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An extended global Inventory of Mars Surface Faults

Knapmeyer, M. und Schneider, S. und Misun, M. und Wählisch, M. und Hauber, E. (2008) An extended global Inventory of Mars Surface Faults. European Geosciences Union - General Assembly, 2008-04-13 - 2008-04-18, Vienna (Austria).

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Offizielle URL: http://www.cosis.net/abstracts/EGU2008/03574/EGU2008-A-03574.pdf

Kurzfassung

For a quantitative assessment and interpretation of the tectonic history of Mars, a global mapping of tectonic structures is necessary. Based on the fault inventory used previously to model the expected spatial distribution of seismic activity on Mars [1], we have produced a new, more extensive catalog of thrust and normal faults on Mars. We have revised the fault traces contained in the catalog of [1], removing some minor inaccuracies, and added 1409 new thrust faults and 4925 normal faults, with a cumulative length of about 340000 km, which were previously not contained. The total numbers of faults are now 5146 thrust and 9689 normal faults, with a cumulative length of about 941000 km. All faults were mapped based on a global shaded relief map derived from MOLA (Mars Orbiting Laser Altimeter) topography data, with a map resolution of 1 km per pixel. The topographic map was artificially illuminated from two different directions, 90 degrees apart, to avoid any sampling bias by illumination geometry. Additionally, a global 3-D anaglyphic map (Knapmeyer et al., shown elsewhere on this conference) was used to support the identification of faults. The ESRI ArcGIS and the GRASS open-source software were used for mapping, interpolation to uniform sampling and numerical evaluations. A digitized version of the USGS geological map of Mars [2] [3] [4] was manually registered to the MOLA map and absolute surface ages were assigned based on crater statistics. All faults were gathered into several groups and sub-groups of presumably common tectonic origin, and relative ages of these groups and sub-groups were derived from cross-cutting relations between them. These relative ages allow inferring a sequence of tectonic events or epochs independent of the crater statistical ages. References: [1] Knapmeyer M. et al. JGR, 111,E11006, doi:10.1029/2006JE002708,2006. [2] Scott & Tanaka, Map I-1802-A, USGS, 1986 [3] Greeley & Guest, Map I-1802-B, USGS, 1987 [4] Tanaka & Scott, Map I-1802-C, USGS, 1987

Dokumentart:Konferenzbeitrag (Poster)
Titel:An extended global Inventory of Mars Surface Faults
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Knapmeyer, M.NICHT SPEZIFIZIERT
Schneider, S.NICHT SPEZIFIZIERT
Misun, M.NICHT SPEZIFIZIERT
Wählisch, M.NICHT SPEZIFIZIERT
Hauber, E.NICHT SPEZIFIZIERT
Datum:April 2008
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:10
Name der Reihe:Geophysical Research Abstracts
Status:veröffentlicht
Stichwörter:Mars; tectonic structures; seismic activity; fault catalogue; MOLA; GIS
Veranstaltungstitel:European Geosciences Union - General Assembly
Veranstaltungsort:Vienna (Austria)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2008-04-13 - 2008-04-18
Veranstalter :European Geosciences Union
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EW - Erforschung des Weltraums
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Vergleichende Planetologie (alt)
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Planetenphysik
Hinterlegt von: Stefanie Hempel
Hinterlegt am:29 Apr 2008
Letzte Änderung:27 Apr 2009 14:54

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