This data is the chronological, magnetic, grain size and bulk density data of Zhouqu (ZQ) loess paleosol sequence in the eastern Tibetan Plateau (TP). We measured the magnetic susceptibility, grain size and bulk density data of the profile at 5 cm intervals. All the experimental analysis was completed at the Key Laboratory of Western China's Environmental Systems (Ministry of Education), Lanzhou University, China. The OSL ages were determined by an automated Risø TL/OSL DA-20 reader. The magnetic susceptibility was measured by Bartington MS2 magnetic susceptibility meter; The grain size data were measured by a Malvern Mastersizer 2000 laser diffractometer; The bulk density data were determined by according to the oil-soaked method; The data set show the variation characteristics of magnetic susceptibility, grain size and bulk density of loess sequence in the eastern TP since the last glacial period, which plays an important role in studying the paleoenvironment, paleoclimate, dust accumulation history and its relationship with the surrounding atmospheric circulation in the eastern TP.
YANG Shengli, XIA Dunsheng, CHEN Zixuan, LI Qiong
This data is the chronological, grain size and bulk density data of loess-paleosol sequence in Wenchuan (WCH) in the eastern Tibetan Plateau. We measured the median grain size and bulk density data of the profile (10m) at intervals of 2.5cm and 5cm respectively. The OSL dating experiment was carried out in the Luminescence Dating Laboratory of the Key Laboratory of Western China’s Environmental Systems (Ministry of Education) in Lanzhou University. AMS 14C measurements were carried out at Peking University. The experimental analysis of environmental indicators was also completed at the Key Laboratory of Western China’s Environmental Systems (Ministry of Education) in Lanzhou University. The OSL ages were determined by an automated Risø TL/OSL DA-20 reader. The grain size data were measured by a Malvern Mastersizer 2000 laser diffractometer; the bulk density data were determined by the oil-soaked method. This data provides the detailed chronological data of loess-paleosol sequence and the variation characteristics of grain size and bulk density since the last glacial period in the eastern Tibetan Plateau, and provides an important data reference for understanding paleoclimate evolution and dust accumulation history in the eastern Tibetan Plateau.
YANG Shengli, LIU Li, XIA Dunsheng, CHEN Zixuan
The water vapor isotopes transported by different atmospheric circulation systems are different, and the precipitation on the Qinghai Tibet Plateau is affected by monsoon and westerly circulation, which is very sensitive to climate and environmental change. Hydrogen isotopes of wax in lake sediments provide a means to restore past precipitation information. The stable hydrogen isotope records of sediments from different lakes (Qinghai Lake, linggecuo lake and Bangong Lake) in the East and west of the Qinghai Tibet Plateau provided by the author reconstruct the isotopic changes of precipitation in the East and west of the Qinghai Tibet Plateau in the past 20000 years, and study the effects of summer monsoon and westerly jet on water vapor in the Qinghai Tibet Plateau since the late Pleistocene, It also provides important basic data for reconstructing the paleoclimate and environmental changes of the Qinghai Tibet Plateau in the past.
HOU Juzhi
XRF data can quickly, nondestructive and high-resolution obtain the relative abundance of constant and trace geochemistry, which can be used to reconstruct the environmental change. This data includes the XRF multi-element data of Daze Co and Jiang Co and the age depth data of Lake cores, which can be used to reconstruct the climate and environmental changes in the East and west of the Qinghai Tibet Plateau in the past 20000 years. In Daze Co and Jiang Co lakes, Ti, K, Fe, Si and other elements show the same change trend. Through multi index comparative analysis, it is considered that Ti and other rock forming elements are mainly affected by the inner diameter flow conditions of the basin and can be used to reconstruct the changes of hydrological conditions in the basin in recent 20000 years.
HOU Juzhi
1) The data include the temperature records reconstructed by using the core depth, age and biomarker gdgts of Bangong Lake to reconstruct the annual average temperature change of Bangong Lake Basin in the west of Qinghai Tibet Plateau since the last deglaciation. At present, most paleoclimate records on the plateau are qualitative and semi quantitative, and the quantitative records are very limited, which restricts the in-depth understanding of the mechanism of climate change on the plateau. Bangongcuo, the largest lake in the west of Qinghai Tibet Plateau, was selected as the study area, and the average annual temperature change in this area since 16 ka BP was reconstructed by using biomarker indexes. 2) The record was reconstructed using gdgts of lake sediments. 3) The data are detailed and reliable. 4) This study not only provides data for understanding the past climate change in the western Qinghai Tibet Plateau, but also provides a basis for discussing the plateau climate change mechanism and verifying the reliability of regional climate model.
