Experiencing new perspectives in the application of reflectance spectroscopy in loess research

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F20%3A00511829" target="_blank" >RIV/68145535:_____/20:00511829 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1040618219307852" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1040618219307852</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.quaint.2019.09.035" target="_blank" >10.1016/j.quaint.2019.09.035</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experiencing new perspectives in the application of reflectance spectroscopy in loess research

Popis výsledku v původním jazyce

Diffuse reflectance spectroscopy (DRS) parameters, such as the redness index and hematite/goethite ratios are popular in the study of loess-paleosol sequences. The suggested parameters, however, have their limitations: only some parts of the whole reflectance spectrum are being used, and the spectra of some important components may be excluded from the analysis.nA mathematical statistical method, hierarchical cluster analysis, was applied to the loess-paleosol succession at Malá nad Hronom (Slovak Republic) in order to characterize the entire reflectance spectrum and to classify sediment groups. The sedimentary units were classified into seven different cluster groups such as sediments, weak and well-developed paleosols. The distribution of the spectral features in the reflectance spectra was located by using the key-wavelength, provided by the Wilk's lambda analysis. The key-minerals, which play an important role in the classification, were determined by characteristic extrema in the second derivative of reflectance spectra of the seven reference minerals (hematite, goethite, muscovite, illite, montmorillonite, kaolinite and calcite).nMineral groups influence certain wavelengths within the measured range, therefore curve sections modified by individual minerals only in a few cases. The mentioned mineral groups refer to characteristics of the formation environment and to climate change during the Pleistocene.n

Název v anglickém jazyce

Experiencing new perspectives in the application of reflectance spectroscopy in loess research

Popis výsledku anglicky

Diffuse reflectance spectroscopy (DRS) parameters, such as the redness index and hematite/goethite ratios are popular in the study of loess-paleosol sequences. The suggested parameters, however, have their limitations: only some parts of the whole reflectance spectrum are being used, and the spectra of some important components may be excluded from the analysis.nA mathematical statistical method, hierarchical cluster analysis, was applied to the loess-paleosol succession at Malá nad Hronom (Slovak Republic) in order to characterize the entire reflectance spectrum and to classify sediment groups. The sedimentary units were classified into seven different cluster groups such as sediments, weak and well-developed paleosols. The distribution of the spectral features in the reflectance spectra was located by using the key-wavelength, provided by the Wilk's lambda analysis. The key-minerals, which play an important role in the classification, were determined by characteristic extrema in the second derivative of reflectance spectra of the seven reference minerals (hematite, goethite, muscovite, illite, montmorillonite, kaolinite and calcite).nMineral groups influence certain wavelengths within the measured range, therefore curve sections modified by individual minerals only in a few cases. The mentioned mineral groups refer to characteristics of the formation environment and to climate change during the Pleistocene.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Quaternary International

ISSN

1040-6182

e-ISSN

—

Svazek periodika

552

Číslo periodika v rámci svazku

June 2020

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

36-49

Kód UT WoS článku

000572270600005

EID výsledku v databázi Scopus

2-s2.0-85073027815