نتایج جستجو برای: iranian coastline

تعداد نتایج: 42704  

2017
Ying Fu Qiaozhen Guo Xiaoxu Wu Hui Fang Yingyang Pan

Coastline change reflects the dynamics of natural processes and human activity, and influences the ecology and environment of the coastal strip. This study researched the change in coastline and sea area of the Bohai Sea, China, over a 30-year period using Landsat TM and OLI remote sensing data. The total change in coastline length, sea area, and the centroid of the sea surface were quantified....

2011
D. K. Raju

Information on the pattern, rhythm and long-term trend of shoreline dynamics is vital to managing the coast, especially in mapping risk areas and in establishing the width of construction setback lines. Unfortunately, such data are often missing or where present of doubtful quality. In this paper, we share our experience in mapping coastline change in Singapore, using geographic information sys...

Journal: :environmental resources research 0
r safari gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran

kutum is considered as one of the anadramous species of the caspian sea. due to continuous population decline of the fish since 1975, iranian fisheries organization started to restock this species. nowadays, there is growing concern over the effects of restocking on natural populations. for this purpose, population structure and genetic variation of this species in the iranian coastline of casp...

Journal: :Remote Sensing 2014
Xiaoping Zhang Delu Pan Jianyu Chen Jianhua Zhao Qiankun Zhu Haiqing Huang

Continued sea-level rise and coastal development have led to considerable concerns on coastline changes along inhabited islands. Analysis of long-term coastline changes of islands is however limited due to unavailable data and the cost of field work. In this study, high-resolution images taken from 1970–2011 at an interval of about 10 years and topographic maps were collected to determine coast...

2008

Rising sea levels are of significant concern as global temperatures continue to mount. Predicted increases in sea level place coastal regions and cities in danger. This danger is far from uniform; many factors contribute to the relative infiltration of water and its consequent effect on land. Naive considerations of elevation alone would result in a poor model of what happens in real life. This...

2005
Hongxing Liu Kenneth C. Jezek

A complete, high-resolution coastline of Antarctica, extracted from an orthorectified mosaic of Radarsat-1 synthetic aperture radar (SAR) images through a sequence of automated image processing algorithms, is presented. A locally adaptive thresholding method is used to segment the orthorectified SAR images, while image-object formation and labeling, and edgetracing techniques are used to proces...

Journal: :caspian journal of enviromental sciences 0

considering the increasing rice consumption in the world and also the excessive application of pesticides to increase production, an experiment was conducted to determine the pesticide residues and their effects on nitrogen, potassium and phosphorus content of hashemi, khazar and gohar (sa13) rice cultivars, in a factorial design at randomized complete block design with three replications. in t...

Journal: :Geographical Review of Japan 1933

2005
Hongxing Liu Kenneth C. Jezek

A complete, high-resolution coastline of Antarctica, extracted from an orthorectified mosaic of Radarsat-1 synthetic aperture radar (SAR) images through a sequence of automated image processing algorithms, is presented. A locally adaptive thresholding method is used to segment the orthorectified SAR images, while image-object formation and labeling, and edgetracing techniques are used to proces...

Journal: :Journal of Multimedia 2013
Hannv Zhang Qigang Jiang Jiang Xu

In recent years, support vector machine (SVM) has been widely applied in remote sensing image classification, since its experience can also minimize errors and maximize the geometric characteristics of the edge area. In this article SVM classification algorithm will be introduced the remote sensing extraction coastline. Fujian Province Landsat7 ETM + image will be a test region to be classified...

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