Quaternary Science Advances最新文献_第2页

Interacting drivers of Holocene climate change in southwestern Africa: the influence of insolation, rainbelt dynamics and upwelling 西南非洲全新世气候变化的相互作用驱动因素：日照、雨带动力学和上升流的影响

IF 2.2

Quaternary Science Advances Pub Date : 2026-01-01 Epub Date: 2025-12-23 DOI: 10.1016/j.qsa.2025.100312

Brian M. Chase , Andrew S. Carr , Arnoud Boom , Manuel Chevalier , Maarten Blaauw , Michael E. Meadows

{"title":"Interacting drivers of Holocene climate change in southwestern Africa: the influence of insolation, rainbelt dynamics and upwelling","authors":"Brian M. Chase , Andrew S. Carr , Arnoud Boom , Manuel Chevalier , Maarten Blaauw , Michael E. Meadows","doi":"10.1016/j.qsa.2025.100312","DOIUrl":"10.1016/j.qsa.2025.100312","url":null,"abstract":"<div><div>Understanding regional-scale patterns of long-term climate variability is essential for identifying the drivers of past environmental change. In southern Africa, the continent is often divided into three rainfall zones—summer, winter, and aseasonal—but this framework fails to capture the finer dynamics of transitional areas where tropical, subtropical, and temperate systems converge. This study examines Holocene climate variability along the western margin of the southern African monsoon region using a new 7300-year nitrogen isotope record from rock hyrax middens at Omanyne-4 in northern Namibia. Unlike other Namib Desert records that indicate progressive aridification through the Holocene, the Omanyne-4 sequence shows a long-term trend toward increasing humidity, consistent with insolation-driven enhancement of tropical and Indian Ocean moisture advection. Comparisons with records from northern Namibia, Botswana, and western Zambia reveal a coherent pattern of mid-to late Holocene humidification across the northwestern interior, in contrast to coastal aridification. Periods of both in-phase and antiphase variability with other regional records highlight the role of the Angola–Benguela Front and associated upwelling dynamics in modulating Namibian hydroclimate. These results delineate distinct Holocene climate response regions in northern Namibia and Botswana and demonstrate the non-linear nature of regional responses to insolation forcing and underscore the importance of coastal–inland atmospheric interactions in shaping long-term hydroclimate variability in southwestern Africa.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"21 ","pages":"Article 100312"},"PeriodicalIF":2.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145927156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydroclimatic differences over the past 2300 years in arid Central Asia and their potential impacts on human activities revealed by End Member Modelling Analysis of lake sediments 湖泊沉积物末元模拟分析揭示了过去2300年中亚干旱地区的水文气候差异及其对人类活动的潜在影响

IF 2.2

Quaternary Science Advances Pub Date : 2025-12-01 Epub Date: 2025-10-13 DOI: 10.1016/j.qsa.2025.100304

Yingying Wei , Kang'en Zhou , En'guo Sheng , Bin Liu , Jianghu Lan

{"title":"Hydroclimatic differences over the past 2300 years in arid Central Asia and their potential impacts on human activities revealed by End Member Modelling Analysis of lake sediments","authors":"Yingying Wei , Kang'en Zhou , En'guo Sheng , Bin Liu , Jianghu Lan","doi":"10.1016/j.qsa.2025.100304","DOIUrl":"10.1016/j.qsa.2025.100304","url":null,"abstract":"<div><div>The arid Central Asia (ACA) is highly sensitive to global changes, making it critical for climate and environmental change research. Previous studies have demonstrated that the ACA experienced different hydroclimatic conditions during the late Holocene; however, the specific details remain insufficiently explored. In this study, we investigate hydroclimatic variations over the past 2300 years using End Member Modelling Analysis (EMMA) of grain size, combined with multi-proxy indices from Lake Bosten. Our results reveal distinct intervals: two wet intervals during 320–44 BCE (before the Common Era) and 1350–1935 CE (Common Era); and one dry interval during 44 BCE–1350 CE. We propose that NAO (North Atlantic Oscillation) may have influenced these hydroclimatic changes in arid Central Asia. Our findings suggest that wet conditions would favor traditional agricultural activities, thereby promoting the unity and prosperity of ancient cities. In contrast, during the dry interval, nomadic tribes expanded southward, leading to frequent wars and political instability.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"20 ","pages":"Article 100304"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Classic Maya landscape adaptation, agricultural productivity, and political dynamics in the upper Belize River Valley 经典玛雅景观适应，农业生产力，和政治动态上伯利兹河流域

