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Analyse spatiale ; Climat ; Corée ; Cycle climatique ; Eté ; Géographie physique ; Insolation ; Japon ; Précipitation ; Périodicité ; Siècle XX ; Température moyenne ; Variation climatique
Utilise les données de température moyennes mensuelles, de durée d'ensoleillement et de hauteur d'eau, au mois d'août (de 1901 à 1975), pour le Japon et la Corée.

Bilan thermique ; Brouillard ; Centre-périphérie ; Centre-ville ; Climat local ; Climat urbain ; Climatologie ; Géographie physique ; Helsinki ; Nice ; Paris ; Pluie ; Pollution ; Précipitation ; Radiation ; Radiation solaire ; Saint-Nazaire
Cet article présente trois problèmes posés par la climatologie urbaine: augmentation des précipitations dans les villes, modification des rapports énergétiques entre la ville et sa périphérie, urbanisation et pollution.

The presence of the Brunhes-Matuyama magnetic reversal in deep-sea core sediments makes possible an alternative to the usual K/Ar radioisotope method of dating the reversal as found in rocks. The alternative method uses correlations of Northern
Hemisphere summer insolation with oxygen-isotope ratios from tropical cores. The latitude-dependent insolation variations are calculated from planetary mechanics and thus provide a highly accurate astronomical time scale. The insolation variations strongly
influence glacial-ice volume fluctuations that dominate the oxygenisotope ratio changes recorded in core sediments. The summer half-year insolation variations are identified with corresponding isotope-ratio changes in cores from the present through glacial
isotope-ratio minima in the two cores (relative to ages based on uniform overall deposition) to match the ages of low-eccentricity insolation minima. The age shifts reflect residual nonuniformities of deposition. The validity of this matching procedure

Sequence of sediments at Locality 1 in Zhoukoudian and correlation with loess stratigraphy in northern China and with the chronology of deep-sea cores
-L4) in China and with deep-sea-core oxygen-isotope stages 16-6. The 14th layer upward (730,000-230,000 yr B.P.) represents at least four glacial cycles.

Five widespread tephra layers are found in late Quaternary sediments (0130,000yr B.P.) of the Eastern Mediterranean Sea. These layers have been correlated among abyssal cores and to their respective terrestrial sources by electron-probe
microanalysis of glass and pumice shards. Major element variations are sufficient to discriminate unambiguously between the five major layers. Oxygen isotope stratigraphy in one of the cores studied was used to data four of the five layers. Two of the widespread
layers are derived from explosive eruptions of the Santorini volcanic complex: the Minoan Ash (3370yr B.P.) and the Acrotiri Ignimbrite (18,000yr B.P.). An additional layer, found in one core only, is most likely correlated to the Middle Pumice Series

A Younger Dryas ash bed in western Norway, and its possible correlations with tephra in cores from the Norwegian Sea and the North Atlantic
having a bimodal basaltic and rhyolitic composition. The geochemistry of the glass shards suggests an Icelandic source. By means of stratigraphic position and geochemistry, the ash is correlated with ash zones found in cores from the continental shelf

Comparisons of sedimentation rates obtained by Pb and pollen analyses of 1-m cores collected throughout the Potomac Estuary show good agreement in the majority of cores that can be analyzed by both methods. Most of the discrepancy between
the methods can be explained by the analytical precision of the Pb method and by the exactness with which time horizons can be identified and dated for the pollen method. X-radiographs of the cores and the distinctness of the pollen horizons preclude

High resolution isotope study of the latest deglaciation based on Bermuda Rise cores
A stable isotope and C investigation of carbonates from three late Quaternary cores with high rates of sedimentation from the northeastern Bermuda Rise has produced the highest resolution record of the glacial maximum to Holocene stable isotope

Chemical composition of ice containing tephra layers in the Byrd Station ice core, Antarctica

Rates of sediment accumulation in pollen cores from small lakes and mires of eastern North America

In this paper, the stable isotopic stratigraphies of two size fractions (>38 and

LATE PLEISTOCENE PALEOCLIMATOLOGY: PLANKTONIC FORAMINIFERAL ANALYSES OF SEDIMENT CORES FROM THE CENTRAL NORTH ATLANTIC

Revised magnetostratigraphies confirm low sedimentation rates in Artic Ocean Cores

Past Antarctic Peninsula climate (1850-1980) deduced from an ice core isotope record

Carbonate content and faunal composition of two gravity cores from the coastal Arabian sea provide evidence of a major environmental change in surface ocean waters about 13,000 yr B.P. Radiocarbon dating indicates that deposition rates ranged from
1.8 to 9.8 cm/10 yr, with a major change in rate occurring in one core at about 7500 yr B.P.

Palaeo-climatic studies on ice cores in Climatic variations and variability: facts and theories.

Magnetic, palynological and radiocarbon correlation and dating comparisons in long cores from a northern irish lake

Geomorphology of metamorphic core complex mountains in Arizona and S. E. California

Désilification (sic) des silex taillés

Analytical study by X Ray diffrection and Scanning Microscope of highly weathered prehistoric flints. Thanks to ressembling of debitage products, differently weathered though they are coming from the same core, it is proved that a part of the silica

Postglacial paleogeography in the Tokoro and Sarobetsu lowlarids, Hokkaido, is discussed based on facies and fossil analyses of undisturbed boring cores.

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