【摘要】 用首都圈2001、2005和2009年的精密水准测量资料,计算出该区域2001—2009年因地面沉降引起的重力点高程变化量,通过此高程变化量,利用重力布格改正公式计算出该网2001—2009年重力点位因地面沉降产生的重力变化值。计算结果表明:使用精密水准资料,可以准确计算重力测量点因地面沉降产生的重力变化。更多还原

【Abstract】 Based on the data of precise leveling survey in 2001、2005 and 2009 around the Capital Circle area,the elevation variation induced by subsidence at the mobile gravity measuring points were calculated for the data from 2001 to 2009 in this area. With Bonguer correction formula of high precision,the gravity variation induced by subsidence at the mobile gravity measuring points from 2001—2009 in Capital Circle area were obtained from the varied elevations at the points. The results show that,the gravity variation induced by subcidence at the mobile gravity measuring points can be calculated accurately with precise leveling data.更多还原