IF 2.2

Quaternary Science Advances Pub Date : 2025-12-01 Epub Date: 2025-08-14 DOI: 10.1016/j.qsa.2025.100295

John P. Walden , Claire E. Ebert , Scott L. Fedick , Jaime J. Awe , Brett Meyer , Leszek Pawlowicz , Tia B. Watkins , Samuel C.M. Hemsley , Olivia P. Ellis , Igor Chechushkov , Patrick Mullins , Frank K. Tzib , Michael Biggie , Shane Montgomery , George J. Micheletti , Rafael A. Guerra , Julie A. Hoggarth

{"title":"Classic Maya landscape adaptation, agricultural productivity, and political dynamics in the upper Belize River Valley","authors":"John P. Walden , Claire E. Ebert , Scott L. Fedick , Jaime J. Awe , Brett Meyer , Leszek Pawlowicz , Tia B. Watkins , Samuel C.M. Hemsley , Olivia P. Ellis , Igor Chechushkov , Patrick Mullins , Frank K. Tzib , Michael Biggie , Shane Montgomery , George J. Micheletti , Rafael A. Guerra , Julie A. Hoggarth","doi":"10.1016/j.qsa.2025.100295","DOIUrl":"10.1016/j.qsa.2025.100295","url":null,"abstract":"<div><div>The upper Belize River Valley of west-central Belize is a complex ecotone where multiple environmental zones converge around the Mopan, Macal, and Belize Rivers. The valley's natural fecundity attracted Preclassic Maya (1200/1100 BCE–CE 300) farmers to the region, fostering population growth and the formation of several Classic (CE 300–900) polities. By the Late Classic (CE 600–900) the valley represented a dense conurbation of settlement focused around four major centers, each of these polities contained numerous intermediate elite headed districts of commoners. Evidence for political disintegration and demographic decline appeared around CE 750, coinciding with increasing drought, culminating in the complete collapse of these polities and a regional demographic crash around CE 1000. In this study, we combine environmental data and agricultural modeling to assess polity- and district-level agrarian productivity in the polities of Baking Pot, Cahal Pech, Lower Dover, and Yaxox. Our agricultural modeling indicates these polities could have generated significant agricultural surpluses under stable climatic conditions and low population density. Increasingly variable climate during the ninth to the eleventh century CE, however, impacted traditional rain fed milpa cultivation on the upland hillslopes in the south of the region, prompting out migration. In contrast, households situated on riverine alluvium appeared to thrive during this period. The case study highlights the importance of understanding environmental factors and agricultural strategies when reconstructing past political dynamics.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"20 ","pages":"Article 100295"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145098162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The travertine deposition of central Italy: The accumulation rate reduction under cooling climate during MIS 3 意大利中部的石灰华沉积：MIS 3期间降温气候下积累速率的降低

IF 2.2

Quaternary Science Advances Pub Date : 2025-12-01 Epub Date: 2025-11-28 DOI: 10.1016/j.qsa.2025.100306

Mauro Brilli , Francesca Giustini , Nicolas Guyennon , Francesca Marchegiani , Stefano Nisi

