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1.
Interciencia ; 26(9): 397-403, sept. 2001. ilus, tab, graf
Article in Spanish | LILACS | ID: lil-341028

ABSTRACT

El pulso de inundación es el principal regulador en el establecimiento de los bosques de sauce criollo (Salix humboldtiana Willd) del río Paraná inferior. El control se expresa principalmente a través de dos procesos: a)la aparición de bancos colonizables por esta especie que, por sedimentación pueden llegar a transformaciones en albardones y b)la erosión fluvial, que elimina progresivamente los bosques ya establecidos. Varios rasgos de la biología del sauce, como producción de gran cantidad de semillas que germinan en ambientes muy húmedos y alejados de los árboles de la generación anterior, alta velocidad de crecimiento, adaptaciones a la inundación, han permitido su supervivencia en este ambiente tan dinámico


Subject(s)
Environment , Fluvial Erosion , Rivers , Soil Moisture , Trees , Argentina , Science
2.
In. Association of State Floodplain Managers. From the mountains to the sea - Developing local capabilities : Proceedings of the Nineteenth Annual Conference of the Association of State Floodplain Managers. Madison, Association of State Floodplain Managers, 1995. p.25-8.
Monography in En | Desastres -Disasters- | ID: des-12436

ABSTRACT

Two vigorous weather systems during the second half of August 1994 brought in deep levels of moisture out of the Bering Sea to northwest Alaska. With each system, strong northwesterly flow caused heavy precipitation, first as the warm moist air was brought in over the existing cold air, and again in advance of the passage of the cold front. Rain was heaviest on west- and southwest-facing slopes, enhanced by the terrain upslope. Due to the southwest-northeast orientation of the Koyukuk River basin, it was hit especially hard by these rains


Subject(s)
Floods , 34661 , Fluvial Erosion , Rivers , Alaska , Damage Assessment , Local Health Strategies , Post Disaster Resettlement
3.
In. Wadge, Geoff. Natural hazards and remote sensing. s.l, <The> Royal Society;<The> Royal Academy of Engineering, 1994. p.59-63, ilus, mapas.
Monography in En | Desastres -Disasters- | ID: des-5576

ABSTRACT

past, satellite observations of floods have been hampered by the presence of clouds and high resolution satelite data have not been available in near real - time. Initial tests in the UK have shown the ERS - 1 SAR to be a suitable sensor for flood mapping and fast delivery products can be obtained within hours of satellite acquisition. Suitable data acquisition, processing and dissemination methodologies are required tofacilitate worldwidw practical applications. An EC - European Space Agency funded pilot project for flood hazard assessment and mapping using ERS - 1 in the Philippines has recently begun. (AU)


Subject(s)
Satellite Communications , Radar , Fluvial Erosion , Floods , Risk Assessment , Information Systems
4.
In. U.S. Central United States Earthquake Consortium (CUSEC). Hazard assessment preparedness, awareness, and public education emergency response and recovery socioeconomic and public policy impacts : Proceedings. Memphis, Tennessee, U.S. Central United States Earthquake Consortium (CUSEC), 1993. p.317-26, ilus.
Monography in En | Desastres -Disasters- | ID: des-6610

ABSTRACT

The unconsolidated sedimets (soils) underlying evanville, Indiana, are an important element contributing to the cities seismic risk. Knowledge of the shear - wave velocity of the unconsolidated sediment column is essential in predicting soil period, amplification potential, liquefaction risk, and other site responses to seismic shaking (AU)


Subject(s)
Earthquakes , Risk Assessment , 25686 , Soil Characteristics , Geology , Fluvial Erosion
5.
In. Ortlieb, Luc, ed; Macharé, José, ed. Paleo - ENSO records international symposium : Extended abstracts. Lima, Perú. Nuevo Mundo, 1992. p.87-92, ilus.
Monography in Es | Desastres -Disasters- | ID: des-9240
6.
In. Almeida - Teixeira, M. E; Fantechi, R; Oliveira, R; Gomes Coelho, A. Environment and quality of life : Natural hazards and engineering geology prevention and control of landslides and other mass movements : Proceedings. Brussels, Commission of the European Communities, 1991. p.3-19, ilus. (Environment and Quality of Life).
Monography in En | Desastres -Disasters- | ID: des-5744

ABSTRACT

Engineering geologists and other professionals concerned with the study and prevention of landslides and other mass movements need to have a clear idea of the basic concepts of geomorphology and landform evolution. Fluvial geomorphology is an important subtopic of this scientific field. Rainfall and floods play an important role in the evolution of fluvial forms. Therefore they are important agents of the geomorphology evolution. (AU)


Subject(s)
Floods , Fluvial Erosion , Rainwater , Chemical Precipitation , Risk Assessment , Hydrological Models
7.
In. Almeida - Teixeira, M. E; Fantechi, R; Oliveira, R; Gomes Coelho, A. Environment and quality of life : Natural hazards and engineering geology prevention and control of landslides and other mass movements : Proceedings. Brussels, Commission of the European Communities, 1991. p.21-34, ilus. (Environment and Quality of Life).
Monography in En | Desastres -Disasters- | ID: des-5745

ABSTRACT

The erosion and sedimentation processes as presented as natural phenomena linked with hydrologic and soil processes. The fundamental factors for erosion characterization are defined and its quantification is refered to. Sedimentation processes, including the sediment transport phenomena, are classified in order to understand the influence of these processes in mass movements. The evaluation of erosion and sedimentation processes is made, as well as an analysis of errors. Some examples and case studies are included for illustration. (AU)


Subject(s)
Sedimentation , Erosion , Fluvial Erosion , Risk Assessment
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