Quaternary Science Reviews最新文献

{"title":"Source of rainfall above Mediterranean caves (Chauvet and Orgnac) and long-term trend of cave dripping oxygen isotopes based on 20 years monitoring records: Importance for speleothem-based climate reconstructions","authors":"Jian Zhang ,&nbsp;Dominique Genty ,&nbsp;François Bourges ,&nbsp;Simon L.L. Michel ,&nbsp;Bénédicte Minster ,&nbsp;Edouard Régnier ,&nbsp;Ludovic Devaux ,&nbsp;Stéphane Bujan ,&nbsp;Zhen Su ,&nbsp;Terhi K. Laurila","doi":"10.1016/j.quascirev.2024.109145","DOIUrl":"10.1016/j.quascirev.2024.109145","url":null,"abstract":"<div><div>Understanding the factors that shape climate and influence the isotopic composition of precipitation is crucial for paleoclimate reconstructions, especially in regions with Mediterranean climates where rainfall is influenced by both Atlantic and Mediterranean moisture sources. This study examines the relationship between moisture origins, climatic variables, and the stable isotopic composition of precipitation and cave drip water in the Orgnac and Chauvet caves, located in southern France, over a 20-year period. The research reveals notable seasonal variations in rainfall δ¹⁸O values, driven by temperature and Rayleigh distillation processes. As shown in our previous work in Villars Cave (SW-France), temperature changes alone cannot fully explain the observed isotopic variability. We observed that winter precipitation tends to have lower δ¹⁸O values due to longer transport distances from distant oceanic sources, while summer precipitation displays higher δ¹⁸O values due to shorter transport paths. Additionally, the study highlights the influence of sea surface wind speeds and evaporation rates on water vapor isotopes, further shaping the seasonal δ¹⁸O patterns. As rainwater infiltrates the soil and percolates into the karst system, the seasonal δ¹⁸O signal in drip water is often dampened due to mixing in the reservoirs above the caves, which typically reduces seasonality. The key findings include: (1) a multi-year increasing trend in drip water δ¹⁸O, likely associated with reduced local water excess and the effects of global warming, with significant implications for speleothem isotope records, and (2) moisture from the Mediterranean Sea contributes to 10% of the total precipitation source, despite the region's proximity to the sea, especially during intense storm events. This study provides new insights into the complex interactions between moisture sources, temperature, and isotopic signatures in Mediterranean climate regions, with implications for improving speleothem-based paleoclimate reconstructions.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"349 ","pages":"Article 109145"},"PeriodicalIF":3.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138582","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":"From the Late Pleistocene to the present: Geochemical characterisation of a lithic assemblage from Widgingarri Shelter 1, Arraluli Country, west Kimberley","authors":"Emily Nutman ,&nbsp;Sue O'Connor ,&nbsp;Wudugu Malanali ,&nbsp;Peter Collins","doi":"10.1016/j.quascirev.2024.109140","DOIUrl":"10.1016/j.quascirev.2024.109140","url":null,"abstract":"<div><div>The geochemical sourcing and characterisation of lithic assemblages is surprisingly rare in Australian archaeology. The studies that have been undertaken have overwhelmingly focused on recent Holocene material and on ethnographic artefacts in museum collections with little attention paid to Pleistocene assemblages. Additionally, no work has been conducted on changes in raw material procurement over long time scales, despite many Australian sites having lengthy occupation histories.</div><div>This paper presents the results of a portable X-Ray Fluorescence (pXRF) geochemical analysis of a sizeable sample (<em>n = 760</em>) of lithic artefacts and ochre from the site of Widgingarri Shelter 1, one of the earliest sites in northwest Australia with discontinuous occupation from at least ∼50 ka to the contact period. This represents the first geochemical characterisation and sourcing study conducted on an Australian archaeological assemblage of this age and demonstrates how raw material procurement may have been influenced by climatic, sea-level, and landscape changes from the Late Pleistocene to the recent Holocene.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"349 ","pages":"Article 109140"},"PeriodicalIF":3.