黄石台ORBES-81型伸缩仪观测结果的调和分析及海潮改正  

HARMONIC ANALYSIS AND OCEAN LOADING CORRECTION OF OBSERVATION BY ORBES-81 EXTENSOMETER AT HUANGSHI STATION

作　　者：周坤根 B. Ducarme 胡延昌[1] 

机构地区：[1]国家地震局地震研究所,湖北武昌430071 [2]比利时皇家天文台

出　　处：《地球物理学报》1991年第4期474-481,共8页Chinese Journal of Geophysics

基　　金：地震科学联合基金

摘　　要：本文对黄石台ORBES-81型石英伸缩仪的应变固体潮观测资料作了分析计算,其调和分析结果为:对O_1波,振幅因子0.4219,相位滞后6°36＇;对M_2波,振幅因子0.4256,相位滞后-4°42＇.同时,讨论了海潮引起的负荷潮汐应变的改正问题.模拟计算发现负荷潮汐应变与体潮应变大致为同一量级,文中列出了海潮改正后的结果,并作了讨论.最后,对黄石台伸缩仪的架设方位作了评价.In this paper, a harmonic analysis of strain tidal observation of the ORBES-81 quartz extensometer at Huangshi is made by using the program of the International Center for Earth Tides (the amplitude factor and the phase lag are 0.4219 and 6°36 for O1, 0.4256 and - 4°42' for M2). Furthermore, a discussion of the loading tidal strain correction is given with the result after the loading correction. We found that the loading tidal strain has approximately the same amplitude as the body one. An evaluation of the actual azimuth of the extensometer at Huangshi is discussed.

关 键 词：固体潮 地震观测 朝汐 调和分析 

分 类 号：P315.7[天文地球—地震学]