| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6348007 | Global and Planetary Change | 2015 | 11 Pages |
Abstract
The diatom silica isotope record displays large variations in δ18Odiatom from + 27.3Ⱐto + 23.3Ⱐfrom about ~ 4.5 kyr BP until today. A continuous depletion in δ18Odiatom of 4.0Ⱐis observed in the past 4.5 kyr, which is in good accordance with other hemispheric environmental changes (i.e. a summer insolation-driven Mid- to Late Holocene cooling). The overall cooling trend is superimposed by regional hydrological and atmospheric-oceanic changes. These are related to the interplay between Siberian High and Aleutian Low as well as to the ice dynamics in the Sea of Okhotsk. Additionally, combined δ18Odiatom and chironomid interpretations provide new information on changes related to meltwater input to lakes. Hence, this diatom isotope study provides further insight into hydrology and climate dynamics of this remote, rarely investigated area.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Hanno Meyer, Bernhard Chapligin, Ulrike Hoff, Larisa Nazarova, Bernhard Diekmann,