Colonization and weathering of engineering materials by marine microorganisms : an SEM study
Biogenic process ; Biogeomorphology ; Chemical erosion ; Coastal environment ; Cornwall ; Electron microscope ; England ; Intertidal zone ; Lithology ; Micro-organism ; United Kingdom ; Weathering
processes in the intertidal zone. The implications of differences in initial biogeomorphic responses of materials for long-term rock weathering, ecology and engineering durability are discussed.
in Cornwall, UK. The results presented demonstrate the influence of substratum lithology, hardness and texture on the nature of early micro-scale colonization, and the susceptibility of different engineering materials to organic weathering and erosion
[b6] Camborne School of Mines, College of Engineering, Mathematics and PhysicalSciences, Univ. of Exeter in Cornwall, Penryn, Royaume-Uni
[b1] Geography, College of Life and Environmental Sciences, Univ., Exeter, Royaume-Uni
the user to implement new routines and modules appropriate to fit specific needs as well as to adapt the system to study other dynamical processes where continuous observation is required. The software and image data base can be obtained as freeware.
A low cost, automated, remote monitoring video system, SIRENA, built on standard commercial off-the-shelf (COTS) components and implemented with open source software is presented. The system has been implemented in a coastal area to perform image
acquisition and processing, generating statistical products and transferring the information from the field to a central node where post-processing and data visualization are made available to the general public. The open structure of the software allows
[b2] Dep. of Hydraulic Engineering, Univ. de Castilla La Mancha, Ciudad Real, Espagne
[b4] Dep. of Mathematics and Computer Science, Univ. de les Illes Balears, Palma, Espagne
This article outlines the airborne imaging spectrometers of today and the space-borne imaging spectrometers of tomorrow, the techniques for processing data from imaging spectrometers and the roles that imaging spectrometry is finding in those areas
of geological, aquatic, ecological and atmospheric research which are of interest to physical geographers.
Die zeitliche Einstufung geologischer Prozesse für ingenieurgeologische Aufgaben im Bergbau und Bauwesen unter besonderer Berücksichtigung des Karstes (Temporal rating of geological processes for Engineering geological tasks in mining
Physical geography
Temporal rating of geological processes has great importance for carstification processes in salt and gipsum areas. Two problems are discussed : determination of age by geological methods and prognosis of recent geological processes using
tRIBS-Erosion: A parsimonious physically-based model for studying catchment hydro-geomorphic response
The AA. propose a framework that integrates a geomorphic component into the physically-based and spatially distributed TIN-based Real-time Integrated Basin Simulator (tRIBS) model. The coupled model simulates main erosive processes of hillslopes
(raindrop impact detachment, overland flow entrainment, and diffusive processes) and channel (erosion and deposition due to the action of water flow). In addition to the spatially distributed, dynamic hydrologic variables, the model computes the sediment
[b4] Dep. of Civil and Environmental Engineering and Dep. of Earth and Atmospheric Sciences, Georgia Inst. of Technology, Atlanta, Etats-Unis
[b1] Dep. of Civil and Environmental Engineering, Univ. of Michigan, Ann Arbor, Etats-Unis
[b3] Dep. of Civil and Environmental Engineering, Univ. of Washington, Seattle, Etats-Unis
The use of acoustic Doppler current profilers (ADCP) for discharge measurements and three-dimensional flow mapping has increased rapidly in recent years and has been primarily driven by advances in acoustic technology and signalprocessing. The new
utility, the Velocity Mapping Toolbox (VMT), allows rapid processing (vector rotation, projection, averaging and smoothing), visualization (planform and cross-section vector and contouring), and analysis of a range of ADCP-derived datasets. The paper
documents the data processing routines in the toolbox and presents a set of diverse examples that demonstrate its capabilities. The toolbox is applicable to the analysis of ADCP data collected in a wide range of aquatic environments and is made available
[b6] Dept. of Geology, Mechanical Science and Engineering and Ven Te Chow Hydrosystems Lab., Univ. of Illinois, Urbana, Etats-Unis
[b1] Dept. of Geography, Environment and Earth Sciences, Univ., Hull, Royaume-Uni
[b2] U.S. Geological Survey, Illinois Water Science Center, Urbana, Etats-Unis
[b3] U.S. Geological Survey, Washington Water Science Center, Tacoma, Etats-Unis
[b4] Dept. of Geography and Geographic information Science, Univ., Urbana-Champaign, Etats-Unis
Geomorphological river channel reconnaissance for river analysis, engineering and management
Applied geomorphology ; Bank erosion ; Channel geometry ; England ; Environmental conservation ; Flood ; Fluvial processes ; Habitat ; Hydraulic works ; River bed ; Survey ; United Kingdom
Geomorphological studies involving river reconnaissance, analysis (both qualitative and quantitative) and assessment can supply information on the form and physicalprocesses operating in a fluvial system. This information is of value to river
engineers and managers wishing to work with, rather than against, nature when undertaking engineering and maintenance operations or devising management policies. The utility of geomorphological river reconnaissance is illustrated using a case study from
Map. The AA. describe the satellite image mapping procedures developed at the Technical University of Berlin and applied in practice by FPK Consulting Engineers. Some related pproblems are discussed in details, eg mosaicking, merging of different tpes
Digital as well as photographic satellite image data offer a high potential of topographic and thematic information. The paper discusses the application of such data for mapping purposes. Main emphasis is laid on a new map type, the Satellite Image
and climatic forcing. They subsequently applied the model to reconstruct the sediment flux from a tectonically perturbed catchment in central Italy. Finally, they coupled their model to DeltaSim, a process-response model simulating fluvio-deltaic stratigraphy
changes induces a complex sediment flux signal, and produces characteristic stratigraphic architectures and shoreline trajectories.
