气候变化领域集成服务门户(CCPortal): Stable isotopes, core logging data, relative paleointensity, dry bulk density, biogenic opal, CN-data (TC, TOC, CaCO3, TN), element concentrations, and coarse fraction of three sediment cores from the western Bering Sea

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.786307
	Stable isotopes, core logging data, relative paleointensity, dry bulk density, biogenic opal, CN-data (TC, TOC, CaCO3, TN), element concentrations, and coarse fraction of three sediment cores from the western Bering Sea
	Riethdorf; Jan-Rainer; Nürnberg; Dirk; Max; Lars; Tiedemann; Ralf; Gorbarenko; Sergey A; Malakhov; Mikhail I
发布日期	2013-07-18
数据集类型	dataset
英文简介	We used piston cores recovered in the western Bering Sea to reconstruct millennial-scale changes in marine productivity and terrigenous matter supply over the past ~180 kyr. Based on a geochemical multi-proxy approach, our results indicate closely interacting processes controlling marine productivity and terrigenous matter supply comparable to the situation in the Okhotsk Sea. Overall, terrigenous inputs were high, whereas export production was low. Minor increases in marine productivity occurred during intervals of Marine Isotope Stage 5 and interstadials, but pronounced maxima were recorded during interglacials and Termination I. The terrigenous material is suggested to be derived from continental sources on the eastern Bering Sea shelf and to be subsequently transported via sea ice, which is likely to drive changes in surface productivity, terrigenous inputs, and upper-ocean stratification. From our results we propose glacial, deglacial, and interglacial scenarios for environmental change in the Bering Sea. These changes seem to be primarily controlled by insolation and sea-level forcing which affect the strength of atmospheric pressure systems and sea-ice growth. The opening history of the Bering Strait is considered to have had an additional impact. High-resolution core logging data (color b*, XRF scans) strongly correspond to the Dansgaard-Oeschger climate variability registered in the NGRIP ice core and support an atmospheric coupling mechanism of Northern Hemisphere climates.
空间范围	Median Latitude: 57.367867 * Median Longitude: 170.249387 * South-bound Latitude: 53.881667 * West-bound Longitude: 162.089667 * North-bound Latitude: 58.875333 * East-bound Longitude: 170.698833
时间范围	2009-09-09T00:06:00 - 2009-09-22T00:06:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/233571
推荐引用方式 GB/T 7714	Riethdorf,Jan-Rainer,Nürnberg,et al. Stable isotopes, core logging data, relative paleointensity, dry bulk density, biogenic opal, CN-data (TC, TOC, CaCO3, TN), element concentrations, and coarse fraction of three sediment cores from the western Bering Sea.2013-07-18.https://doi.org/10.1594/PANGAEA.786307.