نتایج جستجو برای: littoral erosion
تعداد نتایج: 33111 فیلتر نتایج به سال:
The Southwest Washington Coastal Erosion Study is a five-year, multi-disciplinary research project designed to build a knowledge foundation as a sound basis for addressing coastal management objectives. The purpose of the Study is to gain an understanding of a regional coastal sediment system, the Columbia River littoral cell, in order to support local, state, and federal decision-making in lan...
Water level regulation for purposes of hydropower production has caused notable changes in the littoral zones of regulated lakes in northern Finland. Marked geomorphological changes have taken place in the lakes with a raised water level. Lowering of the ice cover during the winter has also caused rapid changes in the littoral. Changes in the environmental conditions and aquatic macrophyte comm...
The relationships between long-term (;115-year) phosphorus and sediment accumulation and submerged macrophyte biomass were determined both within a submerged macrophyte bed and among beds in Lake Memphremagog, Quebec, Canada. Strong relationships between present submerged macrophyte biomass and littoral-zone sediment and phosphorus accumulation rates both within and among macrophyte beds yielde...
Cameroon's coast is a great asset for tourism and the economic recovery of Cameroon. There is a recent population surge towards the coast of Cameroon, which calls for attention to the balance between urban areas and natural areas. It is therefore imperative to promote business development and jobs related to the coasts, coastal waterways and shorelines of lakes on the one hand and meet the envi...
In this paper, longshore sediment transport in littoral zones is investigated. For investigation of sediment transport in the nearshore zone, the effects of waves, currents and topographical conditions of coast are considered. Linear wave theory was used for the investigation of the wave behaviour. Governing equations of littoral current are continuity and momentum ones. For calculating concent...
In this paper, longshore sediment transport in littoral zones is investigated. For investigation of sediment transport in the nearshore zone, the effects of waves, currents and topographical conditions of coast are considered. Linear wave theory was used for the investigation of the wave behaviour. Governing equations of littoral current are continuity and momentum ones. For calculating concent...
In recent decades, coastal erosion phenomena have increased due to climate change. The frequency and intensity of extreme events the poor sediment supply by anthropized river basins (dams, weirs, culverts, etc.) a crucial role in erosion. Therefore, an integrated analysis is produce detailed accurate vulnerability information support mitigation strategies. This research aimed assess Sicilian co...
The main objective of the paper is paleo digital elevation model (paleoDEM) detection and modelling, a multidisciplinary approach involving geodesy, archaeology, and paleoenvironmental studies. The digital elevation model (DEM) is an important data layer to understand settlement pattern and socioenvironmental contexts and evolution that archaeologists are using together with GIS analysis. It ca...
This study investigated the relationship between spatial variations in predation risk and abundance of northern redbelly dace Phoxinus eos at both macroscale (littoral v. pelagic zones) and microscale (structured v. open water habitats in the littoral zone) of Canadian Shield lakes. Minnow traps were placed in both structured and open water habitats in the littoral zone of 13 Canadian Shield la...
[1] Of more than 400 filled lakes now identified on Titan, the first and largest reported in the southern latitudes is Ontario Lacus, which is dark in both infrared and microwave. Here we describe recent observations including synthetic aperture radar (SAR) images by Cassini’s radar instrument (l = 2 cm) and show morphological evidence for active material transport and erosion. Ontario Lacus li...
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