High Precision Measurements for Studying the Secular Variation in Gravity in Finland, Issue 78 |
Contents
Introduction | 5 |
The measurement of the line JoensuuÄänekoskiVaasaKramfors | 11 |
The reduction of the observations | 30 |
2 other sections not shown
Common terms and phrases
Äänekoski and Joensuu adjustment calibration curve computed considered crosshair crust daily drift Earth's Excenter Fennoscandian line Finland Finnish Finnish Meteorological Institute formula free air temperature Geodesy GERSTENECKER Gravi gravimeter display gravimeter reading gravimeters Nos 55 gravity difference gravity measurements ground water Gulf of Bothnia h Ag Tidal Helsinki HONKASALO increase the standard influence internal reading accuracy investigated LaCoste and Romberg mb mm C.U. measurements between Vaasa measurements were carried measuring period meter C mb mGal microgals observation elevation observation series outer pressure outer temperature performed periodic errors PETTERSSON possible presented in Table Pyhäselkä quadratic mean results of gravimeter Romberg gravimeters sea level secular variation standard error studying the secular systematical errors tests and calibrations tidal correction tidal effect Tidal Th Tohmajärvi Vaasa Äänekoski Vaasa and Kramfors Vaasa Kramfors variation in gravity variation in outer weighted means yearly land uplift µGal Τρ