HOU Juzhi, WANG Mingda
1) The data includes 40 14C dating data of multiple Lake cores. The age control of most lake sediment cores is completed by radiocarbon isotope (14C) dating. The data sheet includes Lake core sample number, laboratory sample number, sample depth, 14C results, dating error and corrected results. The chronological framework of Lake cores is the basis for paleoclimate reconstruction. 2) All 14C data are completed in beta analytical Inc, and the laboratory operation is in strict accordance with the standard process. 3) The quality of the 40 dating data is good. 4) The data have been published, which provides basic data for the study of paleoclimate in the Qinghai Tibet Plateau.
HOU Juzhi
Simao basin is located in the south of Yunnan Province and the southeast of Qinghai Tibet Plateau. It belongs to the Sanjiang tectonic domain in the east of Tethys tectonic domain. Thick and continuous early Cenozoic strata are preserved in the basin, so it is an ideal material to restore the tectonic evolution history of the region and the southeast side of the plateau. a continuous and complete high-resolution sequence (361.86 m in thickness) of the Mengyejing Formation was obtained through the continuous drilling in the previous study. The mass-specific magnetic susceptibility, anhysteretic remanent magnetization, and saturation isothermal remanent magnetization from parts of samples of Xiaojinggu core (250 m) have been measured, and several important magnetic parameters were determined, including the high and low-frequency magnetic susceptibility (χlf), SIRM, and ARM. These records will provide an important insight into the paleoclimate change covering the Mengyejing Formation.
YAN Maodu
Qujing basin, located in the east of Yunnan Province, is a long and narrow faulted basin with a north-south trend. Thick and continuous Cenozoic sediments are preserved in the basin, which can be divided into Xiaotun Formation, Caijiachong Formation, and Ciying Formation from bottom to top. These sediments are ideal materials to explore the southeast escape and deformation affected by the India-Eurasian plate collision in the early Cenozoic and the formation and evolution history of the Indian monsoon. A total of a 320.1-meter core covering the entire Ciying Formation and the Caijiachong Formation was obtained through the continuous drilling mission carried out in the center of the basin in the previous study. The mass-specific magnetic susceptibility, anhysteretic remanent magnetization (ARM), and saturation isothermal remanent magnetization (SIRM) from parts of samples of Caijiachong core (320.1m) have been measured, and several important magnetic parameters were determined, including the high and low-frequency magnetic susceptibility (χlf), SIRM and ARM, thus providing important basic information for further mult-index climate reconstruction.
YAN Maodu
The Himalayas is the most majestic, tall and young folded mountain system on earth. Before Eocene, the Himalayas were in a long-term sinking shallow sea environment. Under the action of extremely strong Himalayan movement, the Himalayas rose from the sea. By the end of tertiary, it had risen to a high mountain with an average height of more than 3000 meters. Therefore, under the influence of global climate change, Mount Everest has experienced several major Pleistocene glaciations, leaving behind various glacial related sediments and interglacial deposits. In 1960, the scientific investigation team of the Chinese Everest mountaineering team and the scientific investigation team of the Chinese xishabangma mountaineering team in 1964 conducted a more detailed investigation on the glaciers and other Quaternary sediments in the two peaks and their adjacent areas. During the scientific investigation of Mount Qomolangma from 1966 to 1968, on the basis of previous work, the Quaternary glacial deposits characteristic of this area were further investigated, and the research on various deposits in interglacial period and post glacial period was strengthened, so as to find some complete and typical quaternary stratigraphic profiles. This data set comes from the field investigation of the scientific research team in this book. Outline This paper introduces the spatial distribution characteristics of Quaternary sediments, focuses on several main quaternary stratigraphic profiles, preliminarily establishes the sequence of Quaternary strata in this area and discusses the age of strata. It lays a foundation for in-depth discussion of Quaternary glaciation, paleoclimate and the rise of Himalayas in this area.
Tibetan Scientific Expedition of the Chinese Academy of Sciences
Based on the changes of tree ring stable oxygen isotope ratio since 1752 established in Northeast China, and based on the negative correlation between tree ring oxygen isotope ratio and summer drought index, the linear correlation equation between tree ring oxygen isotope and drought index is established, and the quantitative reconstruction of drought index from 1752 to 2015 is preliminarily completed. This result is helpful to understand the characteristics of regional dry and wet change from interannual to interdecadal scale. At the same time, it can also compare and study the impact of global change caused by human activities on regional hydrology and climate since the industrial revolution. It is of certain significance in revealing the mechanism of regional dry and wet change and distinguishing the impact of human activities and natural variability on regional climate.
