Northwest Pacific ice-rafted debris at 38°N reveals episodic ice-sheet change in late Quaternary Northeast Siberia

McCarron, Ambrose; Bigg, Grant R.; Brooks, H. K.; Leng, MJ; Marshall, J. D.; Пономарева, В. В.; Portnyagin, Maxim; Reimer, Paula J.; Rogerson, Mike

doi:10.1016/j.epsl.2020.116650

Cited by 10 publications

(5 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ratio ln Zr/Sr has been used to also infer ice-rafted debris in marine sediment cores (e.g., Hodell et al, 2010). In this study, we interpret the ln Zr/Sr ratio to indicate heavy mineral deposition by winds (Martínez-Garcia et al, 2010) but acknowledge ice-rafted debris could be an additional source for the Late Quaternary (McCarron et al, 2021;St. John & Krissek, 1999).…”

Section: Xrf Proxies Used For Paleoenvironmental/paleoceanographic Ch...mentioning

confidence: 81%

Expanded North Pacific Subtropical Gyre and Heterodyne Expression During the Mid‐Pleistocene

Taylor

Patterson

Lam

et al. 2022

Paleoceanog and Paleoclimatol

View full text Add to dashboard Cite

The Kuroshio Current (KC) and Kuroshio Current Extension (KCE) form a western boundary current as part of the North Pacific Subtropical Gyre. This current plays an important role in regulating weather and climate dynamics in the Northern Hemisphere in part by controlling the delivery of moisture to the lower atmosphere. Previous studies indicate the KCE responded dynamically across glacial and interglacial periods throughout the Pliocene‐Pleistocene. However, the response of the KCE during Pleistocene super‐interglacials has not been examined in detail. We present a ∼2.2 Ma record of X‐ray fluorescence elemental data from Ocean Drilling Program Hole 1207A and employ hierarchical clustering techniques to demonstrate paleoenvironmental changes around the KCE. Time‐frequency analysis identifies significant heterodyne frequencies, which suggests there were nonlinear interactions between high‐latitude and low‐latitude climate regulating expansion and contraction of the North Pacific Subtropical Gyre prior to the onset of the Mid‐Pleistocene Climate Transition (MPT). We observe two periods of elevated ln Ca/Ti, which may represent sustained warmth with northward migrations of the KCE in the northwestern Pacific. These intervals correspond to Marine Isotope Stages 29‐25, 15, and 11‐9 and occur around recent climatic transitions, the MPT and Mid‐Brunhes Event. Northward expansion of the subtropical gyre during these exceptionally warm interglacials would have delivered more heat and moisture to the high latitudes of the northwest Pacific. Furthermore, enhanced evaporation from the warm KCE vented to the lower atmosphere may have preconditioned the Northern Hemisphere for ice volume growth during two of the most recent periods of climate transition.

show abstract

Section: Xrf Proxies Used For Paleoenvironmental/paleoceanographic Ch...mentioning

confidence: 81%

Expanded North Pacific Subtropical Gyre and Heterodyne Expression During the Mid‐Pleistocene

Taylor

Patterson

Lam

et al. 2022

Paleoceanog and Paleoclimatol

View full text Add to dashboard Cite

show abstract

“…In terms of age control, ODP 1208 benefits from having two high‐resolution age models based on oxygen isotopes for the intervals of the Quaternary where CFP‐derived dust flux data exists (This study; Venti & Billups, 2012). Additionally, the core, located at ∼36°N and >1,500 km from the coast of Japan, lies in the path of dust plumes emanating from East Asian deserts (Uno et al., 2009) and is remote enough from land that detrital input from rivers and ice‐rafted debris is minimal (McCarron et al., 2020). The other possible terrigenous component present at ODP 1208 is volcanic material, which could complicate dust reconstructions.…”

Section: Discussionmentioning

confidence: 99%

“…Due to the nature of both near‐surface and deep currents in the Sea of Japan, sites located in this region could be particularly susceptible to sediment redistribution (Hase et al., 1999; Kim et al., 2008; Trusenkova & Ishida, 2005). In addition, many of these sites likely experienced input from lithogenic sources aside from windblown dust during the Quaternary, such as ice‐rafted debris (ODP 882; Haug et al., 1999; McCarron et al., 2020), volcanic material (ODP 885/886, IODP U1430, and IODP U1425; Anderson et al., 2020; Bailey et al., 2011; Lee et al., 2022; Q. Zhang et al., 2020a), —this could be accounted for if specific methods are applied (e.g., Anderson et al., 2020; Lee et al., 2022; Serno et al., 2014; Q. Zhang et al., 2020a)—and riverine input (IODP U1430 and IODP U1425; Anderson et al., 2020; Gallagher et al., 2015; Lee et al., 2022; Shen et al., 2017).…”

