Pulses of enhanced North Pacific Intermediate Water ventilation from the Okhotsk Sea and Bering Sea during the last deglaciation

Max, Lars; Lembke‐Jene, Lester; Riethdorf, Jan-Rainer; Tiedemann, Ralf; Nürnberg, Dirk; Kühn, Hartmut; Mackensen, Andreas

doi:10.5194/cp-10-591-2014

Cited by 112 publications

(129 citation statements)

References 60 publications

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“…The length of the core is 467 cm. In order to establish the age model of core 41-2, we also analyzed paramagnetic magnetization and chlorin content in core 12KL (53 • 59 N, 162 • 23 E), which has been dated well by Max et al (2012Max et al ( , 2014 (Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

“…All measured AMS 14 C data were calibrated by Calib 6.0 (Stuiver and Reimer, 1993) with Marine13 calibration curve (Reimer et al, 2013) with a surface water reservoir ages of 900 years (Max et al, 2014). In the case of using benthic foraminifera for dating, we accept that the difference in paired benthic-planktic foraminifera ages equals 1400 years, based on unpublished data and total regional results of Max et al (2014). All radiocarbon ages were converted into calibrated 1σ calendar age.…”

Section: In Situ X-ray Fluorescence Core Scanningmentioning

confidence: 99%

“…core SO-201-12KL (hereinafter 12KL) (Max et al, 2012(Max et al, , 2014. Using robust age controls, we establish a tight linkage between the centennial events with higher productivity in the NW Pacific and the sub-interstadial strengthened East Asian summer monsoon (EASM) expressed in cave stalagmite δ 18 O records.…”

Section: Introductionmentioning

confidence: 99%

“…When using benthic foraminifera for AMS 14 C dating on the cores, an age difference of 1400 years is taken between coexisting benthic and planktic foraminifera ages (Max et al, 2014).…”

Section: Radiocarbon Dating (Ams 14 C)mentioning

confidence: 99%

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Centennial to millennial climate variability in the far northwestern Pacific (off Kamchatka) and its linkage to the East Asian monsoon and North Atlantic from the Last Glacial Maximum to the early Holocene

Gorbarenko¹,

Shi²,

Malakhova³

et al. 2017

Clim. Past

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Abstract. High-resolution reconstructions based on productivity proxies and magnetic properties of core LV63-41-2 (off Kamchatka) reveal prevailing centennial productivity/climate variability in the northwestern (NW) Pacific from the Last Glacial Maximum (LGM) to the early Holocene (EH). The age model of the core is established by AMS 14 C dating and by projections of AMS 14 C data of the nearby core SO-201-12KL through correlation of the productivity proxies and relative paleomagnetic intensity. The resulting sequence of centennial productivity increases/climate warming events in the NW Pacific occurred synchronously with the East Asian summer monsoon (EASM) sub-interstadials during the LGM (four events), Heinrich Event 1 (HE1) (four events), Bølling-Allerød (B/A) warming (four events), and over the EH (four events). Remarkable similarity of the sequence of the NW Pacific increased-productivity events with the EASM sub-interstadials over the LGM-HE1 implies that the Siberian High is a strong and common driver. The comparison with the δ 18 O record from Antarctica suggests that another mechanism associated with the temperature gradient in the Southern Hemisphere may also be responsible for the EASM/NW Pacific centennial events over the LGM-HE1. During the B/A warming and resumption of the Atlantic Meridional Overturning Circulation (AMOC), clear synchronicity between the NW Pacific, EASM and Greenland sub-interstadials was mainly controlled by changes in the atmospheric circulation. During the EH the linkages between solar forcing, ocean circulation, and climate changes likely control the synchronicity of abrupt climate changes in the NW Pacific and North Atlantic. The sequence of centennial events recorded in this study is a persistent regional feature during the LGM-EH, which may serve as a template in high-resolution paleoceanography and sediment stratigraphy in the NW Pacific.

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Section: Methodsmentioning

confidence: 99%

Section: In Situ X-ray Fluorescence Core Scanningmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…When using benthic foraminifera for AMS 14 C dating on the cores, an age difference of 1400 years is taken between coexisting benthic and planktic foraminifera ages (Max et al, 2014).…”

Section: Radiocarbon Dating (Ams 14 C)mentioning

confidence: 99%

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Centennial to millennial climate variability in the far northwestern Pacific (off Kamchatka) and its linkage to the East Asian monsoon and North Atlantic from the Last Glacial Maximum to the early Holocene

