China ; Climate ; Climatic variability ; Correlation ; Dendrochronology ; Eighteenth Century ; Interannual variability ; Mountain ; North-Western China ; Seasonal variability ; Twentieth Century
Echantillonnage et traitement. Construction de la chronologie. Données climatiques. Corrélation entre les dendrochronologies et les facteurs climatiques. Reconstitution et discussion. Conclusion.
Biogeography ; Canada ; Climatic variation ; Climatic warming ; Dendrochronology ; Dendrology ; Eighteenth Century ; Global change ; Historical geography ; Nineteenth Century ; Northwest Territories ; Tree line ; Twentieth Century ; Vegetation
Dendrochronology and the analysis of historical records from eighteenth, nineteenth, and early twentieth-century expeditions are used to reconstruct the response of the central Canadian treeline to recent climatic variations and to anticipate
C 14 dating ; California ; Dating ; Dendrochronology ; Earthquake ; Methodology ; Quaternary ; Stratigraphy ; United States
A new method is presented for using known ordering or other relationships between 14C samples to reduce 14C dating uncertainty. The order of sample formation is often known from,stratigraphic superposition, dendrochronology, or cross-cutting field
Alps (The) ; C 14 dating ; Dendrochronology ; Glacier ; Glacier fluctuation ; Historical geography ; Lateral moraine ; Little ice age ; Palaeosol ; Switzerland
between 1986 and 1990 were radiocarbon dated. Owing to the good condition of several fossil tree trunks, dendrochronological analyses were also conducted. The AA. evaluate even more precisely how tongue-length and volume of the Lower Grindelwald Glacier
Climate reconstruction ; Czech Republic ; Dendrochronology ; Dendroclimatology ; Dendrology ; Mountain ; Nineteenth Century ; Spruce ; Summer ; Temperature ; Twentieth Century
The tree-rings width and the wood density have been examined in order to reconstruct air temperature of the summer half-year during the period 1804-1989. The results have been compared with a similar dendrochronological reconstruction made
Detail geological and dendrochronological study of the Branice-Stryjów gravel pit is presented. There are very complicated stratigraphical scheme of alluvia with the fossil an Alleröd and Subatlantic palaeomeander infill which indicated aggradation
Dendrochronology ; Dendrology ; Kenya ; Methodology ; Semi-arid area ; Soil erosion ; Tropical zone
areas, is the difficulty of ageing the trees. Therefore, the wood structure of several species growing in the study area was examined, and a number of wood samples dendrochronologically analyzed. The possibility of using root wood for dating is discussed.
Studies of fluvial forms sediments and their dating by 14C and dendrochronological method make possible to distinguish long-term fluctuations in the flood frequency as well as in some cases to distinguish following flood phases which correlate
Dendrochronology ; Dendrology ; Finland ; Holocene ; Lapland ; Palaeobiogeography ; Palaeoclimate ; Pine
Dendrochronological crossdating was used to expand a pre-existing multi-millennial tree-ring chronology for Finnish Lapland. Twelve tree-ring series from sedimentary archives of five small lakes contributed to the oldest part of the chronology
Climate ; Climatic variability ; Dendrochronology ; Dendroclimatology ; Dendrology ; Finland ; Palaeoclimatology ; Solar activity ; Solar cycle ; Statistical analysis
Statistical analysis of a multi-centennial dendrochronological proxy dataset of regional climate, constructed across the latitudinal gradient of 1000 km, was performed. It was shown that centennial (c. 100 year), tri-decadal (27-32 year), bi-decadal
C 14 dating ; Canada ; Dendrochronology ; Holocene ; Methodology ; Ontario ; Palaeogeography ; Quaternary ; Wood
dated at more than 8000 cal yr B.P. The AA. also ask the questions: to what degree does the wood of this species deteriorate over time and does this deterioration represent a barrier to the development of exceptionally long dendrochronological data bases?
Altitude ; Arizona ; Biogeography ; Canyon ; Dendrochronology ; Dendrology ; Ecotone ; Forest ; Forest fire ; Historical geography ; United States of America ; Vegetation dynamics
This study uses dendrochronology and historical fire records to determine the fire history of mixed-conifer forests along an elevation and temporal gradient. The research constitutes a component of a broader mixed-conifer project that investigates
C 14 dating ; Dendrochronology ; Geochronology ; Holocene ; Palaeo-environment ; Palaeoclimate ; Peat bog ; Sweden
A dendrochronological study was made on fossil tree trunk of Scots pine, Pinus sylvestris, preserved in a peat bog at Hanvedsmossen, 50 km SW of Stockholm. Of 56 sampled pines, 48 were assembled in a 204-year long floating chronology (1686-1483 BC