A multi-proxy palaeolimnological record of the last 16,600 years from coastal Lake Kushu in northern Japan

Schmidt, Mareike; Leipe, Christian; Becker, Fabian; Goslar, Tomasz; Hoelzmann, Philipp; Mingram, Jens; Müller, Stefanie; Tjallingii, Rik; Wagner, Mayke; Tarasov, Pavel E.

doi:10.1016/j.palaeo.2018.11.010

Cited by 17 publications

(9 citation statements)

References 49 publications

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“…Measurements with a value smaller than or equal to three times the 1-σ error were discarded. Following Schmidt et al [43], the remaining results were analysed using a compositional data approach to manage the consistent sum-constrained model [44] via R [45]. Elements were only processed if the number of values below the limit of detection did not exceed 10% of the respective measurements.…”

Section: Element Concentrationsmentioning

confidence: 99%

“…Unsupervised classification of the sediment properties examined was used to verify stratigraphic delineation conducted during fieldwork. The most recent work of Schmidt et al [43] shows that hierarchical clustering of element concentrations may be used to classify sediment data for stratigraphic delineation and interpretation. Building upon their work, we applied cluster analysis of Manhattan distances performed with Ward's method (e.g., [64]).…”

Section: Sedimentological Datamentioning

confidence: 99%

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On-Site VIS-NIR Spectral Reflectance and Colour Measurements—A Fast and Inexpensive Alternative for Delineating Sediment Layers Quantitatively? A Case Study from a Monumental Bronze Age Burial Mound (Seddin, Germany)

et al. 2020

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Quantitative sediment analyses performed in the laboratory are often used throughout archaeological excavations to critically reflect on-site stratigraphic delineation. Established methods are, however, often time-consuming and expensive. Recent studies suggest that systematic image analysis can objectivise the delineation of stratigraphic layers based on fast quantitative spectral measurements. The presented study examines how these assumptions prevail when compared to modern techniques of sediment analysis. We examine an archaeological cross-section at a Bronze Age burial mound near Seddin (administrative district Prignitz, Brandenburg, Germany), consisting of several layers of construction-related material. Using detailed on-site descriptions supported by quantitatively measured sediment properties as a measure of quality, we compare clustering results of (i) extensive colour measurements conducted with an RGB and a multispectral camera during fieldwork, as well as (ii) selectively sampled sedimentological data and (iii) visible and near infrared (VIS-NIR) hyperspectral data, both acquired in the laboratory. Furthermore, the influence of colour transformation to the CIELAB colour space (Commission Internationale de l’Eclairage) and the possibilities of predicting soil organic carbon (SOC) based on image data are examined. Our results indicate that quantitative spectral measurements, while still experimental, can be used to delineate stratigraphic layers in a similar manner to traditional sedimentological data. The proposed processing steps further improved our results. Quantitative colour measurements should therefore be included in the current workflow of archaeological excavations.

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Section: Element Concentrationsmentioning

confidence: 99%

Section: Sedimentological Datamentioning

confidence: 99%

On-Site VIS-NIR Spectral Reflectance and Colour Measurements—A Fast and Inexpensive Alternative for Delineating Sediment Layers Quantitatively? A Case Study from a Monumental Bronze Age Burial Mound (Seddin, Germany)

et al. 2020

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“…At Deoria Tal, PCA Axis 1 is inferred to primarily reflect variations in detrital influx. The elements most strongly correlated with PCA Axis 1 (K, Ti, Fe, Rb, Sr, Zr, and Th) have been identified has common constituents of detrital-sourced sediment 14 , 58 , 65 – 69 . The grouping of Ti with PCA Axis 1 and the strong Spearman’s correlation coefficients between Ti and Rb (ρ 2 = 0.94), and Zr (ρ 2 = 0.92), further supports the inference that variations in Ti are related to detrital input from the catchment 70 (Figs.…”

Section: Discussionmentioning

confidence: 99%

Hydroclimate change in the Garhwal Himalaya, India at 4200 yr BP coincident with the contraction of the Indus civilization

