Hasanuddin Z. Abidin

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During the past few years a methodology has been developed for processing data collected by GPS networks consisting of a mixed set of single-frequency and dual-frequency receivers. The strategy is to deploy a few permanent, 'fiducial' GPS stations with dual-frequency, geodetic-grade receivers surrounding an 'inner' network of low-cost, single-frequency GPS(More)
In the past decade or so there has been increasing interest in the use of permanent, continuously-operating GPS networks, with a small number of continuous networks having been deployed in the USA, Japan, Canada and Europe for large scale crustal motion studies. However, only in Japan has a country-wide continuous GPS network to support seismic research(More)
Repeat-pass Interferometric SAR (InSAR) technique is useful tool for the monitor of surface deformation. This technique is applied to detect the deformed area due to land subsidence in Jakarta, Indonesia. In those areas, it is well known that the excessive pumping of ground water has caused land subsidence. Leveling survey and GPS networking survey are(More)
The Global Positioning System (GPS) can be utilised to detect ground deformations of the surface of a volcano. Ground deformation monitoring is considered one of the most effective tools for investigating the behaviour of active volcanoes. The decreasing cost of GPS hardware, together with the increased reliability of the technology, facilitates such(More)
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