XU Chenxi
Based on the changes of tree ring stable oxygen isotope ratio Since 1750 established in Qilian mountain area, based on the negative correlation between tree ring oxygen isotope ratio and summer drought index, the linear correlation equation between tree ring oxygen isotope and drought index is established, and the quantitative reconstruction of drought index from 1750 to 2016 is preliminarily completed. This result is helpful to understand the characteristics of regional dry and wet change from interannual to interdecadal scale. At the same time, it can also compare and study the impact of global change caused by human activities on regional hydrology and climate since the industrial revolution. It is of certain significance in revealing the mechanism of regional dry and wet change and distinguishing the impact of human activities and natural variability on regional climate.
XU Chenxi
Through the changes of tree ring stable oxygen isotope ratio since 1710 established in Bosnia area, based on the negative correlation between tree ring oxygen isotope ratio and summer drought index, the linear correlation equation between tree ring oxygen isotope and drought index is established, and the quantitative reconstruction of drought index from 1710 to 2019 is preliminarily completed. This result is helpful to understand the characteristics of regional dry and wet change from interannual to interdecadal scale. At the same time, it can also compare and study the impact of global change caused by human activities on regional hydrology and climate since the industrial revolution. It is of certain significance in revealing the mechanism of regional dry and wet change and distinguishing the impact of human activities and natural variability on regional climate.
XU Chenxi
This data set consists of volcanic ash chronological analysis data in Serbian loess. Volcanic ash chronology is a method to correlate and date geological, PALEOCLIMATOLOGICAL, archaeological and other strata and events by using volcanic ash layer as isochronous marker. Generally, the volcanic ash in sediments is compared through the chemical composition characteristics and characteristic mineral assemblages of minerals, and the age of volcanic ash layer is determined through the calibration of isochronous strata in the region; The age of the volcanic ash layer can also be determined by absolute dating methods such as AR ar. The volcanic ash chronological analysis data include the single mineral chemical composition of 8 layers of volcanic ash samples in different loess sections of Serbia and the AR ar chronological data of diorthite of 1 layer of volcanic ash samples. Among them, the single mineral chemical composition of volcanic ash samples was determined by jeol jxa 8100 electron probe of electron probe and scanning electron microscope laboratory of Institute of Geology and Geophysics, Chinese Academy of Sciences. The AR ar chronology data of diorite of volcanic ash samples were determined by helix SFT mass spectrometer of environmental research center of Scottish University Union. This data can provide further age constraints for the Loess in Serbia and is of great significance for the study of paleoclimate / Paleoenvironment in southeastern Europe.
HAO Qingzhen
This data set is composed of paleomagnetic analysis data of the comprehensive loess profile of titel stari slankamen, Serbia. The total thickness of the loess section measured by paleomagnetic experiment is about 55m, and the number of samples measured is 105. MMTD 80 automatic thermal demagnetizer produced by British magnetic measurement company is used for thermal demagnetization of the system, and the residual magnetism measurement is completed on 2g-760 three-axis superconducting magnetometer. All samples were systematically thermally demagnetized at 100 ° C, 150 ° C, 200 ° C, 250 ° C, 300 ° C, 350 ° C, 400 ° C, 450 ° C, 500 ° C, 520 ° C, 550 ° C, 585 ° C, 620 ° C, 630 ° C, 650 ° C, 685 ° C in 16 steps. The mixed demagnetization method was used for 33 samples. Firstly, thermal demagnetization was carried out to 150 ° C, and then alternating demagnetization was carried out. The alternating demagnetization field was 5 MT, 7.5 MT, 10 mT, 15 MT, 20 MT, 25 MT, 30 mT, 35 MT, 40 MT, 45 MT, 50 MT and 60 Mt. Finally, the characteristic remanence results of all samples were obtained by principal component analysis. The experimental analysis was completed in the State Key Laboratory of lithospheric evolution. This data provides further age constraints for the Loess in Serbia and is of great significance for the study of paleoclimate / Paleoenvironment in southeastern Europe.
HAO Qingzhen
This data set is composed of paleomagnetic analysis data of Huining loess profile on the Loess Plateau of China. The total thickness of Huining loess profile measured by paleomagnetic experiment is about 130 meters, and the number of samples measured is 200. MMTD 80 automatic thermal demagnetizer produced by British magnetic measurement company is used for thermal demagnetization of the system, and the residual magnetism measurement is completed on 2g-760 rock superconducting magnetometer. The experimental analysis was completed in the State Key Laboratory of lithospheric evolution. This data provides further age constraints for the Loess in Huining area of the Loess Plateau of China, and is of great significance for the study of paleoclimate / Paleoenvironment in the west of the Loess Plateau.