Niederman

Porinchu

Kotlia

2021

Sci Rep

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High-resolution analysis of a 3.80 m sediment core recovered from Deoria Tal, a mid-elevation lake located at 2393 m a.s.l. in the Garhwal Himalaya, documents long-term and abrupt hydroclimate fluctuations in northern India during the mid- to late Holocene. The sediment chronology, based on ten 14C dates, indicates the core spans 5200 years. Non-destructive, radiological imaging approaches (X-ray fluorescence (XRF), X-ray imaging, and CT scans) were used to assess the response of the lake system to changing hydroclimatic conditions. Variations in elemental concentrations and sediment density evidenced notable hydroclimate change episodes centered at 4850, 4200, and 3100 cal yr BP. Elevated detrital input, greater sediment density, decreased lake ventilation, and lower autochthonous productivity reflects lake deepening between 4350 and 4200 cal yr BP. An abrupt shift in elemental concentrations and sediment density indicated the onset of lake drawdown at 4200 cal yr BP and a negative hydroclimate anomaly between 4200 and 4050 cal yr BP. Lower detrital flux, decreased sediment density, increased oxygenation, and higher autochthonous productivity, reflects a reduction in lake volume between 3200 and 3100 cal yr BP. The potential link between abrupt climate change at 4200 cal yr BP and the contraction of the Indus civilization is explored.

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“…The qXRD and pXRF data were analyzed using a compositional data approach, which allows evaluation of data subjected to a constant‐unit sum (Aitchison, 1982). For statistical analysis, we followed the approach presented in Montero‐Serrano et al (2010), Schmidt et al (2019) and Corminboeuf et al (2021a,b). R software (R Core Team, 2021) was used to perform all statistical analyses.…”

Section: Methodsmentioning

confidence: 99%

A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada)

Rodríguez-Cuicas

Montero‐Serrano

St‐Onge

et al. 2023

J Quaternary Science

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Two composite sedimentary sequences sampled in the ice‐proximal (12CS) and ice‐distal (02CS) areas of Coronation Fjord (Baffin Island, Nunavut, Canada) were investigated in order to reconstruct the effect of climate variability on 600 years of changes in sediment transfer from the eastern Penny Ice Cap (PIC). Detrital proxies, and physical and sedimentological analyses revealed that glacial meltwater discharges led to frequent rapidly deposited layers (RDLs) in ice‐proximal settings. RDLs in ice‐distal settings involved the sudden release of a large quantity of sediment‐laden water during floods probably originating from adjacent fjords with large sandur deltas. Laminated sediments with ice‐rafted debris throughout the Little Ice Age interval in the ice‐proximal environment suggest that colder conditions promoted glacier growth, leading to successive episodes of turbid hyperpycnal meltwater plumes and iceberg calving in Coronation Fjord. Since 1850 ce, the accelerated Coronation retreat in response to modern warming has led to increased sedimentation rates, abrupt mineralogical and grain size proxy variations and more frequent RDLs. Similar trends between the detrital proxies of the ice‐proximal core and Atlantic Multidecadal Oscillation record and Arctic surface air temperature suggest high connectivity between atmospheric and sea surface temperature variations and PIC dynamics over the last 600 years.

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A multi-proxy palaeolimnological record of the last 16,600 years from coastal Lake Kushu in northern Japan

Cited by 17 publications

References 49 publications

On-Site VIS-NIR Spectral Reflectance and Colour Measurements—A Fast and Inexpensive Alternative for Delineating Sediment Layers Quantitatively? A Case Study from a Monumental Bronze Age Burial Mound (Seddin, Germany)

On-Site VIS-NIR Spectral Reflectance and Colour Measurements—A Fast and Inexpensive Alternative for Delineating Sediment Layers Quantitatively? A Case Study from a Monumental Bronze Age Burial Mound (Seddin, Germany)

Hydroclimate change in the Garhwal Himalaya, India at 4200 yr BP coincident with the contraction of the Indus civilization

A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada)

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A multi-proxy palaeolimnological record of the last 16,600 years from coastal Lake Kushu in northern Japan

Cited by 17 publications

References 49 publications

On-Site VIS-NIR Spectral Reflectance and Colour Measurements—A Fast and Inexpensive Alternative for Delineating Sediment Layers Quantitatively? A Case Study from a Monumental Bronze Age Burial Mound (Seddin, Germany)

On-Site VIS-NIR Spectral Reflectance and Colour Measurements—A Fast and Inexpensive Alternative for Delineating Sediment Layers Quantitatively? A Case Study from a Monumental Bronze Age Burial Mound (Seddin, Germany)

Hydroclimate change in the Garhwal Himalaya, India at 4200 yr BP coincident with the contraction of the Indus civilization

A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada)

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A multi-proxy palaeolimnological record of the last 16,600 years from coastal Lake Kushu in northern Japan