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Central Indigirka in the Last Ice Age, North-East Arctic Siberia","authors":"Jiri Chlachula ,&nbsp;Viktor M. Dyakonov ,&nbsp;Anatoly N. Alekseev ,&nbsp;Albert V. Protopopov ,&nbsp;Aisen I. Klimovskiy ,&nbsp;Stanislav D. Kolesov","doi":"10.1016/j.quascirev.2024.108990","DOIUrl":"10.1016/j.quascirev.2024.108990","url":null,"abstract":"<div><div>North-East Arctic Siberia inspires interest in Quaternary science because of the poorly known natural and cultural history of this vast territory. The current field research has been prompted by progressing permafrost thaw due to climate warming. Investigations in the central Indigirka area (2014–2021) focusing on fossiliferous Late Pleistocene sites provided new knowledge on relief dynamics and ecosystems during the Last Glacial. Geo-contextual and biotic proxies recovered from stratified yedoma formations in the tributary valleys—Uyandina, Tirekhtyakh, Badyarikha, Ogorokha—document parkland and forest landscapes of meandering channels and marshlands during the MIS 3 interstadial (55,000–24,000 yr BP) analogous to the present-day. Frigid tundra and syngenetic ground ice development characterized the last glacial stadials (MIS 4 and 2) and the second half of the MIS 3 non-glacial. Remains of ungulate and carnivore animals with preserved soft-tissues sealed in permafrost grounds underscore the supreme conservation within the Pleistocene cryolithic contexts. The new data complement the existing records of palaeo-biota and environmental change within the Yana–Kolyma Lowlands. The associated archaeological evidence confirms a very ancient (&gt;50,000 yr) peopling. The early MIS 3 interstadial was clearly the principal Late Pleistocene time span of the Palaeolithic dispersal within the Siberian Arctic.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"349 ","pages":"Article 108990"},"PeriodicalIF":3.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138450","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":"Ice and fire: Norse farming at the edge of the ice cap of the Western settlement in Greenland","authors":"Elia Roulé ,&nbsp;Natasha Roy ,&nbsp;Ludovic Gesset ,&nbsp;Camille Picard ,&nbsp;Charly Massa ,&nbsp;Emilie Gauthier","doi":"10.1016/j.quascirev.2024.109156","DOIUrl":"10.1016/j.quascirev.2024.109156","url":null,"abstract":"<div><div>In the late 10th century, the Norse established settlements in Greenland that lasted until the mid-15th century, driven by more than just climatic factors. These settlers introduced agropastoral practices and engaged in long-distance trade, especially in the highly prized walrus ivory. The Eastern Settlement (Eystribyggd), at 60°N, proved to be the largest and best studied settlement, in contrast to the smaller Western Settlement (Vestribyggd) at 64°N, particularly in the Kapisillit area. The Western Settlement was likely abandoned earlier than the Eastern Settlement, although the exact timing remains debated. The harsher climatic conditions may have pushed the western settlers towards a subsistence strategy focused, in addition to farming activities, on hunting and fishing. High-resolution multi-proxy analyses of lake sediments from Lake Itinera and Lake Pingu at Kapisillit, only 2 km away from the nearest Norse ruins, reveal subtle environmental changes and fire activity between 1000 and 1200 CE. These changes are characterised by a slight clearing of scrubland, including willows and alders, and an increased spread of herbaceous vegetation. Although the presence of coprophilous fungal spores suggests some herbivore activity, the data do not indicate significant grazing pressure. Instead, the declining values of these spores may reflect a decline in domesticated animals or increased hunting of wild herbivores, such as caribou, towards the end of the settlement period. After the mid-13th century, our results suggest a decrease in human influence, coinciding with the onset of the Little Ice Age. However, the reasons for the eventual abandonment of the Western Settlement remain unclear. This study provides evidence from pollen data and records of fire activity and contributes to our understanding of the complex interactions between societies and the environment, highlighting grazing and hunting pressure as key factors in vegetation change at the Western Settlement. The results highlight the complexity of interpreting environmental data, particularly in distinguishing between anthropogenic impacts and natural variability during the Norse period.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"349 ","pages":"Article 109156"},"PeriodicalIF":3.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Broad-scale valley agriculture reaches back to the Ming Dynasty based on multiproxy records from Guli Lake, northeastern Tibetan Plateau","authors":"Nannan Wang ,&nbsp;Wenjia Li ,&nbsp;Yanrong Zhang ,&nbsp;Lina Liu ,&nbsp;Xianyong Cao","doi":"10.1016/j.quascirev.2025.109208","DOIUrl":"10.1016/j.quascirev.2025.109208","url":null,"abstract":"<div><div>The northeastern Tibetan Plateau is the region with the longest history of development, most densely populated, and most obvious land use of the Tibetan Plateau. However, there is a lack of accurate knowledge of the timing and intensity of the human impacts on vegetation during the mid-to-late Holocene. In this study, we quantitatively compare the pollen assemblages from farmland with surrounding natural vegetation and results show that agricultural activities lead to an increase of Brassicaceae, cerealia Poaceae, and <em>Hippophae</em> pollen. Vegetation and climate change since 5 cal ka BP for Guli Lake in Hehuang Valley have been reconstructed from pollen and sediment chemistry data; and anthropogenic pollen indicators identified from a sediment core are combined with evidence from archaeological sites and historical documents, revealing that agricultural activity began after 4.8 cal ka BP but initially had a limited impact on vegetation. By 0.5 cal ka BP, the impact of farming activity on the vegetation increased significantly and oil-seed crops were cultivated, but the vegetation was still strongly affected by climate. Due to its superior natural condition, favourable government policy, and advanced agricultural technology, the Hehuang Valley became a pioneer area for agricultural expansion into the high-elevation region of the Tibetan Plateau.