摘要
通过对直读式海流计、ENDECO海流计和ADP测流结果的对比分析表明,ENDECO所测流速比直读式海流计偏小约4.2%,流向偏小2.4%;ADP测得的流速比直读式海流计偏大6.1%,流向偏大3.6%,但ADP测量数据更稳定;由三种仪器测得的涨落潮平均流速相对偏差均在10%左右。三种仪器的观测数据可比性强,同时使用时完全能够相互对比分析。流速小于30 cm/s时,由于仪器的摩擦阻力作用,直读式海流计精度变低;流速大于30 cm/s时,三种仪器测得的结果相差较小。与直读式海流计和ADP相比,ENDECO海流计对流向变化较敏感。
The results of the analysis of current velocity and direction data collected by Electromagnetic Reading Current Meter（EM）,ENDECO and Acoustic Doppler Profiler（ADP）,show that the current velocity of ENDECO is less than that of EM by 4.2%,and the direction by 2.4%.The current velocity of ADP is bigger than that of EM by 6.1%,and the direction by 3.6%.Furthermore,the data of ADP are more stable than those of ENDECO.The deviation of the averaged current velocity and direction in flood ＆ ebb tides calculated from the data of those three in struments is about 10%,so the data can be well used in comparative analysis.When the current velocity is less than 30cm/s,the accuracy of EM becomes lower due to the instruments＇ frictional resistance.When the current velocity exceeds 30cm/s,the deviation of three instruments is negligible.Comparing with EM and ADP,ENDECO is more sensitive to change in direction than the other instruments.
出处
《海洋工程》
CSCD
北大核心
2007年第4期60-65,共6页
The Ocean Engineering
基金
国家基础研究发展规划资助项目(2002GB412403)
国家自然科学基金资助项目(50379014)
教育部创新团队资助项目(IRTO427)
