Land use and land cover 1970-1972. Pittsburgh, Pennsylvania.
Fond de carte de l'US GeologicalSurvey, 1958-69. Traitement informatique et emploi de la cartographie automatique pour la représentation des différents types d'utilisation du sol figurés par des nombres sur la carte correspondant à la
Department of the Interior. USGeologicalSurvey, Etats-Unis
Landslide susceptibility mapping by correlation between topography and geological structure : the Janghung area, Korea
Fault ; Geographical information system ; Geological structure ; Landslide ; Natural hazards ; Research technique ; South Korea ; Thematic map ; Topography
The aim of this study is to develop and apply the technique for landslide susceptibility analysis usinggeological structure in a Geographic Information System (GIS). In the Janghung area of Korea, landslide locations were detected from Indian
Remote Sensing (IRS) satellite images by change detection, where the geological structure of foliation was surveyed and analysed. The landslide occurrence factors (location of landslide, geological structure and topography) were constructed into a spatial
database. Using the geometrical relations, the landslide susceptibility was assessed and verified.
Banque de données ; Cartographie automatique ; Donnée cartographique ; Etats-Unis ; Gestion ; Généralités sur la géographie ; Informatique ; Projet ; Système ; USGeologicalSurvey
Le National Mapping Division de l'US GeologicalSurvey élabore un projet de constitution de bases de données cartographiques et géographiques à l'échelle nationale. Exposé du processus futur de cartographie| principes de constitution de la base en
Geological and geomorphological aspects of the central-western area of the Carsoli basin (L'Aquila, Italy)
This paper presents the results of a geological and geomorphological study carried out in the central-western area of the Carsoli basin (AQ) during the survey of the Geomorphological Sheet 367 Tagliacozzo. The existence of a local Middle Pleistocene
volcanism in this part of the Central Apennines has allowed for the acquisition of some useful morpho-stratigraphic, palaeoenvironmental information. This sector is a key area to be considered for a future morpho-evolutional reconstruction of the entire
Impact cratering phenomenon for the Ries multiring structure based on constraints of geological, geophysical, and petrological studies and the nature of the impacting body in Impact and explosion cratering. Planetary and terrestrial implications.
The use of lichen growth rings in lichenometry : some preliminary findings
This study presents some preliminary observations on the marginal growth rings observed in a population of Ochrolechia parella (L.) growing at a maritime site in north Wales, and also a small experiment using lichens with marginal growth rings
[b2] British GeologicalSurvey, Edinburgh, Royaume-Uni
[a1] British GeologicalSurvey, Edinburgh, Royaume-Uni
and to induce a model for landslide hazard zoning using readily available data. The hazard maps are compared, both quantitatively and qualitatively, to a landslide-hazard map of the same area previously created by USGS (United States GeologicalSurvey
Genetic programming (GP) is presented as a technique to induce models that can be used with GIS data to map landslides hazard zones. This study explores the use of GP to discover causative or associative factors most important to landslides
surveys at 10 geologically diverse areas in the delta plain provided a basis for estimating the total volume of accommodation formed by interior-wetland subsidence and subsequent erosion. Results indicate that at most of the study areas subsidence
years near Lochinver. Other growth processes were monitored over the 5 to 7-year study period, including hypothallus growth, areolae development, thallus coalescence, and inter-species competition. All have important implications for the use
[b1] British GeologicalSurvey, Edinburgh, Royaume-Uni
[a1] British GeologicalSurvey, Edinburgh, Royaume-Uni
and field surveys to identify sites of former perennial snowpatches where lichen populations now exist. As an independent check on lichen mortality by snowkill, and the timing of snow patch disappearance, the AA. use a positive-degree day (PDD) approach
This paper presents new lichenometric population data from the Antarctic Peninsula (67°S), and describes a new approach to lichen growth-rate calibration in locations where dated surfaces are extremely rare. The AA. use historical aerial photography
[b1] British GeologicalSurvey, Edinburgh, Royaume-Uni
[a1] British GeologicalSurvey, Edinburgh, Royaume-Uni
[b3] British Antarctic Survey, Cambridge, Royaume-Uni