نتایج جستجو برای: beach slope
تعداد نتایج: 61841 فیلتر نتایج به سال:
Recent studies of beach sand fecal contamination have triggered interest among scientists and in the media. Although evidence shows that beach sand can harbor high concentrations of fecal indicator organisms, as well as fecal pathogens, illness risk associated with beach sand contact is not well understood. Beach visitors at 7 US beaches were enrolled in the National Epidemiological and Environ...
Enterococci are used to evaluate the safety of beach waters and studies have identified beach sands as a source of these bacteria. In order to study and quantify the release of microbes from beach sediments, flow column systems were built to evaluate flow of pore water out of beach sediments. Results show a peak in enterococci (average of 10% of the total microbes in core) released from the san...
Variations in Ice Rafted Detritus on Beaches in the South Shetland Islands: A Possible Climate Proxy
Raised beach ridges on Livingston Island of the South Shetland Islands display variations in both quantity and source of ice rafted detritus (IRD) received over time. Whereas the modern beach exhibits little IRD, all of which is of local origin, the next highest beach (~250 14C yr BP) has large amounts, some of which comes from as far away as the Antarctic Peninsula. Significant quantities of I...
Arthroscopic shoulder surgery can be performed in both the beach chair and lateral decubitus positions. The beach chair position is a reliable, safe, and effective position to perform nearly all types of shoulder arthroscopic procedures. The advantages of the beach chair position include the ease of setup, limited brachial plexus stress, increased glenohumeral and subacromial visualization, ane...
This paper assesses the behaviour of international and domestic students on beaches in Queensland, Australia and their knowledge of beach safety practices. The data for the research was collected from Surf Life Saving Queensland lifeguards/savers, using a focus group interview and questionnaire survey distributed to a convenience sample of students from The University of Queensland. The results...
AIMS Research into the relationship between pathogens, faecal indicator microbes and environmental factors in beach sand has been limited, yet vital to the understanding of the microbial relationship between sand and the water column and to the improvement of criteria for better human health protection at beaches. The objectives of this study were to evaluate the presence and distribution of pa...
Beach seine gear is one of the prominent fishing gears in Nile Perch fishery. Before Nile Perch was introduced to the lake, beach seines the species targeted with beach seine were Tilapia, Bagrus, Haplochromis, Protopterus and Labeo. In 1994, beach seines were banned in Tanzania and by 2004, this particular regulation and others, were harmonized and applied to the entire Lake as a result of imp...
Broad sandy beaches and extensive dune ridges dominate the Dutch coastal zone. The beach areas are subject to continuous processes as beach erosion and sedimentation, which influence its morphology. This in turn has an economic impact on beach management and public security. Beach nourishments are carried out if safety of the land is at risk. Here the problems are defined as: (1) how to localiz...
Over the past decades, hydraulic surge generated by dam-break waves has been used to simulate effects of tsunamis on coastal infrastructure. This study investigates slope hydrodynamic loading structure when propagating over four different inclined beds (0-, 5-, 10-, 15-degree) experiment and numerical simulation using OpenFOAM DualSPHysics. Except for small discrepancies in pressure time-histor...
At coasts, sandy beach-dune systems act as natural barriers to environmental forcing, preventing coastal flooding and protecting communities. In the context of studies, it is fundamental identify sectors exposed wave impact support management suggest soft engineering interventions. This work examines morphodynamics Mira system on northern-central littoral Portugal over winter 2016-2017. Couplin...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید