Xin Zhou

Xin Zhou
University of Science and Technology of China | USTC · School of Earth and Space Sciences

PhD

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58
Publications
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713
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Publications

Publications (58)
Article
Full-text available
Heinrich (H) events are significant millennial climatic events that occurred during the last glacial period. Their footprints exited most parts of the global world, including the Asian monsoon (AM) region. However, the internal hydroclimatic characteristics of the AM system and their link to the external forcing during the H stadials are not fully...
Article
More than 10% of the world’s population lives in the East Asian monsoon (EAM) region, where precipitation patterns are critical to agricultural and industrial activities. However, the dominant forcing mechanisms driving spatiotemporal changes in the EAM remain unclear. We selected Holocene records tracking monsoon precipitation in the EAM region re...
Article
Variations in East Asian summer monsoon (EASM) precipitation impact agriculture, water resources, electricity generation, and economic development in the densely populated region of central eastern China. However, uncertainties remain in the history and driving mechanisms of precipitation changes in this region over the past two millennia. We prese...
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Numerous studies have been conducted to investigate precipitation variation in the monsoon region of eastern China during the past millennium, however, most of them have mainly focused on the records from northern and central China, thus lacking of precipitation records from southern China. In the present study, we carried out multi-proxy analyses...
Article
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Northern China, particularly the Yellow River Basin, which is the birth place of Chinese civilization and has been the political center throughout most of China’s history, is an ideal region for studying the response of human activities to climate change. However, studies on links between climate change and variations in earlier civilization are li...
Article
Several prominent negative carbon isotope (δ¹³C) excursions are observed during the Ediacaran-Cambrian (E-C) transition, reflecting large perturbations of the carbon cycle in the ocean–atmosphere system. These negative δ¹³C excursions have been linked to dramatic paleoenvironmental changes and been widely used as regional and global chemostratigrap...
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An evaluation of the history of anthropogenic mercury (Hg) emissions is needed to quantify total atmospheric Hg emissions since the Industrial Revolution. Thus more long-term records of Hg accumulation rate from natural archives are needed. In the present study, a sediment core from Tianchi Lake, a crater lake in northeastern China, was used to rec...
Article
A qualitative understanding of the long‐term variation in the population dynamics of Yellow Sea (YS) herring is particularly important for clarifying the evolutionary processes and driving mechanisms of the YS large marine ecosystem. Unfortunately, because of a lack of long‐term, continuous, and simultaneous monitoring data, the specific driving pr...
Article
Lacustrine sediments from the Northeast Plain of China are an ideal archive for recording the climatic history and variability of the East Asian monsoon during the Quaternary in mid-latitude East Asia. However, the lack of a high-resolution stratigraphy and high-precision geochronology of these sediments has limited our understanding of the mechani...
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The timing of the Holocene summer monsoon maximum (HSMM) in northeastern China has been much debated and more quantitative precipitation records are needed to resolve the issue. In the present study, Holocene precipitation and temperature changes were quantitatively reconstructed from a pollen record from the sediments of Tianchi Crater Lake in nor...
Article
The Kuroshio Current (KC), which redistributes heat and moisture from the tropics toward mid-latitudes, considerably affects ocean–atmosphere–land interactions along its pathways. However, our knowledge about the KC strength and associated forcing, based on investigations of instrumental data and model simulations, is controversial, impeding assess...
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The evolution history of coastal upwelling systems in the East China Sea over the late-Holocene are important yet difficult to be characterized. Here, we present ~3000-year temperature records based on both alkenones (UK’37) and glycerol dialkyl glycerol tetraethers (TEXH86) from a sedimentary core in the coastal upwelling site of the southern East...
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There is a controversy regarding the timing of the onset of the Holocene optimum (HO) in the Huai River Basin in eastern China, reflecting the scarcity of well-dated high-resolution sedimentary records in the region. In this study we validate the time-transgressive onset of the HO in the East Asian Monsoon (EAM) region and update a regression model...
Article
The Arctic region is very sensitive to climate change and important in the Earth’s climate system. However, proxy datasets for Arctic climate are unevenly distributed and especially scarce for Svalbard because glaciers during the Little Ice Age, the most extensive in the Holocene, destroyed large quantities of sediment records in Svalbard. Fortunat...
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Abstract Holocene climatic and environmental changes on the northeastern Tibetan Plateau (TP) have been widely discussed based on the climatic records from sedimentary cores. However, differences in the reconstructed climatic history from various studies in this region still exist, probably due to influence of climatic proxies from multiple factors...
