Low-altitude magnetic field measurements by MESSENGER reveal Mercury’s ancient crustal field
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- Catherine L. Johnson
- Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
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- Roger J. Phillips
- Planetary Science Directorate, Southwest Research Institute, Boulder, CO 80302, USA.
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- Michael E. Purucker
- NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Brian J. Anderson
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.
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- Paul K. Byrne
- Lunar and Planetary Institute, Houston, TX 77058, USA.
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- Brett W. Denevi
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.
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- Joshua M. Feinberg
- Institute for Rock Magnetism, Department of Earth Sciences, University of Minnesota, Minneapolis, MN, 55455, USA.
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- Steven A. Hauck
- Department of Earth, Environmental, and Planetary Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA.
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- James W. Head
- Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI 02912, USA.
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- Haje Korth
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.
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- Peter B. James
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA.
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- Erwan Mazarico
- NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Gregory A. Neumann
- NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Lydia C. Philpott
- Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
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- Matthew A. Siegler
- Planetary Science Institute, Tucson, AZ 85719, USA.
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- Nikolai A. Tsyganenko
- Institute and Faculty of Physics, Saint Petersburg State University, Saint Petersburg, Russia.
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- Sean C. Solomon
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA.
書誌事項
- 公開日
- 2015-05-22
- DOI
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- 10.1126/science.aaa8720
- 公開者
- American Association for the Advancement of Science (AAAS)
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説明
<jats:title>Old minerals expose an ancient field</jats:title> <jats:p> Mercury is the only terrestrial planet other than Earth with an active, internally generated magnetic field. Results from the MESSENGER spacecraft indicate that the field is almost as old as the planet. Johnson <jats:italic>et al.</jats:italic> took advantage of close flybys to extract evidence of an ancient magnetic field. Certain minerals are able to “lock in” the signature of a field at the time they crystallize. This remnant magnetization was found in a region on Mercury believed to be 3.8 billion years old. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6237" page="892" related-article-type="in-this-issue" vol="348" xlink:href="10.1126/science.aaa8720">892</jats:related-article> </jats:p>
収録刊行物
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- Science
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Science 348 (6237), 892-895, 2015-05-22
American Association for the Advancement of Science (AAAS)
