(Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215
In a piston core from the central Bering Sea, diatom microfossil-bound N isotopes and the concentrations of opal, biogenic barium, calcium carbonate, and organic N are measured over the last glacial/interglacial cycle. Compared to the interglacial sections of the core, the sediments of the last ice...
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ftdatacite:10.1594/pangaea.833622 2023-05-15T15:43:16+02:00 (Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215 Brunelle, Brigitte G Sigman, Daniel M Cook, Mea S Keigwin, Lloyd D Haug, Gerald H Plessen, Birgit Schettler, Georg Jaccard, Samuel L 2014 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.833622 https://doi.pangaea.de/10.1594/PANGAEA.833622 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2005pa001205 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY DEPTH, sediment/rock AGE δ15N, bulk sediment δ15N Opal, biogenic silica Barium Aluminium Barium, biogenic Nitrogen, total Calcium carbonate Neogloboquadrina pachyderma sinistral, δ18O Uvigerina sp., δ18O Age, dated Age, dated standard deviation Calendar age, maximum/old Calendar age, minimum/young Accumulation rate, mass Accumulation rate, barium Accumulation rate, calcium Accumulation rate, opal Jumbo Piston Core Age, 14C AMS Age, 14C calibrated Normalized HLY0202 Healy Dataset dataset Supplementary Dataset 2014 ftdatacite https://doi.org/10.1594/pangaea.833622 https://doi.org/10.1029/2005pa001205 2022-02-09T13:17:17Z In a piston core from the central Bering Sea, diatom microfossil-bound N isotopes and the concentrations of opal, biogenic barium, calcium carbonate, and organic N are measured over the last glacial/interglacial cycle. Compared to the interglacial sections of the core, the sediments of the last ice age are characterized by 3 per mil higher diatom-bound d15N, 70 wt % lower opal content and 1200 ppm lower biogenic barium. Taken together and with constraints on sediment accumulation rate, these results suggest a reduced supply of nitrate to the surface due to stronger stratification of the upper water column of the Bering Sea during glacial times, with more complete nitrate consumption resulting from continued iron supply through atmospheric deposition. This finding extends the body of evidence for a pervasive link between cold climates and polar ocean stratification. In addition, we hypothesize that more complete nutrient consumption in the glacial age subarctic Pacific contributed to the previously observed ice age reduction in suboxia and denitrification in the eastern tropical North Pacific by lowering the nutrient content of the intermediate-depth water formed in the subpolar North Pacific. In the deglacial interval of the Bering Sea record, two apparent peaks in export productivity are associated with maxima in diatom-bound and bulk sediment d15N. The high d15N in these intervals may have resulted from greater surface nutrient consumption during this period. However, the synchroneity of the deglacial peaks in the Bering Sea with similar bulk sediment d15N changes in the eastern Pacific margin and the presence of sediment lamination within the Bering Sea during the deposition of the productivity peaks raise the possibility that both regional and local denitrification worked to raise the d15N of the nitrate feeding Bering Sea surface waters at these times. Dataset Bering Sea Neogloboquadrina pachyderma Subarctic DataCite Metadata Store (German National Library of Science and Technology) Bering Sea Haug ENVELOPE(15.188,15.188,67.918,67.918) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, sediment/rock AGE δ15N, bulk sediment δ15N Opal, biogenic silica Barium Aluminium Barium, biogenic Nitrogen, total Calcium carbonate Neogloboquadrina pachyderma sinistral, δ18O Uvigerina sp., δ18O Age, dated Age, dated standard deviation Calendar age, maximum/old Calendar age, minimum/young Accumulation rate, mass Accumulation rate, barium Accumulation rate, calcium Accumulation rate, opal Jumbo Piston Core Age, 14C AMS Age, 14C calibrated Normalized HLY0202 Healy |
spellingShingle |
DEPTH, sediment/rock AGE δ15N, bulk sediment δ15N Opal, biogenic silica Barium Aluminium Barium, biogenic Nitrogen, total Calcium carbonate Neogloboquadrina pachyderma sinistral, δ18O Uvigerina sp., δ18O Age, dated Age, dated standard deviation Calendar age, maximum/old Calendar age, minimum/young Accumulation rate, mass Accumulation rate, barium Accumulation rate, calcium Accumulation rate, opal Jumbo Piston Core Age, 14C AMS Age, 14C calibrated Normalized HLY0202 Healy Brunelle, Brigitte G Sigman, Daniel M Cook, Mea S Keigwin, Lloyd D Haug, Gerald H Plessen, Birgit Schettler, Georg Jaccard, Samuel L (Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215 |
