Modeling Earth Systems and Environment

https://link.springer.com/journal/40808

List of Papers (Total 268)

Modeling of hotspot detection using cluster outlier analysis and Getis-Ord Gi* statistic of educational development in upper-primary level, India

In recent years educational variability has threatened the sustainability of elementary level in Indian educational system. Systematic methodology to assess the educational development of the elementary sector to educational variability is currently not available. Towards this end, the present paper pays attention with the assessment of spatial structure of Indian educational...

A geo-spatial study on spatio-temporal growth of brackish water aquaculture along the coastal areas of West Bengal (India)

The present study seeks to identify the landuse changes occurring due to haphazard growth of brackish water fisheries along the coastal areas of West Bengal through remote sensing and GIS techniques. High resolution multi-temporal Google Earth images were used for detecting spatio-temporal changes of two blocks of Contai sub-division located in Midnapore district of West Bengal...

Momentum flux and energy flux associated with internal gravity waves excited by the Assam-Burma hills in India

In this paper an attempt has been made to parameterize the momentum flux and energy flux associated with internal gravity waves excited by the Assam-Burma hills in India in a baroclinic mean flow. For that a linear dynamical model for air flow across a three-dimensional meso-scale elliptical barrier has been used. In the present study ABH has been approximated by two 3-D...

Photosynthesis rate, salinity induced grazing rate and gestation delay as determinants of the dynamics of a realistic food chain model: a stochastic approach

Impact of photosynthesis rate of phytoplankton, salinity induced grazing rate of zooplankton and gestation delay of zooplankton and fish population are considered in the present study. Models with delay are much more realistic, as in reality time delays occur in almost every biological situation and assume to be one of the reasons of regular fluctuations in population density...

Bank vulnerability and avulsion modeling of the Bhagirathi-Hugli river between Ajay and Jalangi confluences in lower Ganga Plain, India

The emergence of the study of fluvial dynamics of the alluvial monsoon rivers especially in India is being enriched through the application of remote sensing and GIS techniques. To study fluvial dynamics over time, channel avulsion no doubt is one of the most considerable phenomena. The study section (~75 km) in between the two confluences of the Bhagirathi River i.e., Ajay...

Development of a groundwater flow model for the highly parameterized Qatar aquifers

Groundwater models are powerful tools for water resources management, assessment and protection. The main challenge facing model development is the calibration process, especially in large models with a high number of calibrated parameters. Qatar aquifers comprise karst limestone with lots of cavities, sinkholes and underground channels. Therefore, the aquifer is highly...

Analysis of short-term shoreline oscillations along Midnapur-Balasore Coast, Bay of Bengal, India: a study based on geospatial technology

Shoreline is one of the quickly fluctuating linear landscapes of the coastal zone which is active in nature. In the present study, the analysis of remote sensing data sets covering Midnapur-Balasore coast, with an average time span of 6 months, has shown that they can be used to evaluate the short-term shoreline oscillations. In the present study, multi temporal satellite images...

Future changes in maximum temperature using the statistical downscaling model (SDSM) at selected stations of Iran

In the 21st century, climate change in the dry lands is considerate to be one of the greatest environmental threats to the world. This study presents the projection of future changes in maximum temperatures under A2, A1B and B1 SRES of the CGCM3 outputs using the statistical downscaling model (SDSM) in the 7 selected station over Iran during the two future periods (2041–70 and...

Discussion on fuzzy quota harvesting model in fuzzy environment: fuzzy differential equation approach

In the recent years much importance has been laid on the role of uncertainty (fuzzy, interval etc.) in mathematical biology. In this paper we tried to study on the quota harvesting model in fuzzy environment. This model is considered in three different ways viz. (1) Initial condition (population density) is a fuzzy number, (2) coefficients of quota harvesting model (intrinsic...

Numerical simulation of urban heat island intensity under urban–suburban surface and reference site in Kolkata, India

Urban heat island intensity (UHII) in Kolkata has been assessed using simplified numerical model for vertical temperature measurement in tropical monsoon summer month (June, 2015) during pre-onset of monsoon season. The data of 25 field observation sites show that the surface temperature curves are likely to mathematical trapeziums, and surface temperatures are related to...

Spatial database modeling for mangrove forests mapping; example of two estuarine systems in Brazil

This work considers mangrove cover changes in two subtropical estuaries in the southeastern coast of Brazil: Cananéia-Iguape Coastal System and Santos Estuarine System. A sequence of Landsat images from 1985 to 2014 from both areas was segmented, classified and analyzed in order to develop a systematic GIS approach for identifying and characterizing mangrove fragments in such...

GIS based beach sand budget analysis through seasonal beach profiling using cartographic techniques

Seasonal morphological variations and effect of oceanographic processes such as erosion or accretion along beaches are important aspects to understand the sand budget. The nature of the beach and their seasonal cyclic changes are probable reasons of seasonal morphological variations. The primary objective of the present study is to estimate coastal beach sand budget using...

