缓慢扩张的海脊段具有高度不对称的特征。横切轴部的这种不对称表现在水深、断层几何形状和洋壳厚度变化上。虽然以前把短时期的不对称增生视为缓慢扩张海脊的一个扩张要素,但是对扩张段内部的这种过程还不了解。该项研究首次对此进行了详细研究。１９９６年ＣＤ９９研究航次在 The slowly expanding ridges have highly asymmetric features. This asymmetry of the transversal axis manifests itself in the depth of water, the geometry of the fault and the change in the thickness of the oceanic crust. Although short-term asymmetric hyperplasia was previously considered as an expansion element for the slow expansion of the ridges, this process within the expansion is not known. This study for the first time conducted a detailed study. 1996 CD99 research voyage in