Article
A 9.24 m sediment core, GA-2, was collected on the coastal platform of Grande Valley, a relatively narrow and shallow fjord in Fildes Peninsula, King George Island, Antarctica. The sediment was formed between 6600 and 2000 cal. yr bp according to accelerator mass spectrometry (AMS) ¹⁴ C dating of five bulk sediment samples. The comprehensive proxy...
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Marine sediments have been frequently used to reconstruct the records of environment change and human activities. We collected four sediment cores from Wanquan River estuary and the eastern continental shelf of Hainan Island in the South China Sea, and analyzed the down-core physical and chemical properties of sub-samples. Based on 210Pb dating, th...
Article
Palaeotsunami studies have revealed that a great tsunami occurred in the South China Sea (SCS) and hit Xisha Archipelago a thousand years ago, suggesting the risk of tsunami hazard in this region. However, knowledge about palaeotsunamis in the East China Sea (ECS) is still limited. In this study, the grain size sequence of a marine sediment core wa...
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The contents of Ti, Al and Fe 2O3 in a lacustrine sediment core (DY6) collected from Dongdao Island, South China Sea (SCS), were determined to be much higher than those in the three major sediment end-members (coral sand, guano and plants), and their likely sources include terrigenous dust and volcanic ash. At 61 cm (∼AD 1300), the contents of Ti,...
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The East Asian summer monsoon affects precipitation and hence vegetation in the densely populated Northwest Pacific region, yet a long-standing controversy exists concerning the spatial and temporal dynamics of the Holocene Optimum (HO) in the East Asian Monsoon Region. Here we use a detailed 14,000-year record reconstructing vegetation variations...
Article
Using model results from the first phase of the Pliocene Model Intercomparison Project (PlioMIP) and four experiments with CAM4, the intensified African summer monsoon (ASM) in the mid-Piacenzian and corresponding mechanisms are analyzed. The results from PlioMIP show that the ASM intensified and summer precipitation increased in North Africa durin...
Article
Heinrich event 1 (H1) is an important millennial climate event during the last deglaciation. The substantial decreasing of monsoon strength in the East Asian monsoon region during the H1, as shown by stalagmite δ18O records, has been attributed to the southward shift of the intertropical convergence zone (ITCZ), which is caused by the slowdown/coll...
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While mean grain size of sensitive component in muddy sediments from Chinese coastal seas was widely used as a proxy for reconstruction of the East Asian winter monsoon (EAWM) strength, many intractable problems still remain concerning the discrepancies in different studies. This paper provides a comprehensive overview of recent researches on the r...
Article
We performed AMS 14C dating on 20 bulk sediments of a sediment core collected from Grande Valley, on Fildes Peninsula, Antarctica, a typical fjord environment during the Holocene period. However, the ages of samples along the sediment core were not in chronological order as they should be. To overcome the difficulty in obtaining a reliable chronolo...
Article
The isotopic composition of total organic carbon (TOC) in lakes has been widely used to interpret paleoclimatic changes and the depositional environments of lake sediments. However, the main factors that affect the carbon isotopes of TOC may vary in different lake sediment records, limiting the ability of organic carbon isotopes to explain biogeoch...
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Millennial-scale climate change in Asian monsoon region during MIS 3 has been studied using stalagmite, loess, and peat sediments. However, records from more materials are essential to further illustrate dynamics of these events. In the present study, a time-series of grain size covering 60–30 ka was reconstructed from lake sediments in the Yunnan...
Article
The historical fluctuation of lead (Pb) content in coastal sediments of China and its link with human activities have been extensively studied. However, the determined Pb profiles from even the same regions could contradict each other, likely due to the fact that different methods are used in detecting anthropogenic Pb emission. In the present stud...
Article
Variations of oceanic currents beyond the instrumental period are often difficult to characterize, although sea surface temperature (SST) changes along current pathways could provide some indirect information. Here we reconstruct four -based annual SST records over the past 2–3 centuries from muddy areas in the Yellow Sea (YS) and the northern East...
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We present analyses of a lacustrine sediment core (DY6) on Dongdao Island, which provides high-resolution paleoclimate records for the South China Sea (SCS). Results of element analyses indicate that the concentrations of Ti and Al in DY6 are much higher than the background on the island. Morphological characteristics of acidic insoluble particles...
Article
Although magnetic susceptibility (MS) of sediments is widely used as an indicator in paleoclimate reconstructions, its significance is unclear in short-term environmental change in muddy sediments on the continental shelves of the Yellow Sea and the East China Sea. In the present study, we found positive and negative correlations between MS and the...
Article
