Determination of a unified height reference system for the computation of a local geoid around the volcanoes Merapi and Merbabu, Java']Java, Indonesia

被引：0

作者：

Gerstenecker, C ^{[1
]}

Läufer, G ^{[1
]}

Snitil, B ^{[1
]}

Sunantyo, A ^{[1
]}

机构：

[1] TH Darmstadt, Inst Phys Geodesy, D-64287 Darmstadt, Germany

来源：

VERTICAL REFERENCE SYSTEMS | 2002年 / 124卷

关键词：

!text type='Java']Java[!/text; height reference system; tide gauge; Merapi; Merbabu;

D O I：

暂无

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The determination of an accurate local geoid around the volcanoes Merapi and Merbabu in Java, Indonesia requires the existence of a unified height reference system. For that purpose we have established five GPS-stations near sea tide gauge stations in Java and determined their orthometric heights by levelling as well as by the computation of global geoidal and ellipsoidal heighis. The obtained orthometric heights differ significantly from each other. The analysis of sea tidal records cannot explain the differences. Also sea surface topography around Java is not responsible for the differences. Likely reasons are large changes of the local geoid or different datum of the height system. Therefor we have fitted a reference plane to the data which is minimising the height differences and allows to compute the orthometric heights of local reference stations better than +/-1m.

引用

页码：339 / 344

页数：6