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Letteratura scientifica selezionata sul tema "Quaternary climate change"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 6 febbraio 2022

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Articoli di riviste sul tema "Quaternary climate change"

Adams, Jonathan, Mark Maslin e Ellen Thomas. "Sudden climate transitions during the Quaternary". Progress in Physical Geography: Earth and Environment 23, n. 1 (marzo 1999): 1–36. http://dx.doi.org/10.1177/030913339902300101.

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The time span of the past few million years has been punctuated by many rapid climate transitions, most of them on timescales of centuries to decades. The most detailed information is available for the Younger Dryas-to-Holocene stepwise change around 11 500 years ago, which seems to have occurred over a few decades. The speed of this change is probably representative of similar but less well studied climate transitions during the last few hundred thousand years. These include sudden cold events (Heinrich events/stadials), warm events (interstadials) and the beginning and ending of long warm phases, such as the Eemian interglacial. Detailed analysis of terrestrial and marine records of climate change will, however, be necessary before we can say confidently on what timescale these events occurred; they almost certainly did not take longer than a few centuries. Various mechanisms, involving changes in ocean circulation and biotic productivity, changes in atmospheric concentrations of greenhouse gases and haze particles, and changes in snow and ice cover, have been invoked to explain sudden regional and global transitions. We do not know whether such changes could occur in the near future as a result of human effects on climate. Phenomena such as the Younger Dryas and Heinrich events might only occur in a ‘glacial’ world with much larger ice sheets and more extensive sea-ice cover. A major sudden cold event, however, did probably occur under global climate conditions similar to those of the present, during the Eemian interglacial around 122 000 years ago. Less intensive, but significant rapid climate changes also occurred during the present (Holocene) interglacial, with cold and dry phases occurring on a 1500-year cycle, and with climate transitions on a decade-to-century timescale. In the past few centuries, smaller transitions (such as the ending of the Little Ice Age at about AD 1650) probably occurred over only a few decades at most. All evidence indicates that long-term climate change occurs in sudden jumps rather than incremental changes.

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Preusser, Frank, e Dirk Radies. "Quaternary climate change in south-eastern Arabia". PAGES news 14, n. 1 (aprile 2006): 38–39. http://dx.doi.org/10.22498/pages.14.1.38.

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Ogola, Christine A. "Eastern African Quaternary Climate change and variability". Past Global Changes Magazine 22, n. 1 (aprile 2014): 53. http://dx.doi.org/10.22498/pages.22.1.53.

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Olson, Carolyn. "The Soil Record of Quaternary Climate Change". Quaternary International 162-163 (marzo 2007): 1–2. http://dx.doi.org/10.1016/j.quaint.2006.11.010.

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Weigelt, Patrick, Manuel Jonas Steinbauer, Juliano Sarmento Cabral e Holger Kreft. "Late Quaternary climate change shapes island biodiversity". Nature 532, n. 7597 (30 marzo 2016): 99–102. http://dx.doi.org/10.1038/nature17443.

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Darling, W. G. "The isotope hydrology of quaternary climate change☆". Journal of Human Evolution 60, n. 4 (aprile 2011): 417–27. http://dx.doi.org/10.1016/j.jhevol.2010.05.006.

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Claussen, M. "Late Quaternary vegetation – climate feedbacks*". Climate of the Past Discussions 5, n. 1 (24 febbraio 2009): 635–70. http://dx.doi.org/10.5194/cpd-5-635-2009.

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Abstract. Feedbacks between vegetation and other components of the climate system are discussed with respect to their influence on climate dynamics during the late Quaternary, i.e., the last glacial – interglacial cycles. When weighting current understanding based on interpretation of palaeobotanic and palaeoclimatic evidence by numerical climate system models, a number of arguments speak in favour of vegetation dynamics being an amplifier of orbital forcing. (a) The vegetation – snow albedo feedback in synergy with the sea ice – albedo feedback tends to amplify Northern Hemisphere and global mean temperature changes. (b) Variations in the extent of the largest desert on Earth, the Sahara, appear to be amplified by biogeophysical feedback. (c) Biogeochemical feedbacks in the climate system in relation to vegetation migration are supposed to be negative on time scales of glacial cycles. However, with respect to changes in global mean temperature, they are presumably weaker than the positive biogeophysical feedbacks.

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Claussen*, M. "Late Quaternary vegetation-climate feedbacks". Climate of the Past 5, n. 2 (3 giugno 2009): 203–16. http://dx.doi.org/10.5194/cp-5-203-2009.

