气候变化领域集成服务门户(CCPortal): New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene

CCPortal

DOI	10.1029/2020PA003994
	New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene
	Reilly, Brendan T.; Tauxe, Lisa; Brachfeld, Stefanie; Raymo, Maureen; Bailey, Ian; Hemming, Sidney; Weber, Michael E.; Williams, Trevor; Garcia, Marga; Guitard, Michelle; Martos, Yasmina M.; Perez, Lara F.; Zheng, Xufeng; Armbrecht, Linda; Cardillo, Fabricio G.; Du, Zhiheng; Fauth, Gerson; Glueder, Anna; Gutjahr, Marcus; Hernandez-Almeida, Ivan; Hoem, Frida S.; Hwang, Ji-Hwan; Iizuka, Mutsumi; Kato, Yuji; Kenlee, Bridget; O'Connell, Suzanne; Peck, Victoria; Ronge, Thomas A.; Seki, Osamu; Tripathi, Shubham; Warnock, Jonathan
通讯作者	Reilly, BT (通讯作者)，Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
发表日期	2021
ISSN	2572-4517
EISSN	2572-4525
卷号	36 期号:2
英文摘要	International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea's Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica spanning the last 3.3 Myr. Sites drilled in Dove Basin (U1536/U1537) have well-resolved magnetostratigraphy and a strong imprint of orbital forcing in their lithostratigraphy. All magnetic reversals of the last 3.3 Myr are identified, providing a robust age model independent of orbital tuning. During the Pleistocene, alternation of terrigenous versus diatomaceous facies shows power in the eccentricity and obliquity frequencies comparable to the amplitude modulation of benthic delta O-18 records. This suggests that variations in Dove Basin lithostratigraphy during the Pleistocene reflect a similar history as globally integrated ice volume at these frequencies. However, power in the precession frequencies over the entire similar to 3.3 Myr record does not match the amplitude modulation of benthic delta O-18 records, suggesting Dove Basin contains a unique record at these frequencies. Comparing the position of magnetic reversals relative to local facies changes in Dove Basin and the same magnetic reversals relative to benthic delta O-18 at North Atlantic IODP Site U1308, we demonstrate Dove Basin facies change at different times than benthic delta O-18 during intervals between similar to 3 and 1 Ma. These differences are consistent with precession phase shifts and suggest climate signals with a Southern Hemisphere summer insolation phase were recorded around Antarctica. If Dove Basin lithology reflects local Antarctic ice volume changes, these signals could represent ice sheet precession-paced variations not captured in benthic delta O-18 during the 41-kyr world.
英文关键词	Antarctica; Dove Basin; Iceberg Alley; International Ocean Discovery Program (IODP); magnetostratigraphy; Scotia Sea
语种	英语
WOS研究方向	Geology ; Oceanography ; Paleontology
WOS类目	Geosciences, Multidisciplinary ; Oceanography ; Paleontology
WOS记录号	WOS:000624116800011
来源期刊	PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255186
作者单位	[Reilly, Brendan T.; Tauxe, Lisa] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; [Brachfeld, Stefanie] Montclair State Univ, Earth & Environm Studies, Montclair, NJ USA; [Raymo, Maureen; Hemming, Sidney] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA; [Bailey, Ian] Univ Exeter, Camborne Sch Mines, Penryn Campus, Penryn, Cornwall, England; [Weber, Michael E.] Univ Bonn, Inst Geosci, Bonn, Germany; [Williams, Trevor] Texas A&M Univ, Int Ocean Discovery Program, College Stn, TX USA; [Garcia, Marga] Spanish Inst Oceanog IEO, Oceanog Ctr Cadiz, Cadiz, Spain; [Guitard, Michelle] Univ S Florida, Coll Marine Sci, St Petersburg, FL USA; [Martos, Yasmina M.] NASA, Planetary Magnetospheres Lab, Goddard Space Flight Ctr, Greenbelt, MD USA; [Martos, Yasmina M.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA; [Perez, Lara F.; Peck, Victoria] British Antarctic Survey, Cambridge, England; [Zheng, Xufeng] Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou, Peoples R China; ...
推荐引用方式 GB/T 7714	Reilly, Brendan T.,Tauxe, Lisa,Brachfeld, Stefanie,et al. New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene[J]. 中国科学院西北生态环境资源研究院,2021,36(2).
APA	Reilly, Brendan T..,Tauxe, Lisa.,Brachfeld, Stefanie.,Raymo, Maureen.,Bailey, Ian.,...&Warnock, Jonathan.(2021).New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene.PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY,36(2).
MLA	Reilly, Brendan T.,et al."New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene".PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY 36.2(2021).