It is indicated that the distance from the tidal reach to the estuary should be highly concerned in determination of data age and selection of methods for navigable stage design.

研究结果表明，感潮河段设计通航水位方法的选取以及所需样本年限的长短与其距河口的距离有密切关系。

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In the second stage (Taiyuan Age), sub-tidal, tidal flat and delta occurred alternatively.

第二阶段（太原组）潮下带、潮坪、三角洲环境交替出现；

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Because of complex influence of runoff and tide in tidal reaches, how to make decision method and standard of designed navigable stage have not been known up to now.

感潮河段因受上游径流和下游潮汐的双重影响，航道设计通航水位确定方法和标准需考虑两方面的因素，目前尚无定论。

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Guided tours with National Park Rangers, pet-friendly walks, food tents, live stage performances and even a ranger-led bike tour and night walk around the Tidal Basin will be part of the free activities at the National Mall.

FORBES: Celebrate Spring At The National Cherry Blossom Festival