[b2] Dept. of Earth Science and Engineering, Imperial College, London, Royaume-Uni
[b1] Dept. of Geoscience and Engineering, Univ. of Technology, Delft, Pays-Bas
Solifluction processes on permafrost and non-permafrost slopes : results of a large-scale laboratory simulation
The AA. compare solifluction processes observed in 2 large-scale laboratory physical models that had identical slope geometries and soil characteristics, but contrasting thermal regimes. Model 1 was subject to cycles of freezing and thawing from
upwards. These experiments were run in parallel with scaled centrifuge physical modelling experiments and validated against field studies in Dovrefjell, Norway and Svalbard. The results show that soil shear strain occurred during thaw consolidation
[b1] School of Earth and Ocean Sciences, Univ., Cardiff, Royaume-Uni
[b4] Faculty of Engineering, Univ., Auckland, Nouvelle-Zelande
[b5] School of Engineering, Univ., Dundee, Royaume-Uni
A Kisalfold muholdas foldtudomanyi vizsgalata. (An analysis of the Little Plain of earth sciences viewpoint from satellite images)
Géographie de l'Europe ; Géographie physique ; Hongrie ; Image Landsat ; Milieu naturel ; Télédétection
Information from the processing of LANDSAT-1,-2 and-3 images is interpreted to delimit the Little Plain and compared with the data/on relief, drainage, surficial geology, groundwater conditions, soil erosion and deep geology/accumulated by decades
Amazonas rio ; Asie ; Asie du Sud ; Brahmaputra ; Brésil ; Chenal anastomosé ; Congo RD ; Congo fleuve ; Hydrologie fluviale ; Image sar ; Plaine d'inondation ; Télédétection
Resources Satellite are used to compare and contrast floodplain processes in the Amazon and Congo River basins. Measurements of temporal water level changes over the 2 areas reveal clearly different hydraulic processes at work. Second, Shuttle Radar
[b1] School of Earth Sciences, Ohio State Univ., Columbus, Etats-Unis
[b4] Dep. of Civil and Environmental Engineering, Tennessee Technological Univ., Cookeville, Etats-Unis
[b5] National Center for Computational Hydroscience and Engineering, Univ. of Mississippi, Oxford, Etats-Unis
Based on 4 land-cover type maps interpreted from remote sensing TM images of 1990, 1995, 2000 and 2005, combining gradient analysis with landscape metrics, the quantified spatial pattern and its dynamics of urbanization in Guangzhou was got. Three
around the city center. Some interesting and important ecological implications were revealed under landscape patterns of 2 transects or radiation zones, and that was the important step to link pattern with processes in urban ecological studies
[b3] School of Environmental Science and Engineering, Sun Yat-Sen Univ., Guangzhou, Chine
[b1] School of Geographical Sciences, Univ., Guangzhou, Chine
[b2] Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine
Sea floor engineering geomorphology : recent achievements and future directions
Changing the face of the earth-engineering geomorphology
This paper reviews some of the methods for assessing sea floor geomorphology for engineering sites and considers the capabilities of some of the recently developed investigation technology. Some of the main sea floor processes which can affect
engineering decisions are described, and important gaps in knowledge identified as tasks for the future. Case studies of specific investigations for particular engineering sites are presented.
Biogenic process ; Congo DR ; Ecosystem ; Geomorphogenesis ; Lubumbashi ; Remote sensing ; Satellite imagery ; Spatial distribution ; Termite mound ; Tropical zone
This study examines the spatial distribution patterns and morphological characteristics of Macrotermes falciger mounds in the peri-urban zone of Lubumbashi, D.R. Congo. Spatial patterns of mounds were assessed using high-resolution satellite images
[b1] Dept. of Geology and Soil Science (WE13), Lab. of Soil Science, Univ., Gent, Belgique
[b2] Dept. of General Agricultural Sciences, Lab. of Soil Science, Univ., Lubumbashi, Congo, la Republique Democratique du
[b6] Fac. of Bioscience Engineering, Dept. of Applied Biosciences, Gent, Belgique
Landslide process and impacts : A proposed classification method
as general and particular, and discusses them in an environmental and socio-economic framework. The findings illustrate that the rate of physical or socio-economic losses critically impact populated regions and civilization centers. This paper attempts
[b1] Dep. of Civil Engineering, Islamic Azad Univ., Zanjan, Iran, Republique Islamique d'
[b2] Dep. of Industrial Engineering, Islamic Azad Univ., Zanjan, Iran, Republique Islamique d'
[b3] Dep. of Geological Engineering, Univ., Aksaray, Turquie
[b4] Inst. of Physics and Materials Science (IPM), Dep. of Materail Sciences and ProcessEngineering, Univ. of Natural Resources and Applied Life Sciences, Wien, Autriche
[b2] Inst. of Soil and Water Conservation, Chinese Academy of Science, Shaanxi, Yangling, Chine
[b3] Inst. of Soil Science, Dep. of Forest and Soil Sciences, Univ. of Natural Resources and Applied Life Sciences, Wien, Autriche
Aeronautic engineering ; Aerospatial engineering ; Defence ; Industrial branch ; Industry ; International cooperation ; Privatisation ; Restructuring process ; Russia
Le secteur spatial, qui était l'image de la puissance de l'URSS, semble se maintenir à flot grâce à ses compétences et réserves acquises avant 1990, même si l'aide de l'Etat s'amenuise. Selon l'A., il a commencé à commercialiser sa production