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Recognition of the hydrogeological potential using electrical sounding in the Khemisset-Tiflet region, Morocco

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Journal of Groundwater Science and Engineering 2020年第2期8卷 172-179页

作者： Fatima Zahra FAQIHI anasse BENSLIMANE Abderrahim LAHRACH Mohamed CHIBOUT Mohamed EL MOKHTAR Laboratory Géodynamics and Natural Ressources Faculty of Sciences Dhar El MahrazUniversity Sidi Mohamed Ben AbdellahPB 1796 Fez-Atlas30003Morocco Laboratory of Georessourcesand Environment Faculty of Sciences and TechniqueUniversity Sidi Mohamed Ben AbdellahFES PB 2202-Route d’ImouzzerFES-Morocco Laboratory of Geosciences of Natural Resources Faculty of SciencesUniversity Ibn TofailPB 133Kenitra Morocco

The low recharge of reservoirs and the increasing demand for water limit the potential of mobilized resources, especially in arid to semi-arid areas like Morocco. Integrated management is essential to safeguard this resource. In respect with this perspective, this work provides the analysis of hydrogeological potential of Khemisset-Tiflet region, which falls within the action area of the Sebou Hydraulic Basin Agency. The basis of our studies was as follows:(1) The interpretation of the existing geoelectric data;(2) application of geophysical methods for non-destructive reconnaissance and their integration into a Geographic Information System(GIS). The analysis demonstrates that: The map of the isohypses and the geoelectric cross-section of the substratum of the superficial roof aquifer show clearly a plunge associated with development of the Paleozoic roof in the South and the direction of flow of the surface water is from south to north, from the upper zone to the north of the El Kansera dam. These conclusions constitute very useful contribution for any resource management projects in this area.

关键词： Geophysics Geoelectic Aquifer Hydrogeology GIS Khémisset-Tiflet

Towards an Artificial Intelligence Framework for Data-Driven Prediction of Coronavirus Clinical Severity

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Computers, Materials & Continua 2020年第4期63卷 537-551页

作者： Xiangao Jiang Megan Coffee anasse Bari Junzhang Wang Xinyue Jiang Jianping Huang Jichan Shi Jianyi Dai Jing Cai Tianxiao Zhang Zhengxing Wu Guiqing He Yitong Huang Department of Infectious Diseases Wenzhou Central HospitalWenzhou325000China Division of Infectious Diseases and Immunology Department of MedicineNew York UniversityNew YorkUSA Department of Population and Family Health Mailman School of Public HealthColumbia UniversityNew YorkUSA Courant Institute of Mathematical Sciences Computer Science DepartmentNew York UniversityNew YorkUSA Columbia College Columbia UniversityNew YorkUSA Departments of Infectious Diseases Cangnan People’s HospitalWenzhou325800China Department of Gynaecology Wenzhou Central HospitalWenzhou325000China

The virus SARS-CoV2,which causes the Coronavirus disease COVID-19 has become a pandemic and has spread to every inhabited *** the increasing caseload,there is an urgent need to augment clinical skills in order to identify from among the many mild cases the few that will progress to critical *** present a first step towards building an artificial intelligence(AI)framework,with predictive analytics(PA)capabilities applied to real patient data,to provide rapid clinical decision-making ***-19 has presented a pressing need as a)clinicians are still developing clinical acumen given the disease’s novelty,and b)resource limitations in a rapidly expanding pandemic require difficult decisions relating to resource *** objectives of this research are:(1)to algorithmically identify the combinations of clinical characteristics of COVID-19 that predict outcomes,and(2)to develop a tool with AI capabilities that will predict patients at risk for more severe illness on initial *** predictive models learn from historical data to help predict specifically who will develop acute respiratory distress syndrome(ARDS),a severe outcome in *** experimental results based on two hospitals in Wenzhou,Zhejang,China identify features most predictive of ARDS in COVID-19 initial presentation which would not have stood out to clinicians.A mild increase in elevated alanine aminotransferase(ALT)(a liver enzyme)),a presence of myalgias(body aches),and an increase in hemoglobin,in this order,are the clinical features,on presentation,that are the most *** two centers’COVID-19 case series symptoms on initial presentation can help predict severe *** models that learned from historical data of patients from two Chinese hospitals achieved 70%to 80%accuracy in predicting severe cases.

