Showing 2,221 - 2,240 results of 2,648 for search '"satellites"', query time: 0.07s Refine Results
  1. 2221

    Investigation of morphology changes in Karun River and its hazards (Case Study: Bandagir to Khorramshahr) by Amir Saffati, EzatAllah ghanavati, Hamid Alipour Dezdouli Asl

    Published 2023-03-01
    “…In this study, with the aim of investigating these changes with satellite imagery, Landsat images for 1990, 2005 and 2018 were prepared and morphological changes were extracted after required processing. …”
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  2. 2222

    Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa by Lerato Shikwambana, Venkataraman Sivakumar

    Published 2016-01-01
    “…Cloud-Aerosol LIDAR and Infrared Pathfinder Satellite Observations (CALIPSO) revealed high level clouds while the CSIR LIDAR could not. …”
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  3. 2223

    CLIMATIC PATTERN ANALYSIS OF RAINFALL AND DRY SPELLS DURING THE AGRICULTURAL SEASON IN MALAWI by Medrina Linda Mloza Banda, Wim Cornelis, Henry R. Mloza Banda

    Published 2024-08-01
    “…The study identified the basic structural characteristics of dry spells, seasonal, and extreme rainfall events to offer localized information which in data-scarce regions is typically extrapolated from syntheses of regional or satellite climate data. Utilizing observed daily station rainfall datasets from the rainy season (November to April) spanning the years 1961 to 2007, a set of indices including percentile, absolute, threshold, and duration measures, was derived for locations at low (Balaka), medium (Bunda, Chitedze, KIA), and high (Dedza) altitudes in Malawi. …”
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  4. 2224

    REFINED ESTIMATES OF DIRECT PYROGENIC CARBON EMISSIONS IN RUSSIAN FORESTS BASED ON REMOTE MONITORING DATA FROM 2011 TO 2023 by D. V. Ershov, E. N. Sochilova, K. A. Kovganko

    Published 2024-12-01
    “…The paper presents refined estimates of direct carbon emissions from forest fires in Russia based on satellite data for the period from 2011 to 2023. The main differences from the estimates in previous our publications are the use of a new version of annually updated products of pre-fire forest combustible fuels (FCF), which include new data on the reserves of FCF in the upper tree canopy, undergrowth, living ground vegetation cover and wood debris. …”
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  5. 2225

    Urban growth dynamics and its influence on land surface temperature in Bhubaneswar metropolitan city: a 1990–2021 analysis by Monashree Panigrahi, Arabinda Sharma

    Published 2025-02-01
    “…Abstract This study investigates the impact of urbanization on land use and land cover (LULC) changes and their consequent effects on land surface temperature (LST) in Bhubaneswar, India, over a 30-year period from 1990 to 2021. It uses Landsat satellite imagery from Thematic Mapper (TM) and Operational Land Imager (OLI) sensors, along with correlation analysis, to assess the spatial and temporal dynamics of LULC and their influence on LST. …”
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  6. 2226

    The Etruscans and the Mediterranean : The City of Cerveteri by Jaimee Uhlenbrock

    Published 2014-06-01
    “…This is the third major exhibition organized by the Musée du Louvre this past year for its satellite museum at Lens in north-eastern France that opened a little more than a year ago, in December 2012. …”
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  7. 2227

    Influence of amplitude and phase imbalance of quadratures on the noise immunity of coherent reception of signals with quadrature amplitude modulation by G. V. Kulikov, A. A. Lelyukh

    Published 2021-03-01
    “…Quadrature amplitude modulation (QAM) is used for high-speed information transmission in many radio systems and, in particular, in DVB-S and DVB-S2/S2X digital satellite television systems. A receiver included as a part of the transmitting equipment of such systems has a block for the formation of quadrature oscillations used as a reference for signal demodulation. …”
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  8. 2228

    The effect of urban sprawl in emerging of transportation flows and urban air pollution in Tehran metropolitan region

    Published 2019-03-01
    “…For analysis of suburban spatial transportation have used Raw Data Intra-Urban and suburban Data in 1395 Year And for spatial analysis of air pollution (PM2.5 and PM10), have been used The raw data from sensing stations and Landsat satellite images (OLI) for three selected days in 1392, 1393, and 1395 as survey samples in the ArcGIS software. …”
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  9. 2229

    Aerosol Modulation of Ultraviolet Radiation Dose over Four Metro Cities in India by A. S. Panicker, G. Pandithurai, G. Beig, Dongchul Kim, Dong-In Lee

    Published 2014-01-01
    “…Tropospheric Emission Monitoring Internet Service (TEMIS), archived UV-index (UV-I), and UV daily erythemal dose obtained from SCIAMACHY satellite were used in this study during June 2004 and May 2005 periods covering four important Indian seasons. …”
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  10. 2230

    Land Use/Land Cover Change and Its Driving Forces in Shenkolla Watershed, South Central Ethiopia by Belayneh Bufebo, Eyasu Elias

