of the depressions of superficial deposit (by topographical mapping, morphological mapping) and the morphology of the bedrock (by Vertical Electrical Sounding). He analysed the denudation types of superficial deposit found at the bottom of depressions of bedrock
(on the topographical map using slope angle class data). In the paper the depressions of superficial deposit were classified. - (AM)
Non-channel storm period sediment supply from a topographicaldepression under forest in the Keuper region of Luxembourg in Present day geomorphological processes.
Reconnaissance level geomorphological observations in the northern part of Evia (Euboea) Island, suggest that a major topographic feature, the Nileas depression (NDpr) corresponds to a previously undetected graben structure, bounded by fault zones
of ENE-WSW to NE-SW general strike active in the Quaternary. Moderate earthquakes and focal mechanisms of micro-eartquakes inside the depression suggest that these fault zones may still be accommodating strain also today.
Alases are very dynamic, often geochemically closed thermokarst basin topographic forms that have a thin active layer and unique conditions of pedogenesis and vegetation development. In central Yakutia alone, there are about 16,00 alases
, with a total area of more than 4,400 km2. A unique process occurs in thermokarst depressions of central Yakutia, and it facilitates the formation of the alases themselves, as well as unique polycyclic parent materials. Due to periodic desiccation of lakes
Geomorphological and geological investigations on closed topographicdepressions and valley systems on the Drente plateau allow correlations to be made between the location of pingo remnants on the plateau and the Weichselian drainage pattern
depression, steep hillslope, moderate hillslope and moderate footslope), topographic setting and limestone purity accounting for much of the inter-plot variability.
disturbance to the pavement cover, if not too extensive, can also be repaired by this mechanism. The cross-surface flux of stones also represents a powerful smoothing agent, lowering topographic highs and filling topographicdepressions. The results presented
system at the interglacial time, then it was filled with sediments during the 1st half of the Valdai glaciation and completely buried during the 2nd half of glaciation, changing from linear hollow to circular flat-bottom depression and finally flat
erosional landforms occur rather close to the day surface and may influence indirectly the modern soil and topographic pettern. - (L'A.).
Aeolian features ; Calcrete ; Closed depression ; Geomorphogenesis ; Geomorphometry ; Grain size distribution ; Groundwater ; Hydrology ; New Mexico ; Palaeo-environment ; Quaternary ; Statistics ; Texas ; Topography ; United States of America
This paper provides a statistical description of the playas and assesses the relationships, if any, between playa variables and the occurrence of lunettes. Data were collected from a subset of 40 topographic maps, digitized on a GIS, and analyzed
. It also serves to reinforce the significance of topographicdepressions (pans and valleys) upon the formation of calcrete, silcrete and calcrete-silcrete intergrade duricrusts within the Kalahari.
The AA. investigate 2 kinds of distinct micro-topographic features that commonly occur on broad, planar surfaces of barren desert pavements in the Sonoran Desert : plant scar mounds and plant scar depressions. Eidence is presented that both features
In this study, three depressions in South France (Orniac, Lot) were identified and characterized using combined geophysical methods. Apparent conductivity mapping allows precise definition of dolines corresponding to topographicdepressions. It also
Three-dimensional topographic on the foreshore zone of sandy beaches
Topographic surveys are carried out to elucidate the characteristics of topographic changes in the foreshore zone of two study sites on the Kashima Coast, Ibaraki Prefecture (Kanto). Three types of topographic change were put in order and a three
Topographical effects on the equilibrium-line altitude on glaciers
The most useful parameter to quantify the climatic effects on a glacier is the equilibrium-line altitude (ELA) : a line on the glacier where accumulation equals ablation. In this paper, the topographical and morphological effects on the ELA
the coalfields of the former coal mine Zollverein. Two examples from the cities of Essen and Dortmund analysed in detail reveal that not only depressions but also elevation features are affected by mining subsidence. These kinds of surface transformations
are not visible in the field without a comparison of digital topographical models. The average amount of a net surface lowering was calculated for all maps digitised and analysed, resulting in values between 0.5 m for the map of Kamen, located at the eastern
are therefore required. Here the AA. test and modify a state-of-the-art carving algorithm for flow network derivation in a low-relief, agricultural landscape characterized by a large number of spurious, topographicdepressions. The results show
protects the ice from melting. The occurrence of fine sediments on the contemporary hills suggests that the end moraine complex has undergone at least one cycle of topographic inversion. The analysis of landforms and deposits occurring in the end moraine
complex of the Ragnarbreen revealed patterns in the morphology such as the lineation of hillocks and depressions, parallel to the edge of the moraine complex.
preferentially in a trough between Isle Royale and the north shore, and to a lesser extent in other topographicdepressions| bottom currents generated by storm waves prevent clay accumulation on till or bedrock in the open lake wherever the bottom is shallower
Official topographic cartography in Germany looks back on a history of more than two hundred years. Through various stages of development its analogue map products reached their highest level in the nineteen-eighties. Since 1990, i.e
. the reunification of Germany and the introduction of the topographical ATKIS-information system, topographic cartography and its new digital products developed as an integral part of the new system. At present, German official topographic cartography