{"title":"The travertine deposition of central Italy: The accumulation rate reduction under cooling climate during MIS 3","authors":"Mauro Brilli , Francesca Giustini , Nicolas Guyennon , Francesca Marchegiani , Stefano Nisi","doi":"10.1016/j.qsa.2025.100306","DOIUrl":"10.1016/j.qsa.2025.100306","url":null,"abstract":"<div><div>Endogenous travertines are related to fault deformations and climatic conditions which both exert an important control on their deposition. Their study allows us to show the connections between tectonics and climate. The accumulation rates during the MIS 3 time interval (60-30 ka) of three morphologically different deposits of thermogenic travertines from the western sector of central Italy were compared: two large plateaus, Tivoli and Canino, and a much smaller travertine, named Prima Porta Travertine, unearthed in their vicinity. Their chronology was obtained from literature U-Th data. The accumulation rate of these different travertines seems remarkably comparable showing a maximum during 55–46 ka and a sharp decline after 46 ka, which persisted until the end of MIS 3, indicating that it may have been at least a regional-scale event.</div><div>The Prima Porta travertine was here sampled for a high resolution chemical and isotope stratigraphy and <sup>87</sup>Sr/<sup>86</sup>Sr ratios. These data partly strengthened previous results, showing that a sharp, well-defined shift in elemental chemistry is connected to the reduction in the accumulation rate. The C and Sr isotopes showed deep carbon provenance but negligible contribution of deep waters in travertine development. It is argued that the elemental change originates from a decrease in the aquifer recharge rates, following the gradual climate transition to an arid and cold stage. This, in turn, had a clear impact on the hydraulic conductivity of faults and fractures and on the upward migration of deep CO<sub>2</sub> fluids, thus removing the conditions necessary for the carbonate precipitation.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"20 ","pages":"Article 100306"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An optimizing dual-scale TPI framework for enhanced geomorphological classification in plateau and mountainous regions:Gaining deeper insights into topographic effects on forest fires 优化高原和山区地貌分类的双尺度TPI框架：深入了解地形对森林火灾的影响

IF 2.2

Quaternary Science Advances Pub Date : 2025-12-01 Epub Date: 2025-12-03 DOI: 10.1016/j.qsa.2025.100308

Zhichao Huang , Mingshan Wu , Jiangxia Ye , Ruliang Zhou , Wenlong Yang , Shenghao Li , Bingjie Han , Mengting Xue , Shuai He , Xinkun Zhu

{"title":"An optimizing dual-scale TPI framework for enhanced geomorphological classification in plateau and mountainous regions:Gaining deeper insights into topographic effects on forest fires","authors":"Zhichao Huang , Mingshan Wu , Jiangxia Ye , Ruliang Zhou , Wenlong Yang , Shenghao Li , Bingjie Han , Mengting Xue , Shuai He , Xinkun Zhu","doi":"10.1016/j.qsa.2025.100308","DOIUrl":"10.1016/j.qsa.2025.100308","url":null,"abstract":"<div><div>Accurate geomorphological classification is essential for understanding complex terrains and their influence on wildfire behavior. However, conventional methods based on arbitrarily scaled Topographic Position Index (TPI) often fail to capture multi-scale topographic heterogeneity, limiting insight into terrain–fire relationships. This study introduces an optimized dual-scale TPI framework to improve geomorphological mapping and better quantify topographic controls on burn severity. Using a 30 m DEM from southwestern China's challenging plateau-mountain region, we identified optimal TPI scale pairs (21, 23) and (53, 55) via the mean change-point method. Three machine learning models—Random Forest (RF), XGBoost, and DNN—were evaluated, with RF achieving superior accuracy (Acc = 87 %, AUC = 0.93). Feature importance analysis highlighted TPI, surface cutting depth, and slope as key factors. The quantitative analysis of burn severity across landform categories shows that mid-slope ridges exhibit the highest median RdNBR values, whereas deeply incised canyons and upland river-source areas remain within the low-severity range. This research provides a scalable method for optimal TPI selection, significantly enhancing landform classification and offering actionable insights for wildfire risk assessment and management in complex terrains.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"20 ","pages":"Article 100308"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145680920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Late Quaternary thrust faulting along the NW-trending Heya fault in southwestern Tian Shan, NW China 天山西南部晚第四纪逆冲断裂北西走向的鹤牙断裂

IF 2.2

Quaternary Science Advances Pub Date : 2025-12-01 Epub Date: 2025-09-29 DOI: 10.1016/j.qsa.2025.100303

