DOCSLIB.ORG

Bibliography Berke, M.A. Et Al. 2012. a Mid-Holocene Thermal Maximum At

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Bibliography Berke, M.A. Et Al. 2012. a Mid-Holocene Thermal Maximum At Bibliography Berke, M.A. et al. 2012. A mid-Holocene thermal maximum at the end of the African Humid Period. Earth and Planetary Science Letters 351, 95-104. Bond, G. et al. 2001. Persistent Solar Influence on North Atlantic Climate During the Holocene. Science Vol. 294, pp. 2130-2136 Bray, J.R. 1968. Glaciation and Solar Activity since the Fifth Century BC and the Solar Cycle. Nature 220, 672-674. Debret M. et al. 2007. The origin of the 1500-year climate cycles in Holocene North-Atlantic records. Clim. Past Discuss., 3, 679–692. Debret, M. et al. 2009. Evidence from wavelet analysis for a mid-Holocene transition in global climate forcing. Quat. Sci. Rev., 28, 2675-2688. Gagan, M.K. et al. 1998. Temperature and surface-ocean water balance of the mid-Holocene tropical western Pacific. Science 279, 5353, 1014-1018. Holmgren, K. et al. 2003. Persistent millennial-scale climatic variability over the past 25,000 years in Southern Africa. Quaternary Science Reviews 22, 21, 2311-2326. Huybers, P. 2006. Early Pleistocene glacial cycles and the integrated summer insolation forcing. Science, 313, 5786, 508-511. Jouzel, J. et al. 2007. Orbital and millennial Antarctic climate variability over the past 800,000 years. science, 317, 5839, 793-796. Kobashi, T. et al. 2007. Precise timing and characterization of abrupt climate change 8200 years ago from air trapped in polar ice. Quaternary Science Reviews, 26, 9, 1212-1222. Kobashi, T. et al. 2013. Causes of Greenland temperature variability over the past 4000 yr: implications for northern hemispheric temperature changes. Climate of the Past, 9, 5, 2299. Koch, J. et al. 2014. Alpine glaciers and permanent ice and snow patches in western Canada approach their smallest sizes since the mid-Holocene, consistent with global trends. The Holocene 24,12, 1639-1648. Kullman, L. 2001. 20th century climate warming and tree-limit rise in the southern Scandes of Sweden. Ambio: A journal of the Human Environment 30, 2, 72-80. Kuper, R. & Kröpelin, S. 2006. Climate-Controlled Holocene Occupation in the Sahara: Motor of Africa's Evolution. Science 313, 803-807. Kutzbach, J.E. 1981. Monsoon climate of the early Holocene: Climate experiment with the Earth's orbital parameters for 9000 years ago. Science 214, 59-61. Lamb, H.H. 1977. Climate: Present, past and future. Volume 2. Climatic history and the future. Methuen, London. Laskar, J., et al. 2004. A long-term numerical solution for the insolation quantities of the Earth. Astronomy & Astrophysics 428, 1, 261-285. Leduc, G. et al. 2010. Holocene and Eemian sea surface temperature trends as revealed by alkenone and Mg/Ca paleothermometry. Quaternary Science Reviews, 29, 7, 989-1004. Liu, Z. et al. 2014. The Holocene temperature conundrum. PNAS 111, E3501-E3505. MacDonald, G.M. et al. 2000. Holocene treeline history and climate change across northern Eurasia. Quaternary Research 53, 3, 302-311. Magny, M., & Haas, J.N. 2004. A major widespread climatic change around 5300 cal. yr BP at the time of the Alpine Iceman. Journal of Quaternary Science 19, 5, 423-430. Manning, K. & Timpson, A. 2014. The demographic response to Holocene climate change in the Sahara. Quat. Sci. Rev. 101, 28-35. Marcott, S.A., et al. 2013. A Reconstruction of Regional and Global Temperature for the Past 11,300 Years. Science Vol. 339, pp. 1198-1201. Maslin, M. et al. 2001. Synthesis of the nature and causes of rapid climate transitions during the Quaternary. In "The Oceans and Rapid Climate Change: Past, Present, and Future." American Geophysical Union. Geophysical Monograph Series 126. pp. 9-52 Mayewski, P.A. et al. 2004. Holocene climate variability. Quaternary Research Vol. 62 pp. 243–255. Monnin, E., et al. 2004. EPICA Dome C ice core high resolution Holocene and transition CO2 data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series 55. Moy, C.M., et al. 2002. Variability of El Niño/Southern Oscillation activity at millennial timescales during the Holocene epoch. Nature 420, 162-165. NGRIP members. 