original research papers

• Investigation into potential TEC changes due to 9 seismic tremors of 2021–2022

  Kunvar S. YADAV, Rakesh B. VADNATHANI, Mangesh D. BHOYA, Keyurgiri R. GOSWAMI

  1-22

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• Regular observations of the geomagnetic field at the Ógyalla observatory (present-day Hurbanovo) near the turn of the 20th century, including magnetic storms accompanied by auroras in March 1894, September 1898, and October 1903

  Fridrich VALACH, Magdaléna VÁCZYOVÁ, Dalibor VÝBERČI, Eduard KOČI

  23-48

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• Exploring carbonate reservoirs potential, north Egypt

  Mohamed Said RADWAN, Mohamed GOBASHY, Said DAHROUG, Samir RASLAN

  49-66

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• Comparison of anomalies in the VLF spectrum of the natural electromagnetic field with data from the seismometer in a landslide-affected area

  Michal HOFFMAN, Eduard KOČI

  67-84

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• Probabilistic forecast of next earthquake event in Makran subduction zone using Weibull distribution

  Adil REHMAN, Huai ZHANG

  85-93

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• Evaluation of the air quality in arid climate megacities (Case study: Greater Cairo)

  Mohammed Mahmoud A. HWEHY, Fawzia Ibrahim MOURSY, Attia Mahmoud EL-TANTAWI, Mostafa Abd El-Hameed MOHAMED

  95-118

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