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Abstract. Feedbacks between vegetation and other components of the climate system are discussed with respect to their influence on climate dynamics during the late Quaternary, i.e., the last glacial-interglacial cycles. When weighting current understanding based on interpretation of palaeobotanic and palaeoclimatic evidence by numerical climate system models, a number of arguments speak in favour of vegetation dynamics being an amplifier of orbital forcing. (a) The vegetation-snow albedo feedback in synergy with the sea-ice albedo feedback tends to amplify Northern Hemisphere and global mean temperature changes. (b) Variations in the extent of the largest desert on Earth, the Sahara, appear to be amplified by biogeophysical feedback. (c) Biogeochemical feedbacks in the climate system in relation to vegetation migration are supposed to be negative on time scales of glacial cycles. However, with respect to changes in global mean temperature, they are presumably weaker than the positive biogeophysical feedbacks.

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Webb III, Thompson, Katherine H. Anderson, Patrick J. Bartlein e Robert S. Webb. "Late quaternary climate change in eastern North America". Quaternary Science Reviews 17, n. 6-7 (aprile 1998): 587–606. http://dx.doi.org/10.1016/s0277-3791(98)00013-4.

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Ogola, Christine, Asfawossen Asrat, Stephen Rucina e Elgidius B. Ichumbaki. "Equatorial eastern Africa: Quaternary climate change and variability". Quaternary International 369 (maggio 2015): 1–2. http://dx.doi.org/10.1016/j.quaint.2015.04.012.

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Più fonti

Tesi sul tema "Quaternary climate change"

Chevalier, Manuel. "Quantified Reconstructions of late Quaternary southern African Climate Change". Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS281.

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Pas de résumé en français
Southern African drylands are not suited for the application of climate reconstruction methods based on surface samples. Methods based on the co-existence approach, while still in their early days, are really promising, particularly those using probability density functions (pdfs) that have proven particularly valuable in certain cases as they can be applied to a wide range of plants assemblages. Most commonly applied to fossil pollen data, their performance can be limited by the taxonomic resolution of the pollen data, as many species may belong to a given pollen-type. Consequently, climate information associated with a taxon cannot always be precisely identified, resulting in less accurate reconstructions. This can become particularly problematic in regions of high biodiversity, such as southern African botanical hotspots. The first part of this PhD thesis presents the development of a novel pdf-based climate reconstruction method adapted to the southern African context. The method, which comes along with a dedicated software pack- age entitled CREST, sorts out this diversity issue by taking into account the different climatic requirements of each species constituting the broader pollen-type: pdfs are fitted in two successive steps, with parametric univariate pdfs fitted first for each species (pdfsp) followed by a combination of those individual species pdfs into a broader single pdf to represent the pollen-type as a unit (pdfpol). The curve resulting from the multiplication of the pdfpol describes the likelihood of different climate parameters based on the co-existence of a given set of taxa, each being weighted according to its normalized pollen percentage. Three majors properties were derived from this continental-scale statistical analysis: 1) the method saturates when the number of species composing a pollen type becomes larger than 30-40 species, 2) the per- formance decreases with distance to the core of the climatic space and 3) climate variables that have a direct impact of plant life cycles are better reconstructed.We revisited 13 pollen sequences (selection based on their length, continuity, chronology and pollen diversity) from southern African literature with the CREST method. To offset the limited individual potential of those sequences, we developed a Monte-Carlo framework to create interpolated curves integrating uncertainties associated with the reconstructions and age-depth models and then stack those curves together to extract regionally consistent patterns. This reanalysis allows for the quantified reconstruction of a range of distinct climatic variables from this critical region, and provides significant insight into the nature of long-term climate change. Temperature reconstructions show strong coherency among all sites considered, and parallel southwest Indian Ocean SSTs. Reconstructions of the amount of summer precipitation since mid-MIS 3 (Marine Isotope Stage 3) 45,000 years ago indicate a dichotomy in the precipitation pattern between interior and northeastern South African sites. At the glacial-interglacial timescale, precipitation in northeastern sites shows strong similarities with the Indian Ocean SST records as well as with records from the large East African lakes. Entering the Holocene, precessional forcing becomes more important and a north/south rainfall dipole appears, with a demarcation line located somewhere between Lakes Tanganyika and Malawi (3-9°S). Sites from the interior, while clearly following a similar dynamic, also appear to be sensitive to additional factors, including the position of the southern Westerlies, which may interact with tropical systems to create tropical-temperate troughs. Our results shed light on the complexity of the mechanisms driving South African rainfall, and clarify several key elements of the current debate, including limitations of models relying on direct insolation forcing to explain long-term climate dynamics

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余耀良 e Yiu-leung Yieu. "OSL dating of sediment and climate change of late quaternary". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/192989.

