Belén; Grimalt, Joan O; Sinninghe Damsté, Jaap S; Schouten, Stefan (2011): Sea surface temperature (TEX86), marine GDGTs and BIT index from ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.819805 Martrat, Belén; Grimalt, Joan O; López-Martinez, Constancia; Cacho, Isabel; Sierro, Francisco Javier; Flores, José-Abel; Zahn, Rainer; Canals, Miquel; Curtis, Jason H; Hodell, David A (2004): Abrupt Temperature Changes in the Western Mediterranean over the Past 250,000 Years. Science, 306(5702), 1762-1765, https://doi.org/10.1126/science.1101706 Martrat, Belén; Grimalt, Joan O; López-Martinez, Constancia; Cacho, Isabel; Sierro, Francisco Javier; Flores, José-Abel; Zahn, Rainer; Canals, Miquel; Curtis, Jason H; Hodell, David A (2004): Sea surface temperatures, alkenones and sedimentation rate from ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.787811 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): Four climate cycles of recurring deep and surface water destabilizations on the Iberian Margin. Science, 317(5837), 502-507, https://doi.org/10.1126/science.1139994 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): Sea surface temperature estimation for the Iberian Margin. PANGAEA, https://doi.org/10.1594/PANGAEA.771894 Martrat, Belén; Grimalt, Joan O; Villanueva, Joan; van Kreveld, Shirley A; Sarnthein, Michael (2003): Temporal evolution of organic carbon and lipid content and derived SST of sediment core GIK23258-2, Norwegian Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.780467 https://doi.pangaea.de/10.1594/PANGAEA.819829 https://doi.org/10.1594/PANGAEA.819829 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Martrat, Belén (2007): Studies of sedimentary organic matter to infer rapid climatic changes at the Barents and Iberian continental margins on centennial time resolution over the past four climate cycles of the Quaternary (ca. 420,000 years). Ph. D. Thesis, UPC, CSIC, Barcelona, Spain 161-977A AGE Alboran Sea Alkenone C37:2Me+C37:3Me unsaturation index UK'37 Calculated from UK'37 (Müller et al 1998) DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Joides Resolution Leg161 Ocean Drilling Program ODP Sample code/label Sea surface temperature annual mean Dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.819829 https://doi.org/10.1594/PANGAEA.819805 https://doi.org/10.1126/science.1101706 https://doi.org/10.1594/PANGAEA.787811 https://doi.org/10.1126/science.1139994 https://doi.org/10.1594/PANGAEA.771894 https:/ 2023-01-20T09:01:36Z A number of essential elements closely related to each other are involved in the Earth's climatic system. The temporal and spatial distribution of insolation determines wind patterns and the ocean's thermohaline pump. In turn, these last two are directly linked to the extension and retreat of marine and continental ice and to the chemistry of the atmosphere and the ocean. The variability of these elements may trigger, amplify, sustain or globalize rapid climatic changes. Paleoclimatic oscillations have been identified in this thesis by using fossil organic compounds synthesized by marine and terrestrial flora. High sedimentation rate deposits at the Barents and the Iberian peninsula continental margins were chosen in order to estimate the climatic changes on centennial time resolution. At the Barents margin, the sediment recovered was up to 15,000 years old (unit ''a'', from latin ''annos'') (M23258; west of the Bjørnøya island). At the Iberian margin, the sediment cores studied covered a wide range of time spans: up to 115,000 a (MD99-2343; north of the Minorca island), up to 250,000 a (ODP-977A; Alboran basin) and up to 420,000 a (MD01-2442, MD01-2443, MD01-2444, MD01-2445; close to the Tagus abyssal plain). At the northern site, inputs containing marine, continental and ancient reworked organic matter provided a detailed reconstruction of climate history at the time of the final retreat of the Barents ice sheet. At the western Barents continental slope, warm climatic conditions were observed during the early Holocene (~from 8,650 a to 5,240 a ago); in contrast, an apparent long-term cooling trend occurred in the late Holocene (~from 5,240 a to 760 a ago), in consistence with other paleoarchives from northern and southern European latitudes. The Iberian margin sites, which were never covered with large ice sheets, preserved exceptionally complete sequences of rapid events during ice ages hitherto not studied in such great detail: during the last glacial (~from 70,900 a to 11,800 a ago), the second glacial ... Dataset Bjørnøya Ice Sheet PANGAEA - Data Publisher for Earth & Environmental Science Bjørnøya ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(-1.955280,-1.955280,36.031700,36.031700) |