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          <full_title>Geoscientific Instrumentation, Methods and Data Systems</full_title>
          <abbrev_title>Geosci. Instrum. Method. Data Syst.</abbrev_title>
          <issn media_type="electronic">2193-0864</issn>
        </journal_metadata>
        <journal_issue>
          <publication_date media_type="online">
            <year>2017</year>
          </publication_date>
          <journal_volume>
            <volume>6</volume>
          </journal_volume>
          <issue>2</issue>
        </journal_issue>
        <journal_article publication_type="full_text">
          <titles>
            <title>A low-power data acquisition system for geomagnetic observatories and variometer stations</title>
          </titles>
          <contributors>
            <person_name sequence="first" contributor_role="author">
              <given_name>Achim</given_name>
              <surname>Morschhauser</surname>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Jürgen</given_name>
              <surname>Haseloff</surname>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Oliver</given_name>
              <surname>Bronkalla</surname>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Carsten</given_name>
              <surname>Müller-Brettschneider</surname>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Jürgen</given_name>
              <surname>Matzka</surname>
              <ORCID>https://orcid.org/0000-0001-9926-2796</ORCID>
            </person_name>
          </contributors>
          <abstract>
            <p><![CDATA[Abstract. A modern geomagnetic observatory must provide data of high stability, continuity, and resolution. The INTERMAGNET network has therefore specified quantitative criteria to ensure a high quality standard of geomagnetic observatories. Here, we present a new data acquisition system which was designed to meet these criteria, in particular with respect to 1 Hz data. This system is based on a Raspberry Pi embedded PC and runs a C+ +  data acquisition software. As a result, the data acquisition system is modular, cheap, and flexible, and it can be operated in remote areas with limited power supply. In addition, the system is capable of near-real-time data transmission, using a reverse SSH tunnel to work with any network available. The system hardware was successfully tested at the Niemegk observatory for a period of 1 year and subsequently installed at the Tatuoca observatory in Brazil.]]></p>
          </abstract>
          <publication_date media_type="online">
            <month>09</month>
            <day>20</day>
            <year>2017</year>
          </publication_date>
          <pages>
            <first_page>345</first_page>
            <last_page>352</last_page>
          </pages>
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            <free_to_read start_date="2017-09-20" />
            <license_ref applies_to="vor" start_date="2017-09-20">https://creativecommons.org/licenses/by/3.0/</license_ref>
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