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"352 ","pages":"Article 109208"},"PeriodicalIF":3.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096053","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":"Hydroclimatic variations in southwestern China during the Middle to Late Holocene transition and effects on the evolution of Late Neolithic cultures in the upper Yangtze River Valley","authors":"Enguo Sheng ,&nbsp;Bin Liu ,&nbsp;Haijun Peng ,&nbsp;Mengxiu Zeng ,&nbsp;Shenwen Cai ,&nbsp;Jianghu Lan","doi":"10.1016/j.quascirev.2025.109225","DOIUrl":"10.1016/j.quascirev.2025.109225","url":null,"abstract":"<div><div>Understanding the effects of hydroclimatic variations on the evolution of Late Neolithic cultures is key to determining the relationships between climate and human society. We reconstructed the hydroclimatic history of southwestern China between 4.9 and 1.1 cal ka BP based on multiple geochemistry proxies, including loss-on-ignition values, total organic carbon and nitrogen contents, degree of humification, and element contents (e.g., Al, Ti, and Zr), as obtained for a peat core from the Caohai Basin in Guizhou Province. The peat record shows two significant centennial-scale droughts at 4.0–3.7 and 2.0–1.7 cal ka BP. The Caohai peat record also shows that wetter conditions existed during the 4.2 ka event (4.3–4.0 cal ka BP), which coincided with hydroclimatic changes throughout the Yangtze River Valley (YRV) and southern China, contrasting with the drier conditions in northern China. The good correlation between the reconstructed hydroclimatic records and archeological evidence on the Chengdu Plain during the Middle to Late Holocene transition (5.0–3.5 cal ka BP) suggests the hydroclimate had an important influence on the evolution of Late Neolithic cultures in the upper YRV. During this transition, the inhabitants on the Chengdu Plain learnt to adapt to hydrological changes by modifying the proportions of different crop types and locations and elevations of walled sites. In addition, near-synchronous hydroclimatic variations at <em>ca.</em> 4.0 cal ka BP suggest that climatic instability led to the decline/collapse of Late Neolithic cultures in the YRV. The demise of the Baodun Culture in the upper YRV occurred during a prolonged drought from 4.0 to 3.7 cal ka BP, which was synchronous with that in southern China, northern India, and the southern Indian Ocean, and was likely due to a contracted Intertropical Convergence Zone and an El Niño-like sea surface temperature state during this period.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"352 ","pages":"Article 109225"},"PeriodicalIF":3.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104823","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":"Sedimentological reconstruction of Glan-y-môr Isaf, North Wales: A model for the formation of stratified subglacial till assemblages from glaciolacustrine deposits","authors":"Cameron J. Powell,&nbsp;Rachel P. Oien","doi":"10.1016/j.quascirev.2025.109224","DOIUrl":"10.1016/j.quascirev.2025.109224","url":null,"abstract":"<div><div>Reconstruction of an understudied region of North Wales, north of the Llŷn Peninsula, redefines the dynamics and interaction of the Welsh Ice Cap and Irish Sea Ice Stream during the deglaciation of the last British-Irish Ice Sheet. Sedimentological research highlights the role of topography in creating distinct glacial environments as the Irish Sea Ice Stream retreated northwards from North Wales. Insights are gained into the production of stratified tills from previously deposited glaciolacustrine sediments and outwash sandur in a region where an ice-margin advanced over the site. Sedimentary analyses, including data on clast form, fabric, and diamicton particle size, are used to produce lithofacies profiles from which interpretations can be made into the styles of deposition and environmental change. Multiphase deposition, initially from Welsh ice flowing northwest, details a transition from a subglacial traction till to a distal, ice-marginal glaciolacustrine setting with laminated varves marking retreat. Above, sands and gravels formed by gravity flow, turbidity currents, and outwash document ice advance, then are capped by another subglacial traction till composed of Irish Sea deposits.