FN Archimer Export Format
PT J
TI Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography
BT 
AF MOFFITT, Sarah E.
   MOFFITT, Russell A.
   SAUTHOFF, Wilson
   DAVIS, Catherine V.
   HEWETT, Kathryn
   HILL, Tessa M.
AS 1:1,2;2:3;3:4;4:1,4;5:5;6:1,4;
FF 1:;2:;3:;4:;5:;6:;
C1 Univ Calif Davis, Bodega Marine Lab, Bodega Bay, CA 94923 USA.
   Univ Calif Davis, Grad Grp Ecol, Davis, CA 95616 USA.
   Marine Conservat Inst, Glen Ellen, CA USA.
   Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA.
   Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA.
C2 UNIV CALIF DAVIS, USA
   UNIV CALIF DAVIS, USA
   MARINE CONSERVAT INST, USA
   UNIV CALIF DAVIS, USA
   UNIV CALIF DAVIS, USA
IN DOAJ
IF 3.057
TC 76
UR https://archimer.ifremer.fr/doc/00353/46422/46151.pdf
LA English
DT Article
CR MD 126 / MONA
BO Marion Dufresne
AB Climate-driven Oxygen Minimum Zone (OMZ) expansions in the geologic record provide an opportunity to characterize the spatial and temporal scales ofOMZ change. Here we investigate OMZ expansion through the global- scale warming event of the most recent deglaciation (18- 11 ka), an event with clear relevance to understanding modern anthropogenic climate change. Deglacial marine sediment records were compiled to quantify the vertical extent, intensity, surface area and volume impingements of hypoxic waters upon continental margins. By integrating sediment records (183-2,309 meters below sea level; mbsl) containing one or more geochemical, sedimentary or microfossil oxygenation proxies integrated with analyses of eustatic sea level rise, we reconstruct the timing, depth and intensity of seafloor hypoxia. The maximum vertical OMZ extent during the deglaciation was variable by region: Subarctic Pacific (similar to 600-2,900 mbsl), California Current (similar to 330-1,500 mbsl), Mexico Margin (similar to 330-830 mbsl), and the Humboldt Current and Equatorial Pacific (similar to 110-3,100 mbsl). The timing ofOMZ expansion is regionally coherent but not globally synchronous. Subarctic Pacific and California Current continental margins exhibit tight correlation to the oscillations of Northern Hemisphere deglacial events (Termination IA, Bolling-Allerod, Younger Dryas and Termination IB). Southern regions (Mexico Margin and the Equatorial Pacific and Humboldt Current) exhibit hypoxia expansion prior to Termination IA (similar to 14.7 ka), and no regional oxygenation oscillations. Our analyses provide new evidence for the geographically and vertically extensive expansion of OMZs, and the extreme compression of upper-ocean oxygenated ecosystems during the geologically recent deglaciation.
PY 2015
PD JAN
SO Plos One
SN 1932-6203
PU Public Library Science
VL 10
IS 1
UT 000348732100013
DI 10.1371/journal.pone.0115246
ID 46422
ER

EF