Quaternary Science Reviews最新文献

{"title":"Geomorphic signature of late Quaternary climate change and tectonic upheaval: Insights from the Pinggu Basin, Beijing","authors":"Fubing He ,&nbsp;Yubin Cui ,&nbsp;Xiaoyong Liu ,&nbsp;Kai Wang ,&nbsp;Ruijie Li ,&nbsp;Mengmeng Cao ,&nbsp;Guanghong Liu ,&nbsp;Wenzhi Niu ,&nbsp;Yueze Zhang ,&nbsp;Lingyan Bai ,&nbsp;Xinhe Lv","doi":"10.1016/j.quascirev.2025.109401","DOIUrl":"10.1016/j.quascirev.2025.109401","url":null,"abstract":"<div><div>Understanding the relative influence of tectonics and climate on landscape evolution is a fundamental challenge in geomorphology, particularly in tectonically active intraplate regions experiencing significant climatic shifts. This study investigates the Pinggu Basin, located at the transition between the Yanshan Mountains and the North China Plain, to decipher the interplay of these forces in shaping fluvial landscapes during the late Quaternary. Through detailed geomorphological mapping, stratigraphic analysis, and multi-proxy chronological dating (OSL, ¹⁴C, ¹⁰Be-²⁶Al, paleomagnetism), we reconstruct the basin's geomorphic and sedimentary history. Our results reveal a critical, previously undocumented tectonic regime shift around the late Late Pleistocene (∼17 ka), transitioning from a prolonged period of subsidence-dominated deposition (∼141 ka - 17 ka), characterized by &gt; 50 m of alluvial fan-braided river and aeolian sediment accumulation, to a phase of regional uplift promoting sustained fluvial incision. Following this fundamental tectonic reorganization, we demonstrate that the five distinct fluvial river terraces levels (T1-T5) along the Ju River, was primarily paced by Late Pleistocene to Holocene climate variability. Terrace ages correlate strongly with major climate transitions, including MIS 3/4, the Last Glacial-Holocene transition, and subsequent Holocene climatic fluctuations influencing the East Asian Monsoon. This climate-driven formation mechanism, operating within the context of regional uplift that provided the potential for incision, contrasts with previous interpretations emphasizing localized fault control. Furthermore, we reconstruct the evolution of the Ju River system, documenting headward erosion, river capture and at least three major channel migrations, as a response to this combined tectonic and climatic forcing. This study provides critical insights into the complex interplay and hierarchical controls of intraplate tectonics and climate change in shaping continental landscapes, offering a valuable, well-constrained analogue for similar tectonically active, climate-sensitive regions globally.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"360 ","pages":"Article 109401"},"PeriodicalIF":3.2,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel n-alkanes records reveal organic matter sources and monsoon hydroclimatic changes in Dahu Swamp in South China since the last deglaciation","authors":"Wei Zhong ,&nbsp;Xiaojun Wang ,&nbsp;Yingbing Lin ,&nbsp;Tianhang Li ,&nbsp;Durui Lin ,&nbsp;Yongdong Zhang ,&nbsp;Mingying Quan","doi":"10.1016/j.quascirev.2025.109388","DOIUrl":"10.1016/j.quascirev.2025.109388","url":null,"abstract":"<div><div>The long-term evolution of complex and variable monsoon climate has not been well understood. The relatively closed Dahu Swamp in South China presents an advantageous setting for reconstruction of the paleoclimate and paleoenvironmental conditions. This study provides novel <em>n</em>-alkanes records to explore the accumulation of organic matter, hydroclimate changes, and driving mechanisms in the south of the East Asian monsoon region. A 16.2-kyr long <em>n-</em>alkanes record exhibits both unimodal and bimodal distribution patterns, with long-chain <em>n-</em>alkanes dominating (52.0–92.4 %), indicating that the organic matter inputs are chiefly sourced from terrestrial higher vegetation and emergent plants. With the support of previously published proxy records from the same site, the <em>n-</em>alkanes reveal that peat sediments are mainly developed during cold/dry conditions, which are not conducive to the growth of large aquatic plants, reduce