</div><div>Sediments capture one of many oscillations of the Irish Sea Ice Stream along the North Wales coast while the ice remained anchored on Anglesey. Sedimentological analysis fortifies evidence that the last ice sheet, especially its ice stream outlets, was highly dynamic and oscillatory, responded heavily to topography, and created various ice-marginal environments during deglaciation.</div><div>This study presents a four-stage model for the formation of stratified tills at Glan-y-môr Isaf, beginning with initial glaciolacustrine sedimentation, ice then advanced towards the site, and finally overrode the pre-existing sediments. Processes forming stratified tills began with the contemporaneous deposition of outwash and deformation via glaciotectonism. Till stratification occurred from the cannibalisation of pre-existing laminated material into a subglacially deforming till layer, which laterally homogenised sediments over short transport distances and continued to occur well after ice had readvanced into the area. Crucially, sediments portray the complex behaviour of ice sheets in forming glacial sediments and provide knowledge that must be taken into consideration when modelling contemporary ice sheets.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"352 ","pages":"Article 109224"},"PeriodicalIF":3.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Landscape evolution of the Bolivian Amazon controlled by uplift events dated 13,000, 10,000 and 6000 cal yr BP","authors":"U. Lombardo ,&nbsp;L. Becerra-Valdivia ,&nbsp;G.A. Butiseacă ,&nbsp;C. Bronk Ramsey ,&nbsp;J. Ibañez-Insa ,&nbsp;H. Veit ,&nbsp;F. Mayle","doi":"10.1016/j.quascirev.2025.109197","DOIUrl":"10.1016/j.quascirev.2025.109197","url":null,"abstract":"<div><div>The Llanos de Moxos in the Bolivian Amazon, the second largest South American wetland, hosts many endemic species and a rich archaeological record that spans the entire Holocene. Despite its ecological and archaeological importance, very little is known about its Holocene environmental history. A growing body of evidence suggests that neotectonics played an important role in shaping its modern landscape and controlling past flooding dynamics, but the chronology and vertical displacements of past tectonic events are still largely unknown. Here, we present new data from a core taken at Lake Oceano, a large ria lake in the northern part of the Llanos de Moxos. To identify changes in the lithology and environment, we performed a battery of analyses, such as XRF scanning, mineralogy, granulometry, C/N and C and N stable isotopes, and also built an age-depth model using eighteen radiocarbon dates obtained from accelerator mass spectrometry (AMS) determinations. Based on the sedimentology and chemical analyses, we identified three major disturbances in the lake sedimentation that we interpret as positive tectonic events (i.e., tectonic uplifts). The first identified event occurred at approximately 13,400 cal yr BP and led to the formation of the lake by blocking the river course. A second uplift event took place around 10,000 cal yr BP, accompanied by a significant change in the geochemistry of the lake sediments. Furthermore, we have verified a third event at 6000 cal yr BP, previously recognized as responsible for the onset of Lake Rogaguado (aprox. 100 km NE of Lake Oceano), one of the largest lakes in South America. Overall, we show that ria lakes can provide key sedimentary archives to reconstruct the past timing and intensity of tectonic events. We discuss the interplay between tectonics and climate, highlighting the connection between tectonics and the region's flood history, with crucial implications for the interpretation of both archaeological and palaeoecological records throughout the Holocene.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"352 ","pages":"Article 109197"},"PeriodicalIF":3.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Holocene rock varnish microstratigraphy in the Dead Sea basin and Negev Desert: Chronometric application and climatic implication","authors":"Tanzhuo Liu ,&nbsp;Wallace S. Broecker ,&nbsp;Sidney R. Hemming ,&nbsp;Helena Roth ,&nbsp;Zachary C. Dunseth ,&nbsp;Guy D. Stiebel ,&nbsp;Mordechai Stein","doi":"10.1016/j.quascirev.2024.109146","DOIUrl":"10.1016/j.quascirev.2024.109146","url":null,"abstract":"<div><div>Rock varnish microstratigraphies from Holocene geomorphic and geoarchaeological features in the Dead Sea basin and Negev Desert of the Middle East record past millennial-scale wetness variations. Age calibration of the varnish record indicates six major wet phases between 11 and 4.9 ka during the early to mid Holocene and six minor wet phases between 3.7 and 0.3 ka during the late Holocene. The earliest (11 ka) and late (2.8, 1.5, 0.3 ka) Holocene wet phases appear to be correlated with Holocene millennial-scale cooling events in the North Atlantic, with a cold/wet (warm/dry) regime corresponding with the influence of the North Atlantic and Eastern Mediterranean climates. The early to mid Holocene (9.9–4.9 ka) wet phases in the varnish record altogether constitute an extended moist interval that is broadly concurrent with the African Humid Period (10.5–4 ka). Such a warm/wet (cold/dry) regime reflects a possible northward incursion of the African monsoonal moist air masses over the Dead Sea basin and Negev Desert. These findings suggest a climatic interplay between the African monsoon circulations and the westerly circulation/Eastern Mediterranean cyclones in the Southern Levant during the early to mid Holocene.