Hydrochemistry of Umm Er Radhuma Groundwater  

作　　者：Muhammad Gomaah Muhammad Gomaah(Desert Research Center, Cairo, Egypt;United Nations Developing Program (UNDP) & Ministry of Env. Water and Agriculture, Riyadh, KSA)

机构地区：[1]Desert Research Center, Cairo, Egypt [2]United Nations Developing Program (UNDP) & Ministry of Env. Water and Agriculture, Riyadh, KSA

出　　处：《Journal of Geoscience and Environment Protection》2021年第4期128-146,共19页地球科学和环境保护期刊（英文）

摘　　要：Umm Er Radhuma Aquifer (UER) is the most important groundwater aquifer in Saudi Arabia, extending over 1.6 M<span style="font-size:10.5pt;font-family:;" "=""><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"=""><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">·</span></span></span>km^{<span style="font-family:Verdana;">2</span>}<span style="font-family:Verdana;"> in the eastern part of the Arabian Peninsula, forming the main aquifer throughout the Rub’ Al-Khali (RAK). </span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">Groundwater salinity increased from west to east, reaching more than 27,000 mg/L near the border with the United Arab Emirates, where a Na</span>^{<span style="font-family:Verdana;">+</span>}<span style="font-family:Verdana;">-Ca</span>^{<span style="font-family:Verdana;">2+</span>}<span style="font-family:Verdana;">Cl<span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">ˉ</span></span><span style="font-family:Verdana;">-<img src="Edit_c1bbc858-a8a7-45ca-be57-e2bb456cbddb.bmp" alt="" /></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> </span></span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">water type dominated. Gibbs diagrams indicated that the dissolution/precipitation of carbonates and evaporation/precipitation of minerals, especially anhydrite, gypsum, and halite account for the solutes and salinity in groundwater. Most of the samples plot above the 1:1 line of (Ca</span>^{<span style="font-family:Verdana;">2+</span>}<span style="font-family:Verdana;"> + Mg</span>^{<span style="font-family:Verdana;">2+</span>}<span style="font-family:Verdana;">) against <iUmm Er Radhuma Aquifer (UER) is the most important groundwater aquifer in Saudi Arabia, extending over 1.6 M<span style="font-size:10.5pt;font-family:;" "=""><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"=""><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">·</span></span></span>km^{<span style="font-family:Verdana;">2</span>}<span style="font-family:Verdana;"> in the eastern part of the Arabian Peninsula, forming the main aquifer throughout the Rub’ Al-Khali (RAK). </span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">Groundwater salinity increased from west to east, reaching more than 27,000 mg/L near the border with the United Arab Emirates, where a Na</span>^{<span style="font-family:Verdana;">+</span>}<span style="font-family:Verdana;">-Ca</span>^{<span style="font-family:Verdana;">2+</span>}<span style="font-family:Verdana;">Cl<span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">ˉ</span></span><span style="font-family:Verdana;">-<img src="Edit_c1bbc858-a8a7-45ca-be57-e2bb456cbddb.bmp" alt="" /></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> </span></span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">water type dominated. Gibbs diagrams indicated that the dissolution/precipitation of carbonates and evaporation/precipitation of minerals, especially anhydrite, gypsum, and halite account for the solutes and salinity in groundwater. Most of the samples plot above the 1:1 line of (Ca</span>^{<span style="font-family:Verdana;">2+</span>}<span style="font-family:Verdana;"> + Mg</span>^{<span style="font-family:Verdana;">2+</span>}<span style="font-family:Verdana;">) against <i

关 键 词：HYDROCHEMISTRY Umm Er Radhumma Aquifer GROUNDWATER Water-Rock Interaction 

分 类 号：P64[天文地球—地质矿产勘探]