HR: 0800h
AN: P21B-0143    [Abstracts]
TI: Alluvial Fan in Icaria Planum, Mars
AU: * Korteniemi, J
EM: jarmo.korteniemi@oulu.fi
AF: Astronomy, University of Oulu, Oulu, 90014 Finland
AU: Raitala, J
EM: jouko.raitala@oulu.fi
AF: Astronomy, University of Oulu, Oulu, 90014 Finland
AU: Aittola, M
EM: marko.aittola@oulu.fi
AF: Astronomy, University of Oulu, Oulu, 90014 Finland
AU: Kostama, V
EM: petri.kostama@oulu.fi
AF: Astronomy, University of Oulu, Oulu, 90014 Finland
AU: Hauber, E
EM: hauber@rho.pe.ba.dlr.de
AF: Institut f�r Planetenforschung, DLR, Berlin-Adlershof, 12489 Germany
AU: Kronberg, P
EM: kronberg@geologie.tu-clausthal.de
AF: Institute of Geology, Technische Universit�t Clausthal, Clausthal-Zellerfeld, 38678 Germany
AU: Neukum, G
EM: gneukum@zedat.fu-berlin.de
AF: Inst. of Geosci., Freie Universit�t, Berlin, 12249 Germany
AU: HRSC Co-I Team, T
EM: gneukum@zedat.fu-berlin.de
AF: Inst. of Geosci., Freie Universit�t, Berlin, 12249 Germany
AB: The Mars Express HRSC data were used to study fluvial history of southern Claritas on Mars (1, 2). Volatiles, transported downslope to the basin, breached through a saddle valley and formed a channel towards Icaria Planum in the west. Along the channel, sapping provided additional water. The channel broke into a 30-km impact crater and formed a temporary lake. The crater rim has terraces and the floor has smooth deposits. A delta was formed in a standing water. After breaching the crater rim through a neck which is higher than the crater floor, water deposited onto Icaria Planum an alluvial fan. This fan was studied using the HRSC colour data by mapping deposit units of the Icaria lowlands in front of the channel. The flood deposits were made visible by the multichannel HRSC data classification. The alluvial structures reflect topography and regional slopes as well as the amount of available water. The hi-resolution HRSC image provides an additional view into the alluvial structures, erosion and sedimentation in the channel formation. These remote sensing approaches facilitate the mapping of characteristic phases in the fluvial development of the area studied. References. (1) Raitala et al., 2005. LPS XXXVI, #1307. (2) Korteniemi, J., Raitala, J., Aittola, M., Kostama V.-P., Hauber E., Kronberg P., Neukum G. and the HRSC Co-I Team, 2005. Fluvial channel resulted in alluvial fan formation in Icaria Planum, Mars. Submitted to 42nd Vernadsky-Brown Microsymposium, Moscow 9-12. 10. 2005.
DE: 5419 Hydrology and fluvial processes
DE: 5464 Remote sensing
DE: 6225 Mars
SC: Planetary Sciences [P]
MN: Fall Meeting 2005