ULYSSES out-of-ecliptic observations of interplanetary shocks.

interplanetary shocks observed at the Ulysses spacecraft as it traveled from the ecliptic plane to the southern solar pole have been identified and analyzed using both magnetic field and plasma measurements. The latitude dependence of various parameters associated with the shocks (beta, and Mach number) have been investigated. direction of shock propagation of forward and reverse shocks is qualitatively consistent with the global 3-D model of [1991] which predicts that forward shocks will propagate equatorward while reverse shocks propagate strongest shocks, are observed mid-latitudes and are from the south polar coronal hole. These shocks are shown to be in contrast to the lower subcritical shocks. This change in character of the shocks is likely related to the intensity of the shock-accelerated energetic particles which also peaks in the same latitude range. 1 Introduction Properties of interplanetary shocks in or near the ecliptic plane have previously been examined using data f...