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| Titel |
Geophysical measurements during the Novara vessel world circumnavigation from 1857 to 1859 |
| VerfasserIn |
Bruno P. Besser, Hans-Ulrich Eichelberger, Manfred Stachel, Sabrina Meindlhumer, Thomas Stachel, Konrad Schwingenschuh |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250112233
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| Publikation (Nr.) |
 EGU/EGU2015-12385.pdf |
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| Zusammenfassung |
| A world circumnavigation of the Austrian-Hungarian Navy with the frigate Novara under the
command of Commodore Bernhard Wüllerstorf-Urbair took place from April 1857 to August
1859. The Imperial Academy of Sciences Vienna (now Austrian Academy of Sciences) acted
as its scientific advisory board. The formulation of the main geoscientific goals were laid out
by the late Alexander von Humboldt.
Among the various scientific goals in a broad range of disciplines, the geomagnetic
measurements conducted by the scientists onboard were supposed to increase significantly
the knowledge of geomagnetism 20 years after the foundation of the "Göttinger Magnetischer
Verein". The main magnetic field instrument was a Lamont theodolite, calibrated at the
Central Institute for Meteorology and Geomagnetism Vienna. Due to instrumental difficulties
some of the field measurements demanded further corrections during and after the cruise.
Nevertheless, the magnetic field values at 17 land-based locations and additional
measurements (declination only) onboard the Novara on open sea could be derived. These
measurements improved the knowledge of the terrestrial magnetic field and its
variations substantially because at this time there were no magnetic observatories
operational south of the equator. Additionally regular measurements of the sea
surface temperature along the ship route were performed, published but not intensely
analyzed.
We show, analyze and discuss some examples of the geomagnetic and sea surface
temperature measurements made, especially crossing the southern pacific, and compare them
with present-day data from satellite observations. |
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