THEORY AND RESEARCH OF ORTHOMTRIC HEIGHT IN GRAVITY FIELD SEA LEVEL
Received date: 2004-05-20
Revised date: 2004-09-16
Online published: 2005-04-25
Orthometric height i.e., Height above sea level (HASL), it is confined by the earth gravity and is an important geodetic concept, which has been widely applied to the field of economics, military defense, scientific research and son on. For nearly fifty years, concept of normal height has been adopted in China. However, thanks to the rapid development in geodesy and other computation technology, the HASL can be computed as accurately as the normal height. Particularly, the HASL is very fit to the case of wide and high multimountain areas of China. This ideal of orthometric height would be accepted by many people. This study will make a review of three historic periods of the development of HASL theory. The three periods are characterized by (1) definition and approximated evaluation of HASL; (2) proposition of HASL and (3) precise evaluation of HASL. Furthermore, this study also introduces the method of compute on the basic orthometric height level (geoid).
Key words: Height above sea level; Orthometric height; Normal height; Geoid.
ZHANG Chi-jun , BIAN Shao-feng . THEORY AND RESEARCH OF ORTHOMTRIC HEIGHT IN GRAVITY FIELD SEA LEVEL[J]. Advances in Earth Science, 2005 , 20(4) : 455 -458 . DOI: 10.11867/j.issn.1001-8166.2005.04.0455
[1] Compeiler Committee.Dictionary of Survery Mapping[M].Shanghai: Shanghai Lexicographical Publishing House ,1983.[《测绘辞典》编委会编.测绘辞典[M].上海:上海辞书出版社,1983.]
[2] Xu Houze ,Zhang Chijun: Earth shape and its gravity[J].Science Development,1983, 1:40-45.[许厚泽,张赤军.地球形状及外部重力场的研究[J].科学进展,1983,(1):40-45.]
[3] Li Jiancheng,Chen Junyong,Ning JinSheng,et al. Approach Theory of Earth Gravity and Quaigeoid in 2000[M]. Wuhan: Wuhan University Press,2003.[李建成,陈俊勇,宁津生,等.地球重力场的逼近理论与中国2000年似大地水准面[M].武汉大学出版社,2003.]
[4] Heiskanen W S. Moritz H. Physical geodesy[M]. San Francisco: Freeman and Company,1967.
[5] Molodensky M S, geremeyer V F. Yourkina M I. Methods for Study of the External Gravitational Field and Figure of the Earth[M]. Israel prog. Trans. Jerusalem,1962.
[6] Zhang Chiju: Determination of vertical gradient of gravity anomaly with topographic data[J].Chinese Science Bulietin, 1999,44(11):1 029-1 034.[张赤军.用地形数据确定重力异常垂直梯度[J].科学通报,1999,44(11):1 029-1 034.]
[7] Sjoberg L. On the quasigeoid to geoid separation[J]. Manuscripts of Geodesy,1995, 20: 182-192.
[8] Rapp R H. Use of potential coefficient models for geoid undulation determination using a spherical harmonic representation of the height anomaly/geoid undulation difference[J]. Journal of Geodesy,1997. 71(5),282-289.
[9] Zhang Chijun, Bian Shaofeng. Difference between geoid and quasi-geoid and its model verification[J].Journal of Chengda University of Technology,2002,29(1):105-109.[张赤军,边少锋. 似大地水准面与大地水准面之差及其模型显示[J].成都理工学院学报,2002,29(1):103-109.]
[10] Zhang Chijun. Two methods for determining the orthometric height with high accuracy[J].Geomatics and Information Science of Wichan University,2003,28(4):432-434.[张赤军. 推求正高的两种方法[J]. 武汉大学学报(信息科学版),2003,28(4):432-434.]
[11] Jiao Wenhai, Wei Ziqing, Ma Xin,et al. The origin vertical shift of national height datum 1985 with respect to the geoidal surface[J].Acta Geodaetica et Cartographica Sinica,2002,31(3):196-200.[焦文海,魏子卿,马欣,等.国家高程基准相对于大地水准面的垂直偏差[J].测绘学报,2002, 31(3): 196-200.]
[12] Grafrand E, Kromm F W, Schwarze V S,eds. Geodesy[M]. Berlin: Springer, 2003.
[13] Yeremev V F, Yourkina M I. Theory of Height in Earth's Gravity[M]. Nedra: Mossow, 1972.
[14] Bursa M, Bystrzycka K, Radej K, et al. Estimation of the accuracy of geopotential models[J]. Studio Geoph et Geod,1995, 39: 365-374.
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