Additional sedimentation occurred until a subduction zone formed off the coast .
直至一个潜没带在距离海岸处形成前，额外的沉积作用一直存在。
These ratios indirectly measure the amount of water locked up in glacial ice sheets at the time of sedimentation .
这些比值可以间接测量沉积过程中锁定在冰川冰层内的水量。
Human waste is channelled into a septic tank and undergoes an initial step of sedimentation and anaerobic digestion .
人体排泄物引排到化粪池后先要经过沉降和厌氧分解的过程。
Repeated aerial surveys over the coming years will also give the researchers insight into how vegetation recovers from fires , how the beetles affect this process , how erosion and sedimentation affect the region 's water resources , and whether fire creates opportunities for new species to invade .
Du yun , a geologist with the institute of geodesy and geophysics at the china academy of sciences , has warned that the diversion of a third of the water in the danjiangkou reservoir will raise the risk of pollution , sedimentation and flooding on the han river .
