Statistical study of the GNSS phase scintillation associated with two types of auroral blobs

Jin, Yaqi; Moen, J.; Miloch, W. J.; Clausen, L. B. N.; Oksavik, K.

doi:10.1002/2016ja022613

Cited by 58 publications

(83 citation statements)

References 71 publications

(107 reference statements)

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“…At high latitudes, the scintillation effect on Global Positioning System (GPS) signals has been associated with phenomena like storm‐enhanced density, polar cap patches, and auroral precipitation (Alfonsi et al, ; De Franceschi et al, ; Jin et al, , ; Jin, Moen, et al, ; Li et al, ; Mitchell et al, ; Moen et al, ; Oksavik et al, ; Prikryl et al, , , ; Smith et al, ; Spogli et al, ; van der Meeren et al, , , ). The strongest GPS phase scintillations are associated with auroral blobs that are formed when polar cap patches enter the nightside auroral region (Jin et al, ; Jin, Moen, et al, ; van der Meeren et al, ). Similar results have been reported in the dayside cusp ionosphere, where the polar cap patches combined with the cusp auroral dynamics are associated with the strongest GPS phase scintillation (Jin et al, , ; Oksavik et al, ).…”

Section: Introductionmentioning

confidence: 99%

GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm

Jin

Oksavik

2018

JGR Space Physics

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We investigate the Global Positioning System (GPS) amplitude and phase scintillations during a severe geomagnetic storm on 17 March 2015. The auroral oval expanded significantly due to a strongly southward interplanetary magnetic field (Bz was −25 nT). When the auroral oval was over Skibotn in northern Norway, significant enhancements in total electron content (TEC) fluctuations, amplitude, and phase scintillation were observed. The strongest amplitude and phase scintillations were observed when a TEC blob propagated across the field of view. Strong amplitude and phase scintillations were observed near the edges of the TEC blob. The European Incoherent SCATter ultrahigh frequency radar observed significant enhancement of electron density (from 0.8 × 1011 to 1.6 × 1011 m−3) near the edge of the TEC blob in the F2 region, while the E region was only slightly enhanced. This indicates that the plasma processes and instability modes, which accounted for the strong GPS scintillations, should involve the F2 region ionosphere. We also analyzed the tracking performance of the GPS receiver during strong ionospheric scintillation condition. While the receiver maintained tracking of the GPS L1 signal, the strong amplitude scintillation resulted in a power fade up to 12 dB‐Hz. Losses of lock occurred in the GPS L2 band. Both the power fade and rapid phase fluctuation should contribute to losses of lock.

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Section: Introductionmentioning

confidence: 99%

GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm

Jin

Oksavik

2018

JGR Space Physics

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“…Due to the frequent intrusion of particles and energy from solar wind through the interplanetary magnetic field (IMF), large number of high-density structures are often generated in this region. In technological applications, the large-scale plasma irregularities often degrade the applications of Global Navigation Satellite System especially when combined with simultaneous particle precipitation (e.g., Jin et al, 2014Jin et al, , 2016Moen et al, 2013;Oksavik et al, 2015). SED is a plume of very high density plasma around the noon sector.…”

Section: Introductionmentioning

confidence: 99%

Polar Ionospheric Large‐Scale Structures and Dynamics Revealed by TEC Keogram Extracted From TEC Maps

Wang

Zhang

et al. 2020

JGR Space Physics

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A method named total electron content (TEC) keogram is introduced for surveying the large-scale irregularities continuously in the polar ionosphere. The TEC keogram is developed from a movie of TEC maps along various meridian lines from the dayside to the nightside across the magnetic pole, trying to identify and track several types of ionospheric structures. Through two examples, a clear train of polar cap patches are identified from TEC keogram and confirmed by SuperDARN radar observations. The motion speed of these patches estimated from this tool agrees with SuperDARN radar measurements. Then, the motions of patches relative to the background convection through the whole polar cap are statistically studied for the first time. Moreover, the occurrence dependence of fully tracked patches on months, UT hours, and interplanetary magnetic field conditions is generally consistent with previous reports. These results suggest that the TEC keogram offers a power tool for continuous monitoring and studying of large-scale plasma irregularities in the polar ionosphere.