microbial activity, and are favourable to the preservation of exogenous terrestrial organic matter. Conversely, warm/humid intervals exhibit opposite trends. The <em>n-</em>alkanes also document drought events, several hundred years long, which are associated with high-latitude climatic processes and low-latitude ocean-atmosphere interactions that affect the East Asian monsoon. Further periodic analysis allowed the identification of millennial (∼2200 yr) and multi-centennial cycles (∼430 yr, 520 yr, and 640 yr), illustrating the influence of solar radiation and activity on the long-term development of the East Asian monsoon. This study contributes to a deeper understanding of the dynamics related to organic matter input and hydroclimatic changes in the East Asian monsoon region, and emphasises the particular insight from the <em>n</em>-alkanes.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"360 ","pages":"Article 109388"},"PeriodicalIF":3.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Holocene summer temperature variability in the Southern Carpathians: possible North Atlantic Jet forcing and high-altitude sensitivity","authors":"Aneta Formáčková ,&nbsp;Ladislav Hamerlík ,&nbsp;Laurențiu Țuțuianu ,&nbsp;Alfred Vespremeanu-Stroe ,&nbsp;Luminita Preoteasa ,&nbsp;Diana Hanganu ,&nbsp;Gusztáv Jakab ,&nbsp;János L. Korponai ,&nbsp;Ákos Bede-Fazekas ,&nbsp;Eszter Tombor ,&nbsp;Bartosz Kotrys ,&nbsp;Mateusz Płóciennik ,&nbsp;Maria Ilie ,&nbsp;Enikő Magyari","doi":"10.1016/j.quascirev.2025.109378","DOIUrl":"10.1016/j.quascirev.2025.109378","url":null,"abstract":"<div><div>The Southern Carpathians, a pivotal yet understudied transition zone between Atlantic and continental climate regimes, lack high-resolution summer temperature reconstructions critical for deciphering North Atlantic Oscillation (NAO) and North Atlantic Jet (NAJ)-driven Holocene climate variability. In this multi-proxy study, we use subfossil chironomids, pollen, loss-on-ignition, magnetic susceptibility, as well as major and trace element analyses from the sediments of a high alpine lake, Bâlea (2034 m a.s.l.), to reconstruct sub-century scale Holocene climate variability and environmental change. Chironomid-inferred average T_July at the lake is 9.3 °C today. The lowest temperatures around 6 °C were found in the Lateglacial (∼13,600 cal yr BP). In the Holocene (since 8330 cal yr BP), T_July ranged from 7.5 to 10.4 °C with cooler periods between 5500 and 4800 cal yr BP (∼8.9 °C) and around 4200 cal yr BP (∼9 °C). After 4200 cal yr BP, ln(Rb/K) ratios suggested increasing precipitation that likely affected the sediment composition of the lake. Our findings support the NAJ's summer impact in Eastern Central Europe by showing a ∼0.5–1 °C multi-decadal summer cooling in periods with a more northerly position of the summer NAJ. Chironomid assemblage composition change at 4200 cal yr BP involved the increase of <em>Micropsectra insignilobus</em>-type and <em>Heterotrissocladius marcidus</em>-type, while <em>Micropsectra radialis</em>-type declined. In addition, the overall chironomid population size declined pointing to decreasing lake productivity. The dominant taxon of the early- and mid-Holocene assemblages, <em>Micropsectra radialis</em>-type, disappeared at 2750 cal yr BP. We explained this faunal change with lake substrate change and proved the bias of the inferred increase in T_July after 2750 cal yr BP.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"360 ","pages":"Article 109378"},"PeriodicalIF":3.