{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360021390563033728.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1186/s40623-023-01877-6"}},{"identifier":{"@type":"URI","@value":"https://link.springer.com/content/pdf/10.1186/s40623-023-01877-6.pdf"}},{"identifier":{"@type":"URI","@value":"https://link.springer.com/article/10.1186/s40623-023-01877-6/fulltext.html"}},{"identifier":{"@type":"DOI","@value":"10.60692/z4yy6-n3976"}},{"identifier":{"@type":"DOI","@value":"10.60692/2n7dn-tja41"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Simultaneous equatorial plasma bubble observation using amplitude scintillations from GNSS and LEO satellites in low-latitude region"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>This study estimates the scale sizes of the plasma density irregularities and the longitudinal width associated with equatorial plasma bubbles (EPBs) in equatorial and low-latitude regions. By analyzing amplitude scintillation S<jats:sub>4</jats:sub> indices and total electron content (TEC) measured from low earth orbit (LEO) satellite’s beacon signals with 400 MHz and Global Navigation Satellite System (GNSS) L1/E1 signals with 1575.42 MHz, recorded by receivers at the KMITL station in Bangkok, Thailand (geographic; 13.73° N, 100.77°E, magnetic: 7.26°N), we investigate the characteristics of these irregularities. We collected data of 154 LEO satellite pass events during nighttime on 21 disturbed days in four equinoctial months in 2021. Based on the presence or absence of the scintillation effects on GNSS and LEO beacon signals, the events are categorized into four classes to estimate the scale size of the plasma density irregularities. The analysis suggests that events with both GNSS and LEO scintillations, as well as events with GNSS scintillation alone, occur predominantly before midnight assuming the presence of the small-scale size of the irregularities within EPB. However, events with only LEO scintillation occur throughout the whole night and some events are observed before the events with both GNSS and LEO scintillations. Post-sunset LEO scintillation alone may be attributed to the onset of EPBs developing at low altitude, while post-midnight LEO scintillation events near the magnetic equator, observed during periods of low GNSS Rate of TEC Index (ROTI) values, are associated with bottom-side ionospheric irregularities but are not linked with EPB. The findings are consistent with previous researches on the generation and decay of electron density irregularities within plasma bubbles. However, this study provides new insights by using specific data sets and analysis techniques, offering a more comprehensive understanding of the association of LEO scintillations with bottom-side ionospheric irregularities near the magnetic equator, not observed in the ROTI map.</jats:p>\n                <jats:p><jats:bold>Graphical Abstract</jats:bold></jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380021390563033603","@type":"Researcher","foaf:name":[{"@value":"Khanitin Seechai"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390563033735","@type":"Researcher","foaf:name":[{"@value":"Lin Min Min Myint"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276182411392","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10856082"},{"@type":"NRID","@value":"1000010856082"}],"foaf:name":[{"@value":"Kornyanat Hozumi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390563033738","@type":"Researcher","foaf:name":[{"@value":"Michi Nishioka"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390563033728","@type":"Researcher","foaf:name":[{"@value":"Susumu Saito"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390563033734","@type":"Researcher","foaf:name":[{"@value":"Mamoru Yamamoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390563033605","@type":"Researcher","foaf:name":[{"@value":"Pornchai Supnithi"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"18805981"}],"prism:publicationName":[{"@value":"Earth, Planets and Space"}],"dc:publisher":[{"@value":"Springer Science and Business Media LLC"}],"prism:publicationDate":"2023-08-23","prism:volume":"75","prism:number":"1","prism:startingPage":"127"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0","https://creativecommons.org/licenses/by/4.0"],"url":[{"@id":"https://link.springer.com/content/pdf/10.1186/s40623-023-01877-6.pdf"},{"@id":"https://link.springer.com/article/10.1186/s40623-023-01877-6/fulltext.html"}],"createdAt":"2023-08-23","modifiedAt":"2023-11-21","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Global%20Navigation%20Satellite%20System","dc:title":"Global Navigation Satellite System"},{"@id":"https://cir.nii.ac.jp/all?q=Interplanetary%20scintillation","dc:title":"Interplanetary scintillation"},{"@id":"https://cir.nii.ac.jp/all?q=Space%20weather","dc:title":"Space weather"},{"@id":"https://cir.nii.ac.jp/all?q=Equator","dc:title":"Equator"},{"@id":"https://cir.nii.ac.jp/all?q=Midnight","dc:title":"Midnight"},{"@id":"https://cir.nii.ac.jp/all?q=Astronomy","dc:title":"Astronomy"},{"@id":"https://cir.nii.ac.jp/all?q=Solar%20wind","dc:title":"Solar wind"},{"@id":"https://cir.nii.ac.jp/all?q=Equatorial%20plasma%20bubble","dc:title":"Equatorial plasma bubble"},{"@id":"https://cir.nii.ac.jp/all?q=Aerospace%20Engineering","dc:title":"Aerospace