Age determination of ODP Hole 182-1127B (Table 1)
In Northern Hemisphere deglaciation records, the transition from the last glacial to the Holocene indicates a rapid return to near-glacial conditions during the Younger Dryas, whereas their Southern Hemisphere ice core counterparts record two separate cooling events: the Antarctic Cold Reversal and...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.708217 2024-09-15T17:45:07+00:00 Age determination of ODP Hole 182-1127B (Table 1) Andres, Miriam S Bernasconi, Stefano M McKenzie, Judith A Röhl, Ursula LATITUDE: -33.357500 * LONGITUDE: 128.481280 * DATE/TIME START: 1998-10-30T21:30:00 * DATE/TIME END: 1998-11-03T01:45:00 * MINIMUM DEPTH, sediment/rock: 6.90 m * MAXIMUM DEPTH, sediment/rock: 9.55 m 2003 text/tab-separated-values, 48 data points https://doi.pangaea.de/10.1594/PANGAEA.708217 https://doi.org/10.1594/PANGAEA.708217 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.708217 https://doi.org/10.1594/PANGAEA.708217 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Andres, Miriam S; Bernasconi, Stefano M; McKenzie, Judith A; Röhl, Ursula (2003): Southern Ocean deglacial record supports global Younger Dryas. Earth and Planetary Science Letters, 216(4), 515-524, https://doi.org/10.1016/S0012-821X(03)00556-9 182-1127B Age 14C AMS 14C calibrated dated dated standard deviation maximum/old minimum/young DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Great Australian Bight Joides Resolution Leg182 Ocean Drilling Program ODP Sample code/label Sample code/label 2 dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.70821710.1016/S0012-821X(03)00556-9 2024-07-24T02:31:30Z In Northern Hemisphere deglaciation records, the transition from the last glacial to the Holocene indicates a rapid return to near-glacial conditions during the Younger Dryas, whereas their Southern Hemisphere ice core counterparts record two separate cooling events: the Antarctic Cold Reversal and the Oceanic Cold Reversal. Spatial distribution and relative timing of these events in both hemispheres are central for our understanding of causes and mechanisms of abrupt climate change. To date, no marine record from the southern mid-latitudes conclusively demonstrates that the Younger Dryas was a significant event in the Southern Ocean. Here, we present high-resolution oxygen isotope and iron content records of a radiocarbon-dated sedimentary sequence from the Great Australian Bight, which constrains oceanic and atmospheric changes during the last deglaciation. Oxygen isotopes from planktonic foraminifera indicate two rapid cold reversals (between 13.1 and 11.1 kyr BP) separated by a brief warming. The sedimentary iron content, interpreted as a proxy for wind strength, indicates a simultaneous change in atmospheric circulation pattern. Both records demonstrate the existence of cooling events in the Southern Hemisphere, which are synchronous with the Northern Hemisphere Younger Dryas cold reversal (between 12.9 and 11.5 kyr BP). Such evidence for the spatial distribution and timing of abrupt climatic fluctuations is essential data for groundtruthing results derived from global climate models. Dataset Antarc* Antarctic ice core Planktonic foraminifera Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(128.481280,128.481280,-33.357500,-33.357500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
182-1127B Age 14C AMS 14C calibrated dated dated standard deviation maximum/old minimum/young DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Great Australian Bight Joides Resolution Leg182 Ocean Drilling Program ODP Sample code/label Sample code/label 2 |
spellingShingle |
182-1127B Age 14C AMS 14C calibrated dated dated standard deviation maximum/old minimum/young DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Great Australian Bight Joides Resolution Leg182 Ocean Drilling Program ODP Sample code/label Sample code/label 2 Andres, Miriam S Bernasconi, Stefano M McKenzie, Judith A Röhl, Ursula Age determination of ODP Hole 182-1127B (Table 1) |
topic_facet |
182-1127B Age 14C AMS 14C calibrated dated dated standard deviation maximum/old minimum/young DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Great Australian Bight Joides Resolution Leg182 Ocean Drilling Program ODP Sample code/label Sample code/label 2 |
description |
In Northern Hemisphere deglaciation records, the transition from the last glacial to the Holocene indicates a rapid return to near-glacial conditions during the Younger Dryas, whereas their Southern Hemisphere ice core counterparts record two separate cooling events: the Antarctic Cold Reversal and the Oceanic Cold Reversal. Spatial distribution and relative timing of these events in both hemispheres are central for our understanding of causes and mechanisms of abrupt climate change. To date, no marine record from the southern mid-latitudes conclusively demonstrates that the Younger Dryas was a significant event in the Southern Ocean. Here, we present high-resolution oxygen isotope and iron content records of a radiocarbon-dated sedimentary sequence from the Great Australian Bight, which constrains oceanic and atmospheric changes during the last deglaciation. Oxygen isotopes from planktonic foraminifera indicate two rapid cold reversals (between 13.1 and 11.1 kyr BP) separated by a brief warming. The sedimentary iron content, interpreted as a proxy for wind strength, indicates a simultaneous change in atmospheric circulation pattern. Both records demonstrate the existence of cooling events in the Southern Hemisphere, which are synchronous with the Northern Hemisphere Younger Dryas cold reversal (between 12.9 and 11.5 kyr BP). Such evidence for the spatial distribution and timing of abrupt climatic fluctuations is essential data for groundtruthing results derived from global climate models. |
format |
Dataset |
author |
Andres, Miriam S Bernasconi, Stefano M McKenzie, Judith A Röhl, Ursula |
author_facet |
Andres, Miriam S Bernasconi, Stefano M McKenzie, Judith A Röhl, Ursula |
author_sort |
Andres, Miriam S |
title |
Age determination of ODP Hole 182-1127B (Table 1) |
title_short |
Age determination of ODP Hole 182-1127B (Table 1) |
title_full |
Age determination of ODP Hole 182-1127B (Table 1) |
title_fullStr |
Age determination of ODP Hole 182-1127B (Table 1) |
title_full_unstemmed |
Age determination of ODP Hole 182-1127B (Table 1) |
title_sort |
age determination of odp hole 182-1127b (table 1) |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.708217 https://doi.org/10.1594/PANGAEA.708217 |
op_coverage |
LATITUDE: -33.357500 * LONGITUDE: 128.481280 * DATE/TIME START: 1998-10-30T21:30:00 * DATE/TIME END: 1998-11-03T01:45:00 * MINIMUM DEPTH, sediment/rock: 6.90 m * MAXIMUM DEPTH, sediment/rock: 9.55 m |
long_lat |
ENVELOPE(128.481280,128.481280,-33.357500,-33.357500) |
genre |
Antarc* Antarctic ice core Planktonic foraminifera Southern Ocean |
genre_facet |
Antarc* Antarctic ice core Planktonic foraminifera Southern Ocean |
op_source |
Supplement to: Andres, Miriam S; Bernasconi, Stefano M; McKenzie, Judith A; Röhl, Ursula (2003): Southern Ocean deglacial record supports global Younger Dryas. Earth and Planetary Science Letters, 216(4), 515-524, https://doi.org/10.1016/S0012-821X(03)00556-9 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.708217 https://doi.org/10.1594/PANGAEA.708217 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.70821710.1016/S0012-821X(03)00556-9 |
_version_ |
1810492837345624064 |