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Insights from the correlation of the preliminary Geologic and Mineralogic maps of Vesta from the Dawn mission data

Frigeri, A. und De Sanctis, M.C. und Ammannito, E. und Yingst, R. Aileen und Mest, S. und Garry, W.B. und Magni, G. und Palomba, E. und Petro, N.E. und Tosi, F. und Williams, D.A. und Zambon, F. und Jaumann, R. und Pieters, C. und Raymond, C.A. und Russell, C.T. (2012) Insights from the correlation of the preliminary Geologic and Mineralogic maps of Vesta from the Dawn mission data. In: Copernicus. EGU 2012, 2012-04-22 - 2012-04-27, Wien, Österreich.

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Kurzfassung

The Dawn mission to Vesta has greatly improved the quality and resolution of data available to explore the asteroid. Prior to the Dawn mission the best data available was the one from Hubble Space Telescope with a maximum resolution of 50 km per pixel. The survey phase of the mission has pushed spatial resolution up to about 100 meters per pixel by the Framing Camera on-board Dawn, and 700 meters per pixel for the VIR spectrometer, spanning the spectral range from the visible to infrared at 0.25-1 μm and 1-5 μm. The frames of the FC and VIR have been processed and mosaicked. A preliminary Geologic map has been produced by mapping units and structures over the FC mosaic and the DTM derived from stereo processing of visible imagery. We will present some examples of correlation between the preliminary geologic and VIR-derived mineralogic maps. The Dawn mission team is using Geographic Information System tools for locating frames and for data exchange among the team. The use of GIS tools and data formats significantly improves our ability to create and interpret geologic maps, and also improves the interoperability of high level data products among the instruments' team. VIR data have been synthesized into a series of spectral indicators that give indications on the mineralogical composition and the physical state of the surface. We ingested in GIS the the preliminary geologic map as units and structures and we projected the mosaics of spectral indicators in a common coordinate reference system. The first spectral indicators we started to look at were the Band Depth computed on pyroxene Band II and the Band Center also computed on Band II. The comparison of the preliminary geologic map and the mosaics of spectral indicators extracted from VIR data show promising aspects on both the geologic and mineralogic aspects. Geologic units are made up of bodies of rock that are interpreted to have been formed by a particular process or set of related processes over a discrete interval of time, so the morphology and the topography are the primary sources for the crafting of a geologic map. Mineralogy as interpreted from spectroscopy provides unique information in interpreting unit boundaries and the processes that formed those units. In particular, spectral indicators synthesize the complex methods of data reduction, making mineralogic measurements accessible to non-spectroscopists. This way, within a digital mapping context in GIS, including the spectral indicators in the stack of imagery and topographic layers enriches the observation possibilities of the geologic mapper. However, caution must be used to ensure that surface mineralogic expression are not misinterpreted as geologic units, and only the combined effort of geologic mappers and spectroscopists will develop good practices in the use of spectral indicators. We believe that the combined observation of image mosaics, topography and mineralogic parameters will greatly improve the interpretative process of geologic mapping and thus the quality of the next series of forthcoming geologic maps of Vesta. The authors gratefully acknowledge the support of the Dawn Instrument, Operations, and Science Teams. This work is supported by an Italian Space Agency (ASI) grant and by NASA through the Dawn project and a Dawn at Vesta Participating Scientist grant.

elib-URL des Eintrags:https://elib.dlr.de/80585/
Dokumentart:Konferenzbeitrag (NICHT SPEZIFIZIERT)
Titel:Insights from the correlation of the preliminary Geologic and Mineralogic maps of Vesta from the Dawn mission data
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Frigeri, A.National Institute of Astrophysics, Rome, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
De Sanctis, M.C.Istituto Nazionale di Astrofisica, Rome, Italy.NICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ammannito, E.INAF, Istituto di Fisica Dello Spazio Interplanetario, Roma, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Yingst, R. AileenPlanetary Science Institute, Tucson, AZ, United States.NICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Mest, S.Planetary Science Institute, 1700 E. Ft. Lowell, Suite 106, Tucson, AZ, 85719, USANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Garry, W.B.PSI, Tucson, AZ, United States.NICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Magni, G.INAF/Instituto di Astrofisica Spaziale e Fisica Cosmica, Rome, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Palomba, E.Institute for Interplanetary Space Physics - INAF, Rome, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Petro, N.E.NASA Goddard Space Flight Center, Greenbelt, MD, United States.NICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Tosi, F.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Williams, D.A.Arizona State UniversityNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Zambon, F.INAF-IAPS, Via del Fosso del Cavaliere 100, I-00133 Rome, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Jaumann, R.ralf.jaumann (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Pieters, C.Brown University, Providence, RI, USANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Raymond, C.A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Russell, C.T.Institute of Geophysics, University of California, Los Angeles, Los Angeles, CA 90095NICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:April 2012
Erschienen in:Copernicus
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Vesta, Dawn, Mineralogy, Geology
Veranstaltungstitel:EGU 2012
Veranstaltungsort:Wien, Österreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:22 April 2012
Veranstaltungsende:27 April 2012
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erforschung des Weltraums
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):R - Projekt DAWN (alt)
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Planetengeologie
Hinterlegt von: Aydin, Zeynep
Hinterlegt am:14 Jan 2013 06:57
Letzte Änderung:24 Apr 2024 19:47

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