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Solar Eclipse of February 26, 2017, Observed from the SAMBA Magnetometer Network.

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Title: Solar Eclipse of February 26, 2017, Observed from the SAMBA Magnetometer Network.
Authors: Lazzús, J. A.1 (AUTHOR) jlazzus@userena.cl, Salfate, I.1 (AUTHOR)
Source: Geomagnetism & Aeronomy. Apr2026, Vol. 66 Issue 2, p55-61. 7p.
Subject Terms: *Geomagnetic variations, *Solar eclipses, *Equatorial electrojet, *Magnetospheric physics, *Chileans
Geographic Terms: Antarctica, Chile
Abstract: A report on the geomagnetic variations observed in Chile and Antarctica during the annular solar eclipse of February 26, 2017, is presented. This eclipse was visible from southern Chile in the morning and ended in the Democratic Republic of the Congo at sunset. Using data from three SAMBA network stations positioned at different magnetic latitudes along the 0° geomagnetic longitude and around the path of annularity, we analyzed changes in the geomagnetic field's X, Y, and Z components during the eclipse. A baseline method, derived from the quietest days of the month, was applied to isolate eclipse-induced disturbances. Our analysis shows a decrease in the X component, an increase in the Y component, and a flattening of the Z component in synchrony with the eclipse. In addition, an analysis of ULF Pc3 pulsations reveals a localized attenuation of wave amplitudes during the eclipse, particularly near the umbral path. These results align with theoretical predictions and previous observations, suggesting a strong influence of the solar eclipse on the observed geomagnetic variations. The study reinforces the role of solar radiation reduction in modulating ionospheric currents and provides insights into the Earth's magnetospheric response during these events. The study provides evidence of the role of solar radiation in regulating ionospheric currents and geomagnetic field variations in response to transient solar events, particularly in the Chile-Antarctica sector. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194698292
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Solar Eclipse of February 26, 2017, Observed from the SAMBA Magnetometer Network.
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  Data: <searchLink fieldCode="JN" term="%22Geomagnetism+%26+Aeronomy%22">Geomagnetism & Aeronomy</searchLink>. Apr2026, Vol. 66 Issue 2, p55-61. 7p.
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  Data: *<searchLink fieldCode="DE" term="%22Geomagnetic+variations%22">Geomagnetic variations</searchLink><br />*<searchLink fieldCode="DE" term="%22Solar+eclipses%22">Solar eclipses</searchLink><br />*<searchLink fieldCode="DE" term="%22Equatorial+electrojet%22">Equatorial electrojet</searchLink><br />*<searchLink fieldCode="DE" term="%22Magnetospheric+physics%22">Magnetospheric physics</searchLink><br />*<searchLink fieldCode="DE" term="%22Chileans%22">Chileans</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Antarctica%22">Antarctica</searchLink><br /><searchLink fieldCode="DE" term="%22Chile%22">Chile</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A report on the geomagnetic variations observed in Chile and Antarctica during the annular solar eclipse of February 26, 2017, is presented. This eclipse was visible from southern Chile in the morning and ended in the Democratic Republic of the Congo at sunset. Using data from three SAMBA network stations positioned at different magnetic latitudes along the 0° geomagnetic longitude and around the path of annularity, we analyzed changes in the geomagnetic field's X, Y, and Z components during the eclipse. A baseline method, derived from the quietest days of the month, was applied to isolate eclipse-induced disturbances. Our analysis shows a decrease in the X component, an increase in the Y component, and a flattening of the Z component in synchrony with the eclipse. In addition, an analysis of ULF Pc3 pulsations reveals a localized attenuation of wave amplitudes during the eclipse, particularly near the umbral path. These results align with theoretical predictions and previous observations, suggesting a strong influence of the solar eclipse on the observed geomagnetic variations. The study reinforces the role of solar radiation reduction in modulating ionospheric currents and provides insights into the Earth's magnetospheric response during these events. The study provides evidence of the role of solar radiation in regulating ionospheric currents and geomagnetic field variations in response to transient solar events, particularly in the Chile-Antarctica sector. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194698292
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1134/S0016793225600031
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 7
        StartPage: 55
    Subjects:
      – SubjectFull: Geomagnetic variations
        Type: general
      – SubjectFull: Solar eclipses
        Type: general
      – SubjectFull: Equatorial electrojet
        Type: general
      – SubjectFull: Magnetospheric physics
        Type: general
      – SubjectFull: Chileans
        Type: general
      – SubjectFull: Antarctica
        Type: general
      – SubjectFull: Chile
        Type: general
    Titles:
      – TitleFull: Solar Eclipse of February 26, 2017, Observed from the SAMBA Magnetometer Network.
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            NameFull: Lazzús, J. A.
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            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 66
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            – TitleFull: Geomagnetism & Aeronomy
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