2004. High-resolution record of Northern Hemisphere climate extending into the last interglacial period. Nature, 431, 7005, 147-151. Pisaric, M.F.J. et al. 2003. Holocene treeline dynamics in the mountains of northeastern British Columbia, Canada, inferred from fossil pollen and stomata. The Holocene 13, 2, 161-173. Polissar, P.J. et al. 2013. Synchronous interhemispheric Holocene climate trends in the tropical Andes. PNAS Vol. 110 No. 36 pp. 14551–14556. Porter, S.C. 2000. Onset of neoglaciation in the Southern Hemisphere. Journal of Quaternary Science 15, 4, 395-408. Raymo, M.E., and Nisancioglu, K.H. 2003. The 41 kyr world: Milankovitch's other unsolved mystery. Paleoceanography, 18, 1. Renssen, H. et al. 2012. Global characterization of the Holocene thermal maximum. Quaternary Science Reviews 48, 7-19. Rosenthal, Y. et al. 2013. Pacific ocean heat content during the past 10,000 years. Science, 342, 6158, 617- 621. Rossignol-Strick, M., 1985. Mediterranean Quaternary sapropels: an immediate response of the African monsoon to variation of insolation. Palaeogeogr., Palaeoclimatol., Palaeoecol. 49, 237-265. Schrøder N., et al. 2004. 10,000 Years of Climate Change and Human Impact on the Environment in the Area Surrounding Lejre. J. Transdiscip. Environ. Stud. Vol. 3 pp. 1-27. Shevenell, A.E. et al. 2011. Holocene Southern Ocean surface temperature variability west of the Antarctic Peninsula. Nature 470, 7333, 250-254. Simonneau, S. et al. 2014. Tracking Holocene glacial and high-altitude alpine environments fluctuations from minerogenic and organic markers in proglacial lake sediments (Lake Blanc Huez, Western French Alps). Quat. Sci. Rev. 89, 27-43. Solomina, O.N. et al. 2015. Holocene glacier fluctuations. Quaternary Science Reviews, 111, 9-34.Solanki, S.K. et al. 2004. Unusual activity of the Sun during recent decades compared to the previous 11,000 years. Nature, 431, 1084-1087. Stott, L. et al. 2004. Decline of surface temperature and salinity in the western tropical Pacific Ocean in the Holocene epoch. Nature 431, 7004, 56-59. Thompson, L.G. et al. 2006. Abrupt tropical climate change: Past and present. PNAS 103, 10536-10543. Thouret, J.-C. et al. 1996. Paleoenvironmental changes and glacial stades of the last 50,000 years in the Cordillera Central, Colombia. Quaternary Research 46, 1, 1-18. Tinner, W. et al. 1996. Treeline fluctuations recorded for 12,500 years by soil profiles, pollen, and plant macrofossils in the Central Swiss Alps. Arctic and Alpine Research 28, 2, 131-147. Tzedakis, P.C. et al. 2017. A simple rule to determine which insolation cycles lead to interglacials. Nature, 542, 7642, 427-432. Vinther, B.M. et al. 2009. Holocene thinning of the Greenland ice sheet. Nature 461, 7262, 385-388. Wanner, H. & Bronnimann,̈ S. 2012. Is there a global Holocene climate mode? PAGES news 20, 44-45. Weninger, B. et al. 2009. The impact of rapid climate change on prehistoric societies during the Holocene in the eastern Mediterranean. Documenta Praehistorica 36: 7–59. Werne, J.P. et al. 2000. Climate-induced variations in productivity and planktonic ecosystem structure from the Younger Dryas to Holocene in the Cariaco Basin, Venezuela. Paleoceanography 15, 1, 19-29. Witt, A. & Schumann, A.Y. 2005. Holocene climate variability on millennial scales recorded in Greenland ice cores. Nonlinear Processes in Geophysics, 12, 3, 345-352. .
