Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS Measurements
The super-geomagnetic storms called 2003 Halloween event globally occurred during the period of 29 through 31 which are the following days when the solar flares of X18 class exploded on 28 October 2003. The S4 index from GPS signal strength and the peak electron density (NmF2) from GPS tomography...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
2009-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2009/v26n4/OJOOBS_2009_v26n4_467.pdf |
| _version_ | 1827362326862364672 |
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| author | Jong-Kyun Chung Byung-Kyu Choi Jungho Baek Geonhwa Jee Jungho Cho |
| author_facet | Jong-Kyun Chung Byung-Kyu Choi Jungho Baek Geonhwa Jee Jungho Cho |
| author_sort | Jong-Kyun Chung |
| collection | DOAJ |
| description | The super-geomagnetic storms called 2003 Halloween event globally occurred during
the period of 29 through 31 which are the following days when the solar flares of X18
class exploded on 28 October 2003. The S4 index from GPS signal strength and the
peak electron density (NmF2) from GPS tomography method are analyzed according
to the date. The occurrences of the cycle slip and scintillation in the GPS signals are 1,094 and 1,387 on 28 and 29 October, respectively and these values are higher than
604 and 897 on 30 and 31 October. These mean the ionospheric disturbances are
not always generated by the period of geomagnetic storm. Therefore, GPS S4 index
is useful to monitor the ionospheric disturbances. Behaviors of ionospheric electron
density estimated from GPS tomography method are analyzed with the date. At UT
= 18 hr, the maximum NmF2 is shown on 28 October. It agrees with NmF2 variation
measured from Anyang ionosonde, and the GPS signal are better condition on 30 and
31 October than 28 October. In conclusion, GPS signal condition is relation with
geomagnetic activities, and depend upon the variation of the electron density. We
will study the long-term data to examine the relationship between the GPS signal
quality and the electron density as the further works. |
| first_indexed | 2024-03-08T07:24:34Z |
| format | Article |
| id | doaj.art-ae4962e01b0549949ec6f33dc050acd6 |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T07:24:34Z |
| publishDate | 2009-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-ae4962e01b0549949ec6f33dc050acd62024-02-02T22:27:23ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14092009-12-0126446747810.5140/JASS.2009.26.4.467Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS MeasurementsJong-Kyun Chung0Byung-Kyu Choi1Jungho Baek2Geonhwa Jee3Jungho Cho4Space Geodesy Research Group, Korea Astronomy & Space Science Institute, Daejeon 305-348, KoreaSpace Geodesy Research Group, Korea Astronomy & Space Science Institute, Daejeon 305-348, KoreaSpace Geodesy Research Group, Korea Astronomy & Space Science Institute, Daejeon 305-348, KoreaCenter of Climate Sciences, Korea Polar Research Institute, Incheon 406-840, KoreaSpace Geodesy Research Group, Korea Astronomy & Space Science Institute, Daejeon 305-348, KoreaThe super-geomagnetic storms called 2003 Halloween event globally occurred during the period of 29 through 31 which are the following days when the solar flares of X18 class exploded on 28 October 2003. The S4 index from GPS signal strength and the peak electron density (NmF2) from GPS tomography method are analyzed according to the date. The occurrences of the cycle slip and scintillation in the GPS signals are 1,094 and 1,387 on 28 and 29 October, respectively and these values are higher than 604 and 897 on 30 and 31 October. These mean the ionospheric disturbances are not always generated by the period of geomagnetic storm. Therefore, GPS S4 index is useful to monitor the ionospheric disturbances. Behaviors of ionospheric electron density estimated from GPS tomography method are analyzed with the date. At UT = 18 hr, the maximum NmF2 is shown on 28 October. It agrees with NmF2 variation measured from Anyang ionosonde, and the GPS signal are better condition on 30 and 31 October than 28 October. In conclusion, GPS signal condition is relation with geomagnetic activities, and depend upon the variation of the electron density. We will study the long-term data to examine the relationship between the GPS signal quality and the electron density as the further works.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2009/v26n4/OJOOBS_2009_v26n4_467.pdfgeomagnetic stormscintillationGPSS4 |
| spellingShingle | Jong-Kyun Chung Byung-Kyu Choi Jungho Baek Geonhwa Jee Jungho Cho Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS Measurements Journal of Astronomy and Space Sciences geomagnetic storm scintillation GPS S4 |
| title | Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS Measurements |
| title_full | Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS Measurements |
| title_fullStr | Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS Measurements |
| title_full_unstemmed | Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS Measurements |
| title_short | Ionospheric Behaviors Over Korea Peninsula During the Super Geomagnetic Storm Using GPS Measurements |
| title_sort | ionospheric behaviors over korea peninsula during the super geomagnetic storm using gps measurements |
| topic | geomagnetic storm scintillation GPS S4 |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2009/v26n4/OJOOBS_2009_v26n4_467.pdf |
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