关键词： SARS-CoV2 COVID-19 coronavirus infectious diseases artificial intelligence predictive analytics

Application of Electrical Tomography to Put in Evidence the Thickness and Structure of the Filling of Dayet Iffer (Middle Atlas, Morocco)

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International Journal of Geosciences 2020年第4期11卷 170-183页

作者： Bouchra Lemdeghri Alaoui Abdennasser Baali Mohamed Chibout anasse Benslimane Fatima Zahra Faqihi Laboratory “Geosystem Environment and Sustainable Development” Faculty of Sciences Dhar El Mahraz University Sidi Mohamed Ben Abdellah Fez Morocco Laboratory “Géodynamics and Natural Ressources” Faculty of Sciences Dhar El Mahraz University Sidi Mohamed Ben Abdellah Fez Morocco

The Dayet Iffer belongs to the Dayets of tectono-karst origin of the Northern Middle Atlas. After its watershed genesis of middle altitude during the Quaternary, two lacustrine formations were deposited on the surface while other thick formations exist in depth. The detailed sedimentological study of the soltanian and holocene lithological sections on the surface and the 14C datings helped recognize part of the history of the watershed. The geophysical study allowed to detect the thickness of the superficial geological formations as well as the various geological phenomena (tectonic and/or karst) that affected them from the genesis to the present. The current shape of the watershed where the Dayet Iffer exists is only the result of an evolution where sedimentary, tectonic and karst phenomena interfere. The tomography obtained with Res2DInv software, performed for the first time at the Dayet Iffer, reveals the presence of three ranges which can be interpreted as three resistive, intermediate and conductive zones with a large set of faults. These results helped determine the thickness (over 160 m) of the sedimentary filling. This shows that the hydrological behavior of the Dayet Iffer takes into account both horizontal flows at the stratification and/or karstic joints and the movement of sub-vertical fractures.

关键词： Electrical Tomography Resistivity Lacustrine Sediments Dayet Quaternary Middle Atlas

Geophysical Contribution to the Determination of the Limit between Laayoune and Foum El Oued Aquifers, Origin of Supply Sources of Oued Sakia El Hamra, Laayoune Province, Morocco

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International Journal of Geosciences 2019年第11期10卷 1008-1035页

作者： Mohamed Chibout anasse Benslimane Mohamed El Mokhtar Fatima Zahra Faqihi Sidi Mokhtar El Kanti Ahmed Ntarmouchant Laboratory of Geodynamics and Natural Resources (LGRN) Faculty of Sciences Dhar Mahraz Sidi Mohamed Ben Abdellah University Fez Morocco Laboratory of Geosciences and Natural Resources Faculty of Sciences University Ibn Tofail Kenitra Morocco. AFRICA GEO-SERVICES Company 33 Offices Al Manar Street Abd Elkarim Khattabi Fez VN Morocco Hydraulic Basin Agency of Sakia El Hamra and Oued Ed-Dahab Administrative District Laayoune Morocco

