83 research outputs found
Ionosphere monitoring in South East Asia: Activities in GINESTRA and ERICA projects
No full textGINESTRA and ERICA are two projects funded in the framework of the ALCANTARA Initiative of the European Space Agency. GINESTRA is a survey which aims to explore the capabilities of ionosphere monitoring in South East Asia to identify both institutions involved in this field and existing monitoring facilities. ERICA exploits the GINESTRA outcomes and aims to characterize the ionospheric variability of the Equatorial Ionospheric Anomaly in the region, in particular the variation of the plasma electron density in the southern and northern crests of the anomaly and over the dip equator identified by the Equatorial Ionospheric Trough. To achieve this goal, an ad hoc measurements campaign is conducted with ground-based instruments located in the footprints of the Equatorial Ionospheric Anomaly and of the Equatorial Ionospheric Trough in Vietnam and Indonesia. The paper presents the outcomes of GINESTRA and highlights some preliminary results of the data analysis conducted so far in the framework of ERIC
STUDI PUSTAKA PERUBAHAN KERAPATAN ELEKTRON LAPISAN D IONOSFER MENGGUNAKAN PENGAMATAN AMPLITUDO SINYAL VLF
No full textRINGKASANStudi pustaka perubahan kerapatan elektron lapisan D ionosfer akibat peningkatan emisi flare sinar-X menggunakan pengamatan amplitudo sinyal VLF (Very Low Frequency) telah dilakukan. Dalam gelombang pandu ionosfer-bumi (GPIB), gelombang VLF suatu stasiun pemancar dan penerima mempunyai kestabilan karakteristik diurnal sehingga pengamatan ini dapat digunakan untuk pengamatan perubahan kerapatan elektron lapisan D. Emisi flare sinar-X kelas C menyebabkan sedikit peningkatan kerapatan elektron lapisan D. Emisi flare sinar-X kelas M bagian bawah menyebabkan sedikit peningkatan elektron lapisan D saat awal terjadi flare, selanjutnya terjadi peningkatan kerapatan elektron yang signifikan disertai penurunan bagian bawah lapisan D seiring meningkatnya intensitas sinar X. Emisi flare sinar-X kelas M bagian atas dan kelas X menyebabkan peningkatan drastis kerapatan elektron disertai penurunan bagian bawah lapisan D seiring meningkatnya intensitas sinar X.Hal.80-86 :ilus.; 30 c
PENGARUH MEDAN MAGNET TERHADAP SUDUT POLARISASI SINAR LASER PADA AIR DAN LARUTAN NaCl (Influence of Magnetic Field Toward Polarization Angle Of Laser Ray To Water And NaCl Solution)
Get PDFHad been done experiment about influence of external magnetic field toward polarization angle of laser ray to NaCl various concentration 5%,10%,15%,20%,25%,30%,35% and water. Optical characteristic behaviors studied in this research were vibration direction rotation of electric fields b from transmitted laser trace because of external magnetic fields in the transparent materials. The result of experiment indicated increasing polarization angle of laser
ray proportional with magnetic field touched to transparent material. If the magnetic fields touched to the transparent materials were higher, then the polarization angle change of laser ray also experienced increase linear. For NaCl
solution concentration variation, it was found that the change in polarization direction was directly comparable to its concentration. In addition, from experiment, it was also found that Verdet’s Constant water is (0,03±0,002)min/Gcm
and NaCl 0,125 molal is (0,16±0,015)min/G-cm
Statistical Study of Equatorial Plasma Bubbles in Southeast Asia Using Ionosondes, GPS, and Equatorial Atmosphere Radar
Get PDF名古屋大学Nagoya University博士(工学)doctoral thesi
Statistical Study of Equatorial Plasma Bubbles in Southeast Asia Using Ionosondes, GPS, and Equatorial Atmosphere Radar
No full textANALISIS OUTLIER UNTUK REDUKSI EFEK MULTIPATH DALAM OBSERVASI SINTILASI IONOSFER MENGGUNAKAN GPS RECEIVER (OUTLIER ANALYSIS FOR REDUCING MULTIPATH EFFECTS IN IONSOPHERIC SCINTILLATION OBSERVATION USING GPS RECEIVER)
No full text
Statistical Study of Equatorial Plasma Bubbles In Southeast Asia Using Ionosondes, GPS, and Equatorial Atmospere Radar
No full textViii, 147 hlm
Perbandingan Antara Model Tec Regional Indonesia Near-Real Time Dan Model Tec Gim (Global Ionospheric Map) Berdasarkan Variasi Harian (Diurnal
No full textHal.40-5
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