Xiaoyan Liu , Sihua Yuan , Li Zhang , Kezhi Zang , Jinshuo Zhang , Chuanyong Wu

{"title":"Late Quaternary thrust faulting along the NW-trending Heya fault in southwestern Tian Shan, NW China","authors":"Xiaoyan Liu , Sihua Yuan , Li Zhang , Kezhi Zang , Jinshuo Zhang , Chuanyong Wu","doi":"10.1016/j.qsa.2025.100303","DOIUrl":"10.1016/j.qsa.2025.100303","url":null,"abstract":"<div><div>Along both the northern and southern flanks of the Tian Shan orogenic belt, a series of foreland thrust systems have been developed to accommodate N – S crustal shortening. The strikes of these foreland thrust systems are roughly parallel to the mountain range and have usually been viewed as a result of outward expansion of the Tian Shan orogenic belt. However, the NW-striking Heya fault (HYF) in the southern Tian Shan piedmont has been identified, but at present, its late Quaternary kinematics, deformation mechanism and role in regional tectonic deformation are still unclear. In this study, based on interpretations of detailed high-resolution remote sensing images, field investigations, surveys of displaced terraces with an unmanned drone, dating of late Quaternary sediments via optically stimulated luminescence (OSL) and trench excavation, we quantified the structural geometry and determined the ∼0.85 mm/yr crustal shortening rate of the HYF. A survey of the displaced geomorphic surfaces implies that the HYF obeys a characteristic slip model. We suggest that the low-angle thrust HYF is a contractional horsetail structure located near the easternmost end of the Maidan fault and accommodates its left-lateral strike-slip motion.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"20 ","pages":"Article 100303"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Glacial - periglacial transition in the Ratera Cirque (Central Pyrenees) from the Younger Dryas to the Holocene 从新仙女木期到全新世的拉特拉圆环（中部比利牛斯山脉）的冰川-冰缘转变

IF 2.2

Quaternary Science Advances Pub Date : 2025-12-01 Epub Date: 2025-11-29 DOI: 10.1016/j.qsa.2025.100307

Josep Ventura , Marc Oliva , José M. Fernández-Fernández , Marcelo Fernandes , David Palacios , Tancrède Leger , Vincent Jomelli , Aster Team

{"title":"Glacial - periglacial transition in the Ratera Cirque (Central Pyrenees) from the Younger Dryas to the Holocene","authors":"Josep Ventura , Marc Oliva , José M. Fernández-Fernández , Marcelo Fernandes , David Palacios , Tancrède Leger , Vincent Jomelli , Aster Team","doi":"10.1016/j.qsa.2025.100307","DOIUrl":"10.1016/j.qsa.2025.100307","url":null,"abstract":"<div><div>The transition from glacial to deglacial environments in mid-latitude mountains leaves a wide range of landforms of glacial, periglacial and paraglacial origin, of which the chronology and evolution are still debated. This work provides geomorphological and geochronological evidence for the last phases of deglaciation in the Ratera Valley and cirque (upper Noguera Pallaresa Valley-Central Pyrenees) by applying cosmic-ray exposure (CRE) dating to a set of 19 samples from moraine boulders, rock glaciers and glacially polished surfaces. The results indicate the occurrence of several glacial and periglacial phases between the end of Heinrich 1 (HS-1) event and the Mid-Early Holocene. The deglaciation of the Ratera area occurred between ca. 15.3 and 13.4 ka, interrupted by small glacial advances and/or standstills evidenced by the formation of moraine ridges. The moraine complex closing the Ratera Cirque was formed during the Bølling/Allerød (B-A) – Younger Dryas (YD) transition at ca. 12.6–12.4 ka. Later, during the Early Holocene, this glacier developed into a debris-covered glacier, which stabilised at ca. 9.9 ± 0.9 ka. Subsequently, this debris-covered glacier was partly fossilised by a rock glacier consisting of two differentiated units which stabilised at ca. 8.8 ± 0.8 and 5.8 ± 0.6 ka, respectively. Finally, a small debris-free glacier built a moraine ridge at the foot of the cirque wall. Thus, this spatio-temporal pattern of deglaciation of the Ratera Cirque represents a unique case spanning 10 ka, providing evidence of the major environmental changes that followed the disappearance of glaciers in the Pyrenees and demonstrates the importance of past periglacial and paraglacial dynamics in shaping the present-day mountain landscape in this range.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"20 ","pages":"Article 100307"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145680923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microfacies analysis and varve-based chronology reveal a variable 14C reservoir effect in Lake Shira, northern Inner Asia, over the past 2500 years 微相分析和基于变量的年代学揭示了内亚北部示拉湖2500年来变化的14C储层效应

