Hossein Sahour

Hossein Sahour
University of Texas at Austin | UT

Doctor of Philosophy

About

25
Publications
6,345
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
261
Citations
Introduction
Hossein is a senior data scientist at NextNav and helps develop new generation 3D geolocation technology

Publications

Publications (25)
Article
Full-text available
Trend analysis of climate variables such as streamflow, precipitation, and temperature provides useful information for understanding the hydrological changes associated with climate change. In this study, a nonparametric Mann-Kendall test was employed to evaluate annual, seasonal, and monthly trends of precipitation and streamflow for the Neka basi...
Article
Full-text available
The Gravity Recovery and Climate Experiment (GRACE) has been successfully used to monitor variations in terrestrial water storage (GRACETWS) and groundwater storage (GRACEGWS) across the globe, yet such applications are hindered on local scales by the limited spatial resolution of GRACE data. Using the Lower Peninsula of Michigan as a test site, we...
Article
Urban and industrial wastewaters, and the weathering of rocks are the main anthropogenic and natural sources of heavy metals (HMs) in coastal worldwide environments. The present work examined the content, distribution, potential sources, and ecological risks of HM contamination in the coastal sediments of Suez Bay, Egypt. Six pollution and health r...
Article
Full-text available
Groundwater drawdown is typically measured using pumping tests and field experiments; however, the traditional methods are time-consuming and costly when applied to extensive areas. In this research, a methodology is introduced based on artificial neural network (ANN)s and field measurements in an alluvial aquifer in the north of Iran. First, the a...
Article
Full-text available
Rainfall-runoff modeling is necessary for many hydrological studies, such as estimating peak discharges and designing hydraulic structures. The intensity and frequency of extreme climatic events necessitate the use of advanced approaches that incorporate different climatic and landscape parameters for rainfall-runoff modeling. The majority of small...
Article
Full-text available
The Prairie Pothole Region (PPR) contains numerous depressional wetlands known as potholes that provide habitats for waterfowl and other wetland-dependent species. Mapping these wetlands is essential for identifying viable waterfowl habitat and conservation planning scenarios, yet it is a challenging task due to the small size of the potholes, and...
Article
Full-text available
Monitoring temporal variation of streamflow is necessary for many water resources management plans, yet, such practices are constrained by the absence or paucity of data in many rivers around the world. Using a permanent river in the north of Iran as a test site, a machine learning framework was proposed to model the streamflow data in the three pe...
Article
Assessment of water-induced soil erosion as a crucial part of soil conservation plans is costly and time-consuming when applied to an extensive area. In this study, we propose a methodology based on recording the annual soil erosion in a portion of the study area using erosion pins and assessing the spatial distribution of soil erosion for the enti...
Article
Monitoring changes in groundwater storage is necessary for water resource management plans. The temporal records of spring discharge are restricted by the absence or paucity in many parts of the world. To address this shortcoming, various models and methods have been implemented to reconstruct past hydrologic data. In this study, temporal variation...
Article
Full-text available
Temporal records of river flow as essential data for water resource management plans are not available in many rivers around the world. In this study, monthly discharges of the Taskoh river in the north of Iran were simulated using dendrohydrology (the earlywood vessels and tree- rings chronologies). For this purpose, cross-dating, standardization,...
Preprint
Full-text available
Monitoring temporal variation of streamflow is necessary for many water resources management plans, yet, such practices are constrained by the absence or paucity of data in many rivers around the world. Using a permanent river in the north of Iran as a test site, a machine learning framework was proposed to model the streamflow data in the three pe...
Article
Full-text available
Assessment of soil erosion is necessary for any long-term soil conservation plan, yet, the procedure is costly and time-consuming when applied to a large domain. Using a portion of the Alborz mountains in the north of Iran as a test site, a methodology was developed and tested based on a self-organizing map. First, annual soil erosion rates were me...
Article
Full-text available
