Search Results - "Hamzehpour, Nikou"

Measurement report: The Urmia playa as a source of airborne dust and ice-nucleating particles – Part 1: Correlation between soils and airborne samples by Hamzehpour, Nikou, Marcolli, Claudia, Pashai, Sara, Klumpp, Kristian, Peter, Thomas

“…The emergence of desiccated lake bed sediments and their exposure to wind erosion as a consequence of climate change and drought in arid and semiarid regions…”
Get full text

Assessment of soil salinity using explainable machine learning methods and Landsat 8 images by Aksoy, Samet, Sertel, Elif, Roscher, Ribana, Tanik, Aysegul, Hamzehpour, Nikou

“…•ML based Soil salinity estimations were explained using Shapley additive explanations.•Landsat 8 images derived features’ importance for soil salinity were…”
Get full text

The Urmia playa as a source of airborne dust and ice-nucleating particles – Part 2: Unraveling the relationship between soil dust composition and ice nucleation activity by Hamzehpour, Nikou, Marcolli, Claudia, Klumpp, Kristian, Thöny, Debora, Peter, Thomas

“…Ice-nucleating particles (INPs) originating from deserts, semi-arid regions, and dried lakebeds may cause heterogeneous ice nucleation, impacting cloud…”
Get full text

Geomorphic surfaces of eastern lake Urmia Playa and their influence on dust storms by Mais Alkhayer, Mostafa Karimian Eghbal, Nikou Hamzehpour

“…Lake Urmia is one of the most important salt lakes in the world and the largest in Iran. At present, because of the recession of Lake Urmia and deposition of…”
Get full text

Investigation of soil salinity to distinguish boundary line between saline and agricultural lands in Bonab Plain, southeast Urmia Lake, Iran by Nikou Hamzehpour, Mehdi Rahmati

“…Gradual drying of Urmia Lake has left vast saline areas all around it, increasing the risk of salinization of agricultural lands next to the Lake. The current…”
Get full text

Ultrasound-assisted emulsification-microextraction coupled to ion mobility spectrometry for monitoring of atrazine and simazine in environmental water by Kalhor, Mohammad, Hamzehpour, Nikou, Ghashghaei, Erfan, Faridi, Mohammad, Kalhor, Hamideh

“…Triazine herbicides and some of their transformation products are considered as one of the most important classes of chemical pollutants owing to their…”
Get full text

Soil crust development on playa surfaces of Lake Urmia and its controlling factors: New insights to combat dust sources by Hamzehpour, Nikou, Marcolli, Claudia

“…[Display omitted] •Soil crusts from difference Lake Urmia playa surfaces are investigated.•Clay flats and clay flats-salt crusts have the most stable…”
Get full text

Exploring the driving forces and digital mapping of soil organic carbon using remote sensing and soil texture by Hamzehpour, Nikou, Shafizadeh-Moghadam, Hossein, Valavi, Roozbeh

“…The main objectives of this paper were 1) to estimate soil organic carbon (SOC) using remote sensing covariates, soil properties, and topographic factors , and…”
Get full text

Improved spatiotemporal monitoring of soil salinity using filtered kriging with measurement errors: An application to the West Urmia Lake, Iran by Hamzehpour, Nikou, Bogaert, Patrick

“…Real-time monitoring of soil salinity based on field samples and laboratory analyses is a costly and time demanding procedure, so that sound methods that could…”
Get full text

Soil salinity analysis of Urmia Lake Basin using Landsat-8 OLI and Sentinel-2A based spectral indices and electrical conductivity measurements by Gorji, Taha, Yildirim, Aylin, Hamzehpour, Nikou, Tanik, Aysegul, Sertel, Elif

“…•Saline deposits with poor quality irrigation water worsened soil salinization.•Salinity indices derived from visible bands provided satisfactory…”
Get full text

Quantitative remote sensing of soil electrical conductivity using ETM+ and ground measured data by Rahmati, Mehdi, Hamzehpour, Nikou

“…In this article, the possibility of predicting soil electrical conductivity (EC) from the enhanced thematic mapper plus (ETM+) data is studied using the…”
Get full text

Model averaging of machine learning algorithms for digital soil mapping: A minimum variance framework by Bogaert, Patrick, Taghizadeh-Mehrjardi, Ruhollah, Hamzehpour, Nikou

“…In the digital soil mapping framework, machine learning (ML) algorithms are currently the most popular methods for the spatial prediction of soil properties…”
Get full text

Improving spatial prediction of soil organic matter using soil auxiliary data as secondary information by Nikou Hamzehpour, Fereshte Motaghi

“…The aim of this research was to predict soil organic matter (SOM) using kriging and cokriging methods using soil auxiliary data. Soil samples were gathered…”
Get full text

The use of magnesium-enriched brine for stabilization of highly erodible playa surfaces: A comparative study with sodium alginate and sodium silicate by Alkhayer, Mais, Hamzehpour, Nikou, Eghbal, Mostafa Karimian, Rahnemaie, Rasoul

“…Newly formed playas, such as those resulting from the desiccation of Lake Urmia (LU) in northwest Iran, are significant global dust sources with implications…”
Get full text

Enhancing the accuracy of machine learning models using the super learner technique in digital soil mapping by Taghizadeh-Mehrjardi, Ruhollah, Hamzehpour, Nikou, Hassanzadeh, Maryam, Heung, Brandon, Ghebleh Goydaragh, Maryam, Schmidt, Karsten, Scholten, Thomas

“…•The super learner is promising approach for Digital Soil Mapping.•Super learner increased accuracy by up to ~46%, compared to base learners.•Permutation…”
Get full text

Assessing the performance of machine learning algorithms for soil salinity mapping in Google Earth Engine platform using Sentinel-2A and Landsat-8 OLI data by Aksoy, Samet, Yildirim, Aylin, Gorji, Taha, Hamzehpour, Nikou, Tanik, Aysegul, Sertel, Elif

“…•Earth Engine platform facilitated the analysis of multi-sensor data for soil salinity mapping.•Landsat- 8 and Sentinel-2A derived soil salinity maps were…”
Get full text

Sand sheets—the major dust source in the western Lake Urmia playa—A comprehensive study of the soil-dust properties and stabilization by Hamzehpour, Nikou, Mahdavinia, Gholam Reza, Rahmati, Mehdi

“…Climate change accelerated by anthropogenic activities has led to the shrinkage and eventually disappearance of salt lakes all over the world. Gradual…”
Get full text

The wind erodibility in the newly emerged surfaces of Urmia Playa Lake and adjacent agricultural lands and its determining factors by Alizadeh Motaghi, Fereshteh, Hamzehpour, Nikou, Mola Ali Abasiyan, Sara, Rahmati, Mehdi

“…•Several playa surfaces have developed on geomorphic surfaces of Urmia Playa Lake.•Erodible fraction varied between 40% and 90% among playa surfaces.•Playa…”
Get full text

Brine geochemical changes and salt crust evolution of Lake Urmia in Iran by Alkhayer, Mais, Karimian Eghbal, Mostafa, Hamzehpour, Nikou, rahnemaie, Rasoul

“…•Lake Urmia brine and SC investigated under natural condition and lab simulation.•NaCl was the dominant mineral along with MgCl2 and Na-K-SO4 in the natural…”
Get full text

Pedogenic evidence of Urmia Lake's maximum expansion in the late Quaternary by Hamzehpour, Nikou, Eghbal, Mostafa Karimian, Abasiyan, Sara Mola Ali, Dill, Harald G.

“…The Urmia Lake recession, and the resulting increase in vast barren area around it, has been rapid in recent decades and thus has attracted attention of…”
Get full text