Engineering"},{"@id":"https://cir.nii.ac.jp/all?q=FOS:%20Mechanical%20engineering","dc:title":"FOS: Mechanical engineering"},{"@id":"https://cir.nii.ac.jp/all?q=Ionospheric%20irregularity","dc:title":"Ionospheric irregularity"},{"@id":"https://cir.nii.ac.jp/all?q=Oceanography","dc:title":"Oceanography"},{"@id":"https://cir.nii.ac.jp/all?q=Quantum%20mechanics","dc:title":"Quantum mechanics"},{"@id":"https://cir.nii.ac.jp/all?q=Environmental%20science","dc:title":"Environmental science"},{"@id":"https://cir.nii.ac.jp/all?q=G","dc:title":"G"},{"@id":"https://cir.nii.ac.jp/all?q=Plasma","dc:title":"Plasma"},{"@id":"https://cir.nii.ac.jp/all?q=Engineering","dc:title":"Engineering"},{"@id":"https://cir.nii.ac.jp/all?q=Global%20Navigation%20Satellite%20Systems%20(GNSS)","dc:title":"Global Navigation Satellite Systems (GNSS)"},{"@id":"https://cir.nii.ac.jp/all?q=Geography.%20Anthropology.%20Recreation","dc:title":"Geography. Anthropology. Recreation"},{"@id":"https://cir.nii.ac.jp/all?q=Ionosphere","dc:title":"Ionosphere"},{"@id":"https://cir.nii.ac.jp/all?q=Global%20Sea%20Level%20Variability%20and%20Change","dc:title":"Global Sea Level Variability and Change"},{"@id":"https://cir.nii.ac.jp/all?q=Scintillation","dc:title":"Scintillation"},{"@id":"https://cir.nii.ac.jp/all?q=QB275-343","dc:title":"QB275-343"},{"@id":"https://cir.nii.ac.jp/all?q=QE1-996.5","dc:title":"QE1-996.5"},{"@id":"https://cir.nii.ac.jp/all?q=Sunset","dc:title":"Sunset"},{"@id":"https://cir.nii.ac.jp/all?q=Latitude","dc:title":"Latitude"},{"@id":"https://cir.nii.ac.jp/all?q=Physics","dc:title":"Physics"},{"@id":"https://cir.nii.ac.jp/all?q=Astronomy%20and%20Astrophysics","dc:title":"Astronomy and Astrophysics"},{"@id":"https://cir.nii.ac.jp/all?q=Geology","dc:title":"Geology"},{"@id":"https://cir.nii.ac.jp/all?q=Optics","dc:title":"Optics"},{"@id":"https://cir.nii.ac.jp/all?q=Detector","dc:title":"Detector"},{"@id":"https://cir.nii.ac.jp/all?q=FOS:%20Earth%20and%20related%20environmental%20sciences","dc:title":"FOS: Earth and related environmental sciences"},{"@id":"https://cir.nii.ac.jp/all?q=Remote%20sensing","dc:title":"Remote sensing"},{"@id":"https://cir.nii.ac.jp/all?q=TEC","dc:title":"TEC"},{"@id":"https://cir.nii.ac.jp/all?q=satellite%20measurements","dc:title":"satellite measurements"},{"@id":"https://cir.nii.ac.jp/all?q=Low%20earth%20orbit%20satellites","dc:title":"Low earth orbit satellites"},{"@id":"https://cir.nii.ac.jp/all?q=Earth%20and%20Planetary%20Sciences","dc:title":"Earth and Planetary Sciences"},{"@id":"https://cir.nii.ac.jp/all?q=Defense%20Meteorological%20Satellite%20Program","dc:title":"Defense Meteorological Satellite Program"},{"@id":"https://cir.nii.ac.jp/all?q=Total%20electron%20content","dc:title":"Total electron content"},{"@id":"https://cir.nii.ac.jp/all?q=Space%20Weather%20and%20Magnetospheric%20Physics","dc:title":"Space Weather and Magnetospheric Physics"},{"@id":"https://cir.nii.ac.jp/all?q=Geophysics","dc:title":"Geophysics"},{"@id":"https://cir.nii.ac.jp/all?q=Physics%20and%20Astronomy","dc:title":"Physics and Astronomy"},{"@id":"https://cir.nii.ac.jp/all?q=Satellite","dc:title":"Satellite"},{"@id":"https://cir.nii.ac.jp/all?q=GNSS%20applications","dc:title":"GNSS applications"},{"@id":"https://cir.nii.ac.jp/all?q=Physical%20Sciences","dc:title":"Physical Sciences"},{"@id":"https://cir.nii.ac.jp/all?q=Coronal%20mass%20ejection","dc:title":"Coronal mass ejection"},{"@id":"https://cir.nii.ac.jp/all?q=Geodesy","dc:title":"Geodesy"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040848250647691776","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"20H00197"},{"@type":"JGN","@value":"JP20H00197"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H00197/"}],"notation":[{"@language":"ja","@value":"レーダー観測網・複数衛星・モデル計算を総合した赤道域電離圏変動特性の国際共同研究"},{"@language":"en","@value":"International study of equatorial ionosphere based on observations and models"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001335818841472","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Latitudinal GRBR-TEC estimation in Southeast Asia region based on the two-station method"},{"@value":"Latitudinal GRBR‐TEC estimation in Southeast Asia region based on the two‐station method"}]},{"@id":"https://cir.nii.ac.jp/crid/1360001114030938880","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Continuous generation and two‐dimensional structure of equatorial plasma bubbles observed by high‐density GPS receivers in Southeast Asia"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004229802318720","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Nonlinear growth, bifurcation, and pinching of equatorial plasma bubble simulated by three‐dimensional high‐resolution bubble model"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011144213424384","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Digital beacon receiver for ionospheric TEC measurement developed with GNU Radio"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011144437604352","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Correlation between ROTI and Ionospheric Scintillation Indices using Hong Kong low-latitude GPS data"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021391856319872","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"A study of equatorial plasma bubble structure using VHF radar and GNSS scintillations over the low-latitude