Archive data on climate changes and seismic events in glacial clays of Lake Kucherla (Altai region, Russia)

IF 0.8 Q4 GEOCHEMISTRY & GEOPHYSICS

Geodynamics & Tectonophysics Pub Date : 2020-09-23 DOI:10.5800/gt-2020-11-3-0495

A. Darin, G. Chu, Q. Sun, V. Babich, I. Kalugin, T. Markovich, V. S. Novikov, F. Darin, Y. Rakshun

引用次数: 1

Abstract

. Core samples taken from the bottom sediments of the glacial Lake Kucherla (Gorny Altai, Russia) clearly show annual layers represented by glacial clays. In our study, age-depth modeling is based the varve chronology and Cs-137, Pb-210 and C-14 isotope data. Our model is a highly accurate and reliable demonstration of the annual sedimentation history within the past 1400 years. The time series of geochemical indicators of climate change were obtained by synchrotron radiation micro X-ray fluorescence (SR-µXRF) core scanning. Instrumental meteorological observations from 1940 to 2016 were used to construct transfer functions for the average annual temperatures and atmospheric precipitation amounts. A geochemical trace of a catastrophic seismic event, the Mongolian earthquake of 1761, was found in the cross-section of the bottom sediments.

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俄罗斯阿尔泰地区库切拉湖冰川粘土气候变化与地震事件档案资料

．从库切拉冰川湖(戈尔尼阿尔泰，俄罗斯)底部沉积物中提取的岩心样本清楚地显示出以冰川粘土为代表的年层。在我们的研究中，年龄深度建模是基于阀门年代学和Cs-137、Pb-210和C-14同位素数据。我们的模型对过去1400年的年沉积历史进行了高度精确和可靠的论证。通过同步辐射微x射线荧光(SR-µXRF)岩心扫描，获得了气候变化地球化学指标的时间序列。利用1940 - 2016年的仪器气象观测资料，构建了年平均气温和大气降水量的传递函数。在底部沉积物的横截面上发现了1761年蒙古地震这一灾难性地震事件的地球化学痕迹。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geodynamics & Tectonophysics GEOCHEMISTRY & GEOPHYSICS-

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

24 weeks

期刊介绍： The purpose of the journal is facilitating awareness of the international scientific community of new data on geodynamics of continental lithosphere in a wide range of geolchronological data, as well as tectonophysics as an integral part of geodynamics, in which physico-mathematical and structural-geological concepts are applied to deal with topical problems of the evolution of structures and processes taking place simultaneously in the lithosphere. Complex geological and geophysical studies of the Earth tectonosphere have been significantly enhanced in the current decade across the world. As a result, a large number of publications are developed based on thorough analyses of paleo- and modern geodynamic processes with reference to results of properly substantiated physical experiments, field data and tectonophysical calculations. Comprehensive research of that type, followed by consolidation and generalization of research results and conclusions, conforms to the start-of-the-art of the Earth’s sciences.