IF 2.2

Quaternary Science Advances Pub Date : 2025-09-01 Epub Date: 2025-09-04 DOI: 10.1016/j.qsa.2025.100299

Christian Leipe , David Handfried , Tengwen Long , Ingo Heinrich , Philipp Hoelzmann , Jens Mingram , Rik Tjallingii , Johannes C. Vrijmoed , Mayke Wagner , Pavel E. Tarasov

{"title":"Microfacies analysis and varve-based chronology reveal a variable 14C reservoir effect in Lake Shira, northern Inner Asia, over the past 2500 years","authors":"Christian Leipe , David Handfried , Tengwen Long , Ingo Heinrich , Philipp Hoelzmann , Jens Mingram , Rik Tjallingii , Johannes C. Vrijmoed , Mayke Wagner , Pavel E. Tarasov","doi":"10.1016/j.qsa.2025.100299","DOIUrl":"10.1016/j.qsa.2025.100299","url":null,"abstract":"<div><div>Here, we present the first fully varve-based chronology for the deposits of the deep-water Lake Shira (Chulym-Yenisei Basin, South Siberia), derived from a new sediment core. The very well-preserved varves show typical properties of the clastic-biogenic and endogenic types that can be subdivided into four sublayers representing winter–early spring, late spring, early summer and late summer–autumn. The analysed sediment section of 147 cm length comprises 2491 varve years with a total counting error of 1.6 % (i.e. ±40 years), making the new sediment core from Lake Shira a unique high-resolution archive for multi-proxy studies of past climate/environmental change and human-environment interactions. Direct comparison of nine AMS radiocarbon (<sup>14</sup>C) dates based on sediment bulk organic fractions with an age-depth model based on varve counting made it possible to examine the <sup>14</sup>C reservoir effect in the lake. The reservoir effect is a common issue when estimating the age of environmental proxies from lacustrine sedimentary archives in Inner Asia. Although a constant reservoir effect is commonly used to correct the <sup>14</sup>C dates from a single core or lake basin, our results from Lake Shira demonstrate that it varies significantly over the last 2500 years, ranging from 240 ± 30 to 1045 ± 30 years. The spatiotemporal variability of the reservoir effect can considerably reduce the accuracy of age-depth models based solely on the bulk organic sediment fraction. Where varved sediment is unavailable, as is usually the case, lignin phenols, terrestrial plant remains and purified pollen concentrates should be considered as alternative dating materials.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"19 ","pages":"Article 100299"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144988474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soil-alluvial dynamics, landscape evolution and human activity in the Thaya river floodplain (Czech Republic) from the Late Pleistocene to the Holocene 晚更新世至全新世捷克塔雅河漫滩土壤冲积动力学、景观演化与人类活动

IF 2.9

Quaternary Science Advances Pub Date : 2025-09-01 Epub Date: 2025-07-07 DOI: 10.1016/j.qsa.2025.100287

Katarína Adameková , Michaela Prišťáková , Nela Doláková , Petr Dresler , Slavomír Nehyba , Pavel Dlapa , Kristína Majorošová , Ivo Světlík

