نتایج جستجو برای: in sea surface maps

تعداد نتایج: 17156045  

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Dust storms are one of damaging climatic phenomena on the synoptic maps that are affected from the elements of pressure, cloudiness, precipitation, relative humidity, wind, temperature, and evaporation. According to Kermanshah province is one of the areas that is affected by the storms, the aim of this study is synoptic analysis of extreme dust storms in Kermanshah Station in 54-year period (19...

Small pelagic fishes particularly anchovy (Encrasicholina punctifer) and sardine (Sardinella sindensis) have an important role to support the Iranian fisheries, and are distributed along the entire length of the Persian Gulf and Oman Sea coastal waters. Using small pelagic fisheries logbook, a GIS-based environmental modelling approach was applied to investigate the presence and abundance of an...

Journal: :نشریه دانشکده فنی 0
مهدی حسنلو دانشگاه تهران محمدرضا سراجیان دانشگاه تهران

oceanographic images obtained from environmental satellites by a wide range of sensors allow characterizing natural phenomena through different physical measurements. for instance sea surface temperature (sst) images, altimetry data and ocean color data can be used for characterizing currents and vortex structures in the ocean. the purpose of this thesis is to derive a relatively complete frame...

Journal: :Remote Sensing 2017
Andrew J. Kammerer Erin E. Hackett

Radar remote sensing of the sea surface for the extraction of ocean surface wave fields requires separating wave and non-wave contributions to the sea surface measurement. Conventional methods of extracting wave information from radar measurements of the sea surface rely on filtering the wavenumber-frequency spectrum using the linear dispersion relationship for ocean surface waves. However, thi...

Journal: :فیزیک زمین و فضا 0
عبدالرحیم عسکری وحید ابراهیم زاده اردستانی علیرضا آزموده اردلان

changing altimetry information from satellites on the surface of seas and oceans, into anomaly gravity for example free air anomaly, is a fundamentally new method presented by researches. the determination of the free air gravity anomaly over the earth’s marine regions has led to a major improvement in our understanding of plate tectonic processes relating to oceanic ridges, the formation of ma...

2004
C. Gabarró J. Font A. Camps A. Julià

[1] SMOS (Soil Moisture and Ocean Salinity) is a European Space Agency mission that aims at generating global ocean salinity maps with an accuracy of 0.1 psu, at spatial and temporal resolution suitable for climatic studies. The satellite sensor is an L-band (1400–1427 MHz) aperture synthesis interferometric radiometer. Sea surface salinity (SSS) can be retrieved since the brightness temperatur...

Journal: :Earth System Science Data 2021

Abstract. We present a new Arctic sea level anomaly dataset based on the combination of three altimeter missions using an optimal interpolation scheme. Measurements from SARAL/AltiKa, CryoSat-2 and Sentinel-3A are blended together, providing unprecedented resolution for this type product. Such high-resolution products necessary to tackle some contemporaneous science questions in basin. use adap...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1392

a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...

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