Hoff, Ulrike; Rasmussen, Tine Lander; Stein, Ruediger; Ezat, Mohamed M; Fahl, Kirsten (2016): Total organic carbon, delta13C, biomarker, diatom distributions in sediment core JM11-FI-19PC [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.859992, Supplement to: Hoff, U et al. (2016): Sea ice and millennial-scale climate variability in the Nordic seas 90 ka to present. Nature Communications, 7, 10 pp, https://doi.org/10.1038/ncomms12247
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
In the light of rapidly diminishing sea ice cover in the Arctic during the present atmospheric warming, it is imperative to study the distribution of sea ice in the past in relation to rapid climate change. Here we focus on glacial millennial scale climatic events (Dansgaard/Oeschger events) using the new sea ice proxy IP25 in combination with phytoplankton proxy data and quantification of diatom species in a record from the SE Norwegian Sea. We demonstrate that expansion and retreat of sea ice varied consistently in pace with the rapid climate changes 90 ka to present, and with this present the first IP25 sea ice proxy record resolving the D/O cyclicity going back in time into Marine Isotope Stage 5a. Sea ice retreated abruptly at the start of warm interstadials, but spread rapidly during the cooling phase of the interstadials and became near-perennial and perennial during cold stadials and Heinrich events, respectively. Low salinity surface water and the sea ice edge spread to the Greenland-Scotland Ridge, and during the largest Heinrich events, probably far into the Atlantic Ocean.
Related to:
Hoff, Ulrike; Rasmussen, Tine Lander; Stein, Ruediger; Ezat, Mohamed M; Fahl, Kirsten (2016): (Tab S3) Age determination of sediment core JM11-FI-19PC. PANGAEA, https://doi.org/10.1594/PANGAEA.863447
Coverage:
Latitude: 62.832830 * Longitude: -3.867170
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 8.01 m
Event(s):
JM11-FI-19PC * Latitude: 62.832830 * Longitude: -3.867170 * Elevation: -1179.0 m * Recovery: 11.09 m * Location: Norwegian Sea * Campaign: JM11 * Basis: Jan Mayen * Method/Device: Piston corer (PC)
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3773 data points
Download Data
View dataset as HTML (shows only first 2000 rows)