GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm
As a part of collaborative efforts to understand ionospheric irregularities, the Korea ionospheric scintillation sites (KISS) network has been built based on global positioning system (GPS) receivers with sampling rates higher than 1 Hz. We produce the rate of TEC index (ROTI) to represent GPS TEC f...
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ftdoajarticles:oai:doaj.org/article:6f45c10f91b448ce88f3086e9e02486a 2023-05-15T17:04:19+02:00 GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm Jong-Kyun Chung Junseok Hong Sung-Moon Yoo Jeong-Han Kim Geonhwa Jee Valery V. Hegai 2017-12-01T00:00:00Z https://doi.org/10.5140/JASS.2017.34.4.245 https://doaj.org/article/6f45c10f91b448ce88f3086e9e02486a EN eng Korean Space Science Society (KSSS) http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2017/v34n4/OJOOBS_2017_v34n4_245.pdf https://doaj.org/toc/2093-5587 https://doaj.org/toc/2093-1409 doi:10.5140/JASS.2017.34.4.245 2093-5587 2093-1409 https://doaj.org/article/6f45c10f91b448ce88f3086e9e02486a Journal of Astronomy and Space Sciences, Vol 34, Iss 4, Pp 245-250 (2017) GPS TEC fluctuation rate of TEC index ionospheric irregularity low and high latitudes Astronomy QB1-991 article 2017 ftdoajarticles https://doi.org/10.5140/JASS.2017.34.4.245 2022-12-31T01:50:49Z As a part of collaborative efforts to understand ionospheric irregularities, the Korea ionospheric scintillation sites (KISS) network has been built based on global positioning system (GPS) receivers with sampling rates higher than 1 Hz. We produce the rate of TEC index (ROTI) to represent GPS TEC fluctuations related to ionospheric irregularities. In the KISS network, two ground-based GPS sites at Kiruna (marker: KIRN; geographic: 67.9° N, 21.4° E; geomagnetic: 65.2° N) and Chuuk (marker: CHUK; geographic: 7.5° N, 151.9° E; geomagnetic: 0.4° N) were selected to evaluate the ROTI value for ionospheric irregularities during the occurrence of the 2015 St. Patrick’s Day storm. The KIRN ROTI values in the aurora region appear to be generally much higher than the CHUK ROTI values in the EIA region. The CHUK ROTI values increased to ~0.5 TECU/min around UT=13:00 (LT=23:00) on March 16 in the quiet geomagnetic condition. On March 17, 2015, CHUK ROTI values more than 1.0 TECU/min were measured between UT=9:00 and 12:00 (LT=19:00 and 22:00) during the first main phase of the St. Patrick’s Day storm. This may be due to ionospheric irregularities by increased pre-reversal enhancement (PRE) after sunset during the geomagnetic storm. Post-midnight, the CHUK ROTI showed two peaks of ~0.5 TECU/min and ~0.3 TECU/min near UT=15:00 (LT=01:00) and UT=18:00 (LT=04:00) at the second main phase. The KIRN site showed significant peaks of ROTI around geomagnetic latitude=63.3° N and MLT=15:40 on the same day. These can be explained by enhanced ionospheric irregularities in the auroral oval at the maximum of AE index Article in Journal/Newspaper Kiruna Directory of Open Access Journals: DOAJ Articles Eia ENVELOPE(7.755,7.755,63.024,63.024) Kiruna |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
GPS TEC fluctuation rate of TEC index ionospheric irregularity low and high latitudes Astronomy QB1-991 |
spellingShingle |
GPS TEC fluctuation rate of TEC index ionospheric irregularity low and high latitudes Astronomy QB1-991 Jong-Kyun Chung Junseok Hong Sung-Moon Yoo Jeong-Han Kim Geonhwa Jee Valery V. Hegai GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm |
topic_facet |
GPS TEC fluctuation rate of TEC index ionospheric irregularity low and high latitudes Astronomy QB1-991 |
description |
As a part of collaborative efforts to understand ionospheric irregularities, the Korea ionospheric scintillation sites (KISS) network has been built based on global positioning system (GPS) receivers with sampling rates higher than 1 Hz. We produce the rate of TEC index (ROTI) to represent GPS TEC fluctuations related to ionospheric irregularities. In the KISS network, two ground-based GPS sites at Kiruna (marker: KIRN; geographic: 67.9° N, 21.4° E; geomagnetic: 65.2° N) and Chuuk (marker: CHUK; geographic: 7.5° N, 151.9° E; geomagnetic: 0.4° N) were selected to evaluate the ROTI value for ionospheric irregularities during the occurrence of the 2015 St. Patrick’s Day storm. The KIRN ROTI values in the aurora region appear to be generally much higher than the CHUK ROTI values in the EIA region. The CHUK ROTI values increased to ~0.5 TECU/min around UT=13:00 (LT=23:00) on March 16 in the quiet geomagnetic condition. On March 17, 2015, CHUK ROTI values more than 1.0 TECU/min were measured between UT=9:00 and 12:00 (LT=19:00 and 22:00) during the first main phase of the St. Patrick’s Day storm. This may be due to ionospheric irregularities by increased pre-reversal enhancement (PRE) after sunset during the geomagnetic storm. Post-midnight, the CHUK ROTI showed two peaks of ~0.5 TECU/min and ~0.3 TECU/min near UT=15:00 (LT=01:00) and UT=18:00 (LT=04:00) at the second main phase. The KIRN site showed significant peaks of ROTI around geomagnetic latitude=63.3° N and MLT=15:40 on the same day. These can be explained by enhanced ionospheric irregularities in the auroral oval at the maximum of AE index |
format |
Article in Journal/Newspaper |
author |
Jong-Kyun Chung Junseok Hong Sung-Moon Yoo Jeong-Han Kim Geonhwa Jee Valery V. Hegai |
author_facet |
Jong-Kyun Chung Junseok Hong Sung-Moon Yoo Jeong-Han Kim Geonhwa Jee Valery V. Hegai |
author_sort |
Jong-Kyun Chung |
title |
GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm |
title_short |
GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm |
title_full |
GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm |
title_fullStr |
GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm |
title_full_unstemmed |
GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm |
title_sort |
gps tec fluctuations in the low and high latitudes during the 2015 st. patrick`s day storm |
publisher |
Korean Space Science Society (KSSS) |
publishDate |
2017 |
url |
https://doi.org/10.5140/JASS.2017.34.4.245 https://doaj.org/article/6f45c10f91b448ce88f3086e9e02486a |
long_lat |
ENVELOPE(7.755,7.755,63.024,63.024) |
geographic |
Eia Kiruna |
geographic_facet |
Eia Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
Journal of Astronomy and Space Sciences, Vol 34, Iss 4, Pp 245-250 (2017) |
op_relation |
http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2017/v34n4/OJOOBS_2017_v34n4_245.pdf https://doaj.org/toc/2093-5587 https://doaj.org/toc/2093-1409 doi:10.5140/JASS.2017.34.4.245 2093-5587 2093-1409 https://doaj.org/article/6f45c10f91b448ce88f3086e9e02486a |
op_doi |
https://doi.org/10.5140/JASS.2017.34.4.245 |
_version_ |
1766058389739143168 |