{"title":"Soil-alluvial dynamics, landscape evolution and human activity in the Thaya river floodplain (Czech Republic) from the Late Pleistocene to the Holocene","authors":"Katarína Adameková , Michaela Prišťáková , Nela Doláková , Petr Dresler , Slavomír Nehyba , Pavel Dlapa , Kristína Majorošová , Ivo Světlík","doi":"10.1016/j.qsa.2025.100287","DOIUrl":"10.1016/j.qsa.2025.100287","url":null,"abstract":"<div><div>The development of the Thaya River floodplain has been shaped by interactions between fluvial dynamics, soil formation, and human activity. To better understand these processes, we conducted geoarchaeological research, including sedimentological, micromorphological, geochemical, palynological and chronological analyses of soil-alluvial sequence at Pohansko site spanning from the Late Pleistocene to the present. We identified four distinct soils, each formed during periods of relative landscape stability. Fluvisol 4 developed in the Mesolithic (Early Holocene), when the Thaya River floodplain was dominated by oak-lime-hornbeam forests, showing no evidence of deforestation. Fluvisol 3 formed in the later phase of the Neolithic (Middle Holocene), when the increasing presence of cereals and ruderal taxa suggests agricultural expansion. From the Young/Late Bronze Age to the Early Medieval period (Late Holocene), Fluvisol 2 developed, with a significant reduction of synanthropic plants and an increasing presence of pioneer species during the Bronze Age, indicating limited human activity. A peak in deforestation in the soil corresponds with expansion of the Great Moravian Empire, which is also linked with significant increase in nitrogen-loving herbs. The pollen spectra indicate decline in softwood, pines, ferns, hygrophilous and aquatic plants, while an increase in meadow areas. Geoarchaeological evidence further reveals that the modification of a channel near fortification probably in the same period, potentially serving both as a defensive feature and a source of construction material. While soil development was primarily driven by natural processes outside sandy elevation, further analyses are needed to clarify the relative influence of climate and human activity on floodplain dynamics.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"19 ","pages":"Article 100287"},"PeriodicalIF":2.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Paleoseismological evidence of a century of coastal deformation in central Chile: lasting emergence and ongoing submergence 智利中部一个世纪海岸变形的古地震学证据：持续的出现和持续的淹没

IF 2.2

Quaternary Science Advances Pub Date : 2025-09-01 Epub Date: 2025-08-12 DOI: 10.1016/j.qsa.2025.100291

Bladimir Saldaña , Marco Cisternas , Matías Carvajal , Daniel Melnick , Joaquín Cortés-Aranda , Jean Pierre Francois , Alexandra Carreño , Mario Guerra

{"title":"Paleoseismological evidence of a century of coastal deformation in central Chile: lasting emergence and ongoing submergence","authors":"Bladimir Saldaña , Marco Cisternas , Matías Carvajal , Daniel Melnick , Joaquín Cortés-Aranda , Jean Pierre Francois , Alexandra Carreño , Mario Guerra","doi":"10.1016/j.qsa.2025.100291","DOIUrl":"10.1016/j.qsa.2025.100291","url":null,"abstract":"<div><div>Understanding vertical deformation associated with cycles of great megathrust earthquakes is crucial for assessing coastal hazards and advancing in our knowledge of tectonic processes in subduction zones. However, this requires long datasets that extend beyond the era of space geodesy. Here, we use paleoseismological evidence, including lithological and paleoecological data, from a former coastal lagoon in central Chile to reconstruct land-level changes during the 20th century, spanning two great (M ≥ 8) megathrust earthquakes in 1906 and 1985. Diatom and seed assemblages across an abrupt lithological change from mud to peat recorded a sudden relative sea level (RSL) fall in the early 20th century. This environmental shift correlates with the disappearance of the lagoon between 1904 and 1914 as documented in historical maps, revealing an emergence event most likely associated with ∼0.7 m of coseismic uplift in 1906. For the following eight decades, diatoms suggest relatively stable RSL conditions, implying that the coast remained emerged. This is partially supported by the record of a nearby tide gauge showing relatively stable RSL between 1944 and the mid-1980s. Around the time of the 1985 earthquake, both diatoms and tide gauge records suggest the onset of a gradual RSL rise. The inferred long-term trend aligns with modern GPS measurements showing persistent coastal subsidence since 1997 until today. This multiproxy RSL history reveals a more complex vertical deformation pattern than previosuly assumed in the central Chile subduction zone, with subsidence starting eight decades after sustained post-1906 uplift. Our findings provide key insights into the vertical deformation cycles of great subduction zone earthquakes in central Chile and elsewhere.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"19 ","pages":"Article 100291"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144865850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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