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The objective of this project is to apply the Optical Stimulated Luminescence (OSL) technique to date the palaeo sediment from Mu Us Desert, part of the Inner Mongolia in northern China and reconstruct the palaeo environment. Five OSL samples were collected from Dagouwan, Salawusu River Valley at Inner Mongolia by Dr S. H. Li and his team in 2009. Extraction of 150μm to 180μm silt-size feldspar from collected dune sand, lacustrine facies and fluvial facies samples and running of luminescence dating therefore to obtain the age from 50ka to 90ka. Climate proxies - magnetic susceptibility, grain size, fossil vertebrates and fossil pollens have been analyzed and it is concluded that significant climate change occurred within this period, which change from domination of warm, humid and rainy summer monsoons (before 70ka) to cold, wind, windy strengthened dry winter wind and back to warm and humid again after 55ka.
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Applied Geosciences
Master
Master of Science

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Bostonalieva, Zhyldyz Kubatalievna [Verfasser]. "Late Quaternary Climate Change in Western Eurasia : A spatio-temporal review of climate proxies / Zhyldyz Kubatalievna Bostonalieva". Berlin : Freie Universität Berlin, 2015. http://d-nb.info/1068209399/34.

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Bergner, Andreas G. N. "Lake-level fluctuations and Late Quaternary climate change in the Central Kenya Rift". Phd thesis, Universität Potsdam, 2003. http://opus.kobv.de/ubp/volltexte/2005/107/.

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Diese Arbeit beschäftigt sich mit der Rekonstruktion von Klima in historischen Zeiten im tropischen Ostafrika. Nach einer Übersicht über die heutigen klimatischen Bedingungen der Tropen und den Besonderheiten des ostafrikanischen Klimas, werden die Möglichkeiten der Klimarekonstruktion anhand von Seesedimenten diskutiert. Es zeigt sich, dass die hoch gelegenen Seen des Zentralen Keniarifts, als Teil des Ostafrikanischen Grabensystems, besonders geeignete Klimaarchive darstellen, da sie sensibel auf klimatische Veränderungen reagieren. Veränderungen der Seechemie, wie sie in den Sedimenten aufgezeichnet werden, eignen sich um die natürlichen Schwankungen in der Quartären Klimageschichte Ostafrikas nachzuzeichnen. Basierend auf der guten 40Ar/39Ar- und 14C-Datierbarkeit der Seesedimente wird eine Chronologie der paläoökologischen Bedingungen anhand von Diatomeenvergesellschaftungen restauriert. Dabei zeigen sich für die Seen Nakuru, Elmenteita und Naivasha kurzfristige Transgression/ Regressions-Zyklen im Intervall von ca. 11.000 Jahren während des letzten (ca. 12.000 bis 6.000 J.v.H.) und vorletzten Interglazials (ca. 140.000 bis 60.000 J.v.H.). Zusätzlich kann ein allgemeiner, langfristiger Trend der Seeentwicklung von großen Frischwasserseen hin zu stärker salinen Gewässern innerhalb der letzen 1 Mio. Jahre festgestellt werden. Mittels Transferfunktionen und einem hydro-klimatischen Modellansatz können die restaurierten limnologischen Bedingungen als klimatische Schwankungen des Einzugsgebietes interpretiert werden. Wenngleich auch der zusätzliche Einfluss von tektonischen Veränderungen auf das Seeeinzugsgebiet und das Gewicht veränderter Grundwasserströme abgewogen werden, zeigt sich, dass allein geringfügig erhöhte Niederschlagswerte von ca. 30±10 % zu dramatischen Seespiegelanstiegen im Zentralen Keniarift führen. Aufgrund der etablierten hydrrologisch-klimatischen Wechselwirkungen werden Rückschlüsse auf die natürliche Variabilität des ostafrikanischen Klimas gezogen. Zudem wird die Sensitivität der Keniarift-Seen in Bezug auf die Stärke der äquatorialen Insolation und hinsichtilch variabler Oberflächenwassertemperaturen des Indischen Ozeans bewertet.
In this work, an approach of paleoclimate reconstruction for tropical East Africa is presented. After giving a short summary of modern climate conditions in the tropics and the East African climate peculiarity, the potential of reconstructing climate from paleolake sediments is discussed. As demonstrated, the hydrologic sensitivity of high-elevated closed-basin lakes in the Central Kenya Rift yields valuable guaranties for the establishment of long-term climate records. Temporal fluctuations of the limnological characteristics saved in the lake sediments are used to define variations in the Quaternary climate history. Based on diatom analyses in radiocarbon- and 40Ar/39Ar-dated sediments, a chronology of paleoecologic fluctuations is developed for the Central Kenya Rift -lakes Nakuru, Elmenteita and Naivasha. At least during the penultimate interglacial (around 140 to 60 kyr BP) and during the last interglacial (around 12 to 4 kyr BP), these lakes experienced several transgression-regression cycles on time intervals of about 11,000 years. Additionally, a long-term trend of lake evolution is found suggesting the general succession from deep freshwater lakes towards more saline waters during the last million years. Using ecologic transfer functions and a simple lake-balance model, the observed paleohydrologic fluctuations are linked to potential precipitation-evaporation changes in the lake basins. Though also tectonic influences on the drainage pattern and the effect of varied seepage are investigated, it can be shown that already a small increase in precipitation of about 30±10 % may have affected the hydrologic budget of the intra-rift lakes within the reconstructed range. The findings of this study help to assess the natural climate variability of East Africa. They furthermore reflect the sensitivity of the Central Kenya Rift -lakes to fluctuations of large-scale climate parameters, such as solar radiation and sea-surface temperatures of the Indian Ocean.

