综述自IPCC—AR4(联合国政府间气候变化委员会第四次评估报告)以来,华南沿海海平面变化研究的新进展,结果显示:1)7100—3500ealaBP时期华南沿海的海平面较今高1.5~2.5m;2)1970--2010年的海平面上升率为2.5mm/a,高于同时期全球平均上升率2.1mm/a,原因与西太平洋暖池直接影响有关;3)采用新的全球冰川均衡调整(GIA)模型分析得出,华南沿海各验潮站的GIA效应值为-0.18—0.30mm/a;4)实施“海平面观测与影响评价标准”(HY/T134—2010)行业推荐标准,提高了影响评估的科学性。
Progress in the study of sea level changes along the coastal area of South China since IPCC-AR4 is reviewed. It is found that: 1 ) During the period of 7100-3500cai a BP, the sea level along the area was 1.5-2.5m higher than today's. 2 ) From 1970 to 2010, the rise-rate of sea level was 2.5 mm/a, higher than that of the global average ( 2.1 mm/a ) at the same period, that was related to the direct effect of the west Pacific warm pool. 3 ) Analysis with the new GIA model shows that the GIA value is -0.18 mrn/a--0.30mm/a for the tide-gauge stations in South China. 4 ) The scientific solidity of the evaluation is improved, as Sea Level Observation and Effects Evaluation Standards ( HY/T134-2010 ) are implemented.