Articles with "proxy" as a keyword



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Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records

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Published in 2020 at "Journal of Quaternary Science"

DOI: 10.1002/jqs.3245

Abstract: Holocene temperature proxy records are commonly used in quantitative synthesis and model‐data comparisons. However, comparing correlations between time series from records collected in proximity to one another with the expected correlations based on climate model… read more here.

Keywords: holocene; proxy records; last glacial; spatial correlations ... See more keywords
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Multi-view Clustering with Latent Low-rank Proxy Graph Learning

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Published in 2021 at "Cognitive Computation"

DOI: 10.1007/s12559-021-09889-8

Abstract: With advances in information acquisition technologies, multi-view data are increasing dramatically in a variety of real-world applications, whereas such data is usually corrupted by noises and outliers. Many existing multi-view graph clustering (MVGC) methods usually… read more here.

Keywords: low rank; multi view; proxy; view ... See more keywords
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Coral Li/Mg thermometry: Caveats and constraints

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Published in 2019 at "Chemical Geology"

DOI: 10.1016/j.chemgeo.2019.03.038

Abstract: Abstract The coral Li/Mg temperature proxy is revisited through an in-depth trace element analysis of scleractinians collected live from tropical to polar environments. The dataset consists of Li/Ca, Mg/Ca, Sr/Ca and Li/Mg ratios from 64… read more here.

Keywords: organic matter; coral thermometry; temperature; proxy ... See more keywords
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An experimental evaluation of the use of Δ13C as a proxy for palaeoatmospheric CO2

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Published in 2019 at "Geochimica et Cosmochimica Acta"

DOI: 10.1016/j.gca.2018.12.026

Abstract: Abstract Understanding changes in atmospheric CO2 over geological time via the development of well constrained and tested proxies is of increasing importance within the Earth sciences. Recently a new proxy (identified as the C3 proxy)… read more here.

Keywords: co2; use 13c; proxy; 13c proxy ... See more keywords
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An assessment of P speciation and P:Ca proxy calibration in coral cores from Singapore and Bali

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Published in 2019 at "Geochimica et Cosmochimica Acta"

DOI: 10.1016/j.gca.2019.09.024

Abstract: Abstract Phosphorus (P) in corals has shown potential as a proxy for dissolved inorganic phosphate (DIP) in seawater, but additional investigations are needed to understand its incorporation mechanism, down-core applicability, and sensitivity, especially in oligotrophic… read more here.

Keywords: singapore bali; dip; cores singapore; seawater dip ... See more keywords
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Magnetic susceptibility as a pedogenic proxy for grouping of geochemical transects in landscapes

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Published in 2019 at "Journal of Applied Geophysics"

DOI: 10.1016/j.jappgeo.2019.06.017

Abstract: Magnetic susceptibility (χ lf) is a sensitive, fast, and accurate technique to detect soil pedogenic processes and features, and can improve understanding of soil-forming factors. The aim of this study was to determine catenary groupings… read more here.

Keywords: geochemical segments; magnetic susceptibility; susceptibility; soil ... See more keywords
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Qualitative versus quantitative external information for proxy vector autoregressive analysis

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Published in 2021 at "Journal of Economic Dynamics and Control"

DOI: 10.1016/j.jedc.2021.104118

Abstract: Abstract A major challenge for proxy vector autoregressive analysis is the construction of a suitable external instrument variable or proxy for identifying a shock of interest. Some authors construct sophisticated proxies that account for the… read more here.

Keywords: proxy vector; proxy; vector autoregressive; autoregressive analysis ... See more keywords
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Multiple Proxy Estimates of Atmospheric CO2From an Early Paleocene Rainforest

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Published in 2018 at "Paleoceanography and Paleoclimatology"

DOI: 10.1029/2018pa003356

Abstract: Proxy estimates of atmospheric CO2 are necessary to reconstruct Earth’s climate history. Confidence in paleo-CO2 estimates can be increased by comparing results from multiple proxies at a single site, but so far this strategy has… read more here.

Keywords: early paleocene; proxy estimates; co2; ppm ... See more keywords
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Benthic Foraminiferal Mn/Ca as Low‐Oxygen Proxy in Fjord Sediments

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Published in 2023 at "Global Biogeochemical Cycles"

DOI: 10.1029/2023gb007690

Abstract: Fjord systems are typically affected by low‐oxygen conditions, which are increasing in extent and severity, forced by ongoing global changes. Fjord sedimentary records can provide high temporal resolution archives to aid our understanding of the… read more here.

Keywords: benthic foraminiferal; low oxygen; proxy; fjord ... See more keywords

Unsigned magnetic flux proxy from solar optical intensity spectra

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Published in 2023 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1343

Abstract: The photospheric unsigned magnetic flux has been shown to be highly correlated with radial velocity (RV) variations caused by solar surface activity. This activity indicator is therefore a prime candidate to unlock the potential of… read more here.

Keywords: intensity spectra; unsigned magnetic; proxy; activity ... See more keywords
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Feasibility of Proxy-Reported EQ-5D-3L-Y and Its Agreement in Self-reported EQ-5D-3L-Y for Patients With Adolescent Idiopathic Scoliosis.

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Published in 2020 at "Spine"

DOI: 10.1097/brs.0000000000003431

Abstract: STUDY DESIGN Prospective cohort study. OBJECTIVE To compare feasibility of self-reported and proxy-reported youth version of EuroQoL Five-Dimension Three-Level Questionnaire (EQ-5D-3L-Y), to estimate the agreement of health outcome between patients with adolescent idiopathic scoliosis (AIS)… read more here.

Keywords: proxy reported; agreement; feasibility; self reported ... See more keywords