Available water resources in the Middle East, as one of the most water-scarce regions of the world, have undergone extra pressure due to climatic change, population growth, and economic development during the past decades. The objective of this study is to detect the trends and quantify the changes in aridity with respect to precipitation and poten...
Article
Full-text available
The Miankaleh wetland, one of the richest ecosystems in the north of Iran, has experienced an unprecedented environmental degradation caused by overexploitation of the water resources and climatic changes in recent years. This research aims to estimate the environmental water requirement (EWR) for the rivers that drain into the wetland. For this pu...
Article
Assessment of soil erosion is crucial for any long-term soil conservation plan. Traditional in-situ measurements provide a precise amount of erosion rate; however, the procedure is costly and time-consuming when applied over an extensive area. This study aimed to investigate the use of erosion pins and artificial neural networks (ANNs) to assess th...
Article
Groundwater salinity in an aquifer system is typically measured through field studies (e.g., groundwater sampling, and direct current resistivity method). The field-based measurements are costly and time-consuming when they are applied over a large domain. In this study, a methodology was developed and evaluated based on available hydrogeology and...
Article
Full-text available
Identifying shallow (near-surface) groundwater in arid and hyper-arid areas has significant societal benefits, yet it is a costly operation when traditional methods (geophysics and drilling) are applied over large domains. In this study, we developed and successfully applied methodologies that rely heavily on readily available temporal, visible, an...
Article
Full-text available
Intensification of anthropogenic activities and related processes have altered the morphology of modern deltaic systems. As a result, mapping of geomorphic features, such as paleochannels, using recently acquired digital elevation data has become increasingly difficult. Using the Nile River and delta as a test site, we developed and applied procedu...
Poster
Full-text available
Analysis of temporal CSR monthly GRACE RL05/RL06 solutions and Sentinel-1 SAR data is underway over selected areas in the Lower Peninsula of Michigan (LP) to assess the distribution, nature, and factors causing observed land deformation in the Lower Peninsula (LP). The secular trends in GRACETWS and GRACEGWS revealed two general patterns across the...
Conference Paper
Full-text available
The Gravity Recovery and Climate Experiment (GRACE) has been successfully applied to monitor variation in terrestrial water storage (TWS) and ground water storage (GWS) in many parts of the world. Unfortunately, the applications of these methodologies locally are hampered by the poor spatial resolution of GRACE data. We used statistical approaches...
Conference Paper
The Gravity Recovery and Climate Experiment (GRACE) has been successfully used for the assessment of terrestrial water storage (TWS) and ground water storage (GWS) for hydrologic systems worldwide, yet such applications are hindered by the low spatial resolution inherited in GRACE data. To address this shortcoming, we applied stepwise multivariate...
Conference Paper
The Gravity Recovery and Climate Experiment (GRACE) has been successfully used to track changes in terrestrial water storage (TWS) and ground water storage (GWS) across the globe. We use GRACE RL05 monthly mascon solutions from the Center for Space Research (CSR) and outputs of the Global Land Data Assimilation Systems (GLDAS) to investigate/extrac...
Article
Full-text available
Evapotranspiration is one the most important parameters in the hydrological cycle and plays a significant role in energy balance of the earth's surface. Traditional field-based measurements approaches for calculation of daily evapo-transpiration are valid only for local scales. Using advanced remote sensing technology, the spatial distribution of e...
Article
Full-text available
Floods are amongst the most destructive natural hazards causing lots of economic damages and casualties. Advancements in Remote Sensing and computer sciences provide a great opportunity for researchers to implement flood prediction systems to mitigate devastating impacts of flood events. In the following research, total outflow, peak flow and time...

Network

Cited By

Projects

Projects (2)
Project
The objective of the study is to assess the land deformation velocities in the Lower Peninsula of Michigan using Persistent scatterer interferometry (PSI) analyses and conducting spatial and temporal correlation of the deformation velocities with relevant data sets (e.g., extraction of oil, gas, and groundwater).
Project
The aim of this project is first of all, assessment of the temporal and spatial changes in total water storage and ground water storage of the Michigan`s lower peninsula using GRACE satellite data and land surface models and identification of the controlling factors . Second, down-scaling the GRACE data for it`s application in local studies.