Paleoceanography of the eastern equatorial Pacific over the past 4 million years and the geologic origins of modern Galápagos upwelling

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• 作者：Kristopher B. Karnauskas^a ; ^b ; ^{kristopher.karnauskas@colorado.edu} ; Eric Mittelstaedt^c ; Raghu Murtugudde^d
• 关键词：paleoclimate ; geology ; Galapagos ; climate ; oceanography ; upwelling
• 刊名：Earth and Planetary Science Letters
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：460
• 期：Complete
• 页码：22-28
• 全文大小：1020 K
• 卷排序：460

文摘

Paleo records show the modern SST gradient across the Galápagos emerged ∼1.6 Ma. Models confirm emergence of SST gradient is due to Galápagos blocking undercurrent. Implications for geological and biogeographical mysteries are discussed. Studies of Pliocene Pan-Pacific SST gradient should consider geologic forcing. Results support gradual development of the modern Pan-Pacific SST gradient.