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Kronborg, Pelle. "Identifying Quaternary Climate Change with XRF Analysis on Loess From South-Western England". Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412179.

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Huge changes in climate occurred at the end of the last Quaternary glaciation. The end of this glaciation corresponds with the end of Pleistocene with its repeated glacial cycles and the start of the current geological epoch, the Holocene interglacial. The climate at this time was characterized by increasing temperatures and an increase in rainfall. This project focuses on understanding and examining these changes in climate using loess deposits from south-western England. Loess is an aeolian sediment and covers around 10 % of the Earth’s land surface and these deposits are excellent archives of past climate. Investigating loess can give understanding of past regional and local wind circulation patterns, atmospheric dustiness as well as weathering conditions. Studying paleoclimate is important since studying and understanding trends in past climate can increase our understanding of how the climate will change in the future. This study examined loess from two sites in south-western England, Porth Cressa and Lowland Point. These are relatively thin deposits; Lowland Point has a thickness of 180 cm and Porth Cressa has a thickness of 97 cm. England lacks the thick loess deposits that can be found in other parts of the world and thus the study of English loess has mostly been neglected. These deposits thus could contain unutilized information about paleoclimate. The elemental composition of the samples was examined using X-Ray Fluorescence (XRF). With the measured elemental composition, it’s possible to use weathering indices to see trends in postdepositional weathering. Low weathering intensities indicate a colder and drier climate, while higher weathering intensities indicate a warmer and more humid climate. The results from the weathering indices were plotted against depth at the two sites to identify changes in weathering and hence climate over time. Compared with the results from previous studies the results from some weathering indices seemed credible. Previous studies have indicated that the Chemical Proxy of Alteration (CPA) is the most appropriate weathering index for loess and the results from this study supports that theory. The results from the CPA show a trend with decreasing weathering intensities followed by a trend with increasing weathering intensities This implies that there was a period with decreasing temperatures/humidity followed by a period with increasing temperature humidity sometime at the end of the last glaciation. The geochemical data also showed support for a previous archaeological theory that there has been human reworking in the upper horizons at Lowland Point.
Slutet av den sista kvartära glaciationen var en tid med stora klimatförändringar. Denna tid sammanfaller med slutet av Pleistocene och dess glaciära cyklar samt starten på den nuvarande geologiska epoken, Holocen. Klimatet vid den här tiden karaktäriserades av ökande temperaturer och ökande nederbörd. Det här projektet fokuserar på att granska och förstå dessa klimatförändringar med hjälp av lössjordar från sydvästra England. Löss bildas av vindburet sediment och täcker ungefär 10 % av jordens landyta, dessa avlagringar är utmärkta arkiv för historiskt klimat. Att undersöka lössjordar kan ge information om historiska regionala och lokala vindcirkulations-mönster, vittringsförhållanden samt mängden damm i atmosfären. Att undersöka paleoklimat är viktigt då förståelse för trender i tidigare klimat kan ge oss förståelse för hur klimatet kommer förändras i framtiden. Den här studien undersökte löss från två platser i sydvästra England, Lowland Point och Porth Cressa. Dessa avlagringar är relativt tunna; Lowland Point har en tjocklek på 180 cm och Porth Cressa har en tjocklek på 97 cm. England har inte de tjocka lössavlagringarna som går att hitta i andra delar av världen och därför har lite forskning utförts på brittiskt löss. Dessa avlagringar kan alltså innehålla oanvänd information om paleoklimat. Provernas grundämnessammansättning undersöktes med X-Ray Fluorescence (XRF). Med den uppmäta grundämnessammansättningen är det möjligt att använda vittringsindex för att se trender i vittring efter deposition. En låg vittringsintensitet indikerar ett kallare och torrare klimat medan en högre vittringsintensitet indikerar ett varmare och fuktigare klimat. Resultaten plottades mot djup för att visuellt identifiera förändringar i klimatet över tid. Vid jämförelse med tidigare studier verkade resultaten från vittringsindexen trovärdiga. Tidigare studier har föreslagit att CPA (Chemical Proxy of Alteration) är det mest lämpliga vittringsindexet för lössjordar och resultaten från denna studie stödjer den teorin. Resultaten från CPA visade på en trend med minskade vittringsintensitet följt av en trend med ökande vittrings intensitet. Detta antyder att det var en period med minskande temperatur/fuktighet följt av en period med ökande temperatur/fuktighet runt slutet av den senaste istiden. De geokemiska resultaten stödde också den tidigare arkeologiska teorin att mänsklig aktivitet har påverkat de övre horisonterna vid Lowland Point.

