Cristin-resultat-ID: 1917109
Sist endret: 12. desember 2022, 10:17
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N

Bidragsytere:
  • Anna Pienkowski
  • Katrine Husum
  • Simon T. Belt
  • Ulysses S Ninnemann
  • Denizcan Köseoğlu
  • Dmitry V Divine
  • mfl.

Tidsskrift

Communications Earth & Environment
ISSN 2662-4435
e-ISSN 2662-4435
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 2
Hefte: 1
Artikkelnummer: 124
Open Access

Importkilder

Scopus-ID: 2-s2.0-85116025454

Beskrivelse Beskrivelse

Tittel

Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N

Sammendrag

The cryospheric response to climatic warming responsible for recent Arctic sea ice decline can be elucidated using marine geological archives which offer an important long-term perspective. The Holocene Thermal Maximum, between 10 and 6 thousand years ago, provides an opportunity to investigate sea ice during a warmer-than-present interval. Here we use organic biomarkers and benthic foraminiferal stable isotope data from two sediment cores in the northernmost Barents Sea (>80 °N) to reconstruct seasonal sea ice between 11.7 and 9.1 thousand years ago. We identify the continued persistence of sea-ice biomarkers which suggest spring sea ice concentrations as high as 55%. During the same period, high foraminiferal oxygen stable isotopes and elevated phytoplankton biomarker concentrations indicate the influence of warm Atlantic-derived bottom water and peak biological productivity, respectively. We conclude that seasonal sea ice persisted in the northern Barents Sea during the Holocene Thermal Maximum, despite warmer-than-present conditions and Atlantic Water inflow.

Bidragsytere

Anna Pienkowski

  • Tilknyttet:
    Forfatter
    ved Forskningsavdelingen ved Norsk Polarinstitutt

Katrine Husum

  • Tilknyttet:
    Forfatter
    ved Forskningsavdelingen ved Norsk Polarinstitutt

Simon T. Belt

  • Tilknyttet:
    Forfatter
    ved University of Plymouth

Ulysses Silas Ninnemann

Bidragsyterens navn vises på dette resultatet som Ulysses S Ninnemann
  • Tilknyttet:
    Forfatter
    ved Institutt for geovitenskap ved Universitetet i Bergen

Denizcan Köseoğlu

  • Tilknyttet:
    Forfatter
    ved University of Plymouth
1 - 5 av 10 | Neste | Siste »