Arid
DOI10.1016/S0277-3791(00)00184-0
Orbital forcing of dust supply to the North Canary Basin over the last 250 kyr
Moreno, A; Targarona, J; Henderiks, J; Canals, M; Freudenthal, T; Meggers, H
通讯作者Canals, M
来源期刊QUATERNARY SCIENCE REVIEWS
ISSN0277-3791
出版年2001
卷号20期号:12页码:1327-1339
英文摘要

The Canary Basin lies in a region of strong interaction between the atmospheric and ocean circulation systems: Trade winds drive seasonal coastal upwelling and dust storm outbreaks from the neighbouring Sahara desert are the major source of terrigenous sediment. To investigate the forcing mechanisms for dust input and wind strength in the North Canary Basin, the temporal pattern of variability of sedimentological and geochemical proxy records has been analysed in two sediment cores between latitudes 30 degrees 30 ’N and 31 degrees 40 ’N. Spectral analysis of the dust proxy records indicates that insolation changes related to eccentricity and procession are the main periods of temporal variation in the record. Si/Al and grain-size of the terrigenous Fraction show an increase in glacial-interglacial transitions while Al concentration and Fe/Al ratio are both in phase with minima in the precessional index. Hence, the results obtained show that the wind strength was intensified at Terminations. At times of maxima of Northern Hemisphere seasonal insolation, when the African monsoon was enhanced, the North Canary Basin also received higher dust input. This result suggests that the moisture brought by the monsoon may have increased the availability of dust in the source region. (C) 2001 Elsevier Science Ltd. All rights reserved.


类型Article
语种英语
国家Spain ; Switzerland ; Germany
收录类别SCI-E
WOS记录号WOS:000169541800004
WOS关键词TROPICAL ATLANTIC ; DEEP-SEA ; GLACIAL MAXIMUM ; EQUATORIAL ATLANTIC ; CLIMATIC CHANGES ; AFRICAN CLIMATE ; POLLEN RECORDS ; WIND REGIMES ; ARABIAN SEA ; FRESH-WATER
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/141693
作者单位(1)Univ Barcelona, Dept Estratigrafia & Paleontol, Grup Recerca Consolidat Geociencies Marines, Campus Pedralbes, E-08071 Barcelona, Spain;(2)Swiss Fed Inst Technol, Inst Geol, CH-8092 Zurich, Switzerland;(3)Univ Bremen, FB Geowissensch, D-28359 Bremen, Germany
推荐引用方式
GB/T 7714
Moreno, A,Targarona, J,Henderiks, J,et al. Orbital forcing of dust supply to the North Canary Basin over the last 250 kyr[J],2001,20(12):1327-1339.
APA Moreno, A,Targarona, J,Henderiks, J,Canals, M,Freudenthal, T,&Meggers, H.(2001).Orbital forcing of dust supply to the North Canary Basin over the last 250 kyr.QUATERNARY SCIENCE REVIEWS,20(12),1327-1339.
MLA Moreno, A,et al."Orbital forcing of dust supply to the North Canary Basin over the last 250 kyr".QUATERNARY SCIENCE REVIEWS 20.12(2001):1327-1339.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Moreno, A]的文章
[Targarona, J]的文章
[Henderiks, J]的文章
百度学术
百度学术中相似的文章
[Moreno, A]的文章
[Targarona, J]的文章
[Henderiks, J]的文章
必应学术
必应学术中相似的文章
[Moreno, A]的文章
[Targarona, J]的文章
[Henderiks, J]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。