Abstract
Determination of gravity anomalies in Java, Indonesia, from airborne gravity survey
Highlights
The geoid represents the Earth's equipotential gravity surface which defines the definitive physical height reference in geodesy applications, i.e., orthometric height
We focused on the following issues: (1) software development to estimate gravity anomaly; (2) filter design and estimated resolvable wavelength; and (3) data accuracy assessment
We developed a Graphical User Interface (GUI) software called AiNG-ITB (Airborne Gravity Data Processing–Institut Teknologi Bandung) to apply the mentioned corrections and reductions for airborne gravimetry data processing
Summary
The geoid represents the Earth's equipotential gravity surface which defines the definitive physical height reference in geodesy applications, i.e., orthometric height. Numerous works have applied the so-called remove-compute-restore (RCR) technique with a denser gravity data coverage in geoid modeling to enhance the geoid accuracy locally/regionally (Schwarz et al, 1990; Corchete et al, 2008; Yildiz et al, 2012). Using this approach, we first removed the longwavelength and short-wavelength part from the gravity data observation using predicted gravity model from global/satellite gravity model and topography variation, respectively. The following is how the paper is structured: Section 2 reviews particulars aspects of utilizing airborne gravimeter to estimate gravity anomaly, Section 3 presents the research findings and discussions, and lastly, Section 4 provides the research summary and further considerations
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