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Walker, Angela Jane. "Rhyolite volcanism at Öræfajökull volcano, S.E. Iceland : a window on Quaternary climate change". Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/rhyolite-volcanism-at-oraefajokull-volcano-se-iceland--a-window-on-quaternary-climate-change(c00888e4-53a6-4fd0-ad54-110be2a42952).html.

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Öræfajökull is an ice-capped stratovolcano situated in the south east of Iceland which has developed throughout the mid to late Quaternary. It has erupted basaltic and rhyolitic lavas during interglacial and glacial periods, many of which display strong physical evidence of volcano-ice interaction. This makes Öræfajökull an ideal location to reconstruct terrestrial palaeo-environments. The area of Goðafjall and Hrútsfjall is one of a small number of rhyolitic depositional centres situated on the south west flanks of the volcano and is the first rhyolitic area of Öræfajökull to be mapped in detail.The relatively high K content of the rhyolitic units make them good candidates for 40Ar/39Ar dating, yielding eruption ages that provide a temporal constraint on the development of the stratovolcano. 40Ar/39Ar dating of young rocks (<1 My) is challenging and many of the samples were found to contain both excess and atmospheric argon. A small number exhibited a fractionated argon source with a sub-atmospheric 40Ar/36Ar ratio that could not be explained by a single episode of mass fractionation. Soret thermal diffusion has been suggested as a possible mechanism for fractionation, although further investigation is required.Two dominant rhyolite eruptions have been identified by detailed field mapping supported by the geochemical application of chemostratigraphy. The stratigraphically lower group of lavas outcrop between 100 to 380 m.a.s.l. and were erupted subaerially into a relatively ice-free environment at the base of the edifice. A 40Ar/39Ar age of 202 ± 9 ka implies that eruption occurred during the interglacial MIS 7. Conversely the upper group of lavas show strong evidence of volcano-ice interaction, suggesting that they were erupted subglacially and confined by ice with a minimum ice surface elevation of at least 800 m.a.s.l. These lavas yield a 40Ar/39Ar age of 116 ± 14 ka, which implies that eruption occurred during the transitional period between the MIS5e interglacial and colder sub-stages prior to MIS 4.At least two further glacial advances have occurred since the emplacement of the subglacial rhyolite unit. In addition, an ice confined trachydacite flow from the Vatnafjall ridge situated 20 km north east of Goðafjall has also been dated yielding a 40Ar/39Ar age of 95 ± 7 k. This lava was emplaced at an elevation of over 700 m in the presence of an adjacent valley fill glacier was at least 700 m thick.Ice thickness has varied dramatically throughout the evolution of Öræfajökull and glacial erosion has played an important role in its topographic development.

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McGarry, Siobhan Frances. "Multi-proxy Quaternary palaeoenvironmental records from speleothem pollen and organic acid fluorescence". Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341161.

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Higginson, Matthew James. "Chlorin pigment stratigraphy as a new and rapid palaeoceanographic proxy in the quaternary". Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310592.

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DeJong, Benjamin D. "Effects of Quaternary Climate Change on Tributary Sedimentation and Geomorphology in Eastern Grand Canyon". DigitalCommons@USU, 2007. https://digitalcommons.usu.edu/etd/6752.

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Climate variability has had a dramatic impact on eastern Grand Canyon tributaries over the past -100 ky. This is readily observed in the Lava Chuar and Comanche catchments, which host well preserved colluvial remnants and river terraces that resulted from several climate-induced cycles of aggradation and incision. This study investigates these climate responses using surveying, sedimentology, and luminescence geochronology methods to investigate the mechanisms and timing of their deposition. The survey data demonstrate that the concavity of terrace treads is lower than modern drainages. The sedimentology suggests the prevalence of stream-flow reworking of debris flow deposits and portrays an expected down-stream fining of deposits. Results of geochronology indicate that Lava Chuar Creek aggraded from -100-90 ka (S4), 61-55 ka (S3o), 50-35 ka (S3y), and 14-7 ka (S2). Comanche Creek similarly aggraded twice during the time period from 77-35 ka (S3) and also from 26-22 ka (S2). The response of eastern Grand Canyon tributaries to glacial-interglacial climate cycling appears to be more complicated than formerly thought. Previous conceptual models assumed that stream aggradation in arid settings occurred as a response to one specific set of climatic and biologic conditions, but new field data and luminescence dates on terrace materials reveal that there are at least two sets of conditions that were conducive to aggradation along local streams. First, streams aggraded during cooler, wetter climates, which is inferred to be due to increased sediment supply (e.g. S4 and S3y in Lava Chuar). With the transition to warmer interglacial climates came higher intensity storms and decreased vegetation density in catchments, based on previous paleoclimate studies. These conditions caused remobilization and redeposition of older sediment and resulted in a second set of stream aggradation phases (e.g. S3o and S2 in Lava Chuar). Meanwhile, the Colorado River aggraded only once per climate cycle during glacial advances and subsequent climate transitions. Thus, tributaries have responded more frequently and more sensitively to changing local conditions compared to the relatively insensitive Colorado River. This is supported by tighter correlation of tributary records to trends in regional paleoclimate records than to global ice records.

