Study of Late Quaternary temperature variations using stable isotopes in the southeastern part of the Caspian Sea

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BAGHERI HOSSEIN

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Journal Paper

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Journal: Journal of Oceanography Year:2020 | Volume:11 | Issue:43 Page(s): 89-105

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Information Journal Paper

Title

Study of Late Quaternary temperature variations using stable isotopes in the southeastern part of the Caspian Sea

Author(s)

BAGHERI HOSSEIN | Issue Writer Certificate

Keywords

Caspian Sea

Core

Stable Isotopes

Paleoclimate

Abstract

In the present study depositional temperature and consequently major climatic changes are investigated in the Southeastern part of the Caspian Sea using oxygen and carbon Stable Isotopes. For this purpose, two sediment Cores (K, N1) with lengths of 170 and 712 cm were collected from eastern and southern parts of Gorgan Bay. The paleotemperature was obtained based on mass spectrometry analysis of sediment samples. The range of oxygen (δ 18O)and carbon isotope (δ 13C) in the K1 Core varied between 4. 04-1. 90‰ (mean 3. 26 ‰ ) and-2. 66 ‰ to-1. 73 (mean 2. 21‰ ) respectively. Whereas, in N1 Core fluctuation of δ 18O, δ 13C was between-4. 22 to-1. 17‰ and 2. 66 to-0. 94‰ with a mean of 3. 34 and-2. 11 ‰ correspondingly. Based on the results of 14C age and Stable Isotopes 15 centigrade changes in temperature have occurred during about 22, 000 years, Accordingly, 8 warm and cold periods were identified, which the coldest period being the last glacial maximum (Wurm) with a temperature of 13. 7° C. Furthermore the highest temperatures related to the pre-glacial and the present periods (about 27-27. 4 ° C). Moreover the sedimentology and magnetic susceptibility data confirmed the above results.

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APA: Copy

BAGHERI, HOSSEIN. (2020). Study of Late Quaternary temperature variations using stable isotopes in the southeastern part of the Caspian Sea. JOURNAL OF OCEANOGRAPHY, 11(43 ), 89-105. SID. https://sid.ir/paper/952070/en

Vancouver: Copy

BAGHERI HOSSEIN. Study of Late Quaternary temperature variations using stable isotopes in the southeastern part of the Caspian Sea. JOURNAL OF OCEANOGRAPHY[Internet]. 2020;11(43 ):89-105. Available from: https://sid.ir/paper/952070/en

IEEE: Copy

HOSSEIN BAGHERI, “Study of Late Quaternary temperature variations using stable isotopes in the southeastern part of the Caspian Sea,” JOURNAL OF OCEANOGRAPHY, vol. 11, no. 43 , pp. 89–105, 2020, [Online]. Available: https://sid.ir/paper/952070/en

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