Load more

Recommended publications
  • Sea Level and Global Ice Volumes from the Last Glacial Maximum to the Holocene
    Sea level and global ice volumes from the Last Glacial Maximum to the Holocene Kurt Lambecka,b,1, Hélène Roubya,b, Anthony Purcella, Yiying Sunc, and Malcolm Sambridgea aResearch School of Earth Sciences, The Australian National University, Canberra, ACT 0200, Australia; bLaboratoire de Géologie de l’École Normale Supérieure, UMR 8538 du CNRS, 75231 Paris, France; and cDepartment of Earth Sciences, University of Hong Kong, Hong Kong, China This contribution is part of the special series of Inaugural Articles by members of the National Academy of Sciences elected in 2009. Contributed by Kurt Lambeck, September 12, 2014 (sent for review July 1, 2014; reviewed by Edouard Bard, Jerry X. Mitrovica, and Peter U. Clark) The major cause of sea-level change during ice ages is the exchange for the Holocene for which the direct measures of past sea level are of water between ice and ocean and the planet’s dynamic response relatively abundant, for example, exhibit differences both in phase to the changing surface load. Inversion of ∼1,000 observations for and in noise characteristics between the two data [compare, for the past 35,000 y from localities far from former ice margins has example, the Holocene parts of oxygen isotope records from the provided new constraints on the fluctuation of ice volume in this Pacific (9) and from two Red Sea cores (10)]. interval. Key results are: (i) a rapid final fall in global sea level of Past sea level is measured with respect to its present position ∼40 m in <2,000 y at the onset of the glacial maximum ∼30,000 y and contains information on both land movement and changes in before present (30 ka BP); (ii) a slow fall to −134 m from 29 to 21 ka ocean volume.
    [Show full text]
  • Holocene Glacier Fluctuations
    Quaternary Science Reviews 111 (2015) 9e34 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Invited review Holocene glacier fluctuations * Olga N. Solomina a, b, , Raymond S. Bradley c, Dominic A. Hodgson d, Susan Ivy-Ochs e, f, Vincent Jomelli g, Andrew N. Mackintosh h, Atle Nesje i, j, Lewis A. Owen k, Heinz Wanner l, Gregory C. Wiles m, Nicolas E. Young n a Institute of Geography RAS, Staromonetny-29, 119017, Staromonetny, Moscow, Russia b Tomsk State University, Tomsk, Russia c Department of Geosciences, University of Massachusetts, Amherst, MA 012003, USA d British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK e Institute of Particle Physics, ETH Zurich, 8093 Zurich, Switzerland f Institute of Geography, University of Zurich, 8057 Zurich, Switzerland g Universite Paris 1 Pantheon-Sorbonne, CNRS Laboratoire de Geographie Physique, 92195 Meudon, France h Antarctic Research Centre, Victoria University Wellington, New Zealand i Department of Earth Science, University of Bergen, N-5020 Bergen, Norway j Uni Research Klima, Bjerknes Centre for Climate Research, N-5020 Bergen Norway k Department of Geology, University of Cincinnati, Cincinnati, OH 45225, USA l Institute of Geography and Oeschger Centre for Climate Change Research, University of Bern, Switzerland m Department of Geology, The College of Wooster, Wooster, OH 44691, USA n Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA article info abstract Article history: A global overview of glacier advances and retreats (grouped by regions and by millennia) for the Received 15 July 2014 Holocene is compiled from previous studies. The reconstructions of glacier fluctuations are based on Received in revised form 1) mapping and dating moraines defined by 14C, TCN, OSL, lichenometry and tree rings (discontinuous 22 November 2014 records/time series), and 2) sediments from proglacial lakes and speleothems (continuous records/ Accepted 27 November 2014 time series).