</div><div>The Holocene varnish microstratigraphy, once radiometrically calibrated, can be used as a correlative dating tool to estimate surface exposure ages of geomorphic and geoarchaeological features in the study region. Varnish microlamination (VML) dating of abandoned shorelines of the Dead Sea yields new insights into the Holocene lake level fluctuations. The Dead Sea attained its Holocene highest stand at 369 mbsl (meters below mean sea level) around 11 ka and transgressed to the levels of 370–380 mbsl four times at ca. 9.9, 8.8, 7.6, and 6.2 ka. It rose intermittently to 383, 385, 387.5, and 389 mbsl around ca. 4.9, 2.8, 2.1, and 1.5 ka, respectively, and has remained below 389 mbsl since 1.5 ka. VML dating of an ancient water diversion channel system at Bortot Hazaz and a quarry site at Masada yields minimum-limiting age estimates of 2.6 and 1.9 ka, both in accordance with the OSL and relative archaeological dating of the sites. VML dating of a stone artifact from the 11 ka highstand shoreline brackets the timing of the tool abandonment at 10.5–10 ka, suggesting an early Pre-Pottery Neolithic B (10.5–8.25 ka) site occupation in the Dead Sea basin. These geomorphic and archaeological applications demonstrate that the Holocene varnish microstratigraphy documented in this study has great potential as a unique chronometric tool in the Southern Levant.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"352 ","pages":"Article 109146"},"PeriodicalIF":3.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095620","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":"Application bioaerosol records for recovery of atmospheric circulation anomalies over the Kuril islands in the Late Glacial-Holocene","authors":"N.G. Razjigaeva ,&nbsp;L.A. Ganzey ,&nbsp;V.I. Ponomarev ,&nbsp;L.M. Mokhova ,&nbsp;T.A. Grebennikova","doi":"10.1016/j.quascirev.2025.109222","DOIUrl":"10.1016/j.quascirev.2025.109222","url":null,"abstract":"<div><div>The distribution of allochthonous biofossils (pollen and marine diatoms) in peat bogs, paleolake sequences, and paleosils of the Kuril islands was used to determine periods of more active export of bioaerosols to the region over the last 13 000 years and atmospheric circulation anomalies in northwestern Pacific. The Kuril Archipelago, which stretches for 1250 km and separates the Okhotsk Sea from the Pacific Ocean, is one of the key sites for understanding climatic changes in the region. It is easier than to identify taxa that may have been airborne over long distances and to estimate pollen sources in the face of changing landscape boundaries here than on the mainland. The reconstructions are derived from a synthesis of data collected from 27 sites (peat bog and lacustrine sequences) on 19 islands. The information on paleosols from 7 soil-tephra sequceses was used too. It has been shown that a significant portion of long-distance pollen transport originated from the south, specifically the Japanese islands at distances of 500–1000 km. The transport of pollen bioaerosols was particularly enhanced during shifts in atmospheric circulation patterns coincided with warming/cooling transitions and cooling periods. Anomalies in the atmospheric circulation during the spring and summer seasons were identified as the primary factor driving the long-range transport of bioaerosols. The export of distant pollen aerosols intensified in the middle-late Holocene, indicating a general trend of intensification of cyclogenesis and wind regime in the northwestern Pacific Ocean. To analyze winter circulation anomalies, we studied the distribution of pollen of dwarf pine (<em>Pinus pumila</em>) and spores of <em>Selaginella selaginoides</em>, whose development is favored by a thick snow cover. During the Holocene, the occurrence of positive precipitation anomalies on the southern and/or northern islands of the Kuril Ridge were closely related to the intensity, frequency, and tracks of cyclones approaching from the south during the winter season. Records of marine bioaerosol inputs to peat bogs located on the highlands of Rasshua and Ketoi islands, Central Kurils indicates the occurrence of intense storms since ∼8200 yr BP. Severe storms were more frequent during cooling. The identified periods of increased storm activity are compared with storm reconstructions for the western part of the Okhotsk Sea (Shantar islands). We discussed the interaction of atmospheric action centers and potential patterns of atmospheric circulation in the past, drawing insights from current climate changes in the region.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"353 ","pages":"Article 109222"},"PeriodicalIF":3.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134420","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}