Time-series analyses of temperature data are important for investigating variation and predicting change. Here, Mann–Kendall (M–K) time-series in northeastern Bangladesh indicated increasing trends (Sen's slope maximum minimum yearly at Sylhet 0.03 °C 0.026 °C, respectively, a Sreemangal 0.024 °C) except the Sreemangal. The linear showed that is by 2.97 0.59 per hundred years, minimum, 2.17 2.73 years stations, indicating climate change affecting this area. This paper presents an alternative...

Abstract Many developing countries experience widespread groundwater declination. Sustainable management actions include generation of an accurate distribution based on extensive monitoring network which is often cost prohibiting in the context a country such as Bangladesh. Further, knowledge lacking for Sylhet region where was documented to be under tremendous pressure. Specifically, gap current literature exists regarding trends and its areal extent this region. This paper bridges research...

With the massive expansion of urbanization worldwide, a huge volume construction and demolition waste (CDW) generation has become common issue along with CDW from controlled earthquakes, which causes tremendous headache for environmentalists. Moreover, sliding failure slope hillocks, hills, roads, earthen dams raise concerns geotechnical engineers. Among several methods improving behaviour soil slopes, this research utilized CDW-based recycled concrete aggregates (RCA) to improve slopes two...

The study explored droughts using the Standardized Precipitation Index (SPI) in northwestern region of Bangladesh, which is drought prone area. In order to assess trend and variability monthly rainfall, as well 3-month scale SPI, non-parametric Mann-Kendall (MK) tests continuous wavelet transform were used respectively. effect climatic parameters on this was also evaluated with Southern Oscilation (SOI) by means coherence technique, a relatively new powerful tool for describing processes. MK...

Bangladesh being a low-lying country is affected by floods easily that turns the Sylhet city more vulnerable to due improper management of stormwater and failure in estimating runoff volume Surma River. For this, CN value area, direct area peak discharge for different return periods were calculated. Meanwhile, geometric data imported into HEC-RAS software obtain flood depth extend. Finally, an HEC-GeoRAS simulation resulted floodplain map. The inundation found from map covers 6.34% total...

Water bodies such as lakes, ponds or water supply reservoir show vertical stratification of their masses, at least for some extended time periods. Density differences facilitate the process stratification. Temperature and dissolved substances contribute to density in water. As a result, thermal can be established during warm season if are sufficiently deep. On contrary, cold surface cooling force circulation result turnover will occur. In warmer weather regions Bangladesh, India etc. this...

The current study aimed at investigating cycles and the spatial autocorrelation pattern of anomalies thunderstorms in Iran during different periods from 1961 to 2010. In this analysis, 50-year (1961–2010) thunderstorm codes have been collected 283 synoptic stations Meteorological Organization Iran. period has divided into five decades (1961–1970, 1971–1980, 1981–1990, 1991–2000, 2001–2010). Spectral analysis Moran’s I were used analyze pattern, respectively. Furthermore, order conduct...

Nowadays, time series analysis of rainfall data is a major tool to explore variability pattern. In this study, at 28 stations Bangladesh has been evaluated using trend test, spatial and Artificial Neural Network (ANN) model. From the Mann-Kendall’s (M-K) it was observed that value Sen’s slope for maximum increase 1.813 mm per month in Cox’s Bazar decrease -0.896 Bhola. Rainfall were smoothed wavelet transformation then denoised signals used fitting The predictive capability ANN model...

Abstract Local leakage processes and potential migration pathways of modern water (< 60 years) from the shallow aquifer, into underlying semiconfined Memphis were evaluated to assess vulnerability groundwater in Light, Gas Water’s (MLGW) Sheahan well field. To identify source(s) water, integrated hydrostratigraphic analysis, numerical modeling, hydrologic tracers, geochemical modeling utilized. The percentage present aquifer production wells is estimated using inverse lumped parameter...

Groundwater is important for managing the water supply in agricultural countries like Bangladesh. Therefore, ability to predict changes of groundwater level necessary jointly planning uses resources. In this study, a new nonlinear autoregressive with exogenous inputs (NARX) network has been applied simulate monthly levels well Sylhet Sadar at local scale. The Levenberg-Marquardt (LM) and Bayesian Regularization (BR) algorithms were used train NARX network, results compared determine best...

The trend of drought in the northwestern region Bangladesh was analysed this study. To analyse multiscalar index standardised precipitation evaporation (SPEI), Mann-Kendall's test and Sen's slope estimator have been used. Assessment variability SPEI conducted by means continuous wavelet power spectrum. Significant 6 month scale found at 16 to 32 months 64 period from almost 1987 2008. grasp influence southern oscillation (SOI) on a SPEI, statistical tool coherence (WTC) has coherency...

The trend of drought in the northwestern region Bangladesh was analysed this study. To analyse multiscalar index standardised precipitation evaporation (SPEI), Mann-Kendall's test and Sen's slope estimator have been used. Assessment variability SPEI conducted by means continuous wavelet power spectrum. Significant 6 month scale found at 16 to 32 months 64 period from almost 1987 2008. grasp influence southern oscillation (SOI) on a SPEI, statistical tool coherence (WTC) has coherency...

Abstract The dry season irrigation primarily depends on groundwater in Bangladesh. over-abstraction, along with decreasing recharge, is depleting the resource across country. Consequently, government of Bangladesh planning to switch from surface water irrigation. In line this, Water Development Board has proposed construct a rubber dam Mohananda river at Chapai Nawabganj district. This work investigated impact reservoir facilitated adjacent study area. A coupled river–groundwater modeling...

Temperature is an essential weather component because of its tremendous impact on humans and the environment. As a result, one widely researched parts global climate change study temperature forecasting. This work analyzes trends forecasts to see transient variations over time using daily data from January 1, 2016 – November 3, 2019, collected station located at Memphis International Airport. The Mann-Kendall (M-K) test used detect series analysis patterns as non-parametric technique. result...

Time series analysis of temperature data can be a valuable tool to investigate variability pattern as well predict short and long-term changes. Here, linear trends showed that the maximum is increasing by 2.97°C 0.59°C per hundred years, minimum, 2.17°C 2.73°C years at Sylhet Sreemangal stations. Anomaly these regions also temperature. Seasonal autoregressive integrated moving average (SARIMA) model was fitted for time with its traditional three steps: identification, diagnosis forecasting...

The discourse on the legalization of polygamy that Aceh Government wishes to set forth in Family Qanun has become one issues spread among community so it drawn pros and cons products. As a special autonomous region authority carry out Islamic syari'at, course this is relevant if stated Qanun, but people's perceptions certainly cannot be ignored. This research was conducted using qualitative methods with secondary data analysis techniques such as literature studies Narative Review scheme....

Time series analysis of temperature data can be a valuable tool to investigate variability pattern as well predict short and long-term changes. Here, linear trends showed that the maximum is increasing by 2.97°C 0.59°C per hundred years, minimum, 2.17°C 2.73°C years at Sylhet Sreemangal stations. Anomaly these regions also temperature. Seasonal autoregressive integrated moving average (SARIMA) model was fitted for time with its traditional three steps: identification, diagnosis forecasting...

This study utilizes a combination of GCM-RCM models and the HEC-RAS model to assess effects climate change on sediment transport dredging costs. Under RCP4.5 RCP8.5 scenarios for period 2049-2065, yield is projected rise by 13.2% 18.5% respectively, with general increase in most months but decrease June July. Results demonstrated that as volume increases, costs accordingly. It predicted will from $125,000 $160,000 between 2025 2045, aligning historical trend escalating expenses due...