topic_facet |
DEPTH, sediment/rock AGE δ15N, bulk sediment δ15N Opal, biogenic silica Barium Aluminium Barium, biogenic Nitrogen, total Calcium carbonate Neogloboquadrina pachyderma sinistral, δ18O Uvigerina sp., δ18O Age, dated Age, dated standard deviation Calendar age, maximum/old Calendar age, minimum/young Accumulation rate, mass Accumulation rate, barium Accumulation rate, calcium Accumulation rate, opal Jumbo Piston Core Age, 14C AMS Age, 14C calibrated Normalized HLY0202 Healy |
description |
In a piston core from the central Bering Sea, diatom microfossil-bound N isotopes and the concentrations of opal, biogenic barium, calcium carbonate, and organic N are measured over the last glacial/interglacial cycle. Compared to the interglacial sections of the core, the sediments of the last ice age are characterized by 3 per mil higher diatom-bound d15N, 70 wt % lower opal content and 1200 ppm lower biogenic barium. Taken together and with constraints on sediment accumulation rate, these results suggest a reduced supply of nitrate to the surface due to stronger stratification of the upper water column of the Bering Sea during glacial times, with more complete nitrate consumption resulting from continued iron supply through atmospheric deposition. This finding extends the body of evidence for a pervasive link between cold climates and polar ocean stratification. In addition, we hypothesize that more complete nutrient consumption in the glacial age subarctic Pacific contributed to the previously observed ice age reduction in suboxia and denitrification in the eastern tropical North Pacific by lowering the nutrient content of the intermediate-depth water formed in the subpolar North Pacific. In the deglacial interval of the Bering Sea record, two apparent peaks in export productivity are associated with maxima in diatom-bound and bulk sediment d15N. The high d15N in these intervals may have resulted from greater surface nutrient consumption during this period. However, the synchroneity of the deglacial peaks in the Bering Sea with similar bulk sediment d15N changes in the eastern Pacific margin and the presence of sediment lamination within the Bering Sea during the deposition of the productivity peaks raise the possibility that both regional and local denitrification worked to raise the d15N of the nitrate feeding Bering Sea surface waters at these times. |
format |
Dataset |
author |
Brunelle, Brigitte G Sigman, Daniel M Cook, Mea S Keigwin, Lloyd D Haug, Gerald H Plessen, Birgit Schettler, Georg Jaccard, Samuel L |
author_facet |
Brunelle, Brigitte G Sigman, Daniel M Cook, Mea S Keigwin, Lloyd D Haug, Gerald H Plessen, Birgit Schettler, Georg Jaccard, Samuel L |
author_sort |
Brunelle, Brigitte G |
title |
(Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215 |
title_short |
(Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215 |
title_full |
(Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215 |
title_fullStr |
(Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215 |
title_full_unstemmed |
(Table S1) N15 isotope ratios, age determination and accumulation rates of sediment core HLY02-02-17, supplement to: Brunelle, Brigitte G; Sigman, Daniel M; Cook, Mea S; Keigwin, Lloyd D; Haug, Gerald H; Plessen, Birgit; Schettler, Georg; Jaccard, Samuel L (2007): Evidence from diatom-bound nitrogen isotopes for subarctic Pacific stratification during the last ice age and a link to North Pacific denitrification changes. Paleoceanography, 22(1), PA1215 |
title_sort |
(table s1) n15 isotope ratios, age determination and accumulation rates of sediment core hly02-02-17, supplement to: brunelle, brigitte g; sigman, daniel m; cook, mea s; keigwin, lloyd d; haug, gerald h; plessen, birgit; schettler, georg; jaccard, samuel l (2007): evidence from diatom-bound nitrogen isotopes for subarctic pacific stratification during the last ice age and a link to north pacific denitrification changes. paleoceanography, 22(1), pa1215 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.833622 https://doi.pangaea.de/10.1594/PANGAEA.833622 |
long_lat |
ENVELOPE(15.188,15.188,67.918,67.918) |
geographic |
Bering Sea Haug Pacific |
geographic_facet |
Bering Sea Haug Pacific |
genre |
Bering Sea Neogloboquadrina pachyderma Subarctic |
genre_facet |
Bering Sea Neogloboquadrina pachyderma Subarctic |
op_relation |
https://dx.doi.org/10.1029/2005pa001205 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.833622 https://doi.org/10.1029/2005pa001205 |
_version_ |
1766377325963771904 |