Accès libre

Variations of Thermally and Optically Stimulated Luminescence Sensitivity of Loess and Pedocomplex Samples from Southern Tajikistan, Central Asia

Yuetian Li

Yuetian Li

Key Laboratory for Earth Surface Processes, Department of Geography, Peking UniversityBeijing, China
Recherchez cet auteur sur
Sciendo|Google Scholar
Li, Yuetian
 et 
Liping Zhou

Liping Zhou

Key Laboratory for Earth Surface Processes, Department of Geography, Peking UniversityBeijing, China
Recherchez cet auteur sur
Sciendo|Google Scholar
Zhou, Liping
  
31 déc. 2021
Variations of Thermally and Optically Stimulated Luminescence Sensitivity of Loess and Pedocomplex Samples from Southern Tajikistan, Central Asia's Cover Image
À propos de cet article
Article précédent
Article suivant
Citez
Télécharger la couverture
Catégorie d'article: Conference Proceedings of the 5Asia Pacific Luminescence and Electron Spin Resonance Dating Conference October 15–17, 2018, Beijing, China. Guest Editor: Grzegorz Adamiec
Publié en ligne: 31 déc. 2021
Pages: 242 - 252
Reçu: 17 févr. 2019
Accepté: 12 juil. 2019
DOI: https://doi.org/10.1515/geochr-2015-0118
Mots clés
© 2019 Yuetian Li et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

(a) Elevation map showing the loess distribution area in Central Asia and Chinese loess plateau (CLP), main capital cities, and climate driving forces in Asia including EASM (East Asian summer monsoon), EAWM (East Asian winter monsoon), ISM (Indian summer monsoon) and westerlies. (b) Map showing the location of Khonako and Darai Kalon sections in Tajikistan.
(a) Elevation map showing the loess distribution area in Central Asia and Chinese loess plateau (CLP), main capital cities, and climate driving forces in Asia including EASM (East Asian summer monsoon), EAWM (East Asian winter monsoon), ISM (Indian summer monsoon) and westerlies. (b) Map showing the location of Khonako and Darai Kalon sections in Tajikistan.

Fig. 2

Variations of 4–11 μm quartz OSL and 110°C TL luminescence sensitivity, IRSL/[post-IR] OSL ratio, median grain size and frequency-dependent magnetic susceptibility (χfd) for the samples from Khonako (above) and Darai Kalon (below) sections.
Variations of 4–11 μm quartz OSL and 110°C TL luminescence sensitivity, IRSL/[post-IR] OSL ratio, median grain size and frequency-dependent magnetic susceptibility (χfd) for the samples from Khonako (above) and Darai Kalon (below) sections.

Fig. 3

Variations of the OSL and 110°C TL luminescence sensitivity for the different grain size fractions (a and b) and the plots of 11–45 μm and >45 μm quartz OSL sensitivity versus 4–11 μm quartz OSL sensitivity (c). The blue and red dots symbols represent the fraction of >45 μm and 11–45 μm respectively and the blue and red solid lines represent the linear fitting of the data. The black dashed line is 1:1
Variations of the OSL and 110°C TL luminescence sensitivity for the different grain size fractions (a and b) and the plots of 11–45 μm and >45 μm quartz OSL sensitivity versus 4–11 μm quartz OSL sensitivity (c). The blue and red dots symbols represent the fraction of >45 μm and 11–45 μm respectively and the blue and red solid lines represent the linear fitting of the data. The black dashed line is 1:1

Fig. 4

OSL luminescence sensitivity (0–0.64 s) measured after thermal activation for quartz grains of 4–11 μm (a) and >45 μm (b). Normalized sensitivity (normalized by the initial sensitivity) as a function of thermal activation temperature for quartz grains of 4–11 μm (c) and >45 μm (d).
OSL luminescence sensitivity (0–0.64 s) measured after thermal activation for quartz grains of 4–11 μm (a) and >45 μm (b). Normalized sensitivity (normalized by the initial sensitivity) as a function of thermal activation temperature for quartz grains of 4–11 μm (c) and >45 μm (d).

Fig. 5

OSL luminescence sensitivity (0–0.64 s) measured after different cycles of irradiation/bleaching treatment for quartz grains of 4–11 μm (a) and >45 μm (b). Normalized sensitivity (normalized by the initial sensitivity) as a function of increasing irradiation/bleaching cycles for quartz grains of 4–11 μm (c) and >45 μm (d).
OSL luminescence sensitivity (0–0.64 s) measured after different cycles of irradiation/bleaching treatment for quartz grains of 4–11 μm (a) and >45 μm (b). Normalized sensitivity (normalized by the initial sensitivity) as a function of increasing irradiation/bleaching cycles for quartz grains of 4–11 μm (c) and >45 μm (d).
Langue:
Anglais
Périodicité:
1 fois par an
Sujets de la revue:
Géosciences, Géosciences, autres
RSS Feed de la revue