Preliminary Results of Solar Flare Induced D-Region Perturbations over UKM Using Stanford AWESOME Receiver

摘要: We present the preliminary results of VLF signal perturbations produced due to solar flare. The data were recorded by the Stanford VLF AWESOME receiver located at National University Ma-laysia, Selangor. Two new long distance (>1000 km) paths, JJI-UKM (2700 and NWC-UKM (3300 analyzed simultaneously. Data from GOES satellite were used determine onset time and type each these flares. Results indicated that all five flare events with an X-ray peak flux above 10-5 W/m2 (M-class) recorded, 37.5% for greater than 10-6 W/m2 (C-class), while weakest was 2.6 × 10-7 W/m2 (B-class) with 0.24% probing potentiality. found a strong positive correlation (0.84) between radiation intensity values amplitude phase perturbations both paths. phase perturbations time-correlated flare, varied 0.2 5 dB 0.15 20 degree respectively. These findings are in complete agreement previous works and demonstrate obtained UKM observation station will provide addi-tional contribution study ELF/VLF waves phenomena the ionosphere/magnetosphere, especially low latitudes region.