Scanning Hyperspectral Imaging for In Situ Biogeochemical Analysis of Lake Sediment Cores: Review of Recent Developments

Zander, Paul D.; Wienhues, Giulia; Grosjean, Martin (2022). Scanning Hyperspectral Imaging for In Situ Biogeochemical Analysis of Lake Sediment Cores: Review of Recent Developments. Journal of imaging, 8(3), p. 58. MDPI 10.3390/jimaging8030058

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Hyperspectral imaging (HSI) in situ core scanning has emerged as a valuable and novel tool for rapid and non-destructive biogeochemical analysis of lake sediment cores. Variations in sediment composition can be assessed directly from fresh sediment surfaces at ultra-high-resolution (40–300 μm measurement resolution) based on spectral profiles of light reflected from sediments in visible, near infrared, and short-wave infrared wavelengths (400–2500 nm). Here, we review recent methodological developments in this new and growing field of research, as well as applications of this technique for paleoclimate and paleoenvironmental studies. Hyperspectral imaging of sediment cores has been demonstrated to effectively track variations in sedimentary pigments, organic matter, grain size, minerogenic components, and other sedimentary features. These biogeochemical variables record information about past climatic conditions, paleoproductivity, past hypolimnetic anoxia, aeolian input, volcanic eruptions, earthquake and flood frequencies, and other variables of environmental relevance. HSI has been applied to study seasonal and inter-annual environmental variability as recorded in individual varves (annually laminated sediments) or to study sedimentary records covering long glacial–interglacial time-scales (>10,000 years).

Item Type:

Journal Article (Review Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Paleolimnology
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography

UniBE Contributor:

Zander, Paul David; Wienhues, Giulia Luise and Grosjean, Martin

Subjects:

500 Science > 550 Earth sciences & geology

ISSN:

2313-433X

Publisher:

MDPI

Funders:

[4] Swiss National Science Foundation

Language:

English

Submitter:

Paul David Zander

Date Deposited:

10 Mar 2022 15:45

Last Modified:

10 Mar 2022 15:45

Publisher DOI:

10.3390/jimaging8030058

BORIS DOI:

10.48350/166078

URI:

https://boris.unibe.ch/id/eprint/166078

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