摘要
高精度的经典绝对重力仪,精确的重力值g在对大地测量、地球物理和精密计量方面具有十分重要的意义,在地震、地理、海洋、资源勘探、工程勘查、气象等领域有着广泛的应用.本文依据重力测量与气压测量之间的相关性,从气象应用的实际出发,改进了现有重力加速度公式,给出了新构建的在海洋和陆地上测量重力加速度的公式——g_新φ.o=9.80665(1—0.00265 cos2φ)+6.3868×10^(-5)cos2φ—4.5×10^(-4)和g_新:φ.H=g_新:φ,0—3.086×10^(-6)H+1.118×10^(-6)(H—H'),并用于测量各地气象台、站及其附近的重力值.通过气象测量实例和数值计算比较,得出了新的重力公式比气象常用表(第3号)中的重力公式准确、比世界气象组织(WMO)于1983年公布的重力公式准确的结论.新的重力公式与WMO在第六版气象仪器和观测方法指南中推荐的重力公式相比较,不仅其计算值在误差范围内是相等的,而且具有使用方便、测量准确、物理意义明确的优点.新公式在重力测量领域具有一定的应用价值和实用意义.
The accuracy of the classic absolute value of gravity, precise spring gravimeters at geodesy,g, geophysical and precision measurement has impovtant significance in earthguake, geography, Marine and resource exploration, engineering exploration, gas Like those aspects are widely used. Based on the gravity measurement and pneumatic measurement, from the relationship between,Improved the existing gravity acceleration, Meteorological application of reality, and presents the new building in the ocen and land on mtasurement of gravity acceleratio Type g新： Ф,0=9. 80665（1 -- 0. 00265 cos2Ф） ＋ 6. 3868 × 10.6 cos2Ф-- 4.5 × 10^-4 and g新g新：Ф,H = g新 ：Ф,0--3. 086 × 10^-6 H-k 1.118 × 10-6（H-H＇）, the meteorological measurement and numerical examples, toset a new gravity formula used table （than the first 3） gravity formula accurate, than the world meteorological organization （WMO） was established in 1983 to publish the gravity formula accurate conclusions. The new gravityformula and WMO sixth edition in meteorological instruments and observation methods recommendedGuidelines of gravity formula, not only its compared calculation in error range is egual, and has convenient use, measurement accuracy, physical meaning clear advantage. The new formula in gravity measurement field has application value and practical significance.
出处
《地球物理学进展》
CSCD
北大核心
2011年第3期824-828,共5页
Progress in Geophysics
关键词
重力修正
重力公式
重力加速度值
gravity correction, gravity formula, gravity acceleration
