Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B
The Greenland ice sheet is accepted as a key factor controlling the Quaternary glacial scenario. However, the origin and mechanisms of major Arctic glaciation starting at 3.15 Ma and culminating at 2.74 Ma are still controversial. For this phase of intense cooling Ravelo et al. proposed a complex gr...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.484677 2023-05-15T15:12:17+02:00 Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B Bartoli, Gretta Sarnthein, Michael Weinelt, Mara Erlenkeuser, Helmut Garbe-Schönberg, Dieter Lea, David W MEDIAN LATITUDE: 53.177086 * MEDIAN LONGITUDE: -24.193714 * SOUTH-BOUND LATITUDE: 49.877800 * WEST-BOUND LONGITUDE: -24.238200 * NORTH-BOUND LATITUDE: 61.425300 * EAST-BOUND LONGITUDE: -24.082500 * DATE/TIME START: 1983-07-22T00:00:00 * DATE/TIME END: 1995-07-28T08:20:00 2005-05-11 application/zip, 14 datasets https://doi.pangaea.de/10.1594/PANGAEA.484677 https://doi.org/10.1594/PANGAEA.484677 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.484677 https://doi.org/10.1594/PANGAEA.484677 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Bartoli, Gretta; Sarnthein, Michael; Weinelt, Mara; Erlenkeuser, Helmut; Garbe-Schönberg, Dieter; Lea, David W (2005): Final closure of Panama and the onset of northern hemisphere glaciation. Earth and Planetary Science Letters, 237, 33-44, https://doi.org/10.1016/j.epsl.2005.06.020 162-984B 94-609B Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Impact of Gateways on Ocean Circulation Climate and Evolution Joides Resolution Leg162 Leg94 North Atlantic/FLANK North Atlantic Ocean Ocean Drilling Program OceanGateways ODP Dataset 2005 ftpangaea https://doi.org/10.1594/PANGAEA.484677 https://doi.org/10.1016/j.epsl.2005.06.020 2023-01-20T07:30:59Z The Greenland ice sheet is accepted as a key factor controlling the Quaternary glacial scenario. However, the origin and mechanisms of major Arctic glaciation starting at 3.15 Ma and culminating at 2.74 Ma are still controversial. For this phase of intense cooling Ravelo et al. proposed a complex gradual forcing mechanism. In contrast, our new submillennial-scale paleoceanographic records from the Pliocene North Atlantic suggest a far more precise timing and forcing for the initiation of northern hemisphere glaciation (NHG), since it was linked to a 2-3 °C surface water warming during warm stages from 2.95 to 2.82 Ma. These records support previous models, claiming that the final closure of the Panama Isthmus (3.0- ~2.5 Ma induced an increased poleward salt and heat transport. Associated strengthening of North Atlantic Thermohaline Circulation and in turn, an intensified moisture supply to northern high latitudes resulted in the build-up of NHG, finally culminating in the great, irreversible climate crash at marine isotope stage G6 (2.74 Ma). In summary, there was a two-step threshold mechanism that marked the onset of NHG with glacial-to-interglacial cycles quasi-persistent until today. Dataset Arctic Greenland Ice Sheet North Atlantic North atlantic Thermohaline circulation PANGAEA - Data Publisher for Earth & Environmental Science Arctic Greenland ENVELOPE(-24.238200,-24.082500,61.425300,49.877800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
162-984B 94-609B Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Impact of Gateways on Ocean Circulation Climate and Evolution Joides Resolution Leg162 Leg94 North Atlantic/FLANK North Atlantic Ocean Ocean Drilling Program OceanGateways ODP |
spellingShingle |
162-984B 94-609B Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Impact of Gateways on Ocean Circulation Climate and Evolution Joides Resolution Leg162 Leg94 North Atlantic/FLANK North Atlantic Ocean Ocean Drilling Program OceanGateways ODP Bartoli, Gretta Sarnthein, Michael Weinelt, Mara Erlenkeuser, Helmut Garbe-Schönberg, Dieter Lea, David W Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B |
topic_facet |
162-984B 94-609B Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Impact of Gateways on Ocean Circulation Climate and Evolution Joides Resolution Leg162 Leg94 North Atlantic/FLANK North Atlantic Ocean Ocean Drilling Program OceanGateways ODP |
description |
The Greenland ice sheet is accepted as a key factor controlling the Quaternary glacial scenario. However, the origin and mechanisms of major Arctic glaciation starting at 3.15 Ma and culminating at 2.74 Ma are still controversial. For this phase of intense cooling Ravelo et al. proposed a complex gradual forcing mechanism. In contrast, our new submillennial-scale paleoceanographic records from the Pliocene North Atlantic suggest a far more precise timing and forcing for the initiation of northern hemisphere glaciation (NHG), since it was linked to a 2-3 °C surface water warming during warm stages from 2.95 to 2.82 Ma. These records support previous models, claiming that the final closure of the Panama Isthmus (3.0- ~2.5 Ma induced an increased poleward salt and heat transport. Associated strengthening of North Atlantic Thermohaline Circulation and in turn, an intensified moisture supply to northern high latitudes resulted in the build-up of NHG, finally culminating in the great, irreversible climate crash at marine isotope stage G6 (2.74 Ma). In summary, there was a two-step threshold mechanism that marked the onset of NHG with glacial-to-interglacial cycles quasi-persistent until today. |
format |
Dataset |
author |
Bartoli, Gretta Sarnthein, Michael Weinelt, Mara Erlenkeuser, Helmut Garbe-Schönberg, Dieter Lea, David W |
author_facet |
Bartoli, Gretta Sarnthein, Michael Weinelt, Mara Erlenkeuser, Helmut Garbe-Schönberg, Dieter Lea, David W |
author_sort |
Bartoli, Gretta |
title |
Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B |
title_short |
Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B |
title_full |
Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B |
title_fullStr |
Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B |
title_full_unstemmed |
Stable isotope analysis and temperature reconstruction data from DSDP Hole 94-609B and ODP Hole 162-984B |
title_sort |
stable isotope analysis and temperature reconstruction data from dsdp hole 94-609b and odp hole 162-984b |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.484677 https://doi.org/10.1594/PANGAEA.484677 |
op_coverage |
MEDIAN LATITUDE: 53.177086 * MEDIAN LONGITUDE: -24.193714 * SOUTH-BOUND LATITUDE: 49.877800 * WEST-BOUND LONGITUDE: -24.238200 * NORTH-BOUND LATITUDE: 61.425300 * EAST-BOUND LONGITUDE: -24.082500 * DATE/TIME START: 1983-07-22T00:00:00 * DATE/TIME END: 1995-07-28T08:20:00 |
long_lat |
ENVELOPE(-24.238200,-24.082500,61.425300,49.877800) |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet North Atlantic North atlantic Thermohaline circulation |
genre_facet |
Arctic Greenland Ice Sheet North Atlantic North atlantic Thermohaline circulation |
op_source |
Supplement to: Bartoli, Gretta; Sarnthein, Michael; Weinelt, Mara; Erlenkeuser, Helmut; Garbe-Schönberg, Dieter; Lea, David W (2005): Final closure of Panama and the onset of northern hemisphere glaciation. Earth and Planetary Science Letters, 237, 33-44, https://doi.org/10.1016/j.epsl.2005.06.020 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.484677 https://doi.org/10.1594/PANGAEA.484677 |
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.484677 https://doi.org/10.1016/j.epsl.2005.06.020 |
_version_ |
1766342985997352960 |