首页> 外文会议>Gravity, Geoid and Space Missions: GGSM 2004; International Association of Geodesy Symposia; vol.129 >Absolute Gravity Measurements in Australia and Syowa Station, Antarctica
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Absolute Gravity Measurements in Australia and Syowa Station, Antarctica

机译:澳大利亚和南极洲Syowa站的绝对重力测量

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Absolute gravity measurements have been carried out in Perth and Canberra, Australia, and at Syowa Station, Antarctica, as a part of activities of the 45th Japanese Antarctic Research Expedition during 2003-2004. Using a FG-5 (#210), the measurements in Perth were conducted at the Perth Observatory on November 25 and 26, 2003, and those in Canberra were conducted at Mt Stromlo Observatory and at Tidbinbilla Deep Space Tracking Station from March 26 to April 16, 2004. The gravity values obtained at the Perth observatory, Mt Stromlo and Tidbinbilla are 979403619.9 μGal, 979549870.7 μGal and 979576114.3 μGal, respectively. Using a FG-5 (#111), Geoscience Australia and Micro-g Solutions occupied the same points at Perth and Tidbinbilla in June 2003. The gravity values at Tidbinbilla agreed very well at 0.1 μGal, while the values at Perth differed by 13.4 μGal due to unknown causes. The measurements at Syowa Station, Antarctica were carried out using two FG-5s (#210 and #203) from December 30th, 2003 to February 1st, 2004. There is a category "A" point of the International Absolute Gravity Base Station Network (IAGBN) in the gravity observation hut at Syowa Station. The gravity values obtained by #203 and #210 are 982524322.8 μGal and 982524324.5 μGal, respectively such that both agreed at 1.7 μGal. There are two previous gravity values obtained by a FG-5 in 1995 and 2001. The secular rate of the gravity changes estimated from the values is -0.27 ± 0.42 μGal/yr. This value is consistent with an estimated rate from postglacial rebound models.
机译:作为第45届日本南极研究远征队2003-2004年活动的一部分,已经在澳大利亚的珀斯和堪培拉以及南极洲的Syowa站进行了绝对重力测量。使用FG-5(#210),于2003年11月25日至26日在珀斯天文台进行了测量,从3月26日至4月,在堪培拉的斯特罗姆洛天文台和Tidbinbilla深空跟踪站进行了测量。 2004年16月16日。在珀斯天文台,斯特罗姆洛山和提宾比拉获得的重力值分别为979403619.9μGal,979549870.7μGal和979576114.3μGal。使用FG-5(#111),澳大利亚地球科学公司和Micro-g Solutions于2003年6月在珀斯和蒂宾比拉占据了相同的位置。蒂宾比拉的重力值非常吻合,为0.1μGal,而珀斯的重力差为13.4μGal。由于未知原因。从2003年12月30日至2004年2月1日,在南极洲Syowa站进行了两次FG-5(#210和#203)测量。国际绝对重力基站网络(“在Syowa站的重力观测小屋中(IAGBN)。由#203和#210获得的重力值分别为982524322.8μGal和982524324.5μGal,以使两者均一致为1.7μGal。 FG-5在1995年和2001年获得了两个先前的重力值。根据这些值估算出的重力变化的长期变化率为-0.27±0.42μGal/ yr。该值与冰川后回弹模型估计的速率一致。

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