Large areas of muddy sediments on the coastal shelves of China provide important samples for studying climate and ecological changes. Analysis of a large number of such samples, which is essential for systematic study on environmental information recorded in mud areas because of complicated sedimentary environment and variable sedimentary rate, req...
Article
Relocation of the Yellow River estuary has significant impacts on not only terrestrial environment and human activities, but also sedimentary and ecological environments in coastal seas. The responses of regional geochemical characteristics to the relocation event, however, have not been well studied. In the present study, we performed detailed geo...
Article
The biogenic silica (BSi), total organic carbon (TOC), total nitrogen (TN) and grain size were analyzed with a gravity core (3250-6) collected from the mud area in the north East China Sea. The average deposition rate of the upper core was about 0.078 cm yr−1 based on the results of 210Pbex. The mean grain size increased with depth in general. The...
Article
Full-text available
The risk of large, devastating tsunamis in the South China Sea and its surrounding coastal region is commonly underestimated or unrecognized due to the difficulty of differentiating tsunami from storm deposits. As a consequence, few convincing records have documented tsunami deposits in this region. Here we report preliminary evidence from Xisha Is...
Article
Sensitive components of grain size in coastal muddy sediments of China have been widely used for reconstruction of the East Asian winter monsoon strength. However, trends of the winter monsoon strength profiles reconstructed for the past 2000 years from different sediment cores tend to be inconsistent and even contradictory. In the present study, t...
Article
Paleomonsoon strength is difficult to reconstruct. The strength of the East Asian monsoon and precipitation over large areas correlate well on a decadal time scale. Thus, monsoon strength can be reconstructed through proxies of sediments originating from large areas. In the present study, we investigated the characteristics of a sediment core from...
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Identification of natural and anthropogenic events in the past is important for studying their patterns and mechanisms; and sensitive proxies in marine sediments are more reliable for identifying these events than those in terrestrial sediments, which are usually disturbed by human activities. Since the main source materials for the sediments in th...
Article
The distribution of antimony (Sb) in topsoil and moss (Dicranum angustum) in disturbed and undisturbed areas, as well as coal and gangue, in Ny-Ålesund, Arctic was examined. Results show that the weathering of coal bed could not contribute to the increase of Sb concentrations in topsoil and moss in the study area. The distribution of Sb is partiall...
Article
It has been suggested that late-Holocene human activities caused the increase in atmospheric methane (CH4) concentration that otherwise would have been a naturally decreasing trend. As one of the places where rice farming originated, China has been considered to play a significant role in pre-industrial changes in atmospheric CH4 concentrations. To...
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The causes of atmospheric methane (CH4) changes are still a major contention, in particular with regards to the relative contributions of glacial-interglacial cycles, monsoons in both hemispheres and the late Holocene human intervention. Here, we explore the CH4 signals in the Antarctic EPICA Dome C and Vostok ice records using the methods of times...
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The geomorphic evolution of northwestern China during the Cenozoic has been a subject of much geological interest because of its link with the uplift of the Himalayan-Tibetan complex. Much information about these changes is recoverable from the sedimentary sequences of the region. We report here on the thick eolian deposits mantling the Huajialing...
Article
The increase in the global average temperature during the last century is considered an integrated result of anthropogenic and natural forcing, but different views remain about the anthropogenic impacts on the Asian monsoon precipitation. Based on the ∼2000-year records of stalagmite δ 18O from the Dongge Cave (Guizhou Province) and Wanxiang Cave (...
Article
Global surface temperature shows an increasing trend over the past 100 years. Anthropogenic and natural factors have been invoked to explain this warming, but their relative contribution and the spatial variability remain controversial. Based on a 2650-year temperature record from a stalagmite near Beijing, we explore the possible impacts of human...
Article
The anthropogenic explanation for the increase in atmospheric methane concentration during the last 5000 years requires large CH4 emissions from human activities beginning early in the Bronze Age. This paper presents a compilation of 311 archeological sites in rice-growing regions of China. The number of new sites between 6000 and 4000 years ago in...
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In the western Loess Plateau in northern China, the Miocene eolian sequences reported in the recent years from different sites have extended to about 22Ma ago. The eolian origin of these sequences are evidenced by ( 1 ) their wide distribution mantling the broad highlands; (2) the spatially correlative magneto- and lithostratigraphy, magnetic susce...
Article
FeD/FeT(free iron/total iron) ratio can be used as a sensitive indicator of the weathering intensity in the Quaternary loess-soil sequences and in the Late Miocene-Pliocene Red Earth Formation. Up to date, high-resolution paleo-weathering record of the Early Pleistocene Wucheng Loess Formation has been only generated in the Lingtai loess-soil secti...

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Project (1)
Project
Forcing mechanisms on millennial to centennial changes in monsoon precipitation in central eastern China.