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“…Still the long time duration (3-5 h) auroral emissions neither were studied nor characterized based on their boundary movement. Many researchers have attempted ionospheric scintillation associate to the dayside as well as nighside auroral emission (e.g., Jin et al, 2015Jin et al, , 2016Jin et al, , 2017Oksavik et al, 2015;Prikryl et al, 2015;van der Meeren et al, 2015) but, the ionospheric scintillation response on the GNSS signal caused at the poleward as well as equatorward edge of the auroral emission boundary is poorly understood. Feldstein and Galperin (1985), Lyons et al (2000), Zesta et al (2002); and references therein; have discussed the structure of the auroral emission in really great details.…”

Section: Introductionmentioning

confidence: 99%

“…Recent Ionospheric scintillation studies associated to the aurora in Arctic and Antarctica can be summarized as follows. Jin et al (2016) studied the scintillation associated with the different types of the auroral blobs and found that the scintillation caused due to the blobs is more severe than the polar cap patches. Ionospheric scintillation is mostly in the dayside noon in the auroral region (cusp region).…”

Section: Introductionmentioning

confidence: 99%

“…Further, recent research studies related to the auroral emission and the polar ionospheric (e.g., Crowley et al, 2000;Zhang et al, 2013aZhang et al, , 2015Jin et al, 2015Jin et al, , 2016Jin et al, , 2017Liu et al, 2015;Lyons et al, 2015;Oksavik et al, 2015;Prikryl et al, 2015;van der Meeren et al, 2015;Hosokawa et al, 2016;Baddeley et al, 2017;Chen et al, 2017 and many others) have covered many important aspects of magnetosphere-ionosphere-thermosphere coupling, such as nightside patch related aurora and poleward edge brightening of the nightside auroral oval; nightside auroral blobs and their associated scintillations; throat aurora as the precursor of PMAFs; equatorward driven auroral arcs due to the ULF waves and their energy dissipation caused due to joule/ion frictional heating etc. Still the long time duration (3-5 h) auroral emissions neither were studied nor characterized based on their boundary movement.…”

Section: Introductionmentioning

confidence: 99%

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The Behaviors of Ionospheric Scintillations Around Different Types of Nightside Auroral Boundaries Seen at the Chinese Yellow River Station, Svalbard

Priyadarshi

Zhang

et al. 2018

Front. Astron. Space Sci.

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Dynamical nightside auroral structures are often observed by the all sky imagers (ASI) at the Chinese Yellow River Station (CYRS) at Ny-Ålesund, Svalbard, located in the polar cap near poleward edge of the nightside auroral oval. The boundaries of the nightside auroral oval are stable during quiet geomagnetic conditions, while they often expand poleward and pass through the overhead area of CYRS during the substorm expansion phase. The motions of these boundaries often give rise to strong disturbances of satellite navigations and communications. Two cases of these auroral boundary motions have been introduced to investigate their associated ionospheric scintillations: one is Fixed Boundary Auroral Emissions (FBAE) with stable and fixed auroral boundaries, and another is Bouncing Boundary Auroral Emissions (BBAE) with dynamical and largely expanding auroral boundaries. Our observations show that the auroral boundaries, identified from the sharp gradient of the auroral emission intensity from the ASI images, were clearly associated with ionospheric scintillations observed by Global Navigation Satellite System (GNSS) scintillation receiver at the CYRS. However, amplitude scintillation (S 4 ) and phase scintillation (σ φ ) respond in an entirely different way in these two cases due to the different generation mechanism as well as different IMF (Interplanetary Magnetic Field) condition. S 4 and σ φ have similar levels around the FBAE, while σ φ was much stronger than S 4 around BBAE. The BBAE were associated with stronger particle precipitation during the substorm expansion phase. IU/IL, appeared to be a good indicator of the poleward moving auroral structures during the BBAE as well as FBAE.

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Statistical study of the GNSS phase scintillation associated with two types of auroral blobs

Cited by 58 publications

References 71 publications

GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm

GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm

Polar Ionospheric Large‐Scale Structures and Dynamics Revealed by TEC Keogram Extracted From TEC Maps

The Behaviors of Ionospheric Scintillations Around Different Types of Nightside Auroral Boundaries Seen at the Chinese Yellow River Station, Svalbard

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