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Candy, Ian. "Quaternary climate change and landform development in southeast Spain : U-series dating of calcretes". Thesis, University of Reading, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414519.

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Più fonti

Libri sul tema "Quaternary climate change"

Quaternary environmental change in the tropics. Hoboken, NJ: Wiley, 2012.

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Quaternary loesses, loess-like sediments, soils and climate change in Iran. Stuttgart: Gebrüder Borntraeger, 2010.

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Eisner, Wendy Rose. Climate change and spatial diversity of vegetation during the late Quaternary of Beringia. Utrecht: Koninklijk Nederlands Aardrijkskundig Genootschap, 1999.

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Eisner, Wendy Rose. Climate change and spatial diversity of vegetation during the late quaternary of Beringia. Utrecht: Koninklijk Nederlands Aardrijkskundig Genootschap/Faculteit Ruimtelijke Wetenschappen Universiteit Utrecht, 1999.

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Eisner, Wendy Rose. Climate change and spatial diversity of vegetation during the late Quaternary of Beringia. Utrecht: Koninklijk Nederlands Aardrijkskundig Genootschap, 1999.

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Irish Quaternary Association (1988 Dublin). Causes and indicators of quaternary climate change: Extended abstracts/articles of a symposium. Cork: Department of Geography,University College, 1989.

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Ice Age earth: Late Quaternary geology and climate. London: Routledge, 1992.

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International Conference on Quaternary Deserts and Climatic Change (1995 ʻAyn, United Arab Emirates). Quaternary deserts and climatic change: Proceedings of the International Conference on Quaternary Deserts and Climatic Change : al Ain, United Arab Emirates, 9-11 December 1995. Rotterdam: A.A. Balkema, 1998.

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International Union for Quaternary Research. e Association sénégalaise pour l'étude du quaternaire africain., a cura di. Changements globaux en Afrique durant le quaternaire: Passé, présent, futur : Dakar 21-28 avril 1986. Paris: Editions de l'ORSTOM, 1986.

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Conference, IGCP 396 (Project). 3rd Annual Conference of International Geological Correlation Programme IGCP 396, the record of the quaternary on the continental shelves, their interpretation, correlation, and application, 26-31 October, 1998: Abstracts. Dona Paula, Goa: National Institute of Oceanography, Council of Scientific Industrial Research, 1998.

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Capitoli di libri sul tema "Quaternary climate change"

Colinvaux, Paul A., e Kam-biu Liu. "The Late-Quaternary Climate of the Western Amazon Basin". In Abrupt Climatic Change, 113–22. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3993-6_10.

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Hastenrath, Stefan. "Contemporary Climate and Circulation of the Tropics". In Quaternary Environmental Change in the Tropics, 34–43. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118336311.ch2.

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Winkler, Marjorie Green. "Late Quaternary Climate, Fire, and Vegetation Dynamics". In Sediment Records of Biomass Burning and Global Change, 329–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-59171-6_15.

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Brook, Barry W., e Anthony D. Barnosky. "Quaternary Extinctions and Their Link to Climate Change". In Saving a Million Species, 179–98. Washington, DC: Island Press/Center for Resource Economics, 2012. http://dx.doi.org/10.5822/978-1-61091-182-5_11.

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Ferrusquía-Villafranca, Ismael, Joaquín Arroyo-Cabrales, Eileen Johnson, José Ruiz-González, Enrique Martínez-Hernández, Jorge Gama-Castro, Patricia de Anda-Hurtado e Oscar J. Polaco. "Quaternary Mammals, People, and Climate Change: A View from Southern North America". In Climate Change and Human Responses, 27–67. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1106-5_3.

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Lorrey, A. M., e H. Bostock. "The Climate of New Zealand Through the Quaternary". In Landscape and Quaternary Environmental Change in New Zealand, 67–139. Paris: Atlantis Press, 2016. http://dx.doi.org/10.2991/978-94-6239-237-3_3.

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Labeyrie, L., J. Cole, K. Alverson e T. Stocker. "The History of Climate Dynamics in the Late Quaternary". In Paleoclimate, Global Change and the Future, 33–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55828-3_3.

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Knight, Jasper, e Jennifer M. Fitchett. "Climate Change During the Late Quaternary in South Africa". In World Regional Geography Book Series, 37–45. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94974-1_5.

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Sowers, Janet M. "Correlating Quaternary Landforms and Deposits to Global Climate Change". In AGU Reference Shelf, 425–26. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/rf004p0425.

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Oldfield, Frank. "Forward to the past: changing approaches to Quaternary palaeoecology". In Climate Change and Human Impact on the Landscape, 13–21. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-010-9176-3_2.

