NDLI: Intensification of North Pacific intermediate water ventilation during the Younger Dryas

Please wait, while we are loading the content...

Submarine landslides offshore Vancouver Island along the northern Cascadia margin, British Columbia: why preconditioning is likely required to trigger slope failure

Expelled subsalt fluids form a pockmark field in the eastern Red Sea

Intensification of North Pacific intermediate water ventilation during the Younger Dryas

Organic biomarker records spanning the last 34,800 years from the southeastern Brazilian upper slope: links between sea surface temperature, displacement of the Brazil Current, and marine productivity

Post-bomb coral Δ14C record from Iki Island, Japan: possible evidence of oceanographic conditions on the northern East China Sea shelf

Characterising natural bedform morphology and its influence on flow

Seismic peak amplitude as a predictor of TOC content in shallow marine sediments

Geo-Marine Letters : Volume 36, Issue 3, June 2016

Geo-Marine Letters : Volume 36, Issue 2, April 2016

Geo-Marine Letters : Volume 36, Issue 1, February 2016

Geo-Marine Letters : Volume 35

Geo-Marine Letters : Volume 34

Geo-Marine Letters : Volume 33

Geo-Marine Letters : Volume 32

Geo-Marine Letters : Volume 31

Geo-Marine Letters : Volume 30

Geo-Marine Letters : Volume 29

Geo-Marine Letters : Volume 28

Geo-Marine Letters : Volume 27

Geo-Marine Letters : Volume 26

Geo-Marine Letters : Volume 25

Geo-Marine Letters : Volume 24

Geo-Marine Letters : Volume 23

Geo-Marine Letters : Volume 22

Geo-Marine Letters : Volume 21

Geo-Marine Letters : Volume 20

Geo-Marine Letters : Volume 19

Geo-Marine Letters : Volume 18

Geo-Marine Letters : Volume 17

Intensification of North Pacific intermediate water ventilation during the Younger Dryas

Content Provider	Springer Nature Link
Author	Ohkushi, Ken’ichi Hara, Naoki Ikehara, Miru Uchida, Masao Ahagon, Naokazu
Copyright Year	2016
Abstract	Modern North Pacific intermediate water (NPIW) is formed in the mixed water region where the Oyashio and Kuroshio currents meet. The source for cooling and freshening of NPIW is intermediate water in the Okhotsk Sea. The Okhotsk intermediate water outflows to the open Pacific, forming the Oyashio intermediate water by mixing with the subarctic gyre water. In the Oyashio region, the intermediate water originating from the Okhotsk Sea flows mainly at depths shallower than 500 m. On the other hand, ventilation of intermediate water in the subarctic Pacific during the deglaciation remains a topic of debate. In this study, foraminiferal δ18O and δ13C signatures were determined in a dated sediment core collected at 777 m water depth to evaluate the intensity and depth distribution of the source of NPIW since the last deglaciation in the Oyashio region. Benthic foraminiferal δ18O increased by 0.3–0.4‰ from the end of the Bølling/Ållerød warm episode to the Younger Dryas cold episode, suggesting intermediate water cooling. Consistent with this trend, benthic δ13C values point to decreased nutrient contents during the cold event. Conversely, benthic δ18O signatures from a nearby core site at a water depth of 1,366 m did not show such cooling. These results suggest that cold intermediate water originating from the north was actively ventilated at depths of at least 700–800 m, and possibly even 1,200 m during the Younger Dryas, implying that NPIW ventilation was thicker and deeper than under modern conditions.
Starting Page	353
Ending Page	360
Page Count	8
File Format	PDF
ISSN	02760460
Journal	Geo-Marine Letters
Volume Number	36
Issue Number	5
e-ISSN	14321157
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-04-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geology
Content Type	Text
Resource Type	Article
Subject	Environmental Science Geotechnical Engineering and Engineering Geology Oceanography

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Abrupt changes of intermediate-water oxygen in the northwestern Pacific during the last 27 kyr

High-resolution IP25-based reconstruction of sea-ice variability in the western North Pacific and Bering Sea during the past 18,000 years

Did the East Pacific rise subduct beneath the North America plate (western Mexico)?

Late quaternary distribution of the Cycladophora davisiana radiolarian species: Reflection of possible ventilation of the North Pacific intermediate water during the Last Glacial Maximum

The destiny of the North Pacific Intermediate Water in the South China Sea

Local origins of interdecadal Pacific variability in the tropical and North Pacific Ocean: evidence from a comparative study of coral oxygen isotope records

Evolution of the basalts from three back-arc basins of southwest Pacific

Modification of North Pacific Intermediate Water around Mixed Water Region

Modeling dissolved organic carbon and carbon export in the equatorial Pacific Ocean

Intensification of North Pacific intermediate water ventilation during the Younger Dryas

Similar Documents

Abrupt changes of intermediate-water oxygen in the northwestern Pacific during the last 27 kyr

High-resolution IP25-based reconstruction of sea-ice variability in the western North Pacific and Bering Sea during the past 18,000 years

Did the East Pacific rise subduct beneath the North America plate (western Mexico)?

Late quaternary distribution of the Cycladophora davisiana radiolarian species: Reflection of possible ventilation of the North Pacific intermediate water during the Last Glacial Maximum

The destiny of the North Pacific Intermediate Water in the South China Sea

Local origins of interdecadal Pacific variability in the tropical and North Pacific Ocean: evidence from a comparative study of coral oxygen isotope records

Evolution of the basalts from three back-arc basins of southwest Pacific

Modification of North Pacific Intermediate Water around Mixed Water Region

Modeling dissolved organic carbon and carbon export in the equatorial Pacific Ocean

Intensification of North Pacific intermediate water ventilation during the Younger Dryas