Quantitative study on shoreline changes and Erosion Hazard assessment: case study in Muriganga–Saptamukhi interfluve, Sundarban, India

Quantitative techniques, statistical methods and mathematical rules make the geospatial analysis more systematic, accurate and precise. In order to measure the intensity of the ongoing processes on the earth surface, evaluate the spatio—temporal changes in geographical attributes, highlight the principal factors for any geographic events and to identify the future possibilities...

Modelling effect of toxicant in a three-species food-chain system incorporating delay in toxicant uptake process by prey

In this paper, a mathematical model is proposed and analyzed to study the effect of toxicant in a three-species food-chain system incorporating delay in toxicant uptake process by prey population. The model is formulated by using the system of non linear ordinary differential equations. In the model, it is assumed that the growth rate of prey population is affected by organismal...

An epidemic model of childhood disease dynamics with maturation delay and latent period of infection

In the present study, an epidemic model is proposed with maturation delay and latent period of infection, keeping in view the childhood disease dynamics and studied the asymptotic behavior of the model for all the feasible equilibrium states. The criterion for local stability of the system around steady states are established in terms of delay, latent period and system parameters...

WRF model sensitivity for simulating intense western disturbances over North West India

During winter season, large amount of precipitation is received in the Northwestern part of India due to eastward moving low pressure synoptic weather systems called western disturbances (WDs). These WD’s disturbs the life in Northern India with heavy precipitation, cold wave and fog. The objective of the present study is to examine model sensitivity of different physical...

Assessing spatial variations of groundwater arsenic with surface elevation, slope and water-table using geospatial techniques in Ballia district, India

The present study describes spatial variation of arsenic (As) in groundwater with respect to surface elevation and slope using SRTM data. In total, 34 water samples were collected from shallow aquifers covering all 17 blocks of Ballia district in the pre and post-monsoon season during 2011. Atomic absorption spectrophotometer (AAS) was used for arsenic testing. Inverse Distance...

The variability of particle backscattering coefficient in an oligo-to-hypertrophic cascading reservoir system: implications to TSM bio-optical model development

The particle backscattering coefficient (b bp ) has been obtained either by equipment or semi-analytically based on relations between b bp and the remote sensing reflectance (R rs ). Correlation between b bp and R rs can be significantly high allowing the development of bio-optical model to estimate the total suspended matter concentration [TSM] on water surface from satellite...

Investigation of inversion characteristics in atmospheric boundary layer: a case study of Tehran, Iran

Atmospheric stability originated from temperature inversion is a main challenge in the metropolitan areas especially during the cold seasons. This study aims to investigate temperature inversion characteristics of atmospheric boundary layer in Tehran within 2010–2014. Some parameters such as height, layer thickness, air pressure and temperature difference between base and top of...

Spatial and temporal variations of the inherent optical properties in a tropical cascading reservoir system

In order to verify the effect of a cascade system in the water quality of two tropical reservoirs in Brazil, this work proposed to make use of the inherent optical properties (IOPs) as well as the specific inherent optical properties (SIOPs). From upstream to downstream, Barra Bonita (BB) is the first in a set of six reservoirs along Tietê River and Nova Avanhandava (Nav) is the...

Landslide vulnerability mapping (LVM) using weighted linear combination (WLC) model through remote sensing and GIS techniques

Weighted linear combination (WLC) method was used to assess landslides vulnerability of the Simbu Province, Papua New Guinea within the GIS environment of ArcGIS. This multi-criteria evaluation method allows flexibility and tradeoffs amongst all parameters used. Ranks and weights are assigned depending on their influence on the occurrence of landslides. Parameters selected for...

An investigation into the particle volume scattering function variability in a cascading reservoir system

This work analyzed the spectral and spatial distribution of the particle volume scattering function, βp, in a cascading reservoir system. During fieldworks water quality parameters and scattering data were sampled in a predetermined stations. The βp was estimated using the ECO-BB9 equipment that measures the volume scattering function, β at 117° [β(117°)]. The estimated βp(117...

Using Monte Carlo simulation to estimate natural groundwater recharge in Qatar

Rainfall is the only source of groundwater recharge in arid countries, where no surface water exists. Quantification of the total volume of rainfall recharge is essential for water resources management, development and protection, but it is challenging. Numerous recharge estimation methods can be found in the literature, but the selection of the most appropriate one depends on...

Simulation and analysis of temporal changes of groundwater depth using time series modeling

In the world’s water scarce regions, groundwater as an important and strategic resource needs proper assessment. An accurate forecasting needs to be performed in order to make a better identification of fluctuating nature of groundwater levels. In this study, groundwater level fluctuations of Kabudarahang aquifer was synchronized and verified. Investigation was conducted with...

Mapping the impact of air travelers on the pandemic spread of (H1N1) influenza

GIS was used for visualization and exploratory spatial analysis to provide insight into the outbreak of H1N1 in the USA during May 2009 to July 2009 period. The data was analyzed in two forms: spatial exploration and temporal exploration. The methodology involved studying the death pattern through the use of population density and the death count; overlaying the death cases onto...