Discrimination of Paleoseismicity from Coupled Interplate Subduction and Locked Upperplate Deformation Recorded in Salt Marsh Sequences of a Convergent Margin

这项研究将研究太平洋西北部的沿海沼泽序列，以寻找地震活动的证据。沉积物取心和泥炭测年将是该剖面的主要分析方法。沉积物记录需要对地震原因事件与非地震原因事件进行现实评估。晚全新世古地震活动和海岸形变的时间分布是本研究的主要目的，以解决在晚全新世海岸沼泽序列中是否记录到过去的大地震这一有争议但又重要的问题。这项研究直接关系到太平洋西北沿海地区发生大俯冲型地震的可能性问题，因此是对国家防震减灾计划的重要贡献。

This research will examine coastal marsh sequences in the Pacific Northwest for evidence of seismic activity. Sediment coring and age dating of peats in the section will be the major analysis method. The sediment record needs a realistic evaluation of seismic versus non-seismic causal events. Temporal distributions of late Holocene paleoseismicity and coastal deformation are a major objective of this study in order to bear on the debatable but important question of whether there are past major earthquakes recorded in the late Holocene coastal marsh sequences. This research bears directly on the question of the possibility of a major subduction-type earthquake along the Pacific Northwest coastal region, and therefore is an important contribution to the National Earthquake Hazard Reduction Program.