HAO Qingzhen
This data set is composed of photoluminescence dating data of loess profiles in Luochuan (35 ° 43 ′ n, 109 ° 25 ′ E) and Xuyi (118 ° 39 ′ e, 32 ° 51 ′ n) in China, including the results of photoluminescence chronology of 45 samples. Among them, the luminescence chronology of 21 samples from Luochuan section of the Loess Plateau of China uses the potassium feldspar monolithic regeneration method (SAR) multi-step temperature rise post IR IRSL (met pirir) dating technique; The study on the luminescence chronology of 24 samples in Xuyi section is that 8 samples are based on the photoluminescence dating of 4-11 micron quartz particles according to the standard monolithic regeneration method (SAR) measurement process, and 8 samples are based on the infrared luminescence dating of 4-11 micron multi mineral fine particles heated to 225 ℃ (pir225) according to the monolithic regeneration method measurement process, And 8 samples based on the infrared luminescence dating of 4-11 micron multi mineral fine particles heated to 290 ℃ (pir290) according to the single chip regeneration method measurement process. The instrument used for the photoluminescence dating of Luochuan and Xuyi loess profiles is RIS ø thermoluminescence / photoluminescence dating instrument made in Denmark. The experimental analysis was completed in the Department of Geosciences of the University of Hong Kong and babes Bolyai University in Romania. The data provide further age constraints for the Loess in Luochuan and Xuyi, China, and are of great significance for the study of paleoclimate / Paleoenvironment in the two regions.
HAO Qingzhen
The semi quantitative reconstruction of paleoclimate parameters such as Paleoprecipitation and paleotemperature in the Loess Plateau of Serbia and China in the past 1 million years is completed based on the magnetic susceptibility climate conversion function of loess established on the topsoil through the comprehensive magnetic susceptibility data of tiel stari slankamen loess profile in Serbia and Xifeng loess profile in the Loess Plateau of China in the past 1 million years. It is of great significance to study the difference and relationship of climate behavior characteristics (duration, amplitude, variability, etc.) between East Asian monsoon area and westerly affected area at different time scales during interglacial period with different temperature increase amplitude.
HAO Qingzhen
This data set consists of clay mineral analysis data of stari slankamen loess profile in Serbia. Using x'pert Pro MPD powder X-ray (XRD) manufactured by panalytical company in the Netherlands, we carried out clay mineral determination and Analysis on the comprehensive profile of stari slankamen loess at an interval of about 10-20 cm. The total thickness of the profile is about 41 meters and the number of samples is 279. The reproducibility of the scanning angle of the instrument is ± 0.0001 degrees. The experimental analysis was completed in Shandong Key Laboratory of tourism, resources and environment, Taishan University. This data reflects the change characteristics of clay minerals in the long-term loess sequence in Serbia, and is of great significance for the study of paleoclimate / Paleoenvironment in southeastern Europe.
HAO Qingzhen
This data set is composed of principal and trace element analysis data of different particle size components of stari slankamen loess comprehensive profile in Serbia. There are two sets of particle size samples in total. One set is divided according to the Uddin Wentworth particle size standard. A single sample is divided into six particle size samples, which are < 2 μ m、2-4 μ m、4-8 μ m、8-16 μ m、16-32 μ M and 32-63 μ M component, 102 samples in total; The other set divides a single sample into < 10 μ M and 10-63 μ M two components, a total of 52 samples. The contents of major and trace elements in each sample were determined by Axios wavelength dispersive X-ray fluorescence spectrometer (XRF) manufactured by panalytical company and nexion300d inductively coupled plasma mass spectrometry (ICP-MS) manufactured by Perkin Elmer company, The experimental analysis was completed in the Key Laboratory of Cenozoic geology and environment, Chinese Academy of Sciences and the Institute of analysis and testing, Beijing Institute of geology, China nuclear industry. The data can be applied to determine the particle size effect of element geochemical indexes of loess in the westerly affected area, and has important guiding significance for loess provenance discrimination and paleoclimate research by using element geochemical indexes.
HAO Qingzhen
This data set is composed of environmental magnetic analysis data such as non hysteresis remanence (ARM) and saturated remanence (SIRM) of the comprehensive loess profile of titel stari slankamen, Serbia. The total thickness of the composite section of titel stari slankamen loess is about 56m. We used 2g-760 rock superconducting magnetometer to measure and analyze the non hysteresis remanence (ARM) and saturated remanence (SIRM) at an interval of about 10 cm. The number of samples measured is 579. The experimental analysis was completed in the State Key Laboratory of lithospheric evolution. The data reflect the variation characteristics of magnetic properties of loess sequences in Serbia in recent one million years, which is of great significance for the study of paleoclimate / Paleoenvironment in southeastern Europe.
HAO Qingzhen
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