regions"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021393714007296","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Nighttime equatorial ionosphere: GPS scintillations and differential carrier phase fluctuations"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021395478458880","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"ANALYSIS OF CORRELATION BETWEEN ROTI AND S4 USING GAGAN DATA"}]},{"@id":"https://cir.nii.ac.jp/crid/1360298757412383488","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Challenges to Equatorial Plasma Bubble and Ionospheric Scintillation Short-Term Forecasting and Future Aspects in East and Southeast Asia"}]},{"@id":"https://cir.nii.ac.jp/crid/1360302871121584768","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The observations of localize ionospheric scintillation structure by FORMOSAT-7/COSMIC-2 Tri-band Beacon network"}]},{"@id":"https://cir.nii.ac.jp/crid/1360302871122333184","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Comparison study of amplitude scintillation between GNSS and satellite beacon receivers in Thailand"}]},{"@id":"https://cir.nii.ac.jp/crid/1360306906069609856","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Advanced detection methods and machine learning analysis of temporal and spatial patterns of equatorial plasma bubble depth"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567179757649408","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Predawn plasma bubble cluster observed in Southeast Asia"}]},{"@id":"https://cir.nii.ac.jp/crid/1360568468126659200","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Investigation of Spatiotemporal Morphology of Plasma Bubbles Based on EAR Observations"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574094933854976","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Radio wave scintillations in the ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584343496861056","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Equatorial Plasma Bubbles: A Review"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584343745444480","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Analysis of the Characteristics of Low-Latitude GPS Amplitude Scintillation Measured During Solar Maximum Conditions and Implications for Receiver Performance"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584343745445632","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Investigating Ionospheric Scintillation Effects on Multifrequency GPS Signals"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346081915136","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Disentangling ionospheric refraction and diffraction effects in GNSS raw phase through fast iterative filtering technique"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848665119505024","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Low-latitude scintillation occurrences around the equatorial anomaly crest over Indonesia"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865819397594624","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"A Comparison and Analysis of the <i>S</i><sub>4</sub> Index, C/N and Roti over Sanya"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865819399710208","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The Observation of Ionospheric Large-Scale Wave Structure In Southeast Asia"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865821057393664","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Carrier phase bias estimation of geometry-free linear combination of GNSS signals for ionospheric TEC modeling"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981469235325312","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The variability of low‐latitude ionospheric amplitude and phase scintillation detected by a triple‐frequency GPS receiver"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544419933533568","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Study of spatial and temporal characteristics of L-band scintillations over the Indian low-latitude region and their possible effects on GPS navigation"}]},{"@id":"https://cir.nii.ac.jp/crid/1363107371137864448","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Equatorial scintillation and systems support"}]},{"@id":"https://cir.nii.ac.jp/crid/1363670321131149184","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"VHF radar observations of nighttime F-region field-aligned irregularities over Kototabang, Indonesia"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233269802479488","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Monitoring of global ionospheric irregularities using the Worldwide GPS Network"}]},{"@id":"https://cir.nii.ac.jp/crid/2050870367065763072","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Review of the generation mechanisms of post-midnight irregularities in the equatorial and low-latitude ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/2051996267026445056","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Upwelling : a unit of disturbance in equatorial spread F"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1186/s40623-023-01877-6"},{"@type":"KAKEN","@value":"PRODUCT-25348730"},{"@type":"OPENAIRE","@value":"doi_dedup___::622879f7a9cba188e07dd708297e7d2a"},{"@type":"CROSSREF","@value":"10.1016/j.jastp.2025.106495_references_DOI_5Zua0c2O696jZAtwb7cu8BtyGM2"}]}