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地学前缘(英文版)
地学前缘(英文版)

莫宣学

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北京市海淀区学院路29号中国地质大学（北京）期刊中心

地学前缘(英文版)/Journal GEOSCIENCE FRONTIERSCSCDCSTPCD北大核心SCI
查看更多>>GEOSCIENCE FRONTIERS (GSF) is a quarterly journal that publishes in English significant original research articles and high quality reviews of recent advances in all fields of Earth Sciences — including stratigraphy and paleontology, mineralogy and petrology, economic geology and minerals and fuel exploration, structural geology, lithospheric tectonics, environmental and engineering geology, hydrogeology, astrogeology, marine geology, and geophysics and geochemistry. Technical papers, case histories, reviews, and discussions are welcomed.
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    Evaluation of environmental geochemical signatures due to RO rejects on arid agricultural farms and tangible solutions

    Harish BhandaryChidambaram SabarathinamAdnan AkberTariq Rashid...
    511-532页
    查看更多>>摘要：The impact of reverse osmosis(RO)rejects in the groundwater presents a significant challenge in arid regions.This study collected groundwater samples,product water,and reverse osmosis brine(ROB)from evaporation ponds and analyzed them for major ions and trace elements.Test boreholes were drilled near the ROB site along the flow direction,and borehole sediment samples were collected.The samples were predominantly gravelly sand,and the depth to water level fluctuated around 30 m below ground level(bgl),with minerals mainly consisting of calcite,gypsum,and quartz.Data loggers reflected a rise in water level(<22 m bgl)corresponding to higher electrical conductivity(＞16 mS/cm)during the cropping period in many locations,confirming the impact of ROB in groundwater.The results were further sup-ported by enriched signatures of δ18O(～+1.5‰)and δ2H(～+15‰).The saturation index of the minerals reflected that carbonate minerals(Calcite＞Dolomite)were saturated in the ROB relative to the ground-water.The vertical variation of mineral assemblages in the boreholes indicated gypsum precipitation in the capillary zone along with calcite and dolomite.The assemblage varies as the groundwater moves from the disposal site.The speciation of different compounds along the groundwater path indicated higher carbonate and sulfate species(CaCO3＞CaHCO3＞CaSO4＞NaSO4＞MgSO4)near the disposal site,with variations along the flow direction.Considering the significant variation in temperature in the region(5 to 50 ℃),the water sample composition was modeled using PHREEQC,suggesting that the increase in temperature led to supersaturation of epsomite and gypsum compositions.The ROB was the-oretically mixed with groundwater and product water in different proportions,and an optimum compo-sition(10:90)for safe disposal was derived and tested fit for reuse in agriculture.
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    Does energy policy uncertainty matter for renewable energy and energy efficiency technologies?An affordable and clean energy perspective

    Ugur Korkut Pata
    533-544页
    查看更多>>摘要：Uncertainty can affect both macroeconomic indicators and the environment.Countries are implementing various energy policies to combat global warming,but these policies contain some uncertainties and con-tradictions.The environmental impact of uncertainties in energy policies is a research topic that has just begun to be investigated by researchers.This study examines the effects of energy policy uncertainty(ENERPU)on renewable energy R&D(RR&D),energy efficiency R&D(EER&D)and renewable energy con-sumption in the four countries with the highest RR&D expenditures(USA,Germany,Japan,and Spain).The study uses the novel multivariate quantile-on-quantile(M-QQR)approach from 2003m1 to 2022m9.The results of the study show:(i)The impact of ENERPU varies by quantile and country.(ii)ENERPU causes a decrease in renewable energy consumption and hinders RR&D expenditures.(iii)ENERPU increases EER&D.The Fourier quantile causality test confirms the robustness of the empirical results.Based on these findings,policymakers are recommended to minimize ENERPU and implement stable energy policies to develop the renewable energy sector and technologies.
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    Linking basin-scale hydrology with climatic parameters in western Himalaya:Application of satellite data,temperature index modelling and in-situ observations

    Smriti SrivastavaMohd.Farooq AzamPraveen Kumar Thakur
    545-561页
    查看更多>>摘要：Due to limited spatial and temporal in-situ runoff data availability,Himalaya-Karakoram(HK)glaciohy-drology has a significant knowledge gap between large-scale and small-scale runoff modelling studies.This study reconstructs longest basin-wide runoff series in Chandra-Bhaga Basin by applying a high-resolution glaciohydrological model SPHY(Spatial Processes in Hydrology)over 1950-2022.Two-tier model calibration is done using in-situ basin-wide runoff(1973-2006)and MODIS snow cover(2003-2018).Model validation is done against in-situ Chhota Shigri Glacier catchment-wide runoff(2010-2015).The modelled mean annual basin-wide runoff is 60.21±6.17 m3/s over 1950-2022,with maxi-mum runoff in summer-monsoon months,peaking in July(182.69 m3/s).Glacier runoff(ice melt+snowmelt over glacier)contributes maximum(39％)followed by equal contributions from snow-melt runoff from non-glacierized basin area and baseflow(25％),while rainfall-runoff contributes mini-mum(11％)to total runoff.There is a significant volumetric increase by～7％from pre-(59.17 m3/s)to post-2000(63.47 m3/s)mainly because of early onset of snowmelt post-2000 that resulted in a hydro-graph shift by～25 days earlier in spring.The glacier runoff is overestimated by 3％from RGI 7.0 inventory compared to different manually delineated inventories over 1950-2022,because of higher glacierized area from RGI 7.0.The precipitation shows a negative trend,but total runoff shows a positive trend due to positive trend of temperature that resulted in more glacier runoff and rainfall-runoff for basin over last 72 years.Basin-wide runoff is mainly governed by summer temperature which directly controls the amount of glacier and snowmelt runoffs and is supported by summer rainfall.This study highlights importance of basin-scale model calibration with in-situ data in large scale studies and stresses the need for in-situ observations in high-altitude Himalayan region.Basin-scale calibrated model parameters are transferable to glacier catchment scale within Chandra-Bhaga Basin,showing the model robustness at a small catchment scale.
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    Ouyang,Z.Y.(Ed.),2024.The Geologic Map Series of the Moon(including Map Quadrangles of the Geologic Atlas of the Moon &Geologic Atlas of the Lunar Globe).Geological Publishing House,Beijing,China

    Yajun LiuJinjian WuShigang Zhang
    563-564页
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