Formerly the A. analyzed drainage in two dimensions, in horizontal projection. Stream slope as a vertical component is another important element. He determined the slope index values (SI) and represented the slope curves of the major streams
in a semilogarithmic system. He reffered them into 4 groups. - (DLO)
Utilisation du radio-traceur H-He dans l'étude des systèmes aquifères. Les courbes H-He sont calculées pour une courbe type d'apport de tritium et pour des systèmes pouvant être approximés par les modèles exponentiels de dispersion.
This study offers an example of regression following factor analysis. In substituting correspondence analysis for the principal components analysis of Imbrie and Kipp, the A. improves on the results of them: firtsly, he obtains higher correlation
coefficients| and secondly he calculates these coefficients from a more appropriate reference sample, from which a more exact estimation of the quality of the regression is obtained.
to explain in general terms why stratigraphic charcoal data have not produced the record of past fire expected from the physical processes presumed to be important by paleoecologists. He shows that results obtained by the two methods are reasonable in view
of the physics of particle motion. He focuses on eolian processes, because surface runoff is not an important process for charcoal transport to lakes.
Author evaluates the marks of periglacial environment within the system of climamorphogenetic regions of the world. He suggests to distinguish the active periniveoglacial environment, with and without the simultaneous occurrence of glaciers
The different methods of datation using the uranium series are described: Th/U, Pa/U, U/He as well as the methods of determining the sedimentation rates: Th, Th/Th, Pa and Pa/Th. The different materials on which they can be applied are reviewed
Xuxiake's (1586-1641) contributions are many-sided but the most important is in the study of karsts. He pointed out the significance of fluvial erosion and gravity process in the formation of karst landscape, described in detail morphological forms
RUHE (1975) has attempted to show that fully developed slopes of similar form occur in different regions despite climatic variations. He has however failed to support this suggestion with adequate evidence. Some comments to this effect already
interpretation. He stresses their value as an indicator for the fluvio-periglacial nature of the terrace deposit and as an aid to stratigraphic interpretation.
The problems involved in the transformation of natural features into indicators reflecting social requirements and interferences are expressed, based on information from literature and experience gained by the author while he cooperated
datation 230Th/234U et He/U des terrasses coralliennes: l'étage 5 correspond aux terrasses de Worthing (82000BP), Ventnor (105000BP) et Rendezvous Hill (125000BP), l'étage 7 aux terrasses de Kendal Hill (180000BP), Kingsland (200000BP) et Aberdare (220000BP