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Late Holocene multiphasic use and occupation around a western Amazonian Lake","authors":"Bianca Tacoronte Gomes ,&nbsp;Crystal N.H. McMichael ,&nbsp;Nina Witteveen ,&nbsp;Kiara Martel ,&nbsp;Cathelijne Kool ,&nbsp;Susann R. Canales-Aguilera ,&nbsp;Larry C. Peterson ,&nbsp;Susana C. León-Yánez ,&nbsp;Mark B. Bush","doi":"10.1016/j.quascirev.2025.109387","DOIUrl":"10.1016/j.quascirev.2025.109387","url":null,"abstract":"<div><div>Competing hypotheses exist regarding the relative importance of flood events, droughts, and human activity in shaping northwest Amazonian vegetation within the last 2000 years. We hypothesize that drier conditions were more favorable for human occupation in these ever-wet forests, and we present a high-resolution multiproxy paleoecological record of the last two millennia from a currently uninhabited lake, Zancudococha, in northwestern Ecuador. Pollen, phytoliths, charcoal, XRF, and loss-on-ignition data were analyzed to reconstruct the relative roles of climatic changes and human activity in shaping local vegetation. Humans were probably already influencing this system at the onset of our study period. By modeling past forest cover changes using pollen percentages, we showed that land-use intensity was highest between c. 470 and 1360 CE. Overall, drier conditions were more likely to have supported maize cultivation over the last 2000 years than wet ones, and this was especially clear during the Medieval Climate Anomaly (c. 900–1250 CE). An abandonment phase occurred between 1360 and c. 1630 CE, when all signs of human activity disappeared from the record and forest cover increased. The lake was later reoccupied, and there were small-scale clearances during the Jesuit (1680–1890 CE) and Rubber Boom (1890–1925 CE) times, with near modern abandonment occurring c. 1925 CE.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"359 ","pages":"Article 109387"},"PeriodicalIF":3.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decoupled winter and summer climate changes in southern Europe during the Dansgaard-Oeschger cycles","authors":"Jena Zumaque ,&nbsp;Anne de Vernal ,&nbsp;Bianca Fréchette ,&nbsp;Joël Guiot ,&nbsp;Maria F. Sánchez-Goñi ,&nbsp;Chéïma Barhoumi ,&nbsp;Odile Peyron ,&nbsp;Matthew Peros ,&nbsp;Ariane Burke ,&nbsp;Jon Camuera ,&nbsp;Gonzalo Jiménez-Moreno ,&nbsp;María J. Ramos-Román","doi":"10.1016/j.quascirev.2025.109273","DOIUrl":"10.1016/j.quascirev.2025.109273","url":null,"abstract":"<div><div>The marine isotope stage 3 (MIS 3) (∼60–30 ka) exhibits large amplitude millennial climatic oscillations, also named Dansgaard-Oeschger (DO) cycles, which are marked by alternation of warm (GIs – Greenland interstadials) and cold phases (GSs – Greenland stadials). Here, we explore the seasonal nature of the DO cycle climate signal in southern Europe using 12 pollen records that allowed us to reconstruct the vegetation types and key climatic parameters such as seasonal temperatures and precipitation. Our results show the development of arboreal vegetation during GIs and non-arboreal vegetation during GSs. They also indicate that vegetation changes were mainly driven by winter precipitation and temperatures, with high and low values during GIs and GSs, respectively. The results tend to demonstrate a decoupling between winter and summer conditions, with relatively stable and warm summer temperatures throughout MIS 3, but large amplitude variations in winter. We infer that the climate over southern Europe was mainly influenced by surface conditions over the North Atlantic driven by stratification due to meltwater discharge, and also possibly by extension/contraction of the subpolar gyre (SPG) through changes in the westerlies’ strength, thus impacting the extent of winter sea-ice cover, temperature and moisture availability over southern Europe.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"359 ","pages":"Article 109273"},"PeriodicalIF":3.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying cycles of tectonically induced vertical surface motions in an accretionary wedge: evidence from foraminiferal-based Plio-Pleistocene paleo-water depth estimates of the Island of Rhodes (Greece)","authors":"Daniela Eichner ,&nbsp;Gerhard Schmiedl ,&nbsp;Jürgen Titschack ,&nbsp;Ulrich Riller ,&nbsp;Nils Andersen ,&nbsp;Malu Ferreira ,&nbsp;Yvonne Milker","doi":"10.1016/j.quascirev.2025.109369","DOIUrl":"10.1016/j.quascirev.2025.109369","url":null,"abstract":"<div><div>The Island of Rhodes, located in the Eastern Mediterranean Sea at the eastern terminus of the Hellenic forearc, experienced intensive tectonic motions during the Plio-Pleistocene. Marine sediments of the Lindos Bay Formation, Plio-Pleistocene in age, were