English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Beaufort Gyre (BG) and the Bering Strait inflow (BSI) are\udimportant elements of the Arctic Ocean circulation system and major controls\udon the distribution of Arctic sea ice. We report records of the\udquartz ∕ feldspar and chlorite ∕ illite ratios in three sediment\udcores from the northern Chukchi Sea, providing insights into the long-term\uddynamics of the BG circulation and the BSI during the Holocene. The\udquartz ∕ feldspar ratio, interpreted as a proxy of the BG strength,\udgradually decreased during the Holocene, suggesting a long-term decline in\udthe BG strength, consistent with an orbitally controlled decrease in summer\udinsolation. We propose that the BG rotation weakened as a result of the increasing stability of sea-ice cover at the margins of the Canada Basin,\uddriven by decreasing insolation. Millennial to multi-centennial variability\udin the quartz ∕ feldspar ratio (the BG circulation) is consistent with\udfluctuations in solar irradiance, suggesting that solar activity affected the\udBG strength on these timescales. The BSI approximation by the\udchlorite ∕ illite record, despite a considerable geographic variability,\udconsistently shows intensified flow from the Bering Sea to the Arctic during\udthe middle Holocene, which is attributed primarily to the effect of higher\udatmospheric pressure over the Aleutian Basin. The intensified BSI was\udassociated with decrease in sea-ice concentrations and increase in marine\udproduction, as indicated by biomarker concentrations, suggesting a major\udinfluence of the BSI on sea-ice and biological conditions in the Chukchi Sea.\udMulti-century to millennial fluctuations, presumably controlled by solar\udactivity, were also identified in a proxy-based BSI record characterized by the highest age resolution

Holocene dynamics in the Bering Strait inflow to the Arctic and the Beaufort Gyre circulation based on sedimentary records from the Chukchi Sea