An observing system simulation experiment for FORMOSAT-5/AIP detecting seismo-ionospheric precursors

Liu, Jann Yenq; Chao, Chun-Chieh

doi:10.3319/tao.2016.07.18.01(eof5)

Cited by 16 publications

(9 citation statements)

References 24 publications

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“…FORMOSAT‐5 operates in a sun synchronous orbit at nearly 720 km altitude with 98.28° inclination angle. It carries the remote sensing instruments for providing multispectral and panchromatic imaging capabilities and the Advanced Ionospheric Probe for monitoring the ionospheric irregularities and earthquake precursors (Chen et al, ; Liu & Chao, ).…”

Section: Introductionmentioning

confidence: 99%

Gigantic Circular Shock Acoustic Waves in the Ionosphere Triggered by the Launch of FORMOSAT‐5 Satellite

et al. 2018

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The launch of SpaceX Falcon 9 rocket delivered Taiwan's FORMOSAT‐5 satellite to orbit from Vandenberg Air Force Base in California at 18:51:00 UT on 24 August 2017. To facilitate the delivery of FORMOSAT‐5 to its mission orbit altitude of ~720 km, the Falcon 9 made a steep initial ascent. During the launch, the supersonic rocket induced gigantic circular shock acoustic waves (SAWs) in total electron content (TEC) over the western United States beginning approximately 5 min after the liftoff. The circular SAWs emanated outward with ~20 min duration, horizontal phase velocities of ~629–726 m/s, horizontal wavelengths of ~390–450 km, and period of ~10.28 ± 1 min. This is the largest rocket‐induced circular SAWs on record, extending approximately 114–128°W in longitude and 26–39°N in latitude (~1,500 km in diameter), and was due to the unique, nearly vertical attitude of the rocket during orbit insertion. The rocket‐exhaust plume subsequently created a large‐scale ionospheric plasma hole (~900 km in diameter) with 10–70% TEC depletions in comparison with the reference days. While the circular SAWs, with a relatively small amplitude of TEC fluctuations, likely did not introduce range errors into the Global Navigation Satellite Systems navigation and positioning system, the subsequent ionospheric plasma hole, on the other hand, could have caused spatial gradients in the ionospheric plasma potentially leading to a range error of ~1 m.

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Section: Introductionmentioning

confidence: 99%

Gigantic Circular Shock Acoustic Waves in the Ionosphere Triggered by the Launch of FORMOSAT‐5 Satellite

et al. 2018

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“…FORMOSAT-5 operates in a sun synchronous orbit at nearly 720 km altitude with 98.28°inclination angle. It carries the remote sensing instruments for providing multispectral and panchromatic imaging capabilities and the Advanced Ionospheric Probe for monitoring the ionospheric irregularities and earthquake precursors (Chen et al, 2017;Liu & Chao, 2017).…”

Section: Introductionmentioning

confidence: 99%

Space Weather Quarterly Volume 15, Issue 1, 2018

2018

Space Weather Quarterly

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“…To see whether FORMOSAT-5/AIP can be used to detect seismo-ionospheric precursors (SIPs) or not, ion density, temperature, and velocity probed by ROCSAT-1/IPEI have been examined as well as the global ionospheric map (GIM) of the total electron content (TEC) derived by ground-based GPS receivers during the 31 March 2002 M6.8 Earthquake in Taiwan (Liu and Chao 2017). The anomalous decreases in the ROCSAT-1/IPEI ion density and the GIM TEC concurrently appear around the epicenter area 1 -5 days before the earthquake, which suggests that FORMOSAT-5/AIP can be used to detect SIPs.…”

Section: Seismic Precursormentioning

confidence: 99%

Advanced Ionospheric Probe scientific mission onboard FORMOSAT-5 satellite

Lin¹,

Chao²,

Liu³

et al. 2017

Terr. Atmos. Ocean. Sci.

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Advanced Ionospheric Probe (AIP) is a piggyback science payload developed by National Central University for FORMOSAT-5 satellite to explore space weather/ climate and seismic precursors associated with strong earthquakes. The AIP is an all-in-one plasma sensor that measures ionospheric plasma concentrations, velocities, and temperatures in a time-sharing way and is capable of measuring ionospheric plasma irregularities at a sample rate up to 8192 Hz over a wide range of spatial scales. Electroformed gold grids used in the AIP in theory construct planar electric potential surfaces better than woven grids. Moreover, a plasma injection test performed in the Space Plasma Simulation Chamber has verified that no significant hysteresis is found in current-voltage curves measured by the AIP. It indicates that the AIP can make an accurate measurement of the ionospheric plasma parameters in space. Finally, Ionospheric Plasma and Electrodynamics Instrument (IPEI) observations onboard the ROCSAT-1 satellite are applied to show that the scientific objectives of ionospheric space weather/climate and seismo-ionospheric precursors (SIPs) of the FORMOSAT-5/AIP can be fulfilled. The observations reveal that ion parameter global distributions are helpful in studying the formation and variation in temperature crests and troughs in the 2200 -2300 local time sector, as well as SIPs in the density and the velocity over the epicenter area, which are anticipated for the FORMOSAT-5 satellite orbit.

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An observing system simulation experiment for FORMOSAT-5/AIP detecting seismo-ionospheric precursors

Cited by 16 publications

References 24 publications

Gigantic Circular Shock Acoustic Waves in the Ionosphere Triggered by the Launch of FORMOSAT‐5 Satellite

Gigantic Circular Shock Acoustic Waves in the Ionosphere Triggered by the Launch of FORMOSAT‐5 Satellite

Space Weather Quarterly Volume 15, Issue 1, 2018

Advanced Ionospheric Probe scientific mission onboard FORMOSAT-5 satellite

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