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Atti di convegni sul tema "Quaternary climate change"

Springer, Kathleen B., e Jeffrey S. Pigati. "THE REGIONAL HYDROLOGIC RESPONSE OF DESERT WETLANDS IN THE AMERICAN SOUTHWEST TO QUATERNARY CLIMATE CHANGE". In 116th Annual GSA Cordilleran Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020cd-347355.

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Konovalov, A. D., V. V. Pavlichenko, D. A. Orlova, E. D. Zolotovskaya e M. V. Protopopova. "CURRENT PHYLOGEOGRAPHIC STRUCTURE OF WALDSTEINIA TERNATA (STEPH.) FRITSCH AS A REFLECTION OF QUATERNARY GLOBAL CLIMATE CHANGE". In The All-Russian Scientific Conference with International Participation and Schools of Young Scientists "Mechanisms of resistance of plants and microorganisms to unfavorable environmental". SIPPB SB RAS, 2018. http://dx.doi.org/10.31255/978-5-94797-319-8-941-943.

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Staley, Spencer E., Peter J. Fawcett, R. Scott Anderson, Erik T. Brown, Michael Petronis e Nelia W. Dunbar. "SEDIMENTOLOGICAL ANALYSIS OF THE STONEMAN LAKE, AZ, CORE: IMPLICATIONS FOR LONG-TERM QUATERNARY CLIMATE CHANGE IN THE SOUTHWEST". In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-307055.

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Hill, Christopher L. "THE USE OF SEDIMENTARY SEQUENCES FROM ARCHAEOLOGICAL AND PALEONTOLOGICAL LOCALITIES TO EXAMINE CLIMATE CHANGE AND LATE QUATERNARY LANDSCAPE EVOLUTION". In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-299286.

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Springer, Kathleen B., e Jeffrey S. Pigati. "DESERT WETLANDS IN DEATH VALLEY NATIONAL PARK AND THE REGIONAL HYDROLOGIC RESPONSE TO CLIMATE CHANGE DURING THE LATE QUATERNARY". In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322416.

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Hesse, Paul. "GSA QUATERNARY GEOLOGY AND GEOMORPHOLOGY DIVISION FAROUK EL-BAZ AWARD FOR DESERT RESEARCH: THE FUTURE IS AEOLIAN: CAN WE UNDERSTAND HOW DESERTS WILL RESPOND TO CLIMATE CHANGE FROM THEIR QUATERNARY HISTORY?" In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-317886.

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Pearthree, Kristin S., Peter J. Fawcett, Erik Brown, Josef P. Werne, Margarita Caballero-Miranda, Socorro Lozano-García, Beatriz Ortega-Guerrero, Mona Stockhecke, Blas Valero-Garcés e Viorel Atudorei. "CARBON AND NITROGEN ISOTOPES FROM ORGANICS IN LAKE CHALCO, MEXICO: A RECORD OF QUATERNARY CLIMATE AND ENVIRONMENTAL CHANGE IN NEOTROPICAL NORTH AMERICA". In Joint 70th Annual Rocky Mountain GSA Section / 114th Annual Cordilleran GSA Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018rm-314320.

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Winter, Peyton, Jonathan S. Keller, Catalina P. Tome, Felisa A. Smith e Rowan Lockwood. "THE EFFECTS OF CLIMATE CHANGE AND MEGAFAUNAL EXTINCTION ON BODY SIZE AND DIET IN THE HISPID POCKET MOUSE (CHAETODIPUS HISPIDUS) OVER THE LATE QUATERNARY". In Joint 69th Annual Southeastern / 55th Annual Northeastern GSA Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020se-344749.

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DePue, Lee, Kelvin W. Ramsey e Nicholas L. Balascio. "A CONTINUOUS RECORD OF LATE QUATERNARY CLIMATE AND ENVIRONMENTAL CHANGES FROM THE DELAWARE COASTAL PLAIN". In Joint 69th Annual Southeastern / 55th Annual Northeastern GSA Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020se-344916.

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Litvinaitis, Andrius, Lina Bagdžiūnaitė-Litvinaitienė e Laurynas Šaučiūnas. "The Influence of Neogene Lithology on the Šventoji River Hydrologic Regime". In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.083.

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Due to the recently increasing frequency of extreme changes in river runoff regime, scientific literature deals with the characteristics of runoff formation. Works are carried out in analyzing climate changes and a lot of attention falls on land–use structures. Following thorough analysis of the lithological structure of river basins in separate costal zones, this article aims at evaluating river runoff formation characteristics. The basin lithological factor (sandy, loamy, argillaceous) was calculated based on Quaternary map of Lithuania M 1:200000 and Lithuanian river map M 1:50000 using ArcGis software. In order to carry out more thorough analysis of the influence of lithology in given territories, sections of 0–20 m, 50–200 m, 200–500 m, 500–800 m, 800–1000 m and >1000 m were established, calculating the distance in meters from the riverbank. The period of the years 1984–2014 was analyzed, years with the greatest, average and lowest amounts of precipitation (according to proba-bility) was analysed and relation between the runoff and precipitation was established as well as that with the lithological structure, estab-lished following a derivation of a hydromodule.