uplifted and are outcropping today along the eastern coast of the island. These sediments offer an unique opportunity to unravel the complex depositional and neotectonic history of Rhodes. In this study, we provide new paleo-water depth data from the Cape Vagia sediment section and summarize and integrate these results with existing data of paleo-water depth changes during the deposition of the Lindos Bay Formation. Paleo-water depth reconstructions were obtained by using an existing transfer function, applied to the fossil benthic foraminiferal assemblages. In doing so, the full cycle of subsidence and surface uplift of the eastern coast of the Island of Rhodes during the Plio-Pleistocene was reconstructed for the first time. Accordingly, our data indicates a maximum surface uplift of ∼700 m since the Early Pleistocene. Each of the presented sediment sections further revealed distinct short-term tectonically controlled surface uplifts with rates up to 10 mm a⁻¹. Such rates occur regularly throughout the Plio-Pleistocene sedimentary records on Rhodes and do not seem to be related to the long-term uplift or subsidence trend of the island. Furthermore, the sedimentary records reveal differences in the timing and amplitudes of vertical motions among individual depocenters. These differences can be explained by an interplay between island-wide and local vertical surface motions, of which the latter may be due to the activity of kilometer-scale normal faults. Accretionary wedge dynamics can account for the observed temporal and spatial variations in vertical surface motions on the eastern coast of Rhodes.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"359 ","pages":"Article 109369"},"PeriodicalIF":3.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vegetation and climate changes during the Middle to Upper Palaeolithic transition in the southwestern Mediterranean: What happened to the last Neanderthals during Heinrich stadial 4?","authors":"Liz Charton ,&nbsp;Nathalie Combourieu-Nebout ,&nbsp;Adele Bertini ,&nbsp;Vincent Lebreton ,&nbsp;Odile Peyron ,&nbsp;Mary Robles ,&nbsp;Dael Sassoon ,&nbsp;Marie-Hélène Moncel","doi":"10.1016/j.quascirev.2025.109345","DOIUrl":"10.1016/j.quascirev.2025.109345","url":null,"abstract":"&lt;div&gt;&lt;div&gt;During the last glacial period, and particularly Marine Isotope Stage 3 (MIS 3, dated 60–27 ka), various abrupt and arid climate episodes impacted the northern hemisphere. These are known as Heinrich Stadials and are linked with major iceberg discharged in the North Atlantic. Heinrich Stadial 4 (HS4), one of the strongest of these events occurring around 39 ka BP, has raised numerous debates regarding its potential impact on the Middle to Upper Palaeolithic transition (MUPT) and Neanderthal extinction, especially in the Iberian Peninsula where late persistence of Neanderthals has been claimed beyond 40 ka BP. Although palynological studies from the Iberian margins have previously highlighted vegetation changes during this period, these have generally been of low resolution and thus, the environmental conditions during HS4 and the possible impact of this event on the last Neandertal populations are still poorly understood.&lt;/div&gt;&lt;div&gt;This study uses the marine core from Ocean Drilling Program (ODP) Site 976, located in the Alboran Sea, to provide new ultra-high-resolution analyses for the interval between 41 and 34 ka BP, including the Greenland Stadial 9 (GS9)/HS4 and the Greenland Interstadial 8 (GI8). The aim is to reconstruct vegetation and climate changes in southern Mediterranean with a resolution never achieved before and to discuss human occupation in the frame of these changes. Vegetation, climate changes and human occupation are discussed on the basis of 1) pollen analysis, 2) quantitative climate reconstructions based on a multi-method approach, and 3) maps of human occupation based on a synthesis of archaeological sites for western Mediterranean Europe in the 42–34 ka BP time interval. Results show a fast spread at centennial scale of steppe and semi-desert vegetation, with a typical three-phased pattern for the GS9 (HS4). This pattern is compatible with the results of various records from Greenland, southwestern Europe and Brazil. The description of these phases with an unpreceded resolution for the SW Mediterranean region supports the connection between the hydroclimatic changes in Greenland and lower latitudes, while the transition to the following GI8 climate amelioration displays a major vegetation instability that mimics the pattern of the last deglaciation at sub-millennial scale. The climate reconstruction shows cold conditions during HS4 and enhanced aridity mostly linked to the winter rainfall deficit caused by the abrupt disturbance of the Mediterranean seasonal regime of precipitations. The regional comparison with available palynological and paleoclimatic records from the western Mediterranean and the Atlantic sheds light on the spatial expression of the arid event, highlighting a south-westward trend in aridification in the Iberian Peninsula. The Alboran Sea appears as a critical area at the interface of the Atlantic and Mediterranean influences, recording the particular expression of fast climate oscillations in","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"359 ","pages":"Article 109345"},"PeriodicalIF":3.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drivers of late Quaternary lake level fluctuations of Khyargas Nuur, western Mongolia - glacial meltwater discharge or atmospheric moisture supply?","authors":"Dennis Wolf ,&nbsp;Frank Lehmkuhl ,&nbsp;Viktor Schaubert ,&nbsp;Neda Rahimzadeh ,&nbsp;Manfred Frechen ,&nbsp;Georg Stauch ,&nbsp;Ochirbat Batkhishig ,&nbsp;Karl Wegmann","doi":"10.1016/j.quascirev.2025.109373","DOIUrl":"10.1016/j.quascirev.2025.109373","url":null,"abstract":"<div><div>This study presents the first comprehensive late Quaternary chronology of lake level variations of the Khyargas Nuur (western Mongolia), based on a geomorphological approach supported by luminescence dating of relict shorelines and lacustrine sediments. The endorheic Khyargas Nuur in the Basin of Great Lakes is the ultimate sink of a sequential water and sediment cascade from the adjacent Mongolian Altai and Khangai Mountains. Several intercalated lakes repeatedly joined as one major paleolake, as evidenced by various morphological shoreline features. Situated in the mid-latitude Westerlies-dominated climate regime of Arid Central Asia and affected by the distant effects of the East Asian Summer Monsoon, the dynamic climate of the Basin of Great Lakes is determined by the co-evolution of these atmospheric circulation systems. Our observations comprise 11 distinct paleolake levels between +7 m and +188 m above modern lake level (aml). Calculations of paleolake extent and water volume emphasize the periodically enhanced inflow and gradual capture and abandonment of upstream-located lakes. In the regional to global paleoclimatic context, our results reveal three distinct phases of lake level dynamics: (i) A transgression to a maximum level of +129 m aml during Marine Isotope Stage 5c (104.7 ± 14.4–88.8 ± 12.7 ka) primarily controlled by increased atmospheric moisture supply from the Westerlies. (ii) A post-Last Glacial Maximum lake expansion to a level of +118 m aml around 14 ka, ultimately controlled by enhanced glacial meltwater discharge into the basin. This is followed by a lake regression throughout the late Glacial to early Holocene transition in response to a gradually decreasing meltwater supply and a drier climate. (iii) A late Holocene transgression to +15 m aml reflecting a general Holocene wetting trend across arid Central Asia, followed by small-scale level fluctuations post 2.6 ka.