The Grid Optimization of The Terrestrial Gravity Survey (Case Study: Central Part of Java Island)

Autor:	S N Oktavia, A N Syafarianty, G H Pramono, E R Suyatno, A M Pahlevi
Rok vydání:	2021
Předmět:	Gravity (chemistry) Grid optimization Java island Geodesy Geology
Zdroj:	IOP Conference Series: Earth and Environmental Science. 731:012010
ISSN:	1755-1315 1755-1307
Popis:	BIG has conducted gravity data by using several methods, namely terrestrial gravity and airborne gravity to produce high accuracy of the geoid. The terrestrial gravity survey was carried out using the grid method, and BIG does not have any guidance on the size of the used grid interval size. We try to divide the grid interval into four different sizes of grids, those are km, 10 km, 15 km, and 20 km. A case study in the central part of Java Island, at Semarang and Yogyakarta in 2019, using Scintrex CG-5 relative terrestrial gravimeter equipment. By using the integral stokes and Least Square Collocation (LSC) approaches, the gravimetric geoid is obtained from each grid interval. We compared gravimetric geoid with geometric geoid on 179 vertical benchmarks and obtained the results of the 5 km grid interval having the smallest average value of 0.273 meters ± 0.310 with the most appropriate conformity test.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::29d5278881ef46063531f499c06cbf83 https://doi.org/10.1088/1755-1315/731/1/012010 Zobrazit plný text záznamu