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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ANGEOD</journal-id>
<journal-title-group>
<journal-title>Annales Geophysicae Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">ANGEOD</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Ann. Geophys. Discuss.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2568-6402</issn>
<publisher><publisher-name></publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/angeo-2019-11</article-id>
<title-group>
<article-title>Decrease of total electron content during the 9 March 2016 total solar eclipse observed at low latitude stations, Indonesia</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Srigutomo</surname>
<given-names>Wahyu</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Singarimbun</surname>
<given-names>Alamta</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Meutia</surname>
<given-names>Winda</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Djaja</surname>
<given-names>I Gede Putu Fadjar Soerya</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Muslim</surname>
<given-names>Buldan</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Abadi</surname>
<given-names>Prayitno</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Physics of Earth and Complex System, Physics Dept., Fac. of Mathematics and Natural Sciences, InstitutTeknologi Bandung, Jl. Ganesa 10, Bandung 40132, Indonesia</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Indonesian National Institute of Aeronautics and Space (LAPAN),  Jl. Dr. Djunjunan No.133, Bandung 40173, Indonesia</addr-line>
</aff>
<pub-date pub-type="epub">
<day>24</day>
<month>01</month>
<year>2019</year>
</pub-date>
<volume>2019</volume>
<fpage>1</fpage>
<lpage>12</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2019 Wahyu Srigutomo et al.</copyright-statement>
<copyright-year>2019</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://angeo.copernicus.org/preprints/angeo-2019-11/">This article is available from https://angeo.copernicus.org/preprints/angeo-2019-11/</self-uri>
<self-uri xlink:href="https://angeo.copernicus.org/preprints/angeo-2019-11/angeo-2019-11.pdf">The full text article is available as a PDF file from https://angeo.copernicus.org/preprints/angeo-2019-11/angeo-2019-11.pdf</self-uri>
<abstract>
<p>&lt;p&gt;The total solar eclipse on 9 March 2016 was a rare phenomenon that could be observed in 12 provinces in Indonesia. The decline in solar radiation to the earth during a total solar eclipse affects the amount of electron content (TEC) in the ionosphere. The ionospheric dynamics during the eclipse above Indonesia have been studied using data from 40 GPS stations distributed throughout the archipelago. It was observed that TEC decrease occurred over Indonesia during the occurrence of the total eclipse. This TEC decrease did not instigate ionoshperic scintillation. Moreover, the relationship between eclipse magnitude and TEC decrease throughout three GPS stations was analysed using PRN 24 and PRN 12 codes. Data analysis from each station reveals that the time required by the TEC to achieve maximum reduction since the initial contact of the eclipse is faster than the recovery time. The maximum TEC reduction came about several minutes after the maximum obscuration indicating that the recombination process was still ongoing even though the peak of the eclipse had happened. The magnitude of this decline is positively correlated with the geographical location of the stations and the relative satellite trajectory with respect to the total solar eclipse trajectory. The amount of TEC reduction is proportional to the magnitude of the eclipse which is directly related to the photoionization process. Because Indonesia is located in a low latitude magnetic equator region, the dynamics of the ionosphere above it is more complex due to the fountain effect. During the solar eclipse, the fountain effect declines disturbing the plasma transport from the magnetic equator to low latitude regions.&lt;/p&gt;</p>
</abstract>
<counts><page-count count="12"/></counts>
</article-meta>
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