    [Show full text]
  • Glacier Fluctuations During the Past 2000 Years
    Quaternary Science Reviews 149 (2016) 61e90 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Invited review Glacier fluctuations during the past 2000 years * Olga N. Solomina a, , Raymond S. Bradley b, Vincent Jomelli c, Aslaug Geirsdottir d, Darrell S. Kaufman e, Johannes Koch f, Nicholas P. McKay e, Mariano Masiokas g, Gifford Miller h, Atle Nesje i, j, Kurt Nicolussi k, Lewis A. Owen l, Aaron E. Putnam m, n, Heinz Wanner o, Gregory Wiles p, Bao Yang q a Institute of Geography RAS, Staromonetny-29, 119017 Staromonetny, Moscow, Russia b Department of Geosciences, University of Massachusetts, Amherst, MA 01003, USA c Universite Paris 1 Pantheon-Sorbonne, CNRS Laboratoire de Geographie Physique, 92195 Meudon, France d Department of Earth Sciences, University of Iceland, Askja, Sturlugata 7, 101 Reykjavík, Iceland e School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, AZ 86011, USA f Department of Geography, Brandon University, Brandon, MB R7A 6A9, Canada g Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT CONICET Mendoza, CC 330 Mendoza, Argentina h INSTAAR and Geological Sciences, University of Colorado Boulder, USA i Department of Earth Science, University of Bergen, Allegaten 41, N-5007 Bergen, Norway j Uni Research Climate AS at Bjerknes Centre for Climate Research, Bergen, Norway k Institute of Geography, University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria l Department of Geology,
    [Show full text]
  • Cirques Have Growth Spurts During Deglacial and Interglacial Periods: Evidence from 10Be and 26Al Nuclide Inventories in the Central and Eastern Pyrenees Y
    Cirques have growth spurts during deglacial and interglacial periods: Evidence from 10Be and 26Al nuclide inventories in the central and eastern Pyrenees Y. Crest, M Delmas, Regis Braucher, Y. Gunnell, M Calvet, A.S.T.E.R. Team To cite this version: Y. Crest, M Delmas, Regis Braucher, Y. Gunnell, M Calvet, et al.. Cirques have growth spurts during deglacial and interglacial periods: Evidence from 10Be and 26Al nuclide inventories in the central and eastern Pyrenees. Geomorphology, Elsevier, 2017, 278, pp.60 - 77. 10.1016/j.geomorph.2016.10.035. hal-01420871 HAL Id: hal-01420871 https://hal-amu.archives-ouvertes.fr/hal-01420871 Submitted on 21 Dec 2016 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Geomorphology 278 (2017) 60–77 Contents lists available at ScienceDirect Geomorphology journal homepage: www.elsevier.com/locate/geomorph Cirques have growth spurts during deglacial and interglacial periods: Evidence from 10Be and 26Al nuclide inventories in the central and eastern Pyrenees Y. Crest a,⁎,M.Delmasa,R.Braucherb, Y. Gunnell c,M.Calveta, ASTER Team b,1: a Univ Perpignan Via-Domitia, UMR 7194 CNRS Histoire Naturelle de l'Homme Préhistorique, 66860 Perpignan Cedex, France b Aix-Marseille Université, CNRS–IRD–Collège de France, UMR 34 CEREGE, Technopôle de l'Environnement Arbois–Méditerranée, BP80, 13545 Aix-en-Provence, France c Univ Lyon Lumière, Department of Geography, UMR 5600 CNRS Environnement Ville Société, 5 avenue Pierre Mendès-France, F-69676 Bron, France article info abstract Article history: Cirques are emblematic landforms of alpine landscapes.
    [Show full text]
  • New Glacier Evidence for Ice-Free Summits During the Life of The
    www.nature.com/scientificreports OPEN New glacier evidence for ice‑free summits during the life of the Tyrolean Iceman Pascal Bohleber1,2*, Margit Schwikowski3,4,5, Martin Stocker‑Waldhuber1, Ling Fang3,5 & Andrea Fischer1 Detailed knowledge of Holocene climate and glaciers dynamics is essential for sustainable development in warming mountain regions. Yet information about Holocene glacier coverage in the Alps before the Little Ice Age stems mostly from studying advances of glacier tongues at lower elevations. Here we present a new approach to reconstructing past glacier low stands and ice‑ free conditions by assessing and dating the oldest ice preserved at high elevations. A previously unexplored ice dome at Weißseespitze summit (3500 m), near where the “Tyrolean Iceman” was found, ofers almost ideal conditions for preserving the original ice formed at the site. The glaciological settings and state‑of‑the‑art micro‑radiocarbon age constraints indicate that the summit has been glaciated for about 5900 years. In combination with known maximum ages of other high Alpine glaciers, we present evidence for an elevation gradient of neoglaciation onset. It reveals that in the Alps only the highest elevation sites remained ice‑covered throughout the Holocene. Just before the life of the Iceman, high Alpine summits were emerging from nearly ice‑free conditions, during the start of a Mid‑Holocene neoglaciation. We demonstrate that, under specifc circumstances, the old ice at the base of high Alpine glaciers is a sensitive archive of glacier change. However, under current melt rates the archive at Weißseespitze and at similar locations will be lost within the next two decades.
