Variations in atmospheric circulation and spatial and temporal patterns of sea-level pressure anomalies over eastern North America are highly correlated in time with temperature trends in the Lake Superior area. Lake Superior region temperature
to variations in pressure anomalies over western Canada and with associated anomalous air flow components across the Lake. Pressure anomalies over the southwestern United States and opposite anomalies to the east have been less important and they have affected
mainly the temperatures over the eastern part of region. About seventy to eighty percent of the temperature variance for the Lake Superior region is related to about twenty-five to thirty percent of the pressure variance for eastern North America.
Datation C 14 ; Diagramme pollinique ; Etats-Unis ; Faune fossile ; Géographie physique ; New York State ; Oiseau ; Paléobiogéographie ; Pléistocène supérieur
11,000 yr B.P. when the extinction of many North American large mammals resulted in severely reduced availability of food for the California Condor and other large scavenging birds.
The climate of the United States since 1895: spatial and temporal changes
exemple, le Sud-Est s'est refroidi de 1,7C, alors que le Far West se réchauffait de 0,3C. De même, depuis le début des années cinquante, les précipitations ont sensiblement augmenté sur l'est des USA, tandis qu'un net fléchissement des abats se manifestait
measured data to areal marking is the central methodological problem involved. Field investigations are accompanied by current laboratory analyses of soil-chemical and water-chemical states. - (IH)
During the development of a severe storm-producing extratropical cyclone which moved across the central United States (3-4 April 1974) the available potential energy within the region under investigation increases. (JPB).
Basalte ; France ; Géographie physique ; Holocène ; Massif Central ; Paléoclimatologie ; Pléistocène supérieur ; Quaternaire ; Quaternaire Paléoenvironnement ; Remplissage de grotte ; Sédimentologie ; Velay
The sedimentological study of 8sites conducts to establish the climatic evolution from the Würm III end to the Post-Glacial end in the Velay (France) and to state the position of industries in chronological limits.
Amérique du Nord ; British Columbia ; Canada ; Datation ; Datation radiocarbone ; Glaciation de Fraser ; Géographie physique ; Pléistocène supérieur ; Quaternaire ; Quaternaire zones moyennes ; Rocky Mountains, North ; Wisconsinien supérieur
Wisconsin Cordilleran glacier ice in the northern States was not begun until after about 18,000 yr B.P. in the southwest of British Columbia and after about 17,500 yr B.P. in the southeast. The rate of glacier growth must have been very rapid in the two
Measurements of the extreme air temperatures in the region of Central-Brandenburg plateaus and lowlands allowed to analyse selected soil series of this area for their thermie properties and to classify them accordingly. Thus, the following grouping
. On the basis of these climatological investigations into the terrain, it was possible to make statements on the thermalconductivity in the mentioned soil series groups and to give recommendations as to the danger of frost in the lowlands (moderate, strong, very
Evaluation of the collection, archiving and publication of daily snow data in the United States
Snow is an important component of the earth's environment and can significantly impact the everyday life. The quality of the data varies from one state to another, although it tends to be weakest where snow is least common. As a result
Synoptic-scale variability in the probability of precipitation from thunderstorms in the United States
A synoptic-scale climatology of precipitation amounts from thunderstorms is developed by analysis of amounts from individual storms for 220 stations in the conterminous United States for the period 1948-1977. The probability of having a thunderstorm
The reference base for compaction state of soils in Impact of water and external forces on soil structure. Selected papers of the 1st Workshop on soilphysics and soilmechanics, Hannover 1986.
Comparison of the results with those of the laboratory experiments show that in virgin soils a compaction state prevails in the subsoil that is caused by higher loads as applied in the lab-experiments. This might be brought about by occasional
extreme drying. The A. concludes that the relation between void ratio and vertical stress is a characteristic of the structural state of a soil profile.
Comparison of the marine oxygen isotope record, the eustatic sea level record, and the chronology of glaciation in the United States of America in Quaternary glaciations in the Northern Hemisphere.