Section: Discussionmentioning

confidence: 99%

Evaluating the Drivers of Quaternary Dust Fluxes to the Western North Pacific: East Asian Dustiness and Northern Hemisphere Gustiness

Abell,

Winckler,

Pullen

et al. 2023

Paleoceanog and Paleoclimatol

View full text Add to dashboard Cite

Quantifying variability in, and identifying the mechanisms behind, East Asian dust production and transport across the last several million years is essential for constraining future dust emissions and deposition. Our current understanding of East Asian dust dynamics through the Quaternary is primarily limited to low‐resolution records from the North Pacific Ocean, those from the Chinese Loess Plateau, and paleoenvironmental reconstructions from arid basins. All are susceptible to sediment winnowing and focusing as well as input of poorly constrained or unidentified non‐dust detrital material. To avoid these limitations, we examine high‐resolution, constant flux proxy‐derived dust fluxes from the North Pacific and find evidence for higher glacial dust fluxes in the early Pleistocene compared to the late Pleistocene. Our results suggest decreasing dust transported to the mid‐latitude North Pacific Ocean from eastern Asia across the Pleistocene. This observation is ostensibly at odds with previous dust records from marine sediments and the Chinese Loess Plateau, and with the perception of higher East Asian dust production and transport during the late Pleistocene associated with the amplification of glaciations. We provide three possible scenarios to describe the ∼2700‐ky evolution of eastern Asia glacial dust dynamics, and discuss them in the context of sediment production, availability, and atmospheric circulation. Our data and proposed driving mechanisms not only raise questions about the framework typically used to interpret dust archives from East Asia and the North Pacific Ocean, but also provide a roadmap for hypothesis testing and future work necessary to produce better‐constrained records of paleo‐dust fluxes.This article is protected by copyright. All rights reserved.

show abstract

“…The difference in the values of θ 0 (0.234) and θ 1 (6827.474) is evidence of population expansion in the West Sea, due to the influence of the last glacial age. During this time, there was large-scale iceberg discharge into the Pacific Ocean, and large volumes of freshwater would have been injected into the ocean [ 53 , 54 ]. Therefore, it is possible that major changes have occurred in the Pacific region and in the global climate.…”

Section: Discussionmentioning

confidence: 99%

Population Structure of Finless Porpoise (Neophocaena phocaenoides) Discovered off Coastal Waters, Republic of Korea

Choi

2022

Genes

View full text Add to dashboard Cite

The finless porpoise (Neophocaena phocaenoides Cuvier, 1829) is distributed in the coastal waters of Asia, throughout Indonesia to the east, and as far north as the Taiwan Strait. The finless porpoise has been declared critically endangered by the WWF (World Wide Fund for Nature), and in 2017 was rated vulnerable on the IUCN Red Threatened Species List. Since this species is distributed near the coast and has many interactions with humans, effective conservation of the species requires further studies into their genetic diversity and population. In this study, 45 samples were obtained from bycatch or stranded individuals in the East, South, and West Seas, where Korean porpoises were mainly distributed from 2017–2021. We compared 473 bp mtDNA sequences from the control region. Pairwise fixation indices (FST) revealed that the two populations differed significantly (FST = 0.4557, p = 0.000). In contrast to high levels of genetic differentiation, gene flow was identified as medium levels (Nm of 0.04–0.71). Our data suggest that finless porpoises may have undergone a historic differentiation event, and that finless porpoises in the three regions could be divided into two populations: West and East/South.

show abstract

Northwest Pacific ice-rafted debris at 38°N reveals episodic ice-sheet change in late Quaternary Northeast Siberia

Cited by 10 publications

References 50 publications

Expanded North Pacific Subtropical Gyre and Heterodyne Expression During the Mid‐Pleistocene

Expanded North Pacific Subtropical Gyre and Heterodyne Expression During the Mid‐Pleistocene

Evaluating the Drivers of Quaternary Dust Fluxes to the Western North Pacific: East Asian Dustiness and Northern Hemisphere Gustiness

Population Structure of Finless Porpoise (Neophocaena phocaenoides) Discovered off Coastal Waters, Republic of Korea

Contact Info

Product

Resources

About