Gorbarenko¹,

Shi²,

Malakhova³

et al. 2017

Clim. Past

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“…Most of the compiled records for the Indian, Pacific and Southern oceans come from sediment cores recovered on continental margins, because a part of the seafloor in the open ocean is deeper than the carbonate compensation depth in these basins (Berger and Winterer, 1974), and the sedimentation rate is particularly low in the large oligotrophic areas of the open ocean. This lack of suitable core sites constitutes a critical limitation for the documentation of the past open-ocean circulation and mechanisms affecting the entire Indian and Pacific basins, such as ENSO, latitudinal migrations of the ITCZ, and fluctuations in the thermohaline circulation, with possible formation of past North Pacific intermediate and deep water (Mix et al, 1999;Ahagon et al, 2003;Max et al, 2014) and storage of carbon in the Southern Ocean (Skinner et al, 2010;Burke and Robinson, 2011). Vast areas remain virtually undocumented in the Indian, Pacific and Southern oceans.…”

Section: Geographical Distributionmentioning

confidence: 99%

Water and carbon stable isotope records from natural archives: a new database and interactive online platform for data browsing, visualizing and downloading

et al. 2016

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Abstract. Past climate is an important benchmark to assess the ability of climate models to simulate key processes and feedbacks. Numerous proxy records exist for stable isotopes of water and/or carbon, which are also implemented inside the components of a growing number of Earth system model. Model-data comparisons can help to constrain the uncertainties associated with transfer functions. This motivates the need of producing a comprehensive compilation of different proxy sources. We have put together a global database of proxy records of oxygen (δ 18 O), hydrogen (δD) and carbon (δ 13 C) stable isotopes from different archives: ocean and lake sediments, corals, ice cores, speleothems and tree-ring cellulose. Source records were obtained from the georeferenced open access PANGAEA and NOAA libraries, complemented by additional data obtained from a literature survey. About 3000 source records were screened for chronological information and temporal resolution of proxy records. Altogether, this database consists of hundreds of dated δ 18 O, δ 13 C and δD records in a standardized simple text format, complemented with a metadata Excel catalog. A quality control flag was implemented to describe age markers and inform on chronological uncertainty. This compilation effort highlights the need to homogenize and structure the format of datasets and chronological information as well as enhance the distribution of published datasets that are currently highly fragmented and scattered. We also provide an online portal based on the records included in this database with an intuitive and interactive platform (http://climateproxiesfinder.ipsl.fr/), allowing one to easily select, visualize and download subsets of the homogeneously formatted records that constitute this database, following a choice of search criteria, and to upload new datasets. In the last part, we illustrate the type of application allowed by our database by comparing several key periods highly investigated by the paleoclimate community.

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Deep water exchanges between the South China Sea and the Pacific since the last glacial period

Wan

Jian

2014

Paleoceanography

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Deep ocean circulation is widely considered as one of the important factors for increasing CO 2 concentration and decreasing radiocarbon activity (Δ 14 C) of the atmosphere during the last deglaciation. The AMS 14 C ages of benthic and planktonic foraminifers from 18 samples of Core MD05-2904 (water depth of 2066 m) in the northern South China Sea (SCS) and 15 samples of Core MD05-2896 (water depth of 1657 m) in the southern SCS were analyzed in this study for reconstructing the intrabasin deep oceanic processes and hence exploring the deep water exchanges between the SCS and the Pacific since the last glacial period. The results show that during the Holocene the average apparent ventilation age of deep water was younger in the southern SCS (~1350 years) than in the northern SCS (~1850 years) due to relatively strong vertical mixing and advection, consistent with modern observations. However, during the last glacial period and deglaciation the deep water was older in the southern SCS (~2050 years and~1800 to 1200 years, respectively) than in the northern SCS (~1600 years and~670 years, respectively), indicating reduced deep mixing and advection. Moreover, the northern SCS deep water was significantly younger during the last deglaciation than during the Holocene and the last glacial period, implying the existence of northern sourced newly formed and relatively young North Pacific deep water. Our records do not support the intrusion of anomalously 14 C-depleted deep water to the middepth of the low-latitude western Pacific and the SCS during the "Mystery Interval" (17.5-14.5 kyr B.P.).

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Pulses of enhanced North Pacific Intermediate Water ventilation from the Okhotsk Sea and Bering Sea during the last deglaciation

Cited by 112 publications

References 60 publications

Centennial to millennial climate variability in the far northwestern Pacific (off Kamchatka) and its linkage to the East Asian monsoon and North Atlantic from the Last Glacial Maximum to the early Holocene

Centennial to millennial climate variability in the far northwestern Pacific (off Kamchatka) and its linkage to the East Asian monsoon and North Atlantic from the Last Glacial Maximum to the early Holocene

Water and carbon stable isotope records from natural archives: a new database and interactive online platform for data browsing, visualizing and downloading

Deep water exchanges between the South China Sea and the Pacific since the last glacial period

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