    Published 2021-01-01
    “…Unsupervised and supervised classification techniques were employed to get thematic information from satellite imagery. ArcGIS 10.3 and QGIS v 3.0 softwares were used to accomplish the analysis. …”
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  11. 2231

    Modeling Impact of Land Use Dynamics on Hydrology and Sedimentation of Megech Dam Watershed, Ethiopia by Abebe Tarko Assfaw

    Published 2020-01-01
    “…The overall analysis was performed by using 1998 historical and 2016 recent land use satellite images. The analysis has shown that the cultivated land has increased from 60.69% to 67.17% and urban land from 2.3% to 3.36% between 1998 and 2016. …”
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  12. 2232

    The consequences of changes in forest land cover in the Alpine and Jurassic massifs on the physico-chemical status of deep lake waters by Van Tuan Nghiem, Rachid Nedjai, Nacer Nasreddine Messaoud

    Published 2012-02-01
    “…This work focuses on an analysis of land cover (vegetation), using four satellite images spanning the period from 1975 to 2006, and calls on hydrogeochemical modelling (WARMF) to evaluate changes in the physico-chemical quality, i.e. acidification, of deep lake waters. …”
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  13. 2233
  14. 2234

    Models for plasmasphere and plasmatrough density and average ion mass including dependence on L, MLT, geomagnetic activity, and phase of the solar cycle by Richard E. Denton, Kazue Takahashi, David P. Hartley

    Published 2025-01-01
    “…Using observations of mass density inferred from standing Alfvén wave frequencies and electron density inferred from plasma wave frequencies, predominantly for the Combined Release and Radiation Effects Satellite (CRRES) and Van Allen Probes spacecraft, we used symbolic nonlinear regression to find analytical formulas for the equatorial electron density, ne, mass density, ρm, and average ion mass, M≡ρm/ne. …”
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  15. 2235

    72‐Hour Time Series Forecasting of Hourly Relativistic Electron Fluxes at Geostationary Orbit by Deep Learning by Jihyeon Son, Yong‐Jae Moon, Seungheon Shin

    Published 2022-10-01
    “…We use electron flux data from Geostationary Operational Environmental Satellite (GOES)‐15 and ‐16, and perform a mapping for matching these two data. …”
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  16. 2236

    Science Through Machine Learning: Quantification of Post‐Storm Thermospheric Cooling by Richard J. Licata, Piyush M. Mehta, Daniel R. Weimer, Douglas P. Drob, W. Kent Tobiska, Jean Yoshii

    Published 2022-09-01
    “…In this work, we develop ML models on three data sets: the Space Environment Technologies High Accuracy Satellite Drag Model (HASDM) density database, a spatiotemporally matched data set of outputs from the Jacchia‐Bowman 2008 Empirical Thermospheric Density Model (JB2008), and an accelerometer‐derived density data set from CHAllenging Minisatellite Payload (CHAMP). …”
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  17. 2237

    Statistical Analysis of Medium‐Scale Traveling Ionospheric Disturbances Over Japan Based on Deep Learning Instance Segmentation by Peng Liu, Tatsuhiro Yokoyama, Weizheng Fu, Mamoru Yamamoto

    Published 2022-07-01
    “…Abstract Medium‐scale traveling ionospheric disturbances (MSTIDs) are observed as parallelly arrayed wavelike perturbations of Total Electron Content (TEC) in ionospheric F region leading to satellite navigation error and communication signal scintillation. …”
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  18. 2238

    Evaluating the accuracy of hyperspectral and multispectral images in wetland cover classification using data mining models (Case study: Shadegan wetland) by Hamid Bagheri, Rahime Rostami

    Published 2024-09-01
    “…Due to the spectral similarity between different plant species of wetlands and plants along the wetlands and agricultural lands, this is faced with problems using multispectral data and hyperspectral data can be very useful in this regard. in this study power of hyperspectral and multispectral sensors in identifying the characteristics of the wetland and the ability of ETM + (2011), Hyperion (2011) and ALI (2011) sensors to study the characteristics of Shadegan wetland during 1390 and different spectral indices with a suitable combination of The satellite imagery bands of these sensors were compared as input to a variety of classification methods including maximum likelihood, minimum distance, neural network and support vector machine. …”
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  19. 2239

    Rarefied Nozzle Flow Computation Using the Viscosity-Based Direct Simulation Monte Carlo Method by Deepa Raj Mopuru, Nishanth Dongari, Srihari Payyavula

    Published 2024-12-01
    “…Micro-nozzles are essential for enabling precise satellite attitude control and orbital maneuvers. Accurate prediction of performance parameters, including thrust and specific impulse, is critical, necessitating careful design of these nozzles. …”
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  20. 2240

    Solar Wind Speed Prediction via Graph Attention Network by Yanru Sun, Zongxia Xie, Haocheng Wang, Xin Huang, Qinghua Hu

    Published 2022-07-01
    “…Specifically, we combine the OMNI data measured at Lagrangian Point 1 (L1) with the extreme ultraviolet images observed by the Solar Dynamics Observatory satellite to predict the solar wind speed at L1. Compared with the baseline models, GTA obtains significant performance improvements. …”
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