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"359 ","pages":"Article 109373"},"PeriodicalIF":3.2,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Late-Holocene hydrological cycling in the maritime Ross Sea in response to the El Niño-Southern Oscillation","authors":"Xin Chen ,&nbsp;Tianming Ma ,&nbsp;Zicheng Yu ,&nbsp;Shizhu Wang ,&nbsp;Lei Geng ,&nbsp;Zhaoru Zhang ,&nbsp;Zhangqin Zheng ,&nbsp;Steven D. Emslie ,&nbsp;Xiaodong Liu","doi":"10.1016/j.quascirev.2025.109370","DOIUrl":"10.1016/j.quascirev.2025.109370","url":null,"abstract":"<div><div>Hydrological dynamics in Antarctic coastal ice-free regions are an important part of climate variability that is crucial for terrestrial ecosystems in Antarctica. However, there is no geological record of hydrological changes in lakes in the Ross Sea region. Here we used analyses of surface lake sediment and living microbial mats to show that photoautotrophic organism-derived lipid hydrogen isotopes reflected the δ²H values of lake water (δ²H_water). We present a new record of δ²H_lipids from two lacustrine sediment cores collected from Inexpressible Island in the western Ross Sea to reconstruct δ²H_water values over the past 3000 years. The reconstructed δ²H_water values range from −103 to −35 ‰, and are significantly higher than δ²H_water values of precipitation (snow). On the basis of our modern observations, the slope of the linear regression between δ²H and δ¹⁸O in lake water is lower than both global and Antarctic meteoric water lines, suggesting strong lake evaporation at our study region. Our sensitivity modeling experiment showed that the strength of evaporation is closely linked with summer air temperature. Furthermore, δ²H_lipids showed similar patterns in variations with regional air temperature recorded by ice cores in the western Ross Sea, indicating that lake surface evaporation is mainly driven by air temperature. Generalized Additive Models (GAMs) and Locally Weighted Scatterplot Smoothing (LOESS) on δ²H_lipids and published climate records in the western Ross Sea indicate that higher δ²H_C16 values are corresponding to a relatively warmer climate at 2550-1350 cal yr BP (Phase 2) while lower values (corresponding to a relatively colder climate) are found at 3000-2550 cal yr BP (Phase 1) and 1350-0 cal yr BP (Phase 3). Higher lake evaporation was caused by the incursion of warm and moist air into the western Ross Sea as mediated by anomalous high-pressure over the Amundsen Sea that often occurs during the El Niño-dominant events. Our study supports the notion that large-scale atmospheric variability controlled by the tropical Pacific plays a major role in hydrological changes in the high latitude regions of Antarctica.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"359 ","pages":"Article 109370"},"PeriodicalIF":3.2,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mountain glaciers regulate the response of Tibetan Plateau dust activity to global climate change during the last glacial","authors":"Liangqing Cheng ,&nbsp;Hao Long ,&nbsp;Linhai Yang ,&nbsp;Jingran Zhang ,&nbsp;Yougui Song ,&nbsp;Zhong Chen ,&nbsp;Yubin Wu ,&nbsp;Zhibao Dong","doi":"10.1016/j.quascirev.2025.109375","DOIUrl":"10.1016/j.quascirev.2025.109375","url":null,"abstract":"<div><div>The Tibetan Plateau (TP) is an important source in the global atmospheric dust cycle, while its response of dust activity to global and regional climate change remains unclear. This study presented high-resolution last glacial records for dust activity, near-surface wind intensity, annual temperature, and precipitation from a 4.8-m thick sedimentary sequence from the Yarlung Tsangpo River valley in the southern TP. The results indicated that dust activity in the southern TP is mainly regulated by the near-surface wind intensity modulated by temperature. On the orbital scale, dust activity roughly responds to changes in the Northern Hemisphere summer insolation (NHSI). On the millennium scale, dust activity shows prominent ∼5-kyr cycles, responding to changes in the Atlantic Meridional Overturning Current (AMOC). Mountain glaciers in the southern TP could regulate the response amplitude of dust activity to the NHSI and AMOC through modulating regional temperature and associated wind intensity. This study highlights the impact of mountain glaciers on dust activity in the southern TP, which has important implications for understanding climate change on the TP and its response to global climate change.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"359 ","pages":"Article 109375"},"PeriodicalIF":3.2,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}