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Rapporti di organizzazioni sul tema "Quaternary climate change"

Reneau, S. L., E. V. McDonald, J. N. Gardner, P. A. Longmire, T. R. Kolbe, J. S. Carney e P. M. Watt. Erosion and deposition on the Pajarito Plateau, New Mexico, and implications for geomorphic responses to late Quaternary climatic changes. Office of Scientific and Technical Information (OSTI), aprile 1996. http://dx.doi.org/10.2172/215311.

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Saville, Alan, e Caroline Wickham-Jones, a cura di. Palaeolithic and Mesolithic Scotland : Scottish Archaeological Research Framework Panel Report. Society for Antiquaries of Scotland, giugno 2012. http://dx.doi.org/10.9750/scarf.06.2012.163.

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Why research Palaeolithic and Mesolithic Scotland? Palaeolithic and Mesolithic archaeology sheds light on the first colonisation and subsequent early inhabitation of Scotland. It is a growing and exciting field where increasing Scottish evidence has been given wider significance in the context of European prehistory. It extends over a long period, which saw great changes, including substantial environmental transformations, and the impact of, and societal response to, climate change. The period as a whole provides the foundation for the human occupation of Scotland and is crucial for understanding prehistoric society, both for Scotland and across North-West Europe. Within the Palaeolithic and Mesolithic periods there are considerable opportunities for pioneering research. Individual projects can still have a substantial impact and there remain opportunities for pioneering discoveries including cemeteries, domestic and other structures, stratified sites, and for exploring the huge evidential potential of water-logged and underwater sites. Palaeolithic and Mesolithic archaeology also stimulates and draws upon exciting multi-disciplinary collaborations. Panel Task and Remit The panel remit was to review critically the current state of knowledge and consider promising areas of future research into the earliest prehistory of Scotland. This was undertaken with a view to improved understanding of all aspects of the colonization and inhabitation of the country by peoples practising a wholly hunter-fisher-gatherer way of life prior to the advent of farming. In so doing, it was recognised as particularly important that both environmental data (including vegetation, fauna, sea level, and landscape work) and cultural change during this period be evaluated. The resultant report, outlines the different areas of research in which archaeologists interested in early prehistory work, and highlights the research topics to which they aspire. The report is structured by theme: history of investigation; reconstruction of the environment; the nature of the archaeological record; methodologies for recreating the past; and finally, the lifestyles of past people – the latter representing both a statement of current knowledge and the ultimate aim for archaeologists; the goal of all the former sections. The document is reinforced by material on-line which provides further detail and resources. The Palaeolithic and Mesolithic panel report of ScARF is intended as a resource to be utilised, built upon, and kept updated, hopefully by those it has helped inspire and inform as well as those who follow in their footsteps. Future Research The main recommendations of the panel report can be summarized under four key headings:  Visibility: Due to the considerable length of time over which sites were formed, and the predominant mobility of the population, early prehistoric remains are to be found right across the landscape, although they often survive as ephemeral traces and in low densities. Therefore, all archaeological work should take into account the expectation of Palaeolithic and Mesolithic ScARF Panel Report iv encountering early prehistoric remains. This applies equally to both commercial and research archaeology, and to amateur activity which often makes the initial discovery. This should not be seen as an obstacle, but as a benefit, and not finding such remains should be cause for question. There is no doubt that important evidence of these periods remains unrecognised in private, public, and commercial collections and there is a strong need for backlog evaluation, proper curation and analysis. The inadequate representation of Palaeolithic and Mesolithic information in existing national and local databases must be addressed.  Collaboration: Multi-disciplinary, collaborative, and cross- sector approaches must be encouraged – site prospection, prediction, recognition, and contextualisation are key areas to this end. Reconstructing past environments and their chronological frameworks, and exploring submerged and buried landscapes offer existing examples of fruitful, cross-disciplinary work. Palaeolithic and Mesolithic archaeology has an important place within Quaternary science and the potential for deeply buried remains means that geoarchaeology should have a prominent role.  Innovation: Research-led projects are currently making a substantial impact across all aspects of Palaeolithic and Mesolithic archaeology; a funding policy that acknowledges risk and promotes the innovation that these periods demand should be encouraged. The exploration of lesser known areas, work on different types of site, new approaches to artefacts, and the application of novel methodologies should all be promoted when engaging with the challenges of early prehistory.  Tackling the ‘big questions’: Archaeologists should engage with the big questions of earliest prehistory in Scotland, including the colonisation of new land, how lifestyles in past societies were organized, the effects of and the responses to environmental change, and the transitions to new modes of life. This should be done through a holistic view of the available data, encompassing all the complexities of interpretation and developing competing and testable models. Scottish data can be used to address many of the currently topical research topics in archaeology, and will provide a springboard to a better understanding of early prehistoric life in Scotland and beyond.

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