Laayoune and the Foum El Oued aquifers are in hydraulic communication only at the level of Oued Saguia El Hamra. The present study has accordingly made use of all the hydrogeological, hydrological, geological and geophysical data that preceded the watershed of Oued Saguia El Hamra in its downstream part. These data are by no means omplementary with the objective of having a better understanding of the boundary line between Laayoune and Foum El Oued aquifers and the origin of feeding the sources of Oued Saguia El Hamra. This study will focus only on the previous geophysical studies where a reinterpretation of electrical soundings has proved useful as a result of the recent well-logging results. It makes it possible to highlight the presence of a significant rise in the truncated marly substratum of Oued Saguia El Hamra and depressions (left and right banks) which could correspond to stream channels or depressed areas. At the level of the Wadi bed, there has been a regular immersion of the conductive level roofs from east to west towards Foum El Oued favoring the flow of wastewater from the zone and spraying the brackish water sources towards the groundwater of Foum El Oued. In the light of the reinterpretation of electric polls, plus as well as the geophysical surveys by electrical tomography and high definition made at the right and left banks of the Oueed Saguia El-Hamra, it was possible to verify the existence of dry ridge separating the two webs of Laayoune and Foum El Oued and stream channels or depressed areas of the left bank for drainage of brackish water to sources located along Oued Saguia El Hamra. The true resistivity models tomography profiles confirm the presence of the backbone at the left and right banks and the graben of the left bank for underground water drainage of the web Laayoune to sources welling the river Saguia El Hamra. They reveal the presence of a quaternary plio-cover (coastal platform Moghrebian) as being heterogeneous and affected by m

关键词： Laayoun and Faum Al Oued Aquifers Ridge Limit Wastewater Brackish Wa-ter Marl Bedrock Vertical Electrical Sounding (SEV) Electrical Tomography (ETR)

Geophysical Study by Electrical Soundings of the Tartar Aquifer Unit, Boujdour Region, Morocco

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International Journal of Geosciences 2020年第3期11卷 58-83页

作者： Mohamed Chibout anasse Benslimane Mohamed El Mokhtar Sidi Mokhtar El Kanti Fatima Zahra Faqihi Lahcen Gourari Geodynamics Laboratory of Natural Resources (LGRN) Dhar Mahraz Faculty of Science Sidi Mohamed Ben Abdellah University Fez Morocco Geosciences Laboratory of Natural Resources (LGRN) Hydroinformatics Team Faculty of Science Ibn Tofail University Maamora Campus Kenitra Morocco AFRICA GEO-SERVICES Society Fez Morocco Sakia El Hamra and Oued Eddahab Hydraulic Basin Agency Laayoune Morocco

The Tartar aquifer unit, is located at the SSO of the city of Boujdour, at a distance of nearly 86 km, and crossed (in its western part) by the National Road N1 connecting the towns of Boujdour and Lagouira passing through the vicinity of the city of Dakhla (PK40). It is exploited by rural settlements for domestic use (especially the inhabitants of fishing villages) and livestock watering, only through wells named Khtout Hobia (IRE 126/124) and Hassi Tartar known as Khtout Trayh (IRE 104/124). These wells have been tracked by a piezometric groundwater table and from 2011 to the present day. The interpretation of the electrical soundings in AB ≤ 2000 m allowed to differentiate the presence of two families of electrical soundings A and B, to establish the resistivity maps in AB = 200, 300 and 400 ihm⋅m with qualitative aspects, to draw up the map of the isohypses of the roof of the intermediate Dt1 representing the impermeable floor of the aquifer and to highlight two types of discontinuities;electrical discontinuities corresponding to lateral facies changes (limit of erosion surfaces) separating the families A and B of electrical soundings and those corresponding to syn-sedimentary faults which structured the formations into horsts and grabens. The lithological sections of the existing water points and that of oil well 43-1 allowed the geological identification of the geoelectric layers highlighted by the electrical soundings diagrams. As a result, the sandstone and lumachelic formations constituting the aquifer are of Moghrebian-Pleistocene age represented by the resistant R (Family A), sometimes grouping, in its basal part, sandstone levels of the Miocene roof (Family B). These formations lie directly on the Miocene sandy marls represented by the intermediate Dt1. For the present work, we will focus only on the transverse geoelectric cross-section TA, with an SW-NE orientation, which characterizes all the longitudinal sections established following the correla

关键词： Tartar Aquifer Unit Vertical Electrical Soundings Resistivity