    [Show full text]
  • The 'Little Ice Age': Re-Evaluation of An
    THE ‘LITTLE ICE AGE’: RE-EVALUATION OF AN EVOLVING CONCEPT THE ‘LITTLE ICE AGE’: RE-EVALUATION OF AN EVOLVING CONCEPT BY JOHN A. MATTHEWS1 AND KEITH R. BRIFFA2 1 Department of Geography, University of Wales Swansea, Swansea, UK 2 Climatic Research Unit, University of East Anglia, Norwich, UK Matthews, J.A. and Briffa, K.R., 2005: The ‘Little Ice Age’: re- A controversial term evaluation of an evolving concept. Geogr. Ann., 87 A (1): 17–36. The term ‘little ice age’ was coined by Matthes ABSTRACT. This review focuses on the develop- (1939, p. 520) with reference to the phenomenon of ment of the ‘Little Ice Age’ as a glaciological and cli- glacier regrowth or recrudescence in the Sierra Ne- matic concept, and evaluates its current usefulness vada, California, following their melting away in in the light of new data on the glacier and climatic the Hypsithermal of the early Holocene. The mo- variations of the last millennium and of the Holocene. ‘Little Ice Age’ glacierization occurred raines on which Matthes based his initial concept over about 650 years and can be defined most pre- have been described more recently as a product of cisely in the European Alps (c. AD 1300–1950) when ‘neoglaciation’ (Porter and Denton 1967) and the extended glaciers were larger than before or since. term ‘Little Ice Age’ now generally refers only to ‘Little Ice Age’ climate is defined as a shorter time the latest glacier expansion episode of the late interval of about 330 years (c. AD 1570–1900) when Northern Hemisphere summer temperatures (land Holocene.
    [Show full text]
  • The Onset of Neoglaciation in Iceland and the 4.2 Ka Event
    Clim. Past Discuss., https://doi.org/10.5194/cp-2018-130 Manuscript under review for journal Clim. Past Discussion started: 5 October 2018 c Author(s) 2018. CC BY 4.0 License. The onset of Neoglaciation in Iceland and the 4.2 ka event Áslaug Geirsdóttir1, Gifford H. Miller1,2, John T. Andrews2, David J. Harning1,2, Leif S. Anderson1,3 Thor Thordarson1 5 1Faculty of Earth Science, University of Iceland 2INSTAAR/Department of Geological Sciences, University of Colorado Boulder 3Department of Earth Sciences, Simon Fraser University, CANADA Correspondence to: Áslaug Geirsdóttir ([email protected]) 10 Abstract. Strong similarities in Holocene climate reconstructions derived from multiple proxies (BSi, TOC, δ13C, C/N, MS, δ15N) preserved in sediments from both glacial and non-glacial lakes across Iceland indicate a relatively warm early-to-mid Holocene from 10 to 6 ka, overprinted with cold excursions presumably related to meltwater impact on North Atlantic 15 circulation until 7.9 ka. Sediment in lakes from glacial catchments indicates their catchments were ice-free during this interval. Statistical treatment of the high-resolution multiproxy paleoclimate lake records shows that despite great variability in catchment characteristics, the records document more or less synchronous abrupt, cold departures as opposed to the smoothly decreasing trend in Northern Hemisphere summer insolation. Although all lake records document a decline in summer temperature through the Holocene consistent with the regular decline in summer insolation, the onset of significant 20 summer cooling, occurs ~5 ka in high-elevation interior sites, but is variably later in sites closer to the coast, suggesting some combination of changing ocean currents and sea ice modulate the impact from decreasing summer insolation.
