Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool
We present a new record of eolian dust flux to the western Subarctic North Pacific (SNP) covering the past 27,000years based on a core from the Detroit Seamount. Comparing the SNP dust record to the North Greenland Ice Core Project (NGRIP) ice core record shows significant differences in the amplitu...
Published in: | Paleoceanography |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/38854 https://doi.org/10.1002/2014PA002748 |
id |
ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:38854 |
---|---|
record_format |
openpolar |
spelling |
ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:38854 2023-05-15T13:50:38+02:00 Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool Serno, Sascha Winckler, Gisela Anderson, Robert F. Maier, Edith Ren, Haojia Gersonde, Rainer Haug, Gerald H. 2015 https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/38854 https://doi.org/10.1002/2014PA002748 eng eng https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/38854 https://doi.org/10.1002/2014PA002748 info:eu-repo/semantics/closedAccess Institut für Geowissenschaften article doc-type:article 2015 ftubpotsdam https://doi.org/10.1002/2014PA002748 2022-07-28T20:46:52Z We present a new record of eolian dust flux to the western Subarctic North Pacific (SNP) covering the past 27,000years based on a core from the Detroit Seamount. Comparing the SNP dust record to the North Greenland Ice Core Project (NGRIP) ice core record shows significant differences in the amplitude of dust changes to the two regions during the last deglaciation, while the timing of abrupt changes is synchronous. If dust deposition in the SNP faithfully records its mobilization in East Asian source regions, then the difference in the relative amplitude must reflect climate-related changes in atmospheric dust transport to Greenland. Based on the synchronicity in the timing of dust changes in the SNP and Greenland, we tie abrupt deglacial transitions in the Th-230-normalized He-4 flux record to corresponding transitions in the well-dated NGRIP dust flux record to provide a new chronostratigraphic technique for marine sediments from the SNP. Results from this technique are complemented by radiocarbon dating, which allows us to independently constrain radiocarbon paleoreservoir ages. We find paleoreservoir ages of 745140years at 11,653year B.P., 680228years at 14,630year B.P., and 790498years at 23,290year B.P. Our reconstructed paleoreservoir ages are consistent with modern surface water reservoir ages in the western SNP. Good temporal synchronicity between eolian dust records from the Subantarctic Atlantic and equatorial Pacific and the ice core record from Antarctica supports the reliability of the proposed dust tuning method to be used more widely in other global ocean regions. Article in Journal/Newspaper Antarc* Antarctica Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project Subarctic University of Potsdam: publish.UP Detroit ENVELOPE(-60.000,-60.000,-64.167,-64.167) Greenland Pacific Paleoceanography 30 6 583 600 |
institution |
Open Polar |
collection |
University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
topic |
Institut für Geowissenschaften |
spellingShingle |
Institut für Geowissenschaften Serno, Sascha Winckler, Gisela Anderson, Robert F. Maier, Edith Ren, Haojia Gersonde, Rainer Haug, Gerald H. Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool |
topic_facet |
Institut für Geowissenschaften |
description |
We present a new record of eolian dust flux to the western Subarctic North Pacific (SNP) covering the past 27,000years based on a core from the Detroit Seamount. Comparing the SNP dust record to the North Greenland Ice Core Project (NGRIP) ice core record shows significant differences in the amplitude of dust changes to the two regions during the last deglaciation, while the timing of abrupt changes is synchronous. If dust deposition in the SNP faithfully records its mobilization in East Asian source regions, then the difference in the relative amplitude must reflect climate-related changes in atmospheric dust transport to Greenland. Based on the synchronicity in the timing of dust changes in the SNP and Greenland, we tie abrupt deglacial transitions in the Th-230-normalized He-4 flux record to corresponding transitions in the well-dated NGRIP dust flux record to provide a new chronostratigraphic technique for marine sediments from the SNP. Results from this technique are complemented by radiocarbon dating, which allows us to independently constrain radiocarbon paleoreservoir ages. We find paleoreservoir ages of 745140years at 11,653year B.P., 680228years at 14,630year B.P., and 790498years at 23,290year B.P. Our reconstructed paleoreservoir ages are consistent with modern surface water reservoir ages in the western SNP. Good temporal synchronicity between eolian dust records from the Subantarctic Atlantic and equatorial Pacific and the ice core record from Antarctica supports the reliability of the proposed dust tuning method to be used more widely in other global ocean regions. |
format |
Article in Journal/Newspaper |
author |
Serno, Sascha Winckler, Gisela Anderson, Robert F. Maier, Edith Ren, Haojia Gersonde, Rainer Haug, Gerald H. |
author_facet |
Serno, Sascha Winckler, Gisela Anderson, Robert F. Maier, Edith Ren, Haojia Gersonde, Rainer Haug, Gerald H. |
author_sort |
Serno, Sascha |
title |
Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool |
title_short |
Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool |
title_full |
Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool |
title_fullStr |
Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool |
title_full_unstemmed |
Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool |
title_sort |
comparing dust flux records from the subarctic north pacific and greenland: implications for atmospheric transport to greenland and for the application of dust as a chronostratigraphic tool |
publishDate |
2015 |
url |
https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/38854 https://doi.org/10.1002/2014PA002748 |
long_lat |
ENVELOPE(-60.000,-60.000,-64.167,-64.167) |
geographic |
Detroit Greenland Pacific |
geographic_facet |
Detroit Greenland Pacific |
genre |
Antarc* Antarctica Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project Subarctic |
genre_facet |
Antarc* Antarctica Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project Subarctic |
op_relation |
https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/38854 https://doi.org/10.1002/2014PA002748 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/2014PA002748 |
container_title |
Paleoceanography |
container_volume |
30 |
container_issue |
6 |
container_start_page |
583 |
op_container_end_page |
600 |
_version_ |
1766253785960677376 |