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Languages : fr
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Category :
Languages : fr
Pages :
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Author:
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Languages : fr
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Author: ADELINE.. FABRE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 350
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Book Description
LE SYSTEME CLIMATIQUE TERRESTRE EST FORME DE PLUSIEURS COMPOSANTES QUI INTERAGISSENT ETROITEMENT (ATMOSPHERE, CALOTTES DE GLACE, OCEANS, LITHOSPHERE ET BIOSPHERE). LA MODELISATION NUMERIQUE PERMET D'ETUDIER CES INTERACTIONS. DANS CE TRAVAIL, L'ECOULEMENT DE PLUSIEURS CALOTTES GLACIAIRES EST MODELISE ET ON S'ATTACHE PARTICULIEREMENT A L'ETUDE DE LEURS INTERACTIONS AVEC L'ATMOSPHERE. CELLES-CI SONT DETERMINEES PAR L'ALTITUDE DE LA SURFACE DE LA CALOTTE, LES TEMPERATURES EN SURFACE ET L'ACCUMULATION. UN MODELE 3D D'ECOULEMENT DE CALOTTE GLACIAIRE, DEVELOPPE AU SEIN DE L'EQUIPE MODELISATION DU LGGE, EST PRESENTE. IL EST TESTE SUR UNE CALOTTE THEORIQUE DANS LE CADRE D'UN PROJET EUROPEEN D'INTERCOMPARAISON DE MODELES. IL EST ENSUITE APPLIQUE A LA CALOTTE DU GROENLAND, EN SIMULANT LA REPONSE DE LA CALOTTE SOUS DES CLIMATS DIFFERENTS DU CLIMAT ACTUEL ET EN ETUDIANT SON EVOLUTION AU COURS DU DERNIER CYCLE INTERGLACIAIRE-GLACIAIRE. LA SENSIBILITE DU MODELE A LA PARAMETRISATION DE L'ACCUMULATION EST MISE EN EVIDENCE. LE MODELE EST ENFIN APPLIQUE A LA RECONSTRUCTION DES CALOTTES DE GLACE PRESENTES DANS L'HEMISPHERE NORD (LAURENTIDE ET FENNOSCANDIE) AU DERNIER MAXIMUM GLACIAIRE (IL Y A ENVIRON 21 000 ANS). TROIS METHODES SONT UTILISEES POUR CALCULER LES CONDITIONS CLIMATIQUES EN ENTREE DU MODELE. DANS LES DEUX PREMIERES, CES CONDITIONS SONT DETERMINEES PAR UNE PARAMETRISATION CALIBREE SUR LES VALEURS ACTUELLES: LES RESULTATS AINSI OBTENUS NE SONT PAS SATISFAISANTS. LA TROISIEME METHODE UTILISE LES TEMPERATURES EN SURFACE ET LES PRECIPITATIONS ISSUES DE SIMULATIONS DU CLIMAT DU DERNIER MAXIMUM GLACIAIRE, REALISEES AVEC LE MODELE DE CIRCULATION GENERALE DE L'ATMOSPHERE DU LMD. LE COUPLAGE ENTRE LES DEUX MODELES NECESSITE UN TRAITEMENT DE DONNEES COMPLEXE, MAIS LES CALOTTES OBTENUES SONT EN MEILLEUR ACCORD AVEC LES DONNEES GEOLOGIQUES SUR L'EXTENSION ET L'EPAISSEUR DES CALOTTES A CETTE EPOQUE
Author: Laure Fontana
Publisher: Springer Nature
ISBN: 3031062590
Category : Social Science
Languages : en
Pages : 263
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Book Description
This book undertakes a thorough study of Reindeer in the Upper Pleniglacial and Tardiglacial societies in France. It addresses two main topics – the economy of animal resources within the societies and the exploitation of Reindeer organized within the annual cycle, in terms of space and time, between 30,000 and 14,000 cal BP in France. The author proposes an analysis and hypothesis regarding the economy of animal resources and the nomadic cycle of the last Paleolithic hunter-gatherer societies, in order to identify a “Reindeer system.” The author discusses the relationship between Reindeer and human mobility and offers some conclusions regarding the annual cycles of nomadism. The volume scrutinizes the distinct eco systems in three regions and its effects on the movements of both human and animal. This book is of interest to zooarchaeologists and prehistorians.
Author: World Data Center A for Glaciology
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 140
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Book Description
Author: João
Cascalheira
Publisher: Cambridge Scholars Publishing
ISBN: 1527542807
Category : Social Science
Languages : en
Pages : 531
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Book Description
The book assembles new insights into humanity’s social, cultural and economic developments during the Last Glacial Maximum in Western Europe and adjacent regions. It gathers original, up-to-date research results on the Solutrean techno-complex, reflecting four major fields of research: data from current excavations; analysis of lithic assemblages; new results from studies on climatic conditions and human-environmental interactions; and insights into artistic expressions. New methodological and analytical approaches are applied, providing significant contributions to Paleolithic research beyond the Last Glacial Maximum.
Author: F. Marret
Publisher: Geological Society of London
ISBN: 1786205416
Category : Science
Languages : en
Pages : 358
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Book Description
This long-awaited book about non-pollen palynomorphs (NPPs) aims to cover gaps in our knowledge of these abundant but understudied palynological remains. NPPs, such as fungal spores, testate amoebae, dinoflagellate cysts, acritarchs and animal remains, are routinely recovered from palynological preparations of marine or terrestrial material, from Proterozoic to recent geological times. This book gives the reader a comprehensive overview of the different types of NPPs, with examples from diverse time periods and environments. It provides guidance on sample preparation to maximize the recovery of these NPPs, detailed information on their diversity and ecological affinity, clarification on the nomenclature and demonstrates their value as environmental indicators. This volume will become the reference guide for any student, academic or practitioner interested in everything else in their palynological preparations.
Author: Hans M. Bolli
Publisher: CUP Archive
ISBN: 9780521367202
Category : Science
Languages : en
Pages : 460
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Book Description
This comprehensive synthesis of our knowledge of the biostratigraphy of marine plankton is the work of an international team of eighteen authors. It covers all the major fossil groups that can be used to date sediments and rocks in the time interval Late Mesozoic to Holocene. Altogether more than 3200 taxa are considered, almost all of which are illustrated and depicted on range charts, making the book a valuable work of reference in the earth sciences. For ease of reference by specialists interested in either calcareous or non-calcareous microfossils, the original work is now divided into two independent volumes. Volume 2 describes siliceous and other non-calcareous microfossils, covering radiolaria, diatoms, silicoflagellates, dinoflagellates and ichthyoliths.
Author: François Djindjian
Publisher: Archaeopress Publishing Ltd
ISBN: 1789697220
Category : Social Science
Languages : en
Pages : 106
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Book Description
The advent of Big Data is a recent and debated issue in Digital Archaeology. Papers consider the historiographic context and current developments, as well as comprehensive examples of a multidisciplinary and integrative approach to the recording, management and exploitation of excavation data and documents produced over a long period of research.
