نتایج جستجو برای: beach erosion

تعداد نتایج: 38930  

Journal: :Coastal Engineering Proceedings 1970

Journal: :Coastal Engineering Proceedings 1978

Journal: :مطالعات باستان شناسی 0
حسین توفیقیان استادیار پژوهشکدۀ باستان شناسی، پژوهشگاه میراث فرهنگی و گردشگری

some researchers believe that because of the severe earthquake and tsunami in the fourth century h., a large part of siraf submerged by the persian gulf water fluctuations. based on the available evidence and also by the archaeological survey of the siraf coastal surrounding areas, the author argues that despite the devastating earthquake occurred to destroy much of the coastal architectural st...

2012
F. Javier

12 13 Coastal changes on sandy shorelines are continuous and occur at diverse spatial and 14 temporal scales. Gaining knowledge on beach change processes increases our capability 15 to manage risks affecting the increasing population living in coastal areas, especially 16 shoreline erosion. Processes and factors involved in mediumand short-term beach 17 changes depend on the morphological and d...

2016
Ian L Turner Mitchell D Harley Andrew D Short Joshua A Simmons Melissa A Bracs Matthew S Phillips Kristen D Splinter

Long-term observational datasets that record and quantify variability, changes and trends in beach morphology at sandy coastlines together with the accompanying wave climate are rare. A monthly beach profile survey program commenced in April 1976 at Narrabeen located on Sydney's Northern Beaches in southeast Australia is one of just a handful of sites worldwide where on-going and uninterrupted ...

2007
Amy M. Williams Rusty A. Feagin

Sargassum fluitans and natans, types of brown algae wash up on Galveston Island, Texas each year from May to August. Sargassum smells bad, hurts tourism and impairs sea turtle hatchings. Coastal managers are confronted with the difficult choice of cleaning Sargassum off the beach front or leaving it alone. The current beach management practice is to rake the algae with mechanical tractors and d...

2005
Christine Schleupner

Based on a spatial model, the Martinique beaches and coastal wetlands are examined to identify the risks of coastal squeeze. In many cases coastal development prevents coasts from adapting by shifting landward. Also tourism infrastructure augments the vulnerability of beach reduction and mangrove squeeze. More than 70% of all Martinique beaches and 29% of mangrove forests are highly endangered ...

Journal: :فیزیک زمین و فضا 0
همایون خوشروان دکتری تخصصی زمین شناسی، رئیس مرکز ملی مطالعات و تحقیقات دریای خزر، موسسه تحقیقات آب سمیه روحانی زاده کارشناس ارشد رسوب شناسی، کارشناس پژوهشی مرکز ملی مطالعات و تحقیقات دریای خزر جواد ملک کارشناس ارشد مهندسی عمران، مربی پژوهشی موسسه تحقیقات آب قاسم نژادقلی کارشناس ارشد فیزیک دریا، کارشناس پژوهشی مرکز ملی مطالعات و تحقیقات دریای خزر

in this research work the classification of the southern coasts of the caspian sea is performed using sedimentary and morphodynamic indices. this includes field study of morphodynamic characteristics of the shore structures. field measurements include in situ samplings of sediments and actual observations of structures on site. these field activities were done along six transects in the dry coa...

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