نتایج جستجو برای: beach sediment

تعداد نتایج: 45335  

2012
Jenyffer Vierheller Vieira Carlos Alberto Borzone Luciano Lorenzi Fabiano Grecco de Carvalho

Pollution, exploitation of resources, erosion and recreational activities produce the most common impacts that somehow alter the natural balance of beach ecosystems. The aim of this study was to compare the richness and abundance of the benthic macrofauna of two sectors, one non-urbanized and the other urbanized, on each of two morphodynamically different beaches. Sectors of each beach were ana...

2010
Paul D. Komar

KOMAR, P.D., 2010. Shoreline evolution and management of Hawke’s Bay, New Zealand: tectonics, coastal processes, and human impacts. Journal of Coastal Research, 26(1), 143–156. West Palm Beach (Florida), ISSN 0749-0208. The evolution of the coast of Hawke’s Bay, New Zealand, and its erosion problems have been governed by multiple factors, including its tectonic setting with an earthquake in 193...

Journal: :Coastal Engineering Proceedings 2011

Journal: :Coastal Engineering Proceedings 1982

2013
Alejandro Sánchez Weiming Wu

SANCHEZ, A. and WU, W., 2011. A Non-Equilibrium Sediment Transport Model for Coastal Inlets and Navigation Channels. In: Roberts, T.M., Rosati, J.D., and Wang, P., (eds.), Proceedings, Symposium to Honor Dr. Nicholas C. Kraus, Journal of Coastal Research, Special Issue, No. 59, pp. 39-48. West Palm Beach (Florida), ISSN 0749-0208. This paper presents a depth-averaged sediment transport model wi...

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...

Journal: :FEMS microbiology ecology 2011
Gregory J Imamura Rachelle S Thompson Alexandria B Boehm Jennifer A Jay

Algae on freshwater beaches can serve as reservoirs for fecal indicator bacteria (FIB). Wrack (especially kelp) at marine beaches might sustain FIB as well. This study examines the relationship between beach wrack, FIB, and surrounding water and sediment at marine beaches along the California coast. Surveys of southern and central California beaches were conducted to observe environmental wrack...

2008
Ping Wang Nicholas C. Kraus

WANG, P. and KRAUS, N.C., 2005. Beach profile equilibrium and patterns of wave decay and energy dissipation across the surf zone elucidated in a large-scale laboratory experiment. Journal of Coastal Research, 21(3), 522–534. West Palm Beach (Florida), ISSN 0749-0208. The widely accepted assumption that the equilibrium beach profile in the surf zone corresponds with uniform waveenergy dissipatio...

2015
Xia Ding Xiao-Jue Peng Bin-Song Jin Ming Xiao Jia-Kuan Chen Bo Li Chang-Ming Fang Ming Nie

The spatial distributions of bacterial communities may be driven by multiple environmental factors. Thus, understanding the relationships between bacterial distribution and environmental factors is critical for understanding wetland stability and the functioning of freshwater lakes. However, little research on the bacterial communities in deep sediment layers exists. In this study, thirty clone...

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