نتایج جستجو برای: water bodies

تعداد نتایج: 627025  

Journal: :Remote Sensing 2017
Céline Lamarche Maurizio Santoro Sophie Bontemps Raphaël d'Andrimont Julien Radoux Laura Giustarini Carsten Brockmann Jan Wevers Pierre Defourny Olivier Arino

Accurate maps of surface water extent are of paramount importance for water management, satellite data processing and climate modeling. Several maps of water bodies based on remote sensing data have been released during the last decade. Nonetheless, none has a truly (90◦N/90◦S) global coverage while being thoroughly validated. This paper describes a global, spatially-complete (void-free) and ac...

Journal: :Remote Sensing 2016
Luc Bertels Bruno Smets Davy Wolfs

Water body detection worldwide using spaceborne remote sensing is a challenging task. A global scale multi-temporal and multi-spectral image analysis method for water body detection was developed. The PROBA-V microsatellite has been fully operational since December 2013 and delivers daily near-global synthesis with a spatial resolution of 1 km and 333 m. The Red, Near-InfRared (NIR) and Short W...

2016
Fangfang Zhang Junsheng Li Qian Shen Bing Zhang Huping Ye Shenglei Wang Zhaoyi Lu

Surface water distribution extracted from remote sensing data has been used in water resource assessment, coastal management, and environmental change studies. Traditional manual methods for extracting water bodies cannot satisfy the requirements for mass processing of remote sensing data; therefore, accurate automated extraction of such water bodies has remained a challenge. The histogram bimo...

2013
Michael J. Wolovick Robin E. Bell Timothy T. Creyts Nicholas Frearson

[1] Subglacial water in continental Antarctica forms by melting of basal ice due to geothermal or frictional heating. Subglacial networks transport the water from melting areas and can facilitate sliding by the ice sheet over its bed. Subglacial water flow is driven mainly by gradients in overburden pressure and bed elevation. We identify small (median 850 m) water bodies within the Gamburtsev ...

2013
Cheng Gao Jun Liu Zhuowen Wang

Traditional flood control systems always have a conflict with natural ones, i.e., rivers in cities are usually straight and smooth, whereas natural ones are according to ecological mechanisms. Social and economic developments in the modern world require a new system combining ecological needs and traditional flood control system. Ecological flood control systems were put forward and defined as ...

Journal: :Environmental Health Perspectives 1979
I A Veldre A R Itra L P Paalme

Data on the content of benzo(a)pyrene (BP) in oil shale industry wastewater, the effectiveness of various effluent treatment processes (evaporation, extraction with butyl acetate, trickling filters, aeration tanks) in reducing the level of BP in oil shale wastewater, the level of BP in various bodies of water of Estonia, and in fish and other water organisms are reviewed. The quantitative deter...

Journal: :international journal of aquatic biology 0
amir hossein hamidian mansoureh hassanzadeh

eutrophication is known as the most common problem in water bodies, caused by high concentrations of different nutrients leading to unbalanced growth of aquatic plants, among other symptoms. hence, the possibility of eutrophication prediction can be beneficial to the sustainable management of these natural resources and create an opportunity to control their trophic conditions over time. a soft...

2014
Thomas F. Nalepa Don W. Schloesser

............................................................................................................................................................................... 623 Introduction .......................................................................................................................................................................... 624 Case Study Sites ...............

Journal: :Ecological Chemistry and Engineering S 2013

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