Hydrogeological and Hydrochemical Assessment of the Quaternary Aquifer South Qena City, Upper Egypt
Bibliographic record
Abstract
The aim of present work is to study the hydrogeological and hydrochemical assessment of the quaternary aquifer in area south Qena city, Upper Egypt. Quaternary aquifer is the most important source of water, not only in study area, but also in most of desert fringes new reclaimed areas along Nile valley in Egypt. Hydrogeological assessments include study the aquifer system conditions, composition, water level, groundwater flow, depth, recharge, and discharge. The Quaternary aquifer is made up of successive layers of fluvial sands and gravels with minor clay intercalations and it capped with Neonile silt and fine-grained sand in floodplain area, which are replaced by recent sediments in desert fringes. Therefore, the aquifer is under semi-confined condition in the floodplain, but it is under unconfined condition in the desert fringes. All chemical constituents have shown an increase under the desert fringes related to leaching processes of highly soluble minerals, which has high effect in the geochemistry of groundwater in its flow path. The geochemical composition of groundwater indicates direct relation between the lithology and relative abundance of ions. The floodplain area has lower ions concentrations than desert fringes, due to the continuous recharge of fresh water from the Nile River through the irrigation conveying system. The hypothetical salt combination revealed the presence of different salts arranged in terms of their predominant as NaCl, Na2SO4, NaHCO3, Mg(HCO3)2, Ca(HCO3)2, MgSO4, and KCL. The groundwater qualities were assessed, and the results revealed that all groundwater, at the floodplain and desert fringes areas, are suitable for drinking and irrigation purposes. However, the floodplain water parameters closer to acceptable limits of the WHO, EPA, and EHCW.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".