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Relationship between TEC jumps and auroral substorm in the high-latitude ionosphere.

Abstract：

:The influence of an auroral substorm on the total electron content (TEC) jumps and cycle slips on Global Positioning System (GPS) at high-latitudes is studied. For the first time, optical data from the all-sky imager, as well as interplanetary magnetic field and magnetometer data are used to complete the analysis of the slips occurrence and to monitor the substorm evolution. Two types of slips are considered: (i) instrumental slips including losses in the measured phase of the GPS signal and (ii) sharp TEC variations (TEC jumps) It is demonstrated that the jumps in TEC determined from the GPS signals are mainly related to the auroral particle precipitation that normally occurs during geomagnetic substorms in the polar ionosphere. The GPS frequency [Formula: see text] is consistently subject to more slips than frequency [Formula: see text] both for quiet and disturbed conditions. The probability of TEC jumps is higher than for cycle slips in phase at frequencies [Formula: see text] and [Formula: see text]. The maximum of TEC jumps is observed during the recovery phase of the auroral substorm. Our findings are based on a data set obtained for a particular event. A generalization of the obtained numerical estimates to other events requires additional research and further analysis.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Chernyshov AA,Miloch WJ,Jin Y,Zakharov VI

doi

10.1038/s41598-020-63422-9

subject

Has Abstract

pub_date

2020-04-14 00:00:00

pages

6363

issue

1

issn

2045-2322

pii

10.1038/s41598-020-63422-9

journal_volume

10

pub_type

杂志文章

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