Scenario-based seismic hazard analysis using spectral element method in northeastern Pakistan     

Khan  Saad  van der Meijde  Mark  van der Werff  Harald  Shafique  Muhammad 《Natural Hazards》2020,103(2):2131-2144

Natural Hazards - Seismic hazard analysis is carried out in this study by estimating ground motion for hypothetical earthquakes in the area of Muzaffarabad, Pakistan, with the MT solution of the...  相似文献   

Hydro-geochemical evaluation of groundwater with studies on water quality index and suitability for drinking in Sagardari,Jashore          下载免费PDF全文

Ahmed Mohammad Tofayal  Monir Minhaj Uddin  Hasan Md Yeasir  Rahman Md Mominur  Rifat Md Shamiul Islam  Islam Md Naim  Khan Abu Shamim  Rahman Md Mizanur  Islam Md Shajidul 《地下水科学与工程》2020,8(3):259-273

Sagardari union is facing groundwater crisis because of contaminations from agriculture and urban sewage, which bring a considerable change in water quality. In view of this, hydro-chemical analyses were undertaken on 35 groundwater samples and the following hydro-geochemical parameters, pH, total dissolved solids (TDS), total hardness (TH), electrical conductivity (EC), cations and anions, were analyzed. From the analytical results, it is found that pH value was lower than WHO drinking water standard and the middle-downstream portions of the investigation region show higher EC. The piper plot indicates that the groundwater in Sagardari falls in the categories of NaClHCO₃ hydro-chemical facies. Higher TH in groundwater was detected, but still in an acceptable range. In addition, salinity and arsenic ratio are higher and moderately higher, respectively. The spatial distribution of Groundwater Quality Index (GWQI) was determined by geo-statistical modelling of Sagardari union. The study provides information and supports the administration which to make better groundwater utilization and quality control in the Sagardari union.  相似文献