    [Show full text]
  • Reappraisal of Chinese Loess Plateau Stratigraphic Sequences Over the Last 30,000 Years: Precursors of an Important Holocene Monsoon Climatic Event
    REAPPRAISAL OF CHINESE LOESS PLATEAU STRATIGRAPHIC SEQUENCES OVER THE LAST 30,000 YEARS: PRECURSORS OF AN IMPORTANT HOLOCENE MONSOON CLIMATIC EVENT 2 WEIJLAN ZHO U,1 ZHISHENG AN,1 A. J. T DULL, D. J. DONAHUE2 and M. J. HEADS ABSTRACT. Through the establishment of radiocarbon chronozones relating common geological events within lacustrine features and eolian sediments from five profiles representative of loess yuan (tablelands), river valley and northwest margin study of the Loess Plateau, we propose a series of stratigraphic divisions within the last 30 ka. The focus of this detailed cool- involves stratigraphic relationships contributing to evidence of Younger Dryas events, with the recognition of cold-dry, pro- wet and cold-dry periods represented within the Heiheze silt, Midiwan peat and Liushuwan eolian sand. The stratigraphic files reflect century-scale fluctuations of the East Asian monsoons. The precursor events enable us to place the Pleistocene/ Holocene boundary at 10,000 BP. INTRODUCTION The late-glacial stratigraphy of North China consists mainly of both lacustrine and eolian sediments. Zheng (1984) made a preliminary stratigraphic subdivision for the Holocene loess. Lei (1992) placed the 04/03 boundary at the interface of SOIL1 with the age of ca. 10,000 BP for the southern part of Loess Plateau. Head, Zhou and Zhou (1989), Zhou and An (1991), Zhou, An and Head (1994) and Zhou, Head and Kaihola (1994) established pretreatment procedures for the separation of organics from paleosol and the extraction of wood cellulose, and further proposed a stratigraphic subdivision for Late Pleistocene loess based on reliable radiocarbon dating. However, since the stratigraphic resolution of the studied profile is not good enough, it is difficult to make a detailed study of the transitional stratigraphy from the last glaciation to post glaciation.
    [Show full text]
  • Holocene Glacier Fluctuations in Alaska
    Quaternary Science Reviews 28 (2009) 2034–2048 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Holocene glacier fluctuations in Alaska David J. Barclay a,*, Gregory C. Wiles b, Parker E. Calkin c a Geology Department, State University of New York College at Cortland, Cortland, NY 13045, USA b Department of Geology, The College of Wooster, Wooster, OH 44691, USA c Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309, USA article info abstract Article history: This review summarizes forefield and lacustrine records of glacier fluctuations in Alaska during the Received 9 May 2008 Holocene. Following retreat from latest Pleistocene advances, valley glaciers with land-based termini Received in revised form were in retracted positions during the early to middle Holocene. Neoglaciation began in some areas by 15 January 2009 4.0 ka and major advances were underway by 3.0 ka, with perhaps two distinct early Neoglacial Accepted 29 January 2009 expansions centered respectively on 3.3–2.9 and 2.2–2.0 ka. Tree-ring cross-dates of glacially killed trees at two termini in southern Alaska show a major advance in the AD 550s–720s. The subsequent Little Ice Age (LIA) expansion was underway in the AD 1180s–1320s and culminated with two advance phases respectively in the 1540s–1710s and in the 1810s–1880s. The LIA advance was the largest Holocene expansion in southern Alaska, although older late Holocene moraines are preserved on many forefields in northern and interior Alaska. Tidewater glaciers around the rim of the Gulf of Alaska have made major advances throughout the Holocene.
