中文摘要：

利用单历元定位方法处理2008年汶川Ms8．0级地震震中附近GPS连续站1Hz数据，获取近场地壳运动学特征。观测结果表明，测站运动的方向和幅度不仅与测站与震中距离相关，而且与破裂带的距离相关，近场运动学的复杂性反映了震源破裂过程具有逆冲和走滑的特征。距震中最近的郫县站最大运动学位移EW方向超过100cm，NS方向达到70cm，其GPS位移和强震仪得到的位移一致。对12个GPS测站的运动学位移与永久静态位移进行对比，发现6个测站前者明显大于后者，5个测站二者大小相当，成都站前者小于后者。

英文摘要：

The ground kinematic feature is analyzed using 1-Hz data recorded by the continuous GPS stations near the epicenter of the 2008 MsS. 0 Wenchuan earthquake. It is demonstrated that the kinematic direction and intension of each station are associated with its distances not only to the epicenter but also to the surface rupture belt. The kinematic complexity of near-field stations reflects the general features of thrust and strike focal rupture process. At PIXI station, which is the nearest station to the epicenter, the largest kinematic displacements are de- tected, more than 100cm and 70 cm for EW and NS components, respectively. The GPS-derived displacement is consistent with the result obtained by strong motion seismograph. FinaXly, the maximum kinematic displacements are compared with permanent coseismic ones for all stations. It is very clear that maximum kinematic displacements are larger than permanent coseismic displacements for six stations. There are five stations with maximum kinematic dis- placements being comparative to permanent coseismic displacements. At Chengdu station, the maximum kinematic displacement is less than its permanent coseismic displacements.