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  • Here the AA. report on a reconnaissance survey of the 137Cs content of recent alluvial sediments in the Hunter valley, N.S.W., Australia. They attribute the absence of 137Cs from recent sediments, in part, to the nature and magnitude
  • 1991
  • Automated recognition of valley heads from digital elevation models
  • An automated technique for recognizing valley heads from digital elevation models is presented. The technique has been developed for valley head recognition because valley heads are known locations of geomorphological activity and because areal
  • features have been largely ignored in the automated landform recognition literature. The problem of valley head recognition is divided into valley head location and valley head delineation, and the technique is developed using a DEM representing a simple
  • 1991
  • The evolution of the Vistula river valley between Cracow and Niepołomice in late Vistulian and Holocene times
  • Evolution of the Vistula river valley during the last 15 000 years, part IV
  • Alluvium ; Climatic variation ; Drainage network ; Fluvial processes ; Holocene ; Human impact ; Poland ; Quaternary ; Sedimentology ; Valley ; Valley floor evolution ; Wisła
  • This is a new synthesis of the evolution of the section of the Vistula river valley. There are changes in the channel patterns and parameters, sedimentological characteristics of the different alluvial deposits of different ages, the reflection
  • of both climatic fluctuation and human activity in the valley floor morphology and in alluvia. - (DG)
  • 1991
  • All the valleys in Wisconsin : GNIS and freshmen
  • 1991
  • Morphotectonics of the Baikal rift valley, Eastern Siberia, USSR
  • The Baikal rift valley, the central segment of the Baikal rift zone located in southern East Siberia, consists of two large depressions separated by an interdepressional uplift. The interdepressional uplift consists of subsiding residual steps
  • and active tilted horsts. The large dimensions of the Baikal rift valley are evidently due to its being confined to the faults striking NE-SW.
  • 1991
  • Deforestation in the Upper Pokhara Valley Nepal
  • Deforestation ; Development strategy ; Forest ; Land use ; Nepal ; Population pressure ; Valley
  • 1991
  • The ecogeographic distribution of the population in the Yangtze River valley
  • China ; Population density ; Population distribution ; Regional disparities ; Settlement ; Urban population ; Valley ; Yangtze
  • 1991
  • The application of fuzzy classification to soil pH profiles in the Lockyer Valley, Queensland, Australia
  • This paper examines the application of fuzzy classification to the pH profiles of soils in the alluvial plain of the Lockyer Valley. Fuzzy classification usefully demonstrates relationships between profiles among the transect and is a potentially
  • 1991
  • Application of remote sensing to geomorphological studies of the Bagnati valley south of Kathmandu, Nepal
  • Fluvial processes ; Geomorphology ; Gully erosion ; Map ; Mountain ; Nepal ; Remote sensing ; Research technique ; Slope ; Soil erosion ; Valley
  • Stereoscopic remote sensing data between 1971 and 1986 for the Bagmati valley revealed no overall increase in erosion losses, although local shifts in eroded terrain were detected.―(DWG)
  • 1991
  • Nivation hollows and valleys in the fossil coast cliff Landborgen at Helsingborg, South Sweden
  • Most of the main nivation hollows and valleys are older than the last phase of the Weichselian glaciation as indicated by the fact that they contain till or morainic boulders from the north eastern ice, the main ice stream in Skåne during the last
  • glaciation. Hydro-thermal water has made hollows and rill water small valleys in the cliff where the nivation processes begun. The nivation processes were caused by drifting snow from the east during the Weichselian.
  • 1991
  • Klimatologische und vegetationskundliche Höhengradienten im Death Valley National Monument
  • Gradients climatologiques et botaniques dans le Death Valley National Monument
  • Les montagnes bordant la dépression de la Death Valley sont un modèle idéal pour étudier les gradients verticaux, climatiques et écologiques, dans les zones arides, car cette région représente un désert extrême avec un potentiel botanique important
  • 1991
  • Ambootia Landslide Valley in the Darjeeling (Himalaya) active science 1968
  • Himalaya ; India ; Landslide ; Precipitation ; Raindrop erosion ; Slope ; Slope dynamics ; Valley
  • The paper presents geomorphological, soil and hydrological research on the landslide valley located in Ambootia T.E., continuously active since the extreme rainfall in October 1968 exceeding 890 mm. The landslide covers an area of 56.5 ha, its
  • lenght exceeds 1 300 m. The present landslide starts at 1 065 m a.s.l. and ends at the apex of proluvial fan at 488 m a.s.l. In 1968 an old V-shaped side valley has been overdeepen about 30-60 m by big debris flow and rockfall. Further transformation
  • 1991
  • High-technology agglomeration and the labor market : the case of Silicon Valley
  • These relations are examined, drawing upon the results of a mailed questionnaire survey of firms in the semiconductor industry. The analysis is focused upon the cluster of specialized firms in Silicon Valley, to determine the contribution of local
  • 1991
  • Slow soil movement in Tarfala valley, Kebnekaise Mountains, Swedish Lapland
  • Between 1982-1990, on the slopes of Tarfala valley above timberline, at an altitude 1140-1220 m a.s.l., soil movement was measured by means of wooden pegs (columns) inserted in the soil. Three types of soil movement were distinguished : two were
  • 1991
  • Vegetation response to climatic change in central Rift Valley, Kenya
  • Datation C14 ; Diagramme pollinique ; Géographie de l'Afrique ; Holocène ; Kenya ; Palynologie ; Paléo-environnement ; Quaternaire ; Rift Valley ; Sédiment lacustre ; Variation climatique ; Végétation
  • 1991
  • Allier ; Auvergne ; Fluvial hydrology ; France ; Freshwater environment ; Massif Central ; Streams ; Valley
  • 1991
  • Paleomagnetic evidence for repeated glacial Lake Missoula floods from sediments of the Sanpoil River valley, northeastern Washington
  • 1991
  • The genesis of terraces in the three gorge valley of the Yangtze River
  • 1991
  • Pleistocene glaciation of the King Valley, Western Tasmania, Australia
  • 1991
  • Patterned microrelief in grasslands in cold upland valleys in Papua New Guinea
  • Circular to elongated depressions forming a regular pattern of microrelief have been investigated on gently sloping, poorly drained grasslands in upland valleys in montane Papua New Guinea. The patterned microrelief is the result of a complex
  • 1991