    [Show full text]
  • Nonlinear Response of Summer Temperature to Holocene Insolation Forcing in Alaska
    Nonlinear response of summer temperature to Holocene insolation forcing in Alaska Benjamin F. Clegga,b, Ryan Kellyb, Gina H. Clarkeb,1, Ian R. Walkerc, and Feng Sheng Hua,b,d,2 aProgram in Ecology, Evolution, and Conservation Biology, bDepartment of Plant Biology, and dDepartment of Geology, University of Illinois, Urbana, IL 61801; and cBiology and Earth and Environmental Sciences, University of British Columbia Okanagan, Kelowna, BC, Canada V1V 1V7 Edited by Mark H. Thiemens, University of California San Diego, La Jolla, CA, and approved October 21, 2011 (received for review July 8, 2011) Regional climate responses to large-scale forcings, such as pre- century warming, attributed to possible effects of the AO during cessional changes in solar irradiation and increases in anthropo- both periods (4). Some outstanding exceptions to this consistency genic greenhouse gases, may be nonlinear as a result of complex do exist. In particular, Alaska is thought to have experienced interactions among earth system components. Such nonlinear a thermal maximum during the early Holocene, in contrast to behaviors constitute a major source of climate “surprises” with cooling expected from a possible positive phase of AO. The ex- important socioeconomic and ecological implications. Paleorecords istence of Populus woodland as inferred from some Alaskan are key for elucidating patterns and mechanisms of nonlinear pollen records is often cited as evidence of an early-postglacial responses to radiative forcing, but their utility has been greatly thermal maximum (4). However, this interpretation remains con- limited by the paucity of quantitative temperature reconstruc- troversial (5), and paleoecologists have struggled with the conflict tions.
    [Show full text]
  • Alphabetical Glossary of Geomorphology
    International Association of Geomorphologists Association Internationale des Géomorphologues ALPHABETICAL GLOSSARY OF GEOMORPHOLOGY Version 1.0 Prepared for the IAG by Andrew Goudie, July 2014 Suggestions for corrections and additions should be sent to [email protected] Abime A vertical shaft in karstic (limestone) areas Ablation The wasting and removal of material from a rock surface by weathering and erosion, or more specifically from a glacier surface by melting, erosion or calving Ablation till Glacial debris deposited when a glacier melts away Abrasion The mechanical wearing down, scraping, or grinding away of a rock surface by friction, ensuing from collision between particles during their transport in wind, ice, running water, waves or gravity. It is sometimes termed corrosion Abrasion notch An elongated cliff-base hollow (typically 1-2 m high and up to 3m recessed) cut out by abrasion, usually where breaking waves are armed with rock fragments Abrasion platform A smooth, seaward-sloping surface formed by abrasion, extending across a rocky shore and often continuing below low tide level as a broad, very gently sloping surface (plain of marine erosion) formed by long-continued abrasion Abrasion ramp A smooth, seaward-sloping segment formed by abrasion on a rocky shore, usually a few meters wide, close to the cliff base Abyss Either a deep part of the ocean or a ravine or deep gorge Abyssal hill A small hill that rises from the floor of an abyssal plain. They are the most abundant geomorphic structures on the planet Earth, covering more than 30% of the ocean floors Abyssal plain An underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m.
    [Show full text]
  • Glaciation of Little Cotton- Wood and Bells Canyons, Wasatch Mountains, Utah by GERALD M
    Glaciation of Little Cotton- wood and Bells Canyons, Wasatch Mountains, Utah By GERALD M. RICHMOND SHORTER CONTRIBUTIONS TO GENERAL GEOLOGY GEOLOGICAL SURVEY PROFESSIONAL PAPER 454-D A study of the sequence of advances and recessions of the Quaternary glaciers and their relations to the rises andfalls of Lake Bonneville UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1964 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director The U.S. Geological Survey Library has cataloged this publication as follows: Richmond, Gerald Martin, 1914r- Glaciation of Little Cottonwood and Bells Canyons, Wasatch Mountains, Utah. Washington, U.S. Govt. Print, Off., 1964. iv, 41 p. illus., maps (2 fold. col. in pocket) diagrs., profiles, tables. 29 cm. (U.S. Geological Survey. Professional paper 454-D) Shorter contributions to general geology. Bibliography: p. 40-^1. 1. Glacial epoch Utah Wasatch Mountains. 2. Geology Utah Wasatch Mountains. 3. Geology, Stratigraphic Quaternary. I. Title. (Series) For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, B.C. 20402 CONTENTS Page Quaternary deposits Continued Abstract_________________________________________ Dl Deposits of the Pinedale Glaciation Continued Introduction _______________________________________ 1 Till Continued Previous work____________________________________ 3 Pinedale Glaciation along Little Bedrock geology___________________________________ 3 Cottonwood Canyon Continued Climate_________________________________________
    [Show full text]