Mathematics – Logic
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.0319p&link_type=abstract
American Astronomical Society, DPS meeting #28, #03.19; Bulletin of the American Astronomical Society, Vol. 28, p.1068
Mathematics
Logic
Scientific paper
The Mars-96 mission will deliver two penetrators on martian surface. They will impact on Martian surface in October 1997. The two Penetrators will be jettisoned after the spacecraft has adopted the working orbit around Mars. The Penetrators are expected to land in October 1997 nominally to Amazonis-Arcadia region 36dN, 161dW and between Olympos Mons and Alba Patera craters 36dN, 125dW. Both penetrators have meteopackages consisting of pressure (P), temperature (T), humidity (U), wind speed and direction (V) sensors for in situ observations. The Finnish Meteorological Institute provides a pressure and humidity measuring instrument (PUI-instrument) using capacitive sensors which are used in many terrestrial applications like radiosondes as well as in the Mars-96 small stations. Keldysh Institute of Applied Mathematics (IAM), Moscow and The Russian Space Research Institute (IKI) will provide wind and temperature sensors. Mass of the meteopackage is about 250 g including interface wires. Sensors are sampled only a few times per sol due to severe power shortage. The sensor accuracies are Delta p <= 0.02 hPa, Delta T <= 0.5 K, Delta V <= 0.4 m/s and direction <= 45d. The passive humidity sensor is expected to give information on the seasonal humidity variation, and diurnal variation during summertime. The diurnal variations of surface winds and pressure have been estimated by using a 2-D mesoscale circulation model. Due to the characteristics of the sites slope winds interacting with the large-scale circulation are expected to dominate the local circulations.
Harri Ari-Matti
Lebedev Vladimir
Lystsev V.
Manuilov K. K.
Polkko Jouni
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