The n-alkanes content in the sedimentary sequence from Thale Noi, on the west coast of the Gulf of Thailand, was analyzed and used to reconstruct the past sea-level fluctuations. The results were further compared with those based on sediment characteristics, loss on ignition, grain size distribution, and pollen analysis from the same core to investigate the efficiency of n-alkanes as a paleoenvironmental proxy. The analysis of n-alkanes indicated the likely periods of regression and transgression from c. 8300–7950 cal. a BP and from c 7950–7665 cal. a BP that agrees well with the reconstructed sea-level changes from the sediment characteristics and pollen records. The steady abundance of mangrove pollen taxa in the sediment core points to a standstill in the sea-level from 7650–6870 cal. a BP. However, the results from the n-alkanes analysis further suggested a sea-level fall at c. 7650–7610 cal. a BP and at c. 7400–6870 cal. a BP, and a sea-level rise at c. 7610–7400 cal. a BP. Furthermore, these sea-level changes were intervened by short intervals of regression centered at c.7590 and 7470 cal. a BP.

分析了泰国湾西海岸Thale Noi沉积序列中的正构烷烃含量，并将其用于重建过去的海平面波动。将结果与基于沉积物特征，着火损失，粒度分布以及同一岩心的花粉分析结果进行了比较，以研究正构烷烃作为古环境替代物的效率。对正构烷烃的分析表明了c可能的回归和越境期。8300–7950卡路里 a BP，c 7950–7665 cal。BP与沉积物特征和花粉记录中重建的海平面变化非常吻合。沉积物核心的红树林花粉类群数量稳定，这表明7650-6870 cal的海平面处于停滞状态。BP。然而，正构烷烃分析的结果进一步表明海平面在c下降。7650–7610卡路里 BP和c。7400–6870卡路里 BP，海平面上升c。7610–7400卡路里 BP。此外，